Instrumentation Page 12C – 1

Page 12C – 1

Section 12C

Instrumentation

ATTENTION

Before performing any service operation or other procedure described in this Section, refer to Section 00

Warnings, Cautions and Notes for correct w orkshop practices wi th regard to safety and/or property damage.

1 General Information...............................................................................................................................8

1.1 General Description............................................................................................................................................... 8

Instrument Cluster................................................................................................................................................. 9

Instrument Cluster Warning Indicators................................................................................................................ 9

LED Warning Indicator Table ............................................................................................................................. 9

MFD Information Messages ............................................................................................................................. 10

MFD Animated Graphics.................................................................................................................................. 10

Warning Indicator Symbols............................................................................................................................... 10

1.2 Instrument Cluster Illumination.......................................................................................................................... 11

Chimes.................................................................................................................................................................. 11

1.3 Instrument Cluster Operation............................................................................................................................. 12

Ignition ON – Welcome Sequence Holden......................................................................................................... 12

1.4 Ignition On System Check .................................................................................................................................. 13

Ignition OFF.......................................................................................................................................................... 13

1.5 Alarms................................................................................................................................................................... 14

Vehicle Immobilisation by ECM or PCM ............................................................................................................ 14

1.6 Trip Computer...................................................................................................................................................... 15

Operation.............................................................................................................................................................. 15

Overspeed / Distance to Empty / Instantaneous Fuel....................................................................................... 16

Overspeed........................................................................................................................................................ 16

Mandatory Overspeed...................................................................................................................................... 17

Preset Overspeed ............................................................................................................................................ 17

Distance to Empty............................................................................................................................................ 18

Instantaneous Fuel........................................................................................................................................... 18

Average Speed / Odometer / Average Fuel........................................................................................................ 18

Average Speed................................................................................................................................................. 18

Odometer ......................................................................................................................................................... 18

Average Fuel.................................................................................................................................................... 18

Trip Time / Trip Distance / Fuel Used................................................................................................................. 19

Trip Time.......................................................................................................................................................... 19

Trip Distance.................................................................................................................................................... 19

Fuel Used......................................................................................................................................................... 19

Time to Arrival / Distance to Arrival / Remaining Fuel...................................................................................... 19

Time to Arrival.................................................................................................................................................. 20

Distance to Arrival............................................................................................................................................ 20

Remaining Fuel................................................................................................................................................ 20

Trip Time A/B / Trip Distance A/B / Fuel Used A/B............................................................................................ 20

Police Mode.......................................................................................................................................................... 21

Stop Watch........................................................................................................................................................... 21

1.7 Multi-function Display ......................................................................................................................................... 22

Constant Icons..................................................................................................................................................... 22

Cruise Control .................................................................................................................................................. 22

Power Mode (Automatic Transmission Only) ................................................................................................... 24

PRND321 (Automatic Transmission) – Normal Shift Mode.............................................................................. 25

“54321” (5 Speed Transmission) – Active Select Mode.................................................................................... 25

Traction Control or Electronic Stability Program............................................................................................... 26

Techline

Instrumentation Page 12C – 2

Page 12C – 2

Radio Settings.................................................................................................................................................. 27

Compact Disc (CD) .......................................................................................................................................... 30

Audio Settings.................................................................................................................................................. 32

Animated Warnings ............................................................................................................................................. 34

Engine Warning Messages............................................................................................................................... 35

Rear Lamp Failure Warning Messages............................................................................................................ 37

Vehicle Performance Warning Messages......................................................................................................... 38

Fuel Warning Messages................................................................................................................................... 39

System Fault Warning Message....................................................................................................................... 39

Rest Reminder Warning................................................................................................................................... 40

Seat Belt Warning ............................................................................................................................................ 40

Trapping Speed................................................................................................................................................ 41

Trap Speed Reset............................................................................................................................................ 41

Service Items........................................................................................................................................................ 41

Service Due...................................................................................................................................................... 42

Fuel Sender Error............................................................................................................................................. 43

Programming The Instrument Cluster ............................................................................................................... 44

Fuel Calibration Programming.......................................................................................................................... 44

1.8 Customisation Mode............................................................................................................................................ 45

Entering Customisation Mode (Options Menu)................................................................................................. 45

Stop Watch........................................................................................................................................................... 49

Rest Reminder...................................................................................................................................................... 49

Radio MFD Messages.......................................................................................................................................... 50

Confirmation Beeps............................................................................................................................................. 50

Factory Default Settings...................................................................................................................................... 62

1.9 Police Mode.......................................................................................................................................................... 63

2 Tech 2 Information ...............................................................................................................................64

System Identification........................................................................................................................................... 64

Body Menu............................................................................................................................................................ 64

Normal Mode.................................................................................................................................................... 64

Diagnostic Trouble Codes................................................................................................................................ 64

Data Display..................................................................................................................................................... 64

Snapshot.......................................................................................................................................................... 64

Miscellaneous Tests......................................................................................................................................... 64

Program ........................................................................................................................................................... 64

2.1 Normal Mode........................................................................................................................................................ 65

Normal Mode Data List........................................................................................................................................ 65

2.2 Diagnostic Trouble Codes .................................................................................................................................. 66

2.3 Data Display ......................................................................................................................................................... 67

Instruments .......................................................................................................................................................... 67

Inputs.................................................................................................................................................................... 68

Trip Computer...................................................................................................................................................... 69

Configuration ....................................................................................................................................................... 70

System Identification........................................................................................................................................... 71

2.4 Snapshot .............................................................................................................................................................. 72

2.5 Miscellaneous Tests............................................................................................................................................ 73

Warnings .............................................................................................................................................................. 73

Chime.................................................................................................................................................................... 73

2.6 Gauge Control Tests............................................................................................................................................ 74

Speedometer........................................................................................................................................................ 74

Tachometer........................................................................................................................................................... 74

Temperature Gauge............................................................................................................................................. 74

Fuel Gauge ........................................................................................................................................................... 74

2.7 Input Overrides .................................................................................................................................................... 75

2.8 Illumination........................................................................................................................................................... 76

MFD / LCD............................................................................................................................................................. 76

Pointers ................................................................................................................................................................ 76

Dials...................................................................................................................................................................... 76

Instrumentation Page 12C – 3

Page 12C – 3

2.9 Self Test – All Functions On ............................................................................................................................... 77

Test Display...................................................................................................................................................... 77

2.10 MFD Test............................................................................................................................................................... 78

LCD Tests............................................................................................................................................................. 78

Test Display...................................................................................................................................................... 78

2.11 Program................................................................................................................................................................ 79

Fuel Gauge Calibration........................................................................................................................................ 79

Configuration ....................................................................................................................................................... 79

Odometer.............................................................................................................................................................. 79

Speedometer calibration..................................................................................................................................... 79

Reset Service Interval.......................................................................................................................................... 79

Reset Trip Computer Settings ............................................................................................................................ 79

3 Wiring Diagrams and Connectors......................................................................................................80

3.1 Wiring Diagrams – V6.......................................................................................................................................... 80

3.2 Wiring Diagrams – V8.......................................................................................................................................... 83

3.3 Connector Chart – V6 .......................................................................................................................................... 86

3.4 Connector Chart – V8 .......................................................................................................................................... 88

3.5 Instrument Cluster Inputs................................................................................................................................... 90

P3 Connector Pin Locations............................................................................................................................... 90

S237 Connector Pin Locations........................................................................................................................... 91

4 Diagnostics...........................................................................................................................................92

4.1 Diagnostic System Check................................................................................................................................... 92

Circuit Description............................................................................................................................................... 92

Test Description................................................................................................................................................... 93

Diagnostic Aids.................................................................................................................................................... 93

Diagnostic System Check Diagnostic Table...................................................................................................... 93

4.2 Instrument Cluster Self Diagnostics.................................................................................................................. 95

Self Diagnostic Mode Operation......................................................................................................................... 95

Full Test ......................................................................................................................................................... 100

5 Diagnostic Trouble Codes.................................................................................................................101

General Information........................................................................................................................................... 101

5.1 Diagnostic Trouble Code List........................................................................................................................... 101

5.2 DTC 6 – No Serial Data from TPMS .................................................................................................................. 103

Circuit Description............................................................................................................................................. 103

5.3 DTC 7 – No Serial Data from ABS / TCS / ESP – V6 ........................................................................................ 104

Circuit Description............................................................................................................................................. 104

Test Description................................................................................................................................................. 104

Diagnostic Table Notes ..................................................................................................................................... 104

DTC 7 Diagnostic Table..................................................................................................................................... 104

5.4 DTC 8 – No Serial Data from ABS / TCS – V8 .................................................................................................. 106

Circuit Description............................................................................................................................................. 106

Test Description................................................................................................................................................. 106

Diagnostic Table Notes ..................................................................................................................................... 106

DTC 8 Diagnostic Table..................................................................................................................................... 106

5.5 DTC 9 – No Serial Data from BCM.................................................................................................................... 108

Circuit Description............................................................................................................................................. 108

Test Description................................................................................................................................................. 108

Diagnostic Table Notes ..................................................................................................................................... 108

DTC 9 Diagnostic Table..................................................................................................................................... 108

5.6 DTC 10 – No Serial Data from OCC .................................................................................................................. 110

Circuit Description............................................................................................................................................. 110

Test Description................................................................................................................................................. 110

Diagnostic Table Notes ..................................................................................................................................... 110

DTC 10 Diagnostic Table................................................................................................................................... 110

Instrumentation Page 12C – 4

Page 12C – 4

5.7 DTC 11 – No Serial Data from ECM – V6.......................................................................................................... 112

Circuit Description............................................................................................................................................. 112

Test Description................................................................................................................................................. 112

Diagnostic Table Notes ..................................................................................................................................... 112

DTC 11 Diagnostic Table................................................................................................................................... 112

5.8 DTC 11 – No Serial Data from PCM – V8.......................................................................................................... 114

Circuit Description............................................................................................................................................. 114

Test Description................................................................................................................................................. 114

Diagnostic Table Notes ..................................................................................................................................... 114

DTC 11 Diagnostic Table................................................................................................................................... 114

5.9 DTC 12 – No Serial Data from SDM .................................................................................................................. 116

Circuit Description............................................................................................................................................. 116

Test Description................................................................................................................................................. 116

Diagnostic Table Notes ..................................................................................................................................... 116

DTC 12 Diagnostic Table................................................................................................................................... 116

5.10 DTC 13 – No Instrument Poll from BCM........................................................................................................... 118

Circuit Description............................................................................................................................................. 118

Test Description................................................................................................................................................. 118

Diagnostic Table Notes ..................................................................................................................................... 118

DTC 13 Diagnostic Table................................................................................................................................... 118

5.11 DTC 14 – No Serial Communication Data ........................................................................................................ 120

Circuit Description............................................................................................................................................. 120

Module Data Bus Allocations for V6 and V8.................................................................................................... 120

Test Description................................................................................................................................................. 120

Diagnostic Table Notes ..................................................................................................................................... 120

DTC 14 Diagnostic Table................................................................................................................................... 121

5.12 DTC 15 – No Serial Data from Audio System................................................................................................... 122

Circuit Description............................................................................................................................................. 122

Test Description................................................................................................................................................. 122

Diagnostic Table Notes ..................................................................................................................................... 122

DTC 15 Diagnostic Table................................................................................................................................... 122

5.13 DTC 16 – Fuel Level System ............................................................................................................................. 124

Circuit Description............................................................................................................................................. 124

Test Description................................................................................................................................................. 124

Diagnostic Table Notes ..................................................................................................................................... 124

DTC 16 Diagnostic Table................................................................................................................................... 124

5.14 DTC 19 – Incorrect SDM Detected .................................................................................................................... 126

Circuit Description............................................................................................................................................. 126

Test Description................................................................................................................................................. 126

Diagnostic Table Notes ..................................................................................................................................... 126

DTC 19 Diagnostic Table................................................................................................................................... 126

5.15 DTC 21 or 22 – Trip Sw itch Faulty.................................................................................................................... 127

Circuit Description............................................................................................................................................. 127

Test Description................................................................................................................................................. 127

Diagnostic Table Notes ..................................................................................................................................... 127

DTC 21 or 22 Diagnostic Table ......................................................................................................................... 127

5.16 DTC 24 – EEPROM Checksum Failure ............................................................................................................. 129

Circuit Description............................................................................................................................................. 129

Test Description................................................................................................................................................. 129

Diagnostic Table Notes ..................................................................................................................................... 129

DTC 24 Diagnostic Table................................................................................................................................... 129

6 Diagnostics For Non DTC Faults......................................................................................................130

Diagnosis For Hard-wired Input Signals.......................................................................................................... 130

Diagnosis For Serial Data Input Signals.......................................................................................................... 130

6.1 Front Fog Lamp Indicator Not Working........................................................................................................... 131

Circuit Description............................................................................................................................................. 131

Test Description................................................................................................................................................. 131

Instrumentation Page 12C – 5

Page 12C – 5

Diagnostic Table Notes ..................................................................................................................................... 131

Front Fog Lamp Indicator Not Working Diagnostic Table.............................................................................. 131

6.2 Turn Signal Indicator......................................................................................................................................... 132

Circuit Description............................................................................................................................................. 132

Test Description................................................................................................................................................. 132

Diagnostic Table Notes ..................................................................................................................................... 132

Turn Signal Indicator Diagnostic Table ........................................................................................................... 133

6.3 High Beam Indicator.......................................................................................................................................... 134

Circuit Description............................................................................................................................................. 134

Test Description................................................................................................................................................. 134

Diagnostic Table Notes ..................................................................................................................................... 134

High Beam Indicator Diagnostic Table ............................................................................................................ 134

6.4 Security Status Indicator................................................................................................................................... 135

6.5 ABS OFF Warning Indicator – V6 ..................................................................................................................... 136

Circuit Description............................................................................................................................................. 136

Test Description................................................................................................................................................. 136

Diagnostic Table Notes ..................................................................................................................................... 136

ABS OFF Warning Indicator – V6 Diagnostic Table........................................................................................ 136

6.6 ABS OFF Warning Indicator – V8 ..................................................................................................................... 137

ABS OFF Warning Lamp Operation ................................................................................................................. 137

Circuit Description............................................................................................................................................. 137

Test Description................................................................................................................................................. 137

Diagnostic Table Notes ..................................................................................................................................... 137

ABS OFF Warning Indicator – V8 Diagnostic Table........................................................................................ 137

6.7 Cruise Control – V6............................................................................................................................................ 138

Circuit Description............................................................................................................................................. 138

Test Description................................................................................................................................................. 138

Diagnostic Table Notes ..................................................................................................................................... 138

Cruise Control – V6 Diagnostic Table.............................................................................................................. 138

6.8 Cruise Control – V8............................................................................................................................................ 140

Circuit Description............................................................................................................................................. 140

Test Description................................................................................................................................................. 140

Diagnostic Table Notes ..................................................................................................................................... 140

Cruise Control (V8) Diagnostic Table............................................................................................................... 140

6.9 Low Traction Control Display – V6................................................................................................................... 142

Circuit Description............................................................................................................................................. 142

Test Description................................................................................................................................................. 142

Diagnostic Table Notes ..................................................................................................................................... 142

Low Traction Control Display – V6 No ESP Diagnostic Table....................................................................... 142

Low Traction Control Display – V6 With ESP Diagnostic Table.................................................................... 142

6.10 Low Traction Control Display – V8................................................................................................................... 143

Circuit Operation................................................................................................................................................ 143

Test Description................................................................................................................................................. 143

Diagnostic Table Notes ..................................................................................................................................... 143

Low Traction Control Display – V8 Diagnostic Table..................................................................................... 143

6.11 Alternator Warning – V6.................................................................................................................................... 144

Operation............................................................................................................................................................ 144

Circuit Description............................................................................................................................................. 144

Test Description................................................................................................................................................. 144

Diagnostic Table Notes ..................................................................................................................................... 144

Alternator Warning – V6 Diagnostic Table....................................................................................................... 144

6.12 Alternator Warning – V8.................................................................................................................................... 145

Operation............................................................................................................................................................ 145

Circuit Description............................................................................................................................................. 145

Test Description................................................................................................................................................. 145

Diagnostic Table Notes ..................................................................................................................................... 145

Alternator Warning – V8 Diagnostic Table....................................................................................................... 145

Instrumentation Page 12C – 6

Page 12C – 6

6.13 Trip Computer Switch........................................................................................................................................ 146

Operation............................................................................................................................................................ 146

Circuit Description............................................................................................................................................. 146

Test Description................................................................................................................................................. 146

Diagnostic Table Notes ..................................................................................................................................... 146

Trip Computer Switch Diagnostic Table.......................................................................................................... 146

6.14 Instrument Illumination..................................................................................................................................... 148

Operation............................................................................................................................................................ 148

Circuit Description............................................................................................................................................. 148

Test Description................................................................................................................................................. 148

Diagnostic Table Notes ..................................................................................................................................... 148

Instrument Illumination Diagnostic Table........................................................................................................ 148

6.15 Brake Fail / Park Brake Warning....................................................................................................................... 150

Brake Fail / Park Brake Warning....................................................................................................................... 150

Operation ....................................................................................................................................................... 150

Circuit Description.......................................................................................................................................... 150

Brake Fluid Warning.......................................................................................................................................... 150

Operation ....................................................................................................................................................... 150

Circuit Description.......................................................................................................................................... 150

Test Description................................................................................................................................................. 150

Diagnostic Table Notes ..................................................................................................................................... 150

Brake Fail / Park Brake Warning Diagnostic Table......................................................................................... 151

6.16 Speedometer Diagnosis.................................................................................................................................... 152

Circuit Description – V6 .................................................................................................................................... 152

Circuit Description – V8 .................................................................................................................................... 152

Test Description................................................................................................................................................. 152

Diagnostic Table Notes ..................................................................................................................................... 152

Speedometer Diagnostic Table......................................................................................................................... 152

6.17 Tachometer Diagnosis ...................................................................................................................................... 154

Circuit Description – V6 .................................................................................................................................... 154

Circuit Description – V8 .................................................................................................................................... 154

Test Description................................................................................................................................................. 154

Diagnostic Table Notes ..................................................................................................................................... 154

Tachometer Diagnostic Table........................................................................................................................... 154

6.18 Coolant Temperature Gauge Diagnostic ......................................................................................................... 156

Circuit Description – V6 .................................................................................................................................... 156

Circuit Description – V8 .................................................................................................................................... 156

Test Description................................................................................................................................................. 156

Diagnostic Table Notes ..................................................................................................................................... 156

Coolant Temperature Gauge Diagnostic Table............................................................................................... 156

6.19 Fuel Level Gauge Diagnosis............................................................................................................................. 157

Circuit Description – V6 .................................................................................................................................... 157

Circuit Description – V8 .................................................................................................................................... 157

Test Description................................................................................................................................................. 157

Diagnostic Table Notes ..................................................................................................................................... 157

Fuel Level Gauge Diagnostic Table.................................................................................................................. 157

6.20 Serial Data Communication .............................................................................................................................. 158

General Information........................................................................................................................................... 158

7 Service Operations.............................................................................................................................159

7.1 Instrument Cluster Removal And Reinstallation............................................................................................. 159

Trim Removal and Reinstallation ..................................................................................................................... 159

Instrument Removal and Reinstallation........................................................................................................... 159

Sensor Removal and Reinstallation................................................................................................................. 159

Trip Computer Sw itch Removal and Reinstallation........................................................................................ 159

Trip Computer Switch Testing.......................................................................................................................... 159

Instrumentation Page 12C – 7

Page 12C – 7

7.2 Programming...................................................................................................................................................... 160

Tech 2 Instrument Cluster Configuration. ....................................................................................................... 160

Programming.................................................................................................................................................. 160

Police Speedo Calibration.............................................................................................................................. 160

Fuel Gauge Calibration................................................................................................................................... 160

Configuration.................................................................................................................................................. 160

Odometer Reset............................................................................................................................................. 160

Speedometer Calibration................................................................................................................................ 160

Reset Service Interval.................................................................................................................................... 160

Reset Trip Computer Settings........................................................................................................................ 160

Fuel Calibration Settings ................................................................................................................................ 161

Fuel Gauge Calibration...................................................................................................................................... 161

Fuel Calibration Details..................................................................................................................................... 161

Configuration.................................................................................................................................................. 161

Country........................................................................................................................................................... 161

Engine Type................................................................................................................................................... 162

Speedometer Pulses...................................................................................................................................... 162

Vehicle Speed PPK Values............................................................................................................................ 162

V8 4-speed Auto............................................................................................................................................. 162

V6 5-speed Auto............................................................................................................................................. 163

SRS Configuration.......................................................................................................................................... 163

Transmission Type......................................................................................................................................... 163

Police Mode.................................................................................................................................................... 163

Seat Belt Warning .......................................................................................................................................... 164

Program Settings............................................................................................................................................ 164

4 and 5 Speed Automatic Transmission.......................................................................................................... 164

Transmission Programming............................................................................................................................ 164

Odometer ....................................................................................................................................................... 164

Speedometer Calibration .................................................................................................................................. 165

Reset Service Interval........................................................................................................................................ 165

Reset Trip Computer Settings .......................................................................................................................... 165

8 Special Tools ......................................................................................................................................166

Instrumentation Page 12C – 8

Page 12C – 8

1 General Information

This document contains information on the operation, diagnosis, self testing and programming of the instrument clusters.

Should it be necessary to electric weld on a

vehicle, removal of the instrument cluster is

mandatory. Failure to do so will result in

damage to the instrument gauge circuitry.

NOTE

If the battery is disconnected, the following

accumulative values are reset:

• Trip time

• Trip distance

• Fuel used

• Average fuel

• Average speed

• Stop watch (if enabled and displaying a non

zero figure)

1.1 General Description

A trip computer is standard equipment on all vehicles; refer to the following for an explanation of trip computer functions

refer to 1.6 Trip Computer.

The instrument clusters fitted to all vehicles have a multi function display (MFD), which displays messages from various

vehicle systems including the engine, transmission, ABS and entertainment system. The MFD supplements the warning

indicators by displaying a more precise message; all clusters feature a number of warning indicators of different colours

that are illuminated by LED’s. For further information, refer to 1.3 Instrument Cluster Operation.

Communication protocol between the instrument cluster and the BCM is via the secondary UART bus.

On all vehicles, the clock is incorporated into the multi-function display situated above the radio mounting location.

Instrument cluster illumination is by light emitting diodes (LED’s) within the instrument cluster. The LED’s are not

serviceable and should any of them fail the instrument cluster needs to be replaced.

NOTE

• A difference of ±2 km/h may be noticed when

comparing the analogue speedometer with

the digital MFD reading, this is normal and

within design specifications.

• Only left-hand drive vehicles have the

instrument cluster’s door ajar indicator

activated.

Instrumentation Page 12C – 9

Page 12C – 9

Instrument Cluster

Figure 12C – 1

Legend

1 Multi-function Display 2 Warning Indicators 3 Trip Computer Display

NOTE

• When installing a new instrument cluster, the

original odometer reading, together with other

important parameters, must be transferred

into the replacement instrument cluster.

• The instrument cluster is not a serviceable

item if there is any internal fault the instrument

cluster must be replaced.

Instrument Cluster Warning Indicators

LED Warning Indicator Table

Warning

Indicator

ABS

Alternator

Brake

(Park/Fail)

Front Fog

High Beam

Left Turn Arrow

Right Turn

Arrow

Seatbelt

Security

SRS

Colour

Amber

Red

Green

Blue

Green

Red

LVL4 WL X X X X X X X X X X

LVL5 WL X X X X X X X X X X

Instrumentation Page 12C – 10

Page 12C – 10

MFD Information Messages

MDF Information

Messages

Cruise

Active

Cruise

Over

speed

Power

Shift

PRNDL

Traction

Off

LVL4 WL X X X X X X

LVL5 WL X X X X X X

MFD Animated Graphics

MFD Graphics

ABS

Airbag / SRS

Alternator

Audio

Check

Powertrain

High Temp

Low

Coolant

Low Fuel

Low Oil

Pressure

Low

Traction

Overspeed

Park / Brake

Fail

Rear Lamp

Fail

Traction Off

LVL4 WL X X X X X X X X X X X X X X

LVL5 WL X X X X X X X X X X X X X X

Warning Indicator Symbols

The following warning indicators are located beneath the temperature gauge on the left-hand side of the instrument

cluster and beneath the fuel gauge on the right-hand side of the instrument cluster. LED’s illuminate the indicators.

Left-hand Side Right-hand Side

ABS Off (Amber) Alternator Fail (Red)

Brake (Red) – (Park Brake On or Brake Fail)

Front Fog Lamps On (Green)

Seat Belt (Red)

Security System On (Red)

SRS Fault (Red)

NOTE

The Alternator fail warning indicator will

extinguish 6 seconds after the ignition is switched

on with the engine not running.

Instrumentation Page 12C – 11

Page 12C – 11

1.2 Instrument Cluster Illumination

The headlamp switch incorporates a variable intensity instrument cluster illumination control (slider), and a four-position

switch for off, parking, headlamps on and auto headlamps on switch mode. In auto headlamps on mode, the instrument

cluster illumination is dependant upon whether the lights are on or off.

With the headlamp switch in the OFF position, the MFD illumination (or the trip computer windows if fitted) are set to

maximum backlighting. In any of the other positions, the MFD illumination (or trip computer windows) are controlled by

the illumination slider on the headlight switch.

The slider on the headlamp switch controls the dial, pointer and MFD illumination. Moving the slider varies an input

voltage to the body control module (BCM), which in turn sends an illumination level signal to the instrument cluster via the

serial data communications bus. The instrument cluster interprets the illumination level signal and controls the instrument

clusters illumination level accordingly, refer to Section 12J body control module.

Chimes

An audible warning chime is incorporated in the instrument cluster. This feature is used to emphasise the warning

conditions with the tone and repetition rate of the chime being variable for the warning messages.

Instrumentation Page 12C – 12

Page 12C – 12

1.3 Instrument Cluster Operation

Ignition ON – Welcome Sequence Holden

When the ignition switch is turned to the ON position, a vehicle system check is performed and the status is displayed on

the MFD. The system check displays the following if there are no warnings or service reminders active.

Figure 12C – 2

After 0.5 second.

Figure 12C – 3

After 1.0 second.

Figure 12C – 4

After 2.0 seconds.

Figure 12C – 5

NOTE

If the driver invokes the Options Menu, eg, MODE

is held while ignition is keyed on, the System

Check will be carried out in the background and

not displayed.

Instrumentation Page 12C – 13

Page 12C – 13

1.4 Ignition On System Check

During the System Check the PRNDL icon or any other icon that can be turned on or off, or is on by default from the last

ignition cycle, will be displayed at the System Check start up.

If the System Check detects a warning or alarm, the MFD displays it immediately. If a warning or alarm is displayed and

then acknowledged by the driver (depending on the fault message) by pressing the MODE button, the Welcome

Sequence is bypassed and the MFD defaults to the last screen that was displayed prior to the last ignition key off.

If a service reminder is active, it will be displayed for 10 seconds before the Welcome Sequence. If no service reminder is

active, the Welcome Sequence continues. If more than one service reminder is active, they will be displayed for a total of

10 seconds. When the service reminders are displayed, pressing the trip computer switch MODE button allows scrolling

through the service reminders.

Pressing the trip computer switch MODE button at any stage throughout the System Check will display the trip computer

screen. The System Check will continue operating in the background.

To operate the MODE selection button correctly it is important to only press it momentarily to advance to the next option

screen.

When the System Check is completed, the Options Menu is

displayed for 3 seconds if the vehicle speed is below

10 km/h, refer to 1.8 Customisation Mode for further details

on the Options Menu.

If the MODE button is pressed or the screen times-out

(3 seconds), the Options Menu disappears and reverts to

the last screen displayed on the last key off for that priority

key. Figure 12C – 6

To display the odometer screen, tap the MODE button until

the screen is displayed.

Figure 12C – 7

NOTE

• If the driver invokes the options menu, eg,

mode is held while ignition is keyed on, the

system check will be carried out in the

background and not displayed.

If the system check picks up a fault it displays it immediately,

refer to 1.7 Multi-function Display, If a fault is displayed and

then erased by the driver (depending on the fault message)

by pressing the MODE button, Figure 12C – 8 is displayed,

which skips the welcome message.

Figure 12C – 8

Ignition OFF

When the ignition switch is turned to the OFF position, the

odometer is displayed in the MFD unless any service

reminders are active. Active service reminders are shown for

10 seconds before displaying the odometer screen.

Figure 12C – 9

Instrumentation Page 12C – 14

Page 12C – 14

1.5 Alarms

The following screens are displayed if an alarm has been

activated and are displayed as soon as the cluster has

received the alarm, even prior to or during a System Check.

The Alarm Activated screen is displayed first for 1 second,

followed by the trigger point screens.

Figure 12C – 10

The display flashes between the Alarm Activated screen and

the area of activation. If there are two or more areas of

activation, the MFD scrolls through the list of activated areas

until the MODE button is pressed. The MFD then proceeds

on to the next screen in the welcome sequence.

Figure 12C – 11

If there has been an unauthorised entry(s) and an MFD warning remains active, the following messages will continue to

alternate until the MODE button is pressed on the trip computer switch or the ignition cycled from off to on.

Figure 12C – 12 Figure 12C – 13

Figure 12C – 14 Figure 12C – 15

Vehicle Immobilisation by ECM or PCM

If an immobiliser fault is detected, the cluster will flash the

Immobiliser Fault screen on the MFD at a 2 Hz duty cycle

(BCM controlled) and the following MFD message is to be

displayed until the mode button is pressed then is displayed

as a CROSS on the RHS of the MFD and is shown in all

screens.

Figure 12C – 16

This screen occurs only in V6 engine vehicles.

Figure 12C – 17

Instrumentation Page 12C – 15

Page 12C – 15

1.6 Trip Computer

Operation

The buttons for the trip computer are located to the left of

the instrument cluster. The four buttons in the switch

assembly are MODE (1), SET (2), UP (3) and DOWN (4).

The trip computer screens are displayed on the MFD, and

the two-side Trip Computer Displays, The MFD is located in

the centre of the instrument cluster below the gauges, and

the two side Trip Computer Displays are located beneath the

temperature gauge on the left, and the fuel gauge on the

right.

To scroll between the functions (three sets of displays),

press the MODE button for less than 2 seconds. The speed

related details are provided in the left Trip Computer

Display, the distance related details are provided in the

MFD, and the fuel related details are provided in the right

Trip Computer Display.

Figure 12C – 18

When the ignition is turned on, the MFD initially displays the start up sequence, and then displays the same trip computer

functions as when the ignition was last turned off as long as the same priority key is used.

The trip computer functions can be reset when the Average Speed or Trip Time details are displayed in the left trip

computer display to reset the trip computer functions, press the SET button. This will reset all functions, with the

exception of Distance to Empty, Overspeed Warning, Odometer, Time to Arrival, Distance to Arrival, Remaining Fuel and

Instantaneous Fuel.

Personal customisation of the trip computer is also possible refer to 1.8 Customisation Mode.

The Distance to Arrival function must be enabled in Customisation Mode before the Time to Arrival / Distance to Arrival /

Remaining Fuel screens can be accessed using the MODE button.

These screens are not available if Trip A and B function is enabled. However, they can be accessed from the Trip B

screens by pressing and holding the MODE button for more than 2 seconds.

NOTE

Cycle through the alarm and warning displays if

active before accessing the trip computer

functions.

Instrumentation Page 12C – 16

Page 12C – 16

Overspeed / Distance to Empty / Instantaneous Fuel

If the MODE button is pressed, the normal Overspeed or Preset Overspeed screens will be displayed, depending on the

previous overspeed selection.

Overspeed

Overspeed On / Off

To turn the Overspeed function on, press and hold the trip

computer switch SET button for at least 2 seconds, and the

Overspeed screen appears.

To turn the Overspeed function off, press and hold the SET

button for at least 2 seconds while the Overspeed screen is

displayed.

Figure 12C – 19

Overspeed Adjustment

To adjust the overspeed value, tap the UP or DOWN

buttons on the trip computer switch until the screen displays

the desired speed. The new overspeed value is now locked

in. The overspeed value is variable between 20 km/h and

200 km/h, and increments or decrements by 5 km/h for each

press of the corresponding button.

Figure 12C – 20

Overspeed Trigger

The Overspeed screen alerts the driver a predetermined

speed has been reached. If the overspeed warning is

triggered, the overspeed figure in a circle flashes for

10 seconds, or until the speed is dropped if overspeed is

maintained for less than 10 seconds.

If the vehicle speed is more than 15 km/h above the set

overspeed value, the display, the overspeed wording and

the overspeed value all flash.

Figure 12C – 21

If the overspeed is maintained for longer than 10 seconds

but it is not more than 15 km/h over the set overspeed

value, the overspeed warning drops back to the O/SPEED

constant icon. The display reverts to the previously

displayed trip computer screen.

If the overspeed is maintained for longer than 10 seconds

and is more than 15 km/h over the set overspeed value, the

overspeed warning drops back to the O/SPEED constant

icon and continues to flash. Figure 12C – 22

NOTE

To scroll to a speed rapidly, press and hold the

UP or DOWN button.

Instrumentation Page 12C – 17

Page 12C – 17

Underspeed

When the vehicle drops below the overspeed setting, the

Underspeed screen is displayed and a chime sounds if the

driver has enabled the underspeed chime in Customisation

Mode, refer to 1.8 Customisation Mode If no underspeed

chime has been set, the screen turns off with no chime or

visual underspeed indication. Figure 12C – 23

Mandatory Overspeed

Tech 2 sets the Mandatory Overspeed value. If the vehicle

travels above this speed, the Mandatory Overspeed screen

is displayed for 10 seconds, or until the speed is dropped. If

overspeed is maintained for less than 10 seconds. The

overspeed value in the circle flashes.

Figure 12C – 24

If the overspeed is maintained for more than 10 seconds but

not by more than 15 km/h over the mandatory overspeed

value, the overspeed warning drops back to the constant

O/SPEED icon. The display reverts to the previously

displayed trip computer screen.

If the overspeed is maintained, and is more than 15 km/h

over the mandatory overspeed value, the constant

O/SPEED icon flashes. Figure 12C – 25

NOTE

If a mandatory overspeed is set, there is no under

speed chime or display. The underspeed function

is turned off when a mandatory overspeed is set.

Preset Overspeed

There are four preset overspeed values, which are 60, 80, 100 and 110 km/h. These are called PRESET 1 to PRESET 4

respectively. To enter the Preset Overspeed function, press the trip computer switch MODE button for more than

2 seconds while the Overspeed screen is displayed. PRESET 1 screen will be displayed. Press the trip computer switch

UP or DOWN buttons to move between the Preset Overspeed screens.

Preset Overspeed Adjustment

NOTE

The vehicle must be stationary to change the

overspeed presets.

To alter the preset, ensure the speed to be changed is

showing, eg, PRESET 2 80 km/h, and then briefly press the

trip computer switch SET button. When the screen display

starts flashing, uses the UP or DOWN button to adjust the

setting. When the preset overspeed value is correct, briefly

press the SET button.

Each preset can be changed in this way and the presets are

automatically arranged in ascending order.

One or more presets can be assigned to ‘OFF’ by reducing

the reset to 0 (OFF). This reduces the number of presets

available. To reset and OFF’ preset, use the UP button to

increase the speed for this preset when the car is stationary.

Figure 12C – 26

Instrumentation Page 12C – 18

Page 12C – 18

Distance to Empty

Distance to empty is an estimate of how far current fuel will last. It is based on previous fuel usage and is frequently

updated. Therefore, as conditions become suited to more economical driving the Distance to empty may actually

increase, for example changing from city to highway driving.

Figure 12C – 27

Instantaneous Fuel

This screen shows instantaneous fuel usage in litres per 100 km when driving. When the vehicle speed drops below

10 km/h the usage is shown in litres per hour.

Average Speed / Odometer / Average Fuel

To reset the Average Speed and Average Fuel displays, press the SET button for less than 2 seconds while this set of

functions is displayed. Note that this also resets the Trip Time / Trip Distance / Fuel Used set of displays. However, to

reset the Average Speed and Average Fuel functions only, hold the SET button down for 8 seconds while this set of

functions is displayed.

Average Speed

This screen shows the average speed (while the engine is running) since the trip computer was last reset.

Odometer

The odometer records kilometres travelled since the vehicle was built.

Average Fuel

Shows average fuel used since the trip computer was reset. After resetting, some large numbers may initially be shown,

due to the short distance travelled and the high fuel used when accelerating.

Figure 12C – 28

If the Trip A and B function has been selected in Customisation Mode, the Average Speed and Average Fuel displays

indicate Trip A.

Instrumentation Page 12C – 19

Page 12C – 19

Figure 12C – 29

Press the trip computer MODE button to advance to the next set of screens.

• If Trip A and B is enabled, the Trip Time A / Trip Distance A / Fuel Used A screens will be displayed, or

• If Trip A and B is not enabled, the Trip Time / Trip Distance / Fuel Used screens will be displayed.

Trip Time / Trip Distance / Fuel Used

To reset the Trip Distance to zero, press the SET button for less than 2 seconds while these functions are displayed.

Note that this also resets the Average Speed and Average Fuel set of displays. However, to reset the Trip Time / Trip

Distance / Fuel Used functions only, hold the SET button down for 8 seconds while these functions are displayed.

Trip Time

Shows the engine running time in hours and minutes since the trip computer was reset. If this exceeds 99 hours and

59 minutes, the trip time is displayed in hours only.

Trip Distance

Shows the kilometres travelled from the start of a particular trip.

Fuel Used

Shows the total litres of fuel consumed since the trip computer was reset.

Figure 12C – 30

• Press the trip computer MODE button to advance to the next set of screens.

• If Trip A and B is enabled, the Trip Time B / Trip Distance B / Fuel Used B screens will be displayed, or

• If Trip A and B is not enabled and the Distance to Arrival function is enabled in Customisation Mode, then the Time

to Arrival / Distance to Arrival / Remaining Fuel screens will be displayed, or

• If neither the Trip A and B function nor the Distance to Arrival function is enabled, then the normal Overspeed or

Preset Overspeed screens will be displayed, depending on the previous overspeed selection.

Time to Arrival / Distance to Arrival / Remaining Fuel

The Time to Arrival / Distance to Arrival / Remaining Fuel screens can be enabled in Customisation Mode as a set. They

cannot be individually activated. Additionally, the Trip A and B function can be enabled from this set of screens by

pressing and holding the MODE button for more than 2 seconds.

To reset the Distance to Arrival to a value set in Customisation Mode, press the SET button for less than 2 seconds while

this set of screens is displayed.

Instrumentation Page 12C – 20

Page 12C – 20

Time to Arrival

Shows trip time to arrival in hours and minutes, based on Distance to Arrival. The Time to Arrival value is displayed as

follows:

• In 1 minute increments if the Time to Arrival is less than 10 minutes.

• In 5 minute increments if the Time to Arrival is more than 10 minutes, but less than 2 hours.

• In 10 minute increments if the Time to Arrival is more than 2 hours, but less than 99 hours and 59 minutes.

• In 1-hour increments if the Time to Arrival is more than 99 hours and 59 minutes.

Distance to Arrival

At the start of a trip, estimate the distance to arrival from maps or road signs. Tap the UP or DOWN buttons until the

display shows the estimated trip distance. When the vehicle is driven the trip computer will constantly update the time to

arrival, based on changing driving speeds.

The UP or DOWN buttons can be used to adjust the distance (kilometres) any time this screen is displayed.

Remaining Fuel

Displays the amount of fuel left in the fuel tank in litres, rounded to the nearest 5 litres. In a low fuel situation, LO will be

displayed in the right trip computer display when the fuel level is down to approximately 8 litres left in the tank.

Figure 12C – 31

Press the trip computer MODE button to advance to the next set of screens:

• Press the MODE button for less than 2 seconds and either the normal Overspeed or Preset Overspeed screens will

be displayed, depending on the previous overspeed selection.

• Press the MODE button for more than 2 seconds, the Trip A and B function will be enabled and the Trip Time B /

Trip Distance B / Fuel Used B screens will be displayed.

Trip Time A/B / Trip Distance A/B / Fuel Used A/B

The Trip A and B function is enabled in Customisation Mode. Normally if this function is enabled, the Distance to Arrival

function is disabled. However, the Distance to Arrival function can be accessed from the Trip B windows by pressing and

holding the MODE button for more than 2 seconds.

When the Trip A and B function has been enabled, the T r ip A windows are normally displayed on the instrument cluster.

Two different sets of trip screens are now counting, the original set of trip screens (labelled A while B is turned on) and a

new set of trip screens, labelled B. This is useful on a long trip, as Trip B can be reset at the beginning of the journey and

then locked away (by pressing the MODE button for more than 2 seconds when Trip B is shown). Time to Arrival /

Distance to Arrival / Remaining Fuel will again be shown on the screen, but Trip B will still be counting away in the

background and the original trip screen can be used for short distances during the journey. Trip B can be viewed at any

time by pressing the MODE button for more than 2 seconds when Distance to Arrival is shown.

Instrumentation Page 12C – 21

Page 12C – 21

Figure 12C – 32

To advance to the Trip B windows, press the MODE button for less than 2 seconds.

Figure 12C – 33

Press the trip computer MODE button to advance to the next set of screens.

Police Mode

Only Tech 2 can enable police Mode. If the Police Mode is

enabled, the digital speedometer is the MFD default display

at ignition on, and the side LCD’s display no information,

refer to.1.9 Police Mode.

NOTE

The Police Mode is not applicable on Omega vehicles.

Figure 12C – 34

1 Press the MODE button to advance to the next screen.

2 If Police Mode has been enabled by Tech 2, then the true speed digital speedometer will be displayed, or

3 If Police Mode has not been enabled and the Stop Watch function is enabled in Customisation Mode, then the Stop

Watch screen will be displayed, or

4 If neither the Police Mode nor the Stop Watch function are enabled, then the next screen displayed will be the

Average Speed / Odometer / Average Fuel screen, or the Average Speed A / Odometer / Average Fuel A screen.

Stop Watch

The Stop Watch screen is enabled in Customisation Mode

refer to 1.8 Customisation Mode.

Pressing the SET button on the trip computer switch starts

and stops the stopwatch. Pressing and holding the MODE

button for more than 3 seconds resets the stopwatch with a

confirming beep.

Figure 12C – 35

1 Press the MODE button to advance to the next screen.

2 If the Stop Watch function is enabled in Customisation Mode, then the Stop Watch screen will be displayed, or

3 If the Stop Watch function is not enabled, then the next screen displayed will be the Average Speed / Odometer /

Average Fuel screen, or the Average Speed A / Odometer / Average Fuel A screen.

Press the MODE button to advance to either the Average Speed / Odometer / Average Fuel screen, or the Average

Speed A / Odometer / Average Fuel A screen.

Instrumentation Page 12C – 22

Page 12C – 22

1.7 Multi-function Display

The following details the functions available in the MFD on both single-window and triple-window instrument clusters.

Constant Icons

The display of Warnings has priority over the display of animated icons.

Cruise Control

Cruise Enabled

1 When the instrument cluster receives the Cruise ON

signal from the ECM (V6) or the TAC (V8), the

CRUISE icon illuminates and the Cruise Enabled

animation is displayed for 2 seconds.

2 The animation is shown initially with the set arrow

flashing.

Figure 12C – 36

After 2 seconds, the animated display extinguishes and the

CRUISE icon remains. The display reverts to the previously

displayed trip computer screen.

Figure 12C – 37

Cruise Active

When the cruise control is activated via the cruise control

switch assembly, the highlighted ACTIVE icon illuminates

and the Cruise Active animation is displayed for 2 seconds.

The animation is shown initially with speedometer needle

moving toward the set arrow.

Figure 12C – 38

After 2 seconds the animated display extinguishes, the

CRUISE icon, and the highlighted ACTIVE icon remain, the

display reverts to the previously displayed trip computer

screen.

Figure 12C – 39

Instrumentation Page 12C – 23

Page 12C – 23

Cruise Inactive

When the cruise control is deactivated via the cruise control

switch assembly, brake, or clutch pedal the highlighted

ACTIVE icon extinguishes immediately and the Cruise

Inactive animation is displayed for 2 seconds.

Figure 12C – 40

After 2 seconds, the animated display extinguishes and the

CRUISE icon remains. The display reverts to the previously

displayed trip computer screen.

Figure 12C – 41

Cruise Off

When Cruise Power is disabled, the CRUISE icon

extinguishes immediately and the Cruise Off animation is

displayed for 2 seconds.

Figure 12C – 42

After 2 seconds, the animated display extinguishes, and the

display reverts to the previously displayed trip computer

screen.

Figure 12C – 43

Instrumentation Page 12C – 24

Page 12C – 24

Power Mode (Automatic Transmission Only)

Power Mode On

When the transmission is placed in Power Mode, the PWR

icon illuminates and the Power Shift animation is displayed

for 2 seconds.

Figure 12C – 44

After 2 seconds, the animated display extinguishes and the

PWR icon remains. The display reverts to the previously

displayed trip computer screen.

Figure 12C – 45

Normal Mode On (Power Mode Off)

When the transmission is changed from Power Mode to

Normal Mode, the PWR icon extinguishes immediately and

the Normal Shift animation is displayed for 2 seconds.

Figure 12C – 46

After 2 seconds, the animated display extinguishes and the

display reverts to the previously displayed trip computer

screen.

Figure 12C – 47

NOTE

If Power Mode is on and the cruise control has

been activated, the Power Mode is turned off by

the ECM (V6) or the PCM (V8), as there is no

Power Mode while the cruise control is active.

When this occurs, the display does not show the

Normal Shift display but instead turns off the

PWR icon. When cruise control is deselected, the

PWR icon illuminates for 3 seconds after the

cruise control has been deselected. This prevents

the PWR icon cycling if the cruise control is

deselected momentarily.

Instrumentation Page 12C – 25

Page 12C – 25

PRND321 (Automatic Transmission) – Normal Shift Mode

When the position of the automatic transmission gear selector is changed, a large icon is displayed on the MFD in

conjunction with the PRND321 constant icon at the bottom of the MFD.

NOTE

• PRNDL is NOT displayed on manual vehicles.

• The 4 Speed Automatic Transmission has

Normal Shift Mode only.

• The 5 Speed Automatic Transmission has

Normal Shift Mode and Active Select Mode.

Four Speed Automatic Transmission

The gear icon remains for 2 seconds after it is selected.

While the transmission selector is moving, the constant

icons reflect the selector movement through the gears.

NOTE

• If any warning is active, the large display

symbol is not shown and only the bracketed

constant icon at the bottom changes when

the automatic transmission selector is

moved. Figure 12C – 48

Five Speed Automatic T ransmission

The gear icon remains for 2 seconds after it is selected.

While the transmission selector is moving, the constant

icons reflect the selector movement through the gears.

NOTE

• If any warning is active, the large display

symbol is not shown and only the bracketed

constant icon at the bottom changes when

the automatic transmission selector is

moved. Figure 12C – 49

“54321” (5 Speed Transmission) – Active Select Mode

The steering wheel is fitted with two gearshift paddles that enable manual selection of the automatic transmission gears.

• The (+) paddle located on the right side of the steering wheel is used to shift up the gears (1,2,3…etc.).

• The (–) paddle on the left side of the steering wheel is used to shift down the gears (5,4,3…etc.).

The active select button (A/S) that either engages or disengages the paddles is located at the bottom of the PRN43L

indicator at the right hand side gearshift lever.

When Active Select Mode is enabled, the MFD will display

an animated icon for 2 seconds, which then minimises to a

small icon in the right side of the MFD display.

Figure 12C – 50

Instrumentation Page 12C – 26

Page 12C – 26

The A/S message will be present on the MFD for the

duration of time the transmission is in Active Select Mode.

Figure 12C – 51

When Active Select Mode is deselected, the MFD will

display the animated icon for 2 seconds before returning the

MFD to the normal operating screen.

The automatic transmission then reverts to Normal Shift

Mode.

Figure 12C – 52

Traction Control or Electronic Stability Program

Traction Control Description

The traction control system (TCS) helps prevent the driving wheels from spinning irrespective of the road conditions and

tyre grip. Once one driving wheel commences to spin, the TCS system reduces the power from the engine and applies

the brake to the spinning wheel, as necessary.

Electronic Control Description (if fitted)

The electronic stability program (ESP) is an advanced feature that works in conjunction with the vehicle’s anti-lock

braking system (ABS), Traction Control System (TCS) and electronic brake assist system (EBA). The ESP system

assists in maintaining the vehicle’s stability by providing intervention when the vehicle’s grip level is exceeded (such as a

sudden lane change, slippery or unexpected road conditions). Refer to Section 5B ABS/TCS/ESP for further information.

Traction Control Off

When the traction control is turned off (by depressing the

button below the PRNDL indicator next to the gearshift

lever) or a fault occurs, the TRAC OFF icon illuminates

immediately and the Traction Control Off animation is

displayed for 2 seconds.

Figure 12C – 53

After 2 seconds, the animated display extinguishes and the

TRAC OFF / ESP OFF icon remains. The display reverts to

the previously displayed trip computer screen.

Figure 12C – 54

Instrumentation Page 12C – 27

Page 12C – 27

Traction Control or ESP On

When the traction control or the electronic stability program is turned on, the TRAC OFF icon extinguishes immediately

and the Traction Control On or Stability Control On animation is displayed for 2 seconds.

Figure 12C – 55

This display is for the Traction Control function.

Figure 12C – 56

This display is for the Electronic Stability Program.

After 2 seconds, the animated display extinguishes, and the

display reverts to the previously displayed trip computer

screen.

Figure 12C – 57

If Fitted the ESP animation is displayed while driving it

indicates that ESP has sensed a low stability event is

occurring and the ESP is assisting the vehicle to maintain

stability.

Figure 12C – 58

If the Stability Ctrl Off animation illuminates while driving,

without the ESP being turned off by the driver, it indicates

that the ESP system is no longer functioning.

Figure 12C – 59

Radio Settings

The radio information is displayed in the warning icon location on the left-hand side of the MFD. If a warning is active, the

radio information will be overridden, as all warning messages have priority.

Radio On

This display appears when the radio is first switched on and

with no alerts or warnings set.

Figure 12C – 60

Instrumentation Page 12C – 28

Page 12C – 28

When the radio source or the radio bands are selected, the

display will be shown for 2 seconds.

Figure 12C – 61

If the radio is on when the ignition is turned on, the MFD

displays trip computer information and the radio information

is shown on the left-hand side of the MFD in the small

constant icon location.

Figure 12C – 62

Volume

This display is shown if the radio volume is adjusted up or

down.

The volume indication shown is a number corresponding to

the value sent to the instrument cluster by the radio.

Figure 12C – 63

NOTE

• At ignition key on, the instrument cluster

detects the presence of the original equipment

radio by a message response from the radio

via the serial data communication bus. If the

vehicle has, no radio fitted or the driver has

fitted a different radio, the radio information on

the display is not shown. Additionally the

Diagnostic Trouble Code (DTC) associated

with the radio may be permanently set.

• If the trip computer MODE button is pressed,

the main MFD radio message is cancelled

and the trip computer function is returned.

The radio information display on the left hand

side of the MFD remains.

When the radio bands are being selected, the following main displays are shown in sequence for 2 seconds.

Once a band has been selected, the display reverts to the secondary small icon of the station band and frequency with

the odometer display.

If a preset station is being selected or scrolled through, the MFD will display the station frequency and preset number it is

stored in, The display will be shown for 2 seconds once it has been selected and then revert to the small icon on the right

of the MFD.

Instrumentation Page 12C – 29

Page 12C – 29

For the AM band:

Figure 12C – 64 Figure 12C – 65

For the FM 1 band:

Figure 12C – 66 Figure 12C – 67

For the FM 2 band:

Figure 12C – 68 Figure 12C – 69

For the AM ASM band:

Figure 12C – 70 Figure 12C – 71

For the FM ASM band:

Figure 12C – 72 Figure 12C – 73

When the radio is tuning or seeking a frequency, the MFD will display the radio band and the frequency scrolling. If the

radio comes across a preset station while scrolling through the frequency during a tune or seek, this preset number will

be displayed in the preset location on the display.

Once the frequency has stopped scrolling and the driver has stored or started listening to the station, the frequency of the

radio station will be displayed for 2 seconds and then revert back to the small icon on the right of the MFD.

Instrumentation Page 12C – 30

Page 12C – 30

Compact Disc (CD)

When the CD source is selected, this display is shown for

2 seconds.

Figure 12C – 74

Once the CD source has been selected, the display reverts

to a small icon. The small icon displays the current CD

number and the track number.

Figure 12C – 75

When the driver or the radio head unit changes tracks or

discs, the MFD displays the disc and track information.

Once the change is completed, the display remains for

2 seconds.

Figure 12C – 76

If the CD changer is changing discs, it shows this display for

the disc and track numbers and then drops back with the

same information in the small icon location.

Figure 12C – 77

After 2 seconds, the display will revert to a small display.

Figure 12C – 78

When the driver is informed on when to remove or insert a CD, the following is displayed on the MFD when necessary.

Figure 12C – 79 Figure 12C – 80

This display remains until a disc is inserted or removed, or the driver presses the MODE button to go to the last trip

computer function. When this occurs there are no small message icons. This is also implemented for Load Disc, Eject

Disc and Please Wait.

Instrumentation Page 12C – 31

Page 12C – 31

The MFD presents this message when the single slot CD

changer is loading a disc number when inserting a disc, or

when the CD changer is changing a disc. This message is

displayed while the CD is loading. The message remains

until the next insert or remove disc message or the track

disc message is displayed. If the driver presses the MODE

button, the message is cancelled and the MFD goes to the

last trip computer function.

Figure 12C – 81

If the driver has selected Load All Discs, the following

display is presented for 2 seconds unless the driver presses

the MODE button and the display reverts to the last trip

computer function.

Figure 12C – 82

If the driver has elected to eject a single CD, the display

shows the number of the CD being ejected. The display

remains until the CD is ejected or the driver presses the

MODE button to revert to the last trip computer function.

Figure 12C – 83

If the driver has elected to eject all the discs in the CD

changer, the display shows this message. The display

remains until the CDs are ejected or the driver presses the

MODE button to revert to the last trip computer function.

Figure 12C – 84

If the CD changer is performing a function and the driver

should wait before selecting the next operation, a Please

Wait display appears.

Figure 12C – 85

Instrumentation Page 12C – 32

Page 12C – 32

Audio Settings

When the audio settings are selected, the MFD shows the current entertainment system settings. The driver can scroll

through these parameters from the entertainment system. Once the final adjustment has been made, the display is

shown for 2 seconds before reverting to the original trip computer function.

NOTE

If the entertainment system fitted does not include

a particular function, the screen for that function

will not be displayed.

Bass Settings

The range of Bass adjustment is from –6 to +6 with STD (0)

being the standard setting.

NOTE

On models fitted with a pre-programmed

equalizer function, the bass function is replaced

by the boost function when the equaliser is

operating. Figure 12C – 86

Treble Settings

The range of Treble adjustment is from –6 to +6 with

STD (0) being the standard setting.

NOTE

On models fitted with a pre-programmed

equalizer function, the treble function is replaced

by the boost function when the equaliser is

operating. Figure 12C – 87

Balance Settings

The Balance adjustment shifts the sound between the left

and right speakers.

The range of adjustment for Balance is from L6 to R6 with

STD (0) being the standard setting.

Figure 12C – 88

Fader Settings

The Fader adjustment shifts the sound between the front

and rear speaker.

The range of adjustment for Fader is from F6 to R6 with

STD (0) being the standard setting.

Figure 12C – 89

Instrumentation Page 12C – 33

Page 12C – 33

Boost Settings

On models fitted with a pre-programmed equalizer function,

the sound level can be boosted or cut to highlight the

frequency responses found in various types of music.

The range of Boost adjustment, is from –2 to +2 with

STD (0) being the standard setting.

Figure 12C – 90

Phone Display

When the audio system head unit detects a phone is

connected and is in use, the MFD shows the message Voice

In.

Refer to Section 12G Cellular Phone for more details as to

how the telephone connects into the vehicle.

Figure 12C – 91

After 2 seconds the MFD, display reverts to a small wording

in the icon location on the left.

The MFD shows the status or if a source change has

occurred, it then drops back to the small icon location.

Figure 12C – 92

Pause Display

When the audio system head unit source is paused in CD

mode the MFD shows CD Paused.

Figure 12C – 93

After 2 seconds, the display reverts to small wording in the

icon location on the left.

When the Pause function is switched off, the small icon on

the MFD extinguishes.

Figure 12C – 94

Instrumentation Page 12C – 34

Page 12C – 34

Animated Warnings

There are effectively three warning levels. The Level 0 Warning instantly overrides all displays, both warning and

otherwise. This warning can only be cleared by removing the condition, i.e. removing the redline condition.

All current Level 1 Warnings will be displayed after the System Check has been completed and before any current

Level 2 Warnings. If a Level 2 Warning is being displayed and there are new Level 1 and Level 2 Warnings, the new

Level 1 Warning/s are displayed before the Level 2 Warnings. All current warnings are displayed in a cycle until the driver

acknowledges each by pressing the trip computer switch MODE button.

Level 1 Warnings Level 2 Warnings

High Temperature

Brake (See Note 1)

Low Oil Pressure (See Note 1)

Check Powertrain (See Note 1)

SRS (See Note 1)

Alternator

Seat Belt

Low / Very Low Petrol

Low Tyre Pressure (WL-LVL5 only)

Very Low Tyre Pressure (WL-LVL5 only)

Reduced Performance Mode

Limp Home Mode

Immobiliser Fault

Low Traction (See Note 1)

ESP Active (See Note 1)

Park Lamp Fail

Stop Lamp Fail

Stop Lamp Fuse Fail

ABS (See Note 1)

Traction Control Off (See Note 1)

ESP Failed (See Note 1)

Rest Reminder

No Communication

Fuel Sender Error

Cruise Enabled

Active Select

NOTE 1

• The current state of the above listed warning

messages will be ignored when the ignition is

switched on for the System Check

(5 seconds), and then once again when the

engine cranks and starts (running). This is to

enable the Tech 2 diagnostics to be carried

out on modules that have sent their warning

messages to the instrument cluster without

the engine running. A chime accompanies all

of the above-listed warnings.

• If more than one warning occurs and reverts

to a small icon on the right of the MFD, the

warnings cycle for 1 second each until the

warning condition is cleared.

Instrumentation Page 12C – 35

Page 12C – 35

Engine Warning Messages

Low Oil Pressure

The Check Oil (low oil pressure) warning is active when the

low oil pressure bit in the ECM (V6) or PCM (V8) poll

response is active and the engine speed has equalled or

exceeded 150 r.p.m for at least 5 seconds.

A large oil can with droplets flowing from the spout is shown

on the MFD.

Figure 12C – 95

When the MODE button on the trip computer switch is

pressed, the animated symbol reverts to a small oilcan icon

on the right of the MFD.

The small icon remains illuminated until the problem is

rectified.

Figure 12C – 96

Over Temperature

The Over Temperature warning is active when the engine

temperature value in the ECM (V6) or PCM (V8) poll

response equals or exceeds the over-temperature value set

in the instrument cluster.

A large thermometer over flowing water is shown on the

MFD.

A chime sounds with this warning.

The icon remains until the problem is rectified. Figure 12C – 97

When the MODE button on the trip computer switch is

pressed, the animated symbol reverts to a small over

temperature icon on the right of the MFD.

The small icon remains illuminated until the problem is

rectified.

Figure 12C – 98

Alternator

The Alternator warning (Check Alternator) is active when the

Alternator input to the instrument cluster is active and the

engine speed has equalled or exceeded 150 r.p.m for at

least 5 seconds.

A fault in the Alternator system illuminates the battery

warning indicator and the animated icon on the MFD if the

engine is running.

A chime sounds with this warning.

The MFD icon is displayed until the MODE button on the trip

computer switch is pressed. The MFD then reverts to the

previously displayed trip computer screen.

The Alternator fail warning light will extinguish 6 seconds

after the ignition is turned on with the engine not running.

Figure 12C – 99

Instrumentation Page 12C – 36

Page 12C – 36

Check Powertrain – Emissions Related Fault

When a fault in the powertrain is detected, the Check

Powertrain warning message is displayed in the MFD as

shown.

A chime sounds with this warning.

The large animated Check Powertrain icon is displayed on

the MFD. The lightning bolt in the centre of the icon flashes

until the MODE button on the trip computer switch is

pressed. Figure 12C – 100

When the MODE button on the trip computer switch is

pressed, the display reverts to a small icon on the right of

the MFD.

The icon remains until the problem is rectified.

Figure 12C – 101

Service Vehicle Soon – Non Emissions Related Fault

The Service Vehicle Soon message is displayed if the ECM

(V6) or the PCM (V8) has detected an engine fault. It

appears as a large warning symbol.

A chime sounds with this warning.

Figure 12C – 102

When the MODE button on the trip computer switch is

pressed, the display reverts to the letters “SVS” on the right-

hand side of the MFD.

The “SVS” reminder remains on the MFD until the problem

is rectified.

Figure 12C – 103

Safety Mode Reduced Performance

The Electronic Throttle Control (ET C-V6) or Throttle

Actuator Control (TAC-V8) feature is implemented on all

models. If the ECM (V6)or the PCM (V8) detects a fault

within the powertrain, it may limit the throttle control normally

available to the driver, effectively placing the vehicle in

Safety Mode that results in reduced power being supplied by

the engine to the transmission.

Figure 12C – 104

When the MODE button on the trip computer switch is

pressed, the display reverts to a safety symbol on the right

of the MFD.

The safety symbol remains on the MFD until the problem is

rectified.

Figure 12C – 105

Instrumentation Page 12C – 37

Page 12C – 37

Rear Lamp Failure Warning Messages

NOTE

This feature is active only in WL level 4 vehicles.

Rear Brake Bulb Failure

The stop lamp circuits are monitored by the BCM. The Rear

Brake Bulb Fail warning is active when the rear brake bulb

failure bit in the BCM broadcast message is set.

A large bulb with a flashing exclamation mark is shown on

the MFD.

This warning indicates that a fault has been detected in the

rear brake lamps or the high-mount brake lamp. Figure 12C – 106

When the MODE button on the trip computer switch is

pressed, the animated symbol reverts to a small bulb failure

icon on the right of the MFD.

The small icon remains illuminated until the problem is

rectified.

Figure 12C – 107

Rear Lamp Bulb Failure

The rear park lamp circuits are monitored by the BCM. The

Rear Lamp Bulb Fail warning is active when the rear lamp

failure bit in the BCM broadcast message is set.

A large bulb with a flashing exclamation mark is shown on

the MFD.

This warning indicates that a fault has been detected in the

rear park lamps or the licence plate lamps. Figure 12C – 108

When the MODE button on the trip computer switch is

pressed, the animated symbol reverts to a small bulb failure

icon on the right of the MFD.

The small icon remains illuminated until the problem is

rectified.

Figure 12C – 109

Rear Lamp Fuse Failure

The rear brake lamp fuse circuit is monitored by the BCM.

The Rear Lamp Fuse Fail warning is active when the rear

lamp fuse failure bit in the BCM broadcast message is set.

A large bulb with a flashing exclamation mark is shown on

the MFD.

This warning indicates that a fault has been detected in the

stop lamps fuse or the park lamps fuse. Figure 12C – 110

When the MODE button on the trip computer switch is

pressed, the animated symbol reverts to a small fuse failure

icon on the right of the MFD.

The small icon remains illuminated until the problem is

rectified.

Figure 12C – 111

Instrumentation Page 12C – 38

Page 12C – 38

Vehicle Performance Warning Messages

Low Traction

When a low traction event occurs, the MFD shows the Low

Traction animated symbol and the fixed text warning.

A chime does not accompany the Low Traction warning.

Figure 12C – 112

When the MODE button on the trip computer switch is

pressed, the animated symbol reverts to a small low traction

icon on the right of the MFD.

The small icon remains illuminated as long as the low

traction situation exists.

Figure 12C – 113

ABS Fault

The ABS fault-warning LED is illuminated while the ABS

animated icon is displayed on the MFD.

A chime sounds with this warning.

The ABS text in the centre of the icon flashes until the

MODE button on the trip computer switch is pressed. The

MFD then reverts to the previously displayed trip computer

screen.

The ABS warning indicator illuminates as soon as the ABS

fault is detected and remains illuminated until the problem is

rectified.

Figure 12C – 114

Brake Fail / Park Brake Warning

When the instrument cluster receives a brake fail warning

signal, the vehicle speed is greater than 8 km/h the brake

warning indicator illuminates, and the MFD displays an

animated icon, a chime sounds with this warning. The

exclamation mark in the centre of the icon flashes until the

MODE button on the trip computer switch is pressed the

MFD then reverts to the previously displayed trip computer

screen.

The Brake Fail indicator illuminates as soon as the warning

is detected and remains illuminated until the problem is

rectified.

NOTE

A fault occurring in the Electronic or Hydraulic

Brake Distribution System also uses this warning

message.

Figure 12C – 115

Instrumentation Page 12C – 39

Page 12C – 39

Fuel Warning Messages

Low Fuel (Petrol)

The Low Fuel (petrol) warning is active when the estimated

current fuel level is equal to or less than the low fuel warning

level but greater than the very low fuel warning level. The

large animated low fuel icon is displayed on the MFD.

A chime sounds with this warning.

Figure 12C – 116

When the MODE button on the trip computer switch is

pressed, the distance to empty display is shown for

10 seconds before reverting to the original trip computer

display with a small low fuel icon on the right of the MFD.

The small icon remains until the fuel tank is filled above the

low level.

Figure 12C – 117

Very Low Fuel

The Very Low Fuel (petrol) warning is active when the

estimated current fuel level is equal to or less than the very

low fuel warning level. The large animated very low fuel icon

is displayed on the MFD.

A chime sounds with this warning.

Figure 12C – 118

When the MODE button on the trip computer switch is

pressed, the Distance to Empty display is shown for

10 seconds before reverting to the original trip computer

display with a small flashing very low fuel icon on the right of

the MFD.

The small icon remains flashing until the fuel tank is filled

above the very low level.

Figure 12C – 119

System Fault Warning Message

SRS Airbag and Pretension ers

For vehicles fitted with airbags, the SRS Airbag Fault

warning illuminates the SRS warning lamp indicator and

displays an icon on the MFD when an OPS fault has been

detected.

The MFD icon flashes and the words are stationary until the

MODE button on the trip computer switch is pressed.

A chime sounds with this warning.

The SRS indicator illuminates as soon as the warning is

activated and remains illuminated until the problem is

rectified.

Figure 12C – 120

Instrumentation Page 12C – 40

Page 12C – 40

Rest Reminder Warning

This feature alerts the driver that they may have been

travelling for too long without having a rest.

Once the ignition has been switched on, the instrument

cluster’s Rest Reminder timer will start, and after two hours

of continuous driving, the trip computer automatically

switches over to the trip time on the trip computer window

and the centre MFD displays the Rest Reminder message.

Figure 12C – 121

For low series clusters, the display shown in

Figure 12C – 122 is the only rest reminder message shown.

The Rest Reminder message can only be cancelled by

taking a break for more than 10 minutes with the ignition

turned off.

The Rest Reminder warning will be repeated every two

hours of driving. Figure 12C – 122

Seat Belt Warning

MFD Seat Belt Warning

If the seat belt has not been buckled and after various

periods of time have elapsed and a speed greater than 25

km/h has been reached, then the Seat Belt warning

indicator, the MFD display and the chimes will operate

according to the sequence described in the following table.

Figure 12C – 123

Ignition

Time 1

IGN On + 60 sec’s

or 500 metres

Time 2

Time 1 + 90 sec’s

Time 3

Time 2 + 60 sec’s

Speed

Speed. 25 km/h

Symbol Solid Solid Flash Flash Flash

Chime None Chime 1 None Chime 2

MFD None None None Message

The seat belt warning message on the MFD is removed by

the pressing the MODE button.

The chime and the Seat Belt warning indicator will remain

active until the relevant periods of time have elapsed.

Figure 12C – 124

Instrumentation Page 12C – 41

Page 12C – 41

Trapping Speed

The Trap Speed screen enables the driver to capture the

speed at which the vehicle is travelling. The MFD must be

operating in Digital Speedo mode.

To use the Trap Speed function, press the SET button on

the trip computer switch. The current speed is stored and

displayed for 5 seconds with a confirming beep.

Figure 12C – 125

Trap Speed Reset

After 5 seconds, the display reverts to the current speed on

the Digital Speedometer display. Pressing the UP or DOWN

buttons toggles between the current speed and the stored

speed. Trapping another speed or pressing and holding the

trip computer switch SET button for more than 3 seconds

resets the trap speed.

Resetting is confirmed by a beep. Figure 12C – 126

NOTE

When trap speed is reset, it reverts to the current

speed on the Digital Speedo display. The trap

speed is stored in memory even if the vehicle

ignition is turned off. The trap speed remains

stored unless trapping another speed or resetting

the trapped speed erases it.

Service Items

All Service items, including Service Due, Service Oil, Service Transmission Oil, Service Error and Fuel Sender Errors are

displayed at both the beginning and end of an ignition cycle. The service error message for serial communications is only

displayed when the communications BUS is faulty and not at the beginning or end of ignition cycles.

Reset Service Period

The service reminder can be reset at ignition on.

To enter the reset function, press and hold both the UP and

DOWN buttons together on the trip computer switch while

turning the ignition on.

NOTE

The UP and DOWN buttons must be held for 2

seconds after the ignition switch is turned on. Figure 12C – 127

Reset Oil Display / Reset Transmission Display

Press the SET button on the trip computer switch to reset the particular service item. The display will then revert to the

start up sequence.

If more than one service item is to be displayed, the next service item will be shown and the same procedure will apply to

reset it.

Figure 12C – 128 Figure 12C – 129

Instrumentation Page 12C – 42

Page 12C – 42

Reset Oil Display

When all service items have been reset, the display will be

as above; the No Items message will be displayed. Then the

display will revert to the start up sequence.

Figure 12C – 130

Service Error

If the “Service Error Contact Dealer” animation illuminates

while driving, a fault in the instrument cluster or the

communication data bus is indicated.

Figure 12C – 131

Service Due

Service Period Display

A service reminder is displayed when the ignition is switched

on or off until the trip computer is reset. The service

reminder is displayed for a total of 10 seconds.

To reset the displayed service reminder, press and hold the

SET button for 3 seconds. A confirmation beep sounds upon

reset.

NOTE

When resetting the service reminders, the PCM poll

responses are cleared and the odometer readings for the

last changes are recorded. Tech 2 can access these.

Figure 12C – 132

When the service reminder is reset, the MFD shows the

Service Reset No Items screen.

After 2 seconds, the MFD advances to the System Check.

Figure 12C – 133

First Inspection Od ometer Warning Messages

Sedan First Inspection Due Regular Inspections Du e

V6 V8

WL series vehicles 3,000 km 15,000 km or

12 months 10000 km or

6 months

Techline

Instrumentation Page 12C – 43

Page 12C – 43

Prior to Service Due

Service Due is determined from the odometer reading. The

MFD shows a reminder 1000 km before a service is due.

The service interval becoming due is displayed on the MFD,

and the spanner in the icon flashes. This service reminder is

displayed for up to 10 seconds whenever the ignition is

switched on or off until the service reminder is reset.

Figure 12C – 134

Service Due

When a service is due, the whole icon flashes. This service reminder is displayed for up to 10 seconds whenever the

ignition is switched on or off until the service reminder is reset.

Service Overdue

When a service is overdue by less than 5000 km, the MFD shows a flashing icon for up to 10 seconds whenever the

ignition is switched on or off until the service reminder is reset.

Service Well Overdue

When a service is overdue by more than 5000 km, the MFD shows a flashing icon for up to 10 seconds whenever the

ignition is switched on or off until the service reminder is reset. This event is permanently logged in the instrument cluster

memory (EEPROM) in case of future warranty disputes.

NOTE

When a Service Due reminder is reset, the ECM

(V6) or the PCM (V8) poll responses are cleared

and the odometer readings for the last changes

are recorded. Tech 2 can access these. The next

Service Due reminder will appear 1000 km before

the next scheduled service period.

Fuel Sender Error

Fuel (Petrol) Sender Error

The Fuel Gauge Error screen is displayed if a fault has been

detected with the fuel sender. This means that the fuel

gauge pointer returns to the minimum reading and the MFD

will display the corresponding message and the low Fuel

warning chime then sounds.

Figure 12C – 135

When the MODE button on the trip computer switch is

pressed, the original trip computer screen is displayed with a

small fuel icon on the right of the MFD.

After each ignition cycle, the MFD screen in Figure 12C – 136

will be display ed. After the correct time period or button press,

the fuel gauge error warning comes on again. If this problem

has been rectified or gone away during ignition off, then on the

next ignition cycle there is no w arning, it has been reset.

Use Tech 2 diagnostics to check the appropriate Diagnostic

Trouble Code. The display resets when the problem has

been rectified.

Figure 12C – 136

Instrumentation Page 12C – 44

Page 12C – 44

Programming The Instrument Cluster

When a new instrument cluster is fitted at a General Motors

Retailer, the Program Cluster screen indicates that it must

be programmed to suit the vehicle type and country of

destination.

When the instrument cluster is first powered up, the MFD

shows the message, Program with Tech 2.

No trip computer functions or selections are available when

the ignition is on.

NOTE

If a warning is active on the MFD, it will be

shown until the trip computer switch MODE

button is pressed. When the MODE button is

pressed, the display reverts to having the small

warning icon on the right of the MFD. The

Program with Tech 2 message remains

displayed.

Figure 12C – 137/VY12C389

At ignition off, the MFD shows the Odometer screen and the

Not Programmed message indicates that the instrument

cluster requires programming.

NOTE

If a vehicle alarm is activated, the corresponding

warning message will be displayed. When the

MODE button is pressed, the warning icon will

revert to the small size, but the ‘Program cluster

with Tech 2’ will remain in the MFD.

For further details on programming the instrument cluster,

refer to 7.2 Programming.

Figure 12C – 138

Fuel Calibration Programming

If the cluster does not have a valid code file programmed (i.e. the Index Value and Code Version are both equal to zero),

then fuel gauge readings and the trip computer calculations cannot take place.

Once a valid fuel code file has been entered into the

instrument cluster via Tech 2 the message is removed.

Refer to, 7.2 Programming.

Figure 12C – 139

Instrumentation Page 12C – 45

Page 12C – 45

1.8 Customisation Mode

Customisation Mode enables the driver to turn on or off functions and adjust features. Only features that are fitted to the

vehicle are displayed. If the vehicle is moving at more than 10 km/h while in Customisation Mode, the screen reverts to

the previous trip computer function.

In Customisation Mode, there are help menus to assist drivers to understand the feature they are adjusting. If a

Customisation Menu item is selected and the screen item is not changed for more than 5 seconds, a help screen will then

be displayed to inform the driver how to operate the displayed feature.

To access the options menu turn the ignition key on while pressing the MODE button on the trip computer.

To scroll through the customisation items, press the MODE button on the trip computer switch.

1 Press the trip computer switch MODE button to scroll through to the exit screen, or

2 Drive the vehicle at more than 10 km/h, or

3 Switch the ignition to the OFF position.

NOTE

Customisation Mode is not displayed if an alarm

warning has been activated or a warning symbol

on the instrument cluster has been triggered.

If a warning goes off once the customisation been has been entered, the warning will be displayed to the driver until the

MODE button has been pressed to clear it. It will then disappear until Customisation Mode is exited. Once a normal MFD

screen is being displayed, the warning observed previously will be displayed as an icon on the right side of the MFD.

NOTE

Not all the following customisation items are

available on all Vehicles.

Entering Customisation Mode (Options Menu)

Customisation Mode is accessed via the Options Menu,

which can be displayed when the vehicle is stationary or

moving slowly.

• If the vehicle is stationary, turn the ignition key on

while pressing the MODE button on the trip computer

switch. (If the MODE button is pressed a second time,

the Options Menu disappears and the display reverts

to the previous trip computer function).

• If the vehicle has been started, the System Check

completed and the vehicle speed is less than 10 km/h,

then the Options Menu is displayed for 3 seconds. (If

the vehicle is driven at more than 10 km/h, the Options

Menu disappears and the display reverts to the

previous trip computer function).

With the Options Menu displayed, press the trip computer

UP or DOWN button to enter Customisation Mode.

Figure 12C – 140

When the Customisation Mode is entered, the following

displays show how to reach the Help screens.

Press the MODE button to advance to the next Help screen.

Figure 12C – 141

Instrumentation Page 12C – 46

Page 12C – 46

Press the MODE button to advance to the Restore to

Factory Setting screen.

Figure 12C – 142

NOTE

• If the message is too big for one screen, a

second (or third) screen with more information

appears once the MODE button is pressed,

until the menu item is shown.

• Within the Options Menu there are no fixed

icons displayed around the outside of the

main dot matrix area. If an icon is activated

while in the Options Menu, that icon is

displayed for 2 seconds and then disappears.

Once the Options Menu is exited or the

vehicle speed is greater than 10 km/h when

the Options Menu is locked out, the icons

reappear.

Restore to Factory Settings

The Restore to Factory Settings screen is the first item on

the Options Menu.

NOTE

This function restores the instrument cluster, the

entertainment system and the body control

module to the factory default settings, Refer to

Factory Default Settings.

Use the trip computer switch UP or DOWN button to select

Yes or No.

Figure 12C – 143

Press the MODE button to continue. If Yes is selected as

the option, a 2 second delay allows the following parameters

to be updated before the next screen is displayed.

Figure 12C – 144

Underspeed Chime

When an Overspeed condition has occurred and the vehicle

reduces speed, the Underspeed chime alerts the driver

when the vehicle speed drops back below the set

Overspeed value.

Use the trip computer switch UP or DOWN button to select

Yes or No.

Press the MODE button to continue. If Yes is selected as

the option, the Underspeed chime is activated. Figure 12C – 145

Instrumentation Page 12C – 47

Page 12C – 47

If no selection is made at the Underspeed Chime screen

within 5 seconds, this Help screen message appears.

Press the MODE button to advance to the next Help screen.

Figure 12C – 146

Press the MODE button to return to the Underspeed Chime

screen.

NOTE

• This mode is not available when the cluster

has had Mandatory Overspeed turned on.

• The Underspeed chime is set to Yes if the

Restore to Factory Settings option has been

selected. Figure 12C – 147

Distance to Arrival Display

Use the trip computer switch UP or DOWN button to select

Yes or No.

Press the MODE button to continue. If Yes is selected as

the option, the Distance to Arrival Default screen is

displayed.

NOTE

The Distance to Arrival Display is set to Yes if

the Restore to Factory Settings option has been

selected.

Figure 12C – 148

If no selection is made at the Distance to Arrival Display

screen within 5 seconds, this Help screen message

appears.

Press the MODE button to advance to the next Help screen.

Figure 12C – 149

Press the MODE button to return to the Distance to Arrival

Display screen.

Figure 12C – 150

Instrumentation Page 12C – 48

Page 12C – 48

Distance to Arrival Default

Use the trip computer switch UP or DOWN button to adjust

the Distance to Arrival value. Note that changing this value

changes the displayed Distance to Arrival figure.

The default value for Distance to Arrival is 500 km.

Press the MODE button to continue.

NOTE

The Distance to Arrival Default is set to 500 km if

the Restore to Factory Settings option has been

selected.

Figure 12C – 151

If no selection is made at the Distance to Arrival Default

screen within 5 seconds, this Help screen message

appears.

Figure 12C – 152

If no selection is made at the Distance to Arrival Default

screen within 5 seconds, this Help screen message

appears.

Figure 12C – 153

Press the MODE button to return to the Distance to Arrival

Display screen.

Figure 12C – 154

Trip Computer A and B

Two trip computers can be used to record the details of

separate trips.

Use the trip computer switch DOWN button to select Trip A

only, or press the MODE button to continue.

NOTE

Trip A is enabled if the Restore to Factory

Settings option has been selected. Figure 12C – 155

Use the trip computer switch UP button to select Trip A and

Trip B, or press the MODE button to continue.

Figure 12C – 156

Instrumentation Page 12C – 49

Page 12C – 49

If no selection is made at the Trip Computer A and B screen

within 5 seconds, this Help screen message appears.

Press the MODE button to return to the Trip Computer A

and B screen.

Figure 12C – 157

Stop Watch

Use the trip computer switch UP or DOWN button to select

Yes or No.

Press the MODE button to continue. If Yes is selected as

the option, the Stop Watch screen is enabled.

NOTE

The Stop Watch is set to Yes if the Restore to

Factory Settings option has been selected. Figure 12C – 158

If no selection is made at the Stop Watch screen within

5 seconds, this Help screen message appears.

Press the MODE button to advance to the next Help screen.

Figure 12C – 159

Press the MODE button to return to the Stop Watch screen.

Figure 12C – 160

Rest Reminder

Use the trip computer switch UP or DOWN button to select

Yes or No.

Press the MODE button to continue. If Yes is selected as

the option, the Rest Reminder screen is enabled.

Figure 12C – 161

Press the MODE button to return to the Rest Reminder

screen.

Figure 12C – 162

Instrumentation Page 12C – 50

Page 12C – 50

Radio MFD Messages

Radio Display

The entertainment system parameters can be displayed on

the instrument cluster MFD.

Use the trip computer switch UP or DOWN button to select

On or Off.

Press the MODE button to continue.

NOTE

The Radio Display is set to On if the Restore to

Factory Settings option has been selected. Figure 12C – 163

If no selection is made at the Radio Display screen within

5 seconds, this Help screen message appears.

Press the MODE button to return to the Radio Display

screen.

Figure 12C – 164

Confirmation Beeps

NOTE

The Confirmation Beeps screen displayed will

depend on the level of the audio system fitted to

the vehicle.

Confirmation Beeps – Radio Only

Confirmation beeps can be set to confirm that various

functions of the entertainment system have been completed.

For example storing a radio station.

Use the trip computer switch UP or DOWN button to set to

On or Off.

Press the MODE button to continue.

NOTE

The Confirmation Beeps are set to On if the

Restore to Factory Settings option has been

selected.

Figure 12C – 165

If no selection is made at the Confirmation Beeps screen

within 5 seconds, this Help screen message appears.

Press the MODE button to advance to the next Help screen.

Figure 12C – 166

Instrumentation Page 12C – 51

Page 12C – 51

Press the MODE button to return to the Confirmation Beeps

screen.

Figure 12C – 167

Confirmation Beeps – Radio and CD

Confirmation beeps can be set to confirm that various

functions of the entertainment system have been completed.

For example storing a radio station or loading a CD. The

Confirmation Beeps screen displayed indicates the current

setting.

The confirmation beeps can be set to On, CD Load and

Eject Only or Off.

Figure 12C – 168

Use the trip computer switch UP or DOWN buttons to scroll

through the selection.

Press the MODE button to continue.

Figure 12C – 169

NOTE

The Confirmation Beeps is set to On if the Restore to

Factory Settings option has been selected.

Figure 12C – 170

If no selection is made at the Confirmation Beeps screen

within 5 seconds, this Help screen message appears.

Press the MODE button to advance to the next Help screen.

Figure 12C – 171

Press the MODE button to return to the Confirmation Beeps

screen.

Figure 12C – 172

Instrumentation Page 12C – 52

Page 12C – 52

Speed Dependent Volume

The entertainment system volume can be set to vary

automatically with the speed of the vehicle to compensate

for additional background noise produced inside the vehicle.

The speed dependent volume can be selected between Off /

1 / 2 / 3 / 4 / Max.

Use the trip computer switch UP or DOWN button to scroll

through the selection.

Press the MODE button to continue.

NOTE

The Speed Dependent Volume is set to 2 if the

Restore to Factory Settings option has been

selected.

Figure 12C – 173

If no selection is made at the Speed Dependent Volume

screen within 5 seconds, this Help screen message

appears.

Press the MODE button to advance to the next Help screen.

Figure 12C – 174

Press the MODE button to return to the Speed Dependent

Volume screen.

Figure 12C – 175

Audio Distortion Limiter

The entertainment system incorporates a dynamic distortion

limiting function to monitor the audio output and reduce the

audio level if distortion is detected. The audio distortion

limiter can be enabled or disabled.

Use the trip computer switch UP or DOWN button to select

On or Off.

Press the MODE button to continue.

NOTE

The Audio Distortion Limiter is set to On if the

Restore to Factory Settings option has been

selected.

Figure 12C – 176

If no selection is made at the Audio Distortion Limiter screen

within 5 seconds, this Help screen message appears.

Press the MODE button to advance to the next Help screen.

Figure 12C – 177

Instrumentation Page 12C – 53

Page 12C – 53

Press the MODE button to return to the Audio Distortion

Limiter screen.

Figure 12C – 178

Headlamp Off Delay

The Headlamp Off Delay is a count down timer that

automatically controls the on time of the headlights after the

vehicle has been exited and locked; it is adjustable between

zero and 180 seconds.

Use the trip computer switch UP or DOWN button to

increase or decrease the set value. Pressing the button

once will change the value by 1 second. Press and hold the

button to change the value at a faster rate.

Press the MODE button to continue.

NOTE

The Headlamp Off Delay is set to 1 second if the

Restore to Factory Settings option has been

selected.

Figure 12C – 179

If no selection is made at the Headlights Off Delay screen

within 5 seconds, this Help screen message appears.

Press the MODE button to advance to the next Help screen.

Figure 12C – 180

Press the MODE button to return to the Headlights Off Delay

Time screen.

Figure 12C – 181

Instrumentation Page 12C – 54

Page 12C – 54

Approach Illumination

The headlamps can be requested to provide illumination

when approaching the vehicle at night. When set, activating

the remote UNLOCK button activates this feature. The

approach illumination delay is adjustable between zero and

90 seconds.

Use the trip computer switch UP or DOWN button to

increase or decrease the set value of the delay. Pressing

the button once will change the value by 1 second. Press

and hold the button to change the value at a faster rate.

Press the MODE button to continue.

NOTE

The Headlights Approach Time is set to 30

seconds if the Restore to Factory Settings option

has been selected.

Figure 12C – 182

If no selection is made at the Headlights Approach Time

screen within 5 seconds, this Help screen message

appears.

Press the MODE button to advance to the next Help screen.

Figure 12C – 183

Press the MODE button to return to the Headlights

Approach Time screen.

Figure 12C – 184

Automatic Headlamp Sensitivity

The headlamps can be set to come on automatically when

lighting conditions deteriorate. The headlamp sensitivity can

be set to Early, Normal or Late.

Use the trip computer switch UP or DOWN button to scroll

through the selection.

Figure 12C – 185

Press the MODE button to continue.

Figure 12C – 186

Instrumentation Page 12C – 55

Page 12C – 55

NOTE

The Automatic Headlights Sensitivity is set to

Normal if the Restore to Factory Settings option

has been selected.

Figure 12C – 187

If no selection is made at the Auto Headlights Sensitivity

screen within 5 seconds, this Help screen message

appears.

Press the MODE button to return to the Auto Headlights

Sensitivity screen.

Figure 12C – 188

Interior Courtesy Lamp Timeout

The length of time that the interior courtesy lamp remains

illuminated after opening a door prior to exiting it or

unlocking the vehicle remotely prior to entering it is

adjustable between zero and 255 seconds.

Use the trip computer switch UP or DOWN buttons to

increase or decrease the set value. Pressing the button

once will change the value by 1 second. Press and hold the

button to change the value at a faster rate.

Press the MODE button to continue.

NOTE

The Interior Courtesy Lamp Timeout is set to 30

seconds if the Restore to Factory Settings option

has been selected.

Figure 12C – 189

If no selection is made at the Courtesy Lamp Timeout

screen within 5 seconds, this Help screen message

appears.

Press the MODE button to advance to the next Help screen.

Figure 12C – 190

Press the MODE button to return to the Courtesy Lamp

Timeout screen.

Figure 12C – 191

Instrumentation Page 12C – 56

Page 12C – 56

Ignition Off Courtesy Lamp Timeout

The length of time that the interior courtesy lamp remains

illuminated after the ignition is turned off is adjustable

between zero and 255 seconds.

Use the trip computer switch UP or DOWN button to

increase or decrease the set value. Pressing the button

once will change the value by 1 second. Press and hold the

button to change the value at a faster rate.

Press the MODE button to continue.

NOTE

The Ignition Off Courtesy Lamp Timeout is set to

30 seconds if the Restore to Factory Settings

option has been selected.

Figure 12C – 192

If no selection is made at the Ignition Off Courtesy Lamp

screen within 5 seconds, this Help screen message

appears.

Press the MODE button to return to the Ignition Off Courtesy

Lamp screen.

Figure 12C – 193

Two Stage Unlock

The vehicle can be set to either Two Stage Unlock, or

Unlock All Doors. With two stage unlock, the first press of

the UNLOCK button on the remote coded key unlocks the

drivers door only. Pressing the button, a second time

unlocks the remaining doors. With Unlock ALL Doors, the

first press of the remote UNLOCK button will release all door

locks.

Use the trip computer switch UP or DOWN button to select

Yes or No.

Press the MODE button to continue.

NOTE

The Two Stage Unlock is set to Yes if the

Restore to Factory Settings option has been

selected.

Figure 12C – 194

If no selection is made at the Two Stage Unlock screen

within 5 seconds, this Help screen message appears.

Press the MODE button to advance to the next Help screen.

Figure 12C – 195

Press the MODE button to return to the Two Stage Unlock

screen.

Figure 12C – 196

Instrumentation Page 12C – 57

Page 12C – 57

Auto Lock In Drive

The doors can be automatically locked when the

transmission is shifted out of the Park position. This function

is only available on vehicles fitted with an automatic

transmission.

Use the trip computer switch UP or DOWN button to select

Yes or No.

Press the MODE button to continue.

NOTE

The Auto Lock In Drive is set to No if the Restore

to Factory Settings option has been selected.

Figure 12C – 197

If no selection is made at the Auto Lock In Drive screen

within 5 seconds, this Help screen message appears.

Press the MODE button to return to the Auto Lock In Drive

screen.

Figure 12C – 198

Door Lock Indication

The door lock indication can be selected between the turn

indicators flashing or accompanied by the sounding of the

horn. The selected function also operates when unlocking

the vehicle.

Use the trip computer switch UP button to enable the turn

indicators and horn, or the DOWN button to enable the turn

indicators only.

Press the MODE button to continue. Figure 12C – 199

NOTE

The Door Lock Indication is set to Indicators if

the Restore to Factory Settings option has been

selected.

Figure 12C – 200

If no selection is made at the Door Lock Indication screen

within 5 seconds, this Help screen message appears.

Press the MODE button to return to the Door Lock Indication

screen.

Figure 12C – 201

Instrumentation Page 12C – 58

Page 12C – 58

Accessory Control

The accessories within the vehicle can be turned off at

either ignition off or when a door is opened.

Use the trip computer switch UP or DOWN button to scroll

through the selection.

Press the MODE button to continue.

Figure 12C – 202

NOTE

The Radio and Accessories Timeout period is

set to Door Open if the Restore to Factory

Settings option has been selected.

Figure 12C – 203

If no selection is made at the Accessory Control screen

within 5 seconds, this Help screen message appears.

Press the MODE button to advance to the next Help screen.

Figure 12C – 204

Press the MODE button to return to the Accessory Control

screen.

Figure 12C – 205

Instrumentation Page 12C – 59

Page 12C – 59

Calibration Adjustment

The trip computer can be calibrated for more accurate

distance and fuel flow readings.

Use the trip computer switch UP or DOWN button to select

Yes or No.

Press the MODE button to continue.

If No is selected, Customisation Mode advances to the Exit

Options Menu.

If Yes is selected, the next screen displayed is the Distance

Calibration screen.

Figure 12C – 206

If the Distance Calibration screen is not required, press the

MODE button to advance to the Fuel Calibration screen.

To check the distance calibration figures, align the front

wheels of the vehicle with a highway kilometre shield post

before entering Customisation Mode.

Press the MODE button to display the Trip Distance screen.

Reset the Trip Distance by pressing the SET button for less

than 2 seconds.

Drive to another shield post, between 10 km and 500 km,

and stop with the front wheels aligned with the shield post.

Note the real distance between the shield posts and the

distance on the Trip Distance display. If these distances are

different, enter Customisation Mode / Calibration Adjustment

/ Distance Calibration and use the UP and DOWN buttons to

adjust the distance displayed to the real distance between

the shield posts.

NOTE

The default distance calibration figure is 100%.

The maximum figure is 120%, while the minimum

figure is 80%.

NOTE

Further information for this adjustment can be

found in the owners manual.

Figure 12C –

207

Figure 12C –

208

Figure 12C –

209

Figure 12C – 210

Instrumentation Page 12C – 60

Page 12C – 60

Press the MODE button to advance to the Fuel Calibration

screen.

If the Fuel Calibration screen is not required, press the

MODE button to advance to the Exit Options Menu.

To check the fuel calibration figures, press the MODE button

to display the Fuel Used screen before entering

Customisation Mode. Reset the Fuel Used by pressing the

SET button for less than 2 seconds.

For at least five consecutive fuel fills, record the total litres

added (but no more than 500 litres) according to the service

station fuel meters. Note the real fuel used and the reading

on the Fuel Used display. If these are different, enter

Customisation Mode / Calibration Adjustment / Distance

Calibration / Fuel Calibration and use the UP and DOWN

buttons to adjust the litres displayed to the real figure.

Figure 12C – 211

NOTE

Further information for this adjustment can be

found in the owner’s manual.

Figure 12C – 212

The default fuel calibration figure is 100%. The maximum

figure is 120%, while the minimum figure is 80%.

Press the MODE button to advance to the Exit Options

Menu screen.

Figure 12C – 213

If no selection is made at the Enter Calibration Adjustment

screen within 5 seconds, this Help screen message

appears.

Press the MODE button to advance to the next Help screen.

Figure 12C – 214

Press the MODE button to return to the Enter Calibration

Adjustment screen.

Figure 12C – 215

Instrumentation Page 12C – 61

Page 12C – 61

Digital Speedo

Use the trip computer switch UP or DOWN buttons to select

the Digital Speedometer option.

If no selection is made at the Digital Speedo screen within

5 seconds, a Help screen appears.

Press the MODE button to exit the options menu

Figure 12C – 216

Tyre Pressure Monitor

Use the trip computer switch MODE button to select the

Tyre Pressure Monitor option.

Figure 12C – 217

If no selection is made at the Tyre Pressure Monitor screen

within 5 seconds, this Help screen message appears.

Press the MODE button to advance to the next Help screen.

Figure 12C – 218

Tyre Pressure Units

Use the trip computer switch UP or DOWN button to select

the tyre pressure units (psi) or (KPa).

Press the MODE button to exit the options menu.

Figure 12C – 219

Instrumentation Page 12C – 62

Page 12C – 62

Factory Default Settings

Cluster Parameters BCM Parameters Audio System Parameters

• Underspeed Chime set to No

• Distance to Go Display set to yes

(only low spec vehicles)

• Distance to Go Default set to

500 km (only low spec vehicles)

• Distance to Arrival Display set to

• Distance to Arrival Default set to

500 km

• Trip Computer A and B set to

Trip A

• Stop Watch set to No

• Radio Display set to on

• Rest reminder set to No

• Digital speedometer set to Yes

• Restore BCM Factory Settings

set to No

• Headlamp Off Delay set to

1 second

• Approach Illumination set to

30 seconds

• Automatic Headlamp Sensitivity

set to Normal

• Interior Courtesy Lamp Timeout

set to 30 seconds

• Interior Courtesy Lamp

Timeout – Ignition Off set to

30 seconds

• Intermittent Wiper Speed set to

on (only low spec vehicles)

• Two Stage Unlock set to Yes

• Auto Lock in Drive set to No

• Door Lock Indication set to

Indicators

• Radio and Accessories Timeout

set to Door Open

• Bass set to STD (0)

• Treble set to STD (0)

• Balance set to STD (0)

• Fader set to STD (0)

• Loudness set to on

• Equaliser set to on

• CD Random set to off

• CD Repeat set to off

• Local / Distance set to

Distance

• Display Mode set to Time

• Audio Distortion Limiter set

to on

• Confirmation Beeps set to

• Speed Dependent Volume

set to 2

If no selection is made at the Restore to Factory Settings

screen within 5 seconds, this Help screen message

appears.

Press the MODE button to return to the Restore to Factory

Settings screen.

Figure 12C – 220\

Instrumentation Page 12C – 63

Page 12C – 63

1.9 Police Mode

Tech 2 enables the Police Mode.

If the Police Mode is enabled, the digital speedometer is the

MFD default display at ignition on.

NOTE

• In Police mode, the overspeed screen is

disabled and not shown on a single window

cluster. For a triple-window cluster, the

overspeed side LCD display is blank. Figure 12C – 221

Instrumentation Page 12C – 64

Page 12C – 64

2 Tech 2 Information

A prerequisite of this diagnostic information is for the user to be familiar with the correct use of Tech 2. The following

pages describe only the major Tech 2 screen displays and provide a brief explanation of their function for diagnosing the

instruments. If additional information is required on the operation of Tech 2, reference should be made to either 0C

Tech 2 or the Tech 2 User’s Guide.

1 Connect Tech 2 to the DLC.

2 Turn the ignition on and press the power button (PWR) on the Tech 2.

3 The Tech 2 will perform a series of self-diagnosing power on self-tests (POST). Once this has been completed

successfully, the Tech 2 Start-up screen will be displayed. Press the Enter key to continue.

The following will then be displayed:

System Identification

Turn the ignition on (as requested) and press Confirm soft key to continue.

The System Identification screen will be displayed detailing the following:

Identifier Code Version

Part number Code Index

Production Date VAP Process Number

Software Version TIS Hardware Key Serial Number

Instrument Type TAG Number

Fuel Calibration Country

Press the Confirm soft key to confirm these details and the Body Menu will be displayed.

Body Menu

This menu provides the Tech 2 user with access to the various functions used to diagnose faults in the instrument cluster

and its related components.

Normal Mode

The instrument normal mode data list is used to view serial data being sent to and from the instrument cluster, refer to

2.1 Normal Mode.

Diagnostic Trouble Codes

In this mode the Diagnostic Trouble Codes can be read and cleared, refer to 2.2 Diagnostic Trouble Codes.

Data Display

In this test mode, Tech 2 displays the status of inputs and outputs of the instrument cluster including the hardwired

inputs, refer to 2.3 Data Display.

Snapshot

In this test mode, the Tech 2 captures data before and after a selected snapshot triggering condition, which may or may

not set a DTC, refer to 2.4 Snapshot.

Miscellaneous Tests

In this test mode, the Tech 2 can test and diagnose faults in the instrument cluster. Warning Indicators and instrument

gauges can be tested in this mode, refer to 2.5 Miscellaneous Tests.

Program

In this mode the following instruments and options can be programmed, fuel gauge, configuration, odometer,

speedometer calibration, reset service interval and reset trip computer settings can be modified, refer to

7.2 Programming.

Instrumentation Page 12C – 65

Page 12C – 65

2.1 Normal Mode

NOTE

If Tech 2 gives the warning Address Error –

Processor Halt, check the software version

loaded into Tech 2 it may require an upgrade.

The Normal Mode data list is used to view serial data being sent to and from the instrument cluster.

On Tech 2 select:

Body / Instrument / Normal Mode.

Normal Mode Data List

Tech 2 Parameter Units Displayed Typical Data Value

Engine Oil Life Reset No / Yes Varies

Transmission Fluid Life No / Yes Varies

SRS Configuration 4 Loop SRS / 6 Loop SRS Varies

Cruise Control Engaged No / Yes Varies

Radio Status Request No / Yes Varies

MFD Message Requested No / Yes Varies

MFD Message Received No / Yes Varies

TPMSS Learn Mode Request Active / Inactive Varies

Instrumentation Page 12C – 66

Page 12C – 66

2.2 Diagnostic Trouble Codes

This function is used to read and clear set DTCs.

On Tech 2 select:

Body / Instrument / Read DTC Information.

Tech 2 Parameter Units Displayed Typical Data Value

Read DTC Information No / Yes Listed DTCs

Clear DTC Information No / Yes Listed DTCs

Instrumentation Page 12C – 67

Page 12C – 67

2.3 Data Display

The Data Display function allows the status of the instrument cluster to be monitored.

On Tech 2 select:

Body / Instrument / Data Display / Instrument.

The Data Display Menu provides access to the serial data lists for:

• The instrument cluster.

• Inputs.

• The trip computer switch.

• System warning details.

• Configuration.

• System Identification.

The list can be scrolled through using the Up and Down arrow keys, Make the required selection from the data display

screen.

Instruments

Tech 2 Parameter Units Displayed Typical Data Value

Battery Voltage Volts 12.0 V

Ignition Switch Off / Acc / On / Start Varies

Park Lamp Switch Input Off / On Varies

Trip Computer Switch Voltage Volts 5.0 V

Trip Switch Status Not In Use / In Use Varies

Vehicle Speed km/h Varies

Engine Speed RPM Varies

Low Fuel Warning Off / On Varies

Very Low Fuel Warning Off / On Varies

Check Powertrain Warning Off / On Varies

Service Vehicle Soon Off / On Varies

High Coolant Temperature Off / On Varies

Low Oil Pressure Warning Off / On Varies

Seat Belt Telltale Off / On Varies

Seat Belt Warning Off / On Varies

SRS Airbag Telltale Off / On Varies

SRS Airbag Warning Off / On Varies

Park Brake and Brake Fail Telltale Off / On Varies

Park Brake and Brake Fail

Warning Off / On Varies

Alternator Telltale Off / On Varies

Alternator Warning Off / On Varies

Low Traction Warning Off / On Varies

Rear Park Lamp Bulb Fail Off / On Varies

Instrumentation Page 12C – 68

Page 12C – 68

Tech 2 Parameter Units Displayed Typical Data Value

Stop Lamp Bulb Fail Off / On Varies

Stop Lamp Fuse Fail Off / On Varies

ABS Telltale Off / On Varies

ABS Warning Off / On Varies

Rest Reminder Off / On Varies

Over Speed Warning Off / On Varies

Cruise Control Enabled Off / On Varies

Traction Control Off / On Varies

Instrument Illumination 0 / 100% Varies

Pointer Illumination Led 0 / 100% Varies

MFD / LCD Illumination Led 0 / 100% Varies

Drivers Seat Belt Unbuckled / Buckled Varies

ESP (Electronic Stability) Failed / Active Varies

Limp Home Mode Inactive / Active Varies

Reduced Performance Off / On Varies

Apply Brake Before Cruise No / Yes Varies

Immobiliser Failed Off / On Varies

Shift Mode Normal / Active Select Varies

Active Select Off / On Varies

Service Due Reminder Off / On Varies

Fuel Level 0 / 100% Varies

Displayed Fuel Level 0 / 100% Varies

Key Priority 1 / 2 Varies

Inputs

The Data Display Inputs function allows the status of the instrument cluster inputs to be monitored.

On Tech 2 select:

Body / Instrument / Data Display / Inputs.

Tech 2 Parameter Units Displayed Typical Data Value

Battery Voltage Volts 12.0 V

Ignition Switch Off / Acc / On / Start Varies

Park Lamp Switch input Off / On Varies

Drivers Seat Belt Unbuckled / Buckled Varies

Low Traction No / Yes Varies

Cruise Control Enabled Off / On Varies

Cruise Control Active I Off / On Varies

ABS Off No / Yes Varies

Check Powertrain Warning Off / On Varies

Service Vehicle Soon Off / On Varies

Instrumentation Page 12C – 69

Page 12C – 69

Tech 2 Parameter Units Displayed Typical Data Value

Alternator Off / On Varies

Low Oil Pressure No / Yes Varies

Rear Park Lamp Bulb Failure Off / On Varies

Stop Lamp Fuse Failure Off / On Varies

Stop Lamp Bulb Failure Off / On Varies

CD Paused Off / On Varies

Mute Active Off / On Varies

Alarm Triggered Off / On Varies

TC / ESP (Traction Control) Off / On Varies

SRS Airbag Off / On Varies

ESP Active (Electronic Stability) No / Yes Varies

ESP Park Brake Active Off / On Varies

ESP Failed (Electronic Stability) No / Yes Varies

Active Select Enabled Off / On Varies

Immobiliser Failed Off / On Varies

Trip Computer Switch Voltage Volts 5.01 V

Trip Switch Status Not In Use / In Use Varies

Transmission Type Manual / Auto Selectable

Vehicle Speed km/h Varies

Engine Speed RPM Varies

Trip Computer

The Data Display Trip Computer function allows the status of the trip computer inputs to be monitored.

On Tech 2 select:

Body / Instrument / Data Display / Trip Computer.

Tech 2 Parameter Units Displayed Typical Data Value

Odometer km Varies

Average Speed km/h Varies

Remaining Fuel Litres Varies

Distance To Arrival km Varies

Time To Arrival Day (s) Varies

Time To Arrival h:m:s Varies

Average Fuel Consumption L / 100km Varies

Instantaneous Fuel Consumption L / 100km Varies

Instantaneous Fuel Consumption L / hour Varies

Stop Watch Day (s) Varies

Stop Watch h:m:s Varies

Distance To Empty km Varies

Trip A Distance km Varies

Instrumentation Page 12C – 70

Page 12C – 70

Tech 2 Parameter Units Displayed Typical Data Value

Trip A Time Day (s) Varies

Trip A Time h:m:s Varies

Fuel Used A Litres Varies

Trip B Distance km Varies

Trip B Time Day (s) Varies

Trip B Time h:m:s Varies

Fuel Used B Litres Varies

Overspeed km / h Varies

Preset 1 Overspeed km / h Varies

Preset 2 Overspeed km / h Varies

Preset 3 Overspeed km / h Varies

Preset 4 Overspeed km / h Varies

Trip Distance Mode A / B Varies

Current Overspeed Preset 1, 2 ,3 or 4 Varies

Overspeed Mode Preset Varies

Current Trip Mode Vehicle Speed Varies

Overspeed Off / On Varies

Configuration

The Data Display Configuration function allows the status of the instrument cluster configuration to be monitored.

On Tech 2 select:

Body / Instrument / Data Display / Configuration.

Tech 2 Parameter Units Displayed Typical Data Value

Speedometer Pulses Pulses Varies

Transmission Type Manual / Auto Varies

Police Mode Disabled / Enabled Varies

SRS Configuration 4 Loop SRS / 6 Loop SRS Varies

First / Next Service km Varies

Service Interval km Varies

Country Location Varies

Instrumentation Page 12C – 71

Page 12C – 71

System Identification

The Data Display System Identification function allows the status of the instrument cluster identification codes to be

monitored.

On Tech 2 select:

Body / Instrument / Data Display / System Identification.

Tech 2 Parameter Units Displayed Typical Data Value

Identifier 1001 Varies

Part Number 92121925 Varies

Production Date Date 220404

Software Version Level 002400

Instrument Type Level Varies

Fuel Calibration 92166016 Varies

Code Version Code 1

Code Index Code 14

VAP Process Number Number 99

TIS Hardware Key Serial Serial Number 0

TAG Number Number 270208

Country Location Varies

Instrumentation Page 12C – 72

Page 12C – 72

2.4 Snapshot

The Tech 2 can be used to record system information that is occurring at a particular moment in time, and this is called a

snapshot. For more details, refer to Section 0C Tech 2.

On Tech 2 select:

Body / Instrument / Snapshot.

The Snapshot Menu provides access to the serial data lists for:

• The instrument cluster.

• The trip computer switch.

Scroll through the Data Display screen using the Up and Down arrow keys. Make the required selection.

NOTE

The snapshot data list is the same as

the instrument cluster data list, refer to

2.3 Data Display.

Instrumentation Page 12C – 73

Page 12C – 73

2.5 Miscellaneous Tests

Miscellaneous Tests allows for the testing of various components of the instrument cluster, such as instrument and

warning indicators, switches and instrument gauges.

1 On Tech 2 select:

Body / Instrument / Miscellaneous Tests.

2 Scroll through the Miscellaneous Tests using the Tech 2 Up and Down arrows.

3 To select the required test function, press the Enter key.

Warnings

Tech 2 can be used to test the following warning functions.

On Tech 2 select:

Body / Instrument / Miscellaneous Tests / Warnings.

Tech 2 Parameter Units Displayed Typical Data Value

Park Brake And Brake Fail Telltale Off / On Varies

Alternator Telltale Off / On Varies

SRS Airbag Fault Off / On Varies

Seat Belt Telltale Off / On Varies

ABS Fault Off / On Varies

Low Traction Off / On Varies

Rear Lamp Bulb Fail Off / On Varies

Rear Brake Bulb Fail Off / On Varies

Rear Lamp Fuse Fail Off / On Varies

Chime

On Tech 2 select:

Body / Instrument / Miscellaneous Tests / Chime.

Pressing the soft keys commands the chime on and off.

Instrumentation Page 12C – 74

Page 12C – 74

2.6 Gauge Control Tests

The Gauge Control Test function provides a means of testing the speedometer, tachometer, engine coolant temperature

gauge and fuel gauge by forcing known values into each gauge to verify their correct operation.

On Tech 2 select:

Body / Instrument / Miscellaneous Tests / Gauge Control Tests.

Tech 2 Parameter Units Displayed Typical Data Value

Speedometer km / h 20 km / h Steps

Tachometer RPM 500 RPM Steps

Temperature Gauge C / H 50% Steps

Fuel Gauge E / F 50% Steps

Speedometer

Commanded vehicle speed can be adjusted up or down in 20 km/h steps from 0 km/h to the maximum value displayed

on the speedometer. Ensure that the speedometer is accurate according to the following table.

On Tech 2 select:

Body / Instrument / Miscellaneous Tests / Gauge Control Tests / Speedometer.

Commanded

Vehicle Speed Speedo

Error Acceptable Readings on

Speedometer

60 km/h –0 / +2 km/h 60 – 62 km/h

100 km/h –0 / +2 km/h 100 – 102 km/h

160 km/h –0 / +3 km/h 160 – 163 km/h

NOTE

In Police Mode the allowable speedometer, error

is ±1 km/h at all speeds.

Tachometer

Commanded engine speed can be adjusted up and down in 500 r.p.m steps with a maximum value of 7000 r.p.m. Ensure

that the tachometer is accurate to ±50 r.p.m between 500 r.p.m and 6500 r.p.m.

On Tech 2 select:

Body / Instrument / Miscellaneous Tests / Gauge Control Tests / Tachometer.

Temperature Gauge

Commanded engine temperature can be adjusted up and down in three steps, these being Cold, Mid and Hot.

On Tech 2 select:

Body / Instrument / Miscellaneous Tests / Gauge Control Tests / Temperature Gauge.

Fuel Gauge

Commanded fuel tank level can be adjusted up and down in three steps, these being Empty, Half and Full.

On Tech 2 select:

Body / Instrument / Miscellaneous Tests / Gauge Control Tests / Fuel Gauge.

Instrumentation Page 12C – 75

Page 12C – 75

2.7 Input Overrides

The following instrument cluster warnings can be commanded on or off using Tech 2.

On Tech 2 select:

Body / Instrument / Miscellaneous Tests / Input overrides.

Tech 2 Parameter Units Displayed Typical Data Value

Vehicle Speed km / h Varies

Engine Speed RPM Varies

Instrument Illumination Down / Up 20% Steps

Park Lamps On Down / Up 50% Steps

Drivers Seat Belt Down / Up 50% Steps

Check Oil Off / On Varies

Shift Mode Off / On Varies

Service Vehicle Soon Off / On Varies

Check Powertrain Off / On Varies

Check Alternator Off / On Varies

Immobiliser Failed Off / On Varies

Apply Brake Before Cruise Off / On Varies

Reduce Performance Off / On Varies

SRS Airbag Off / On Varies

Mute Off / On Varies

CD Paused Off / On Varies

ESP Assistance Off / On Varies

ESP Failed (Electronic Stability

Program) Off / On Varies

Cruise Control Enabled Off / On Varies

Cruise Control Active Off / On Varies

Instrumentation Page 12C – 76

Page 12C – 76

2.8 Illumination

The illumination function provides a means of testing the illumination level of the MFD, LCD's, as well as the instrument

cluster pointers and dials. The illumination level can be adjusted in increments of 20%, from 0% to 100%.

On Tech 2 select:

Body / Instrument / Miscellaneous Tests / Illumination.

Tech 2 Parameter Units Displayed Typical Data Value

MFD / LCD Down / Up 20% Steps

Pointers Down / Up 20% Steps

Dials Down / Up 20% Steps

MFD / LCD

Use the Up and Down arrow keys to scroll through the Miscellaneous Tests list and highlight Illumination.

Use the Up and Down soft keys on the Tech 2 to increase and decrease the illumination level and verify that the MFD /

LCD illumination level changes accordingly.

Pointers

Use the Up and Down soft keys on the Tech 2 to increase and decrease the illumination level and verify that the

illumination level of the pointers changes accordingly.

Dials

Use the Up and Down soft keys on the Tech 2 to increase and decrease the illumination level and verify that the

illumination level of the dials changes accordingly.

Instrumentation Page 12C – 77

Page 12C – 77

2.9 Self Test – All Functions On

The Self Test function provides a means of testing the correct operation of the instrument cluster.

On Tech 2 select:

Body / Instrument / Miscellaneous Tests / Self Test.

1 Once the test function has been highlighted and selected, the Tech 2 will display the current serial data at the top of

the screen and three soft keys at the bottom of the screen.

2 Use the on and off soft keys on Tech 2 to enable and disable the self test.

When activated, the following occurs for approximately 5 seconds:

• The temperature gauge and the fuel gauge are set to the half-way mark (50%).

• The tachometer is set to 3000 r.p.m.

• The speedometer is set to 100 km/h.

• The chime is activated at 1 kHz.

• The indicators that are driven either by the internal microprocessor or from the serial data line are illuminated.

These are SRS, ABS, Security, Brake Park/Fail, Alternator Fail and Seat Belt. All segments of the MFD and

the side LCD’s (triple-window cluster only) are illuminated, refer to Figure 12C – 222.

3 Press the Quit soft key or the Exit key to exit the test and return to the previous screen.

Figure 12C – 222

Test Display

1 Press the ON soft key on the Tech 2 to enable the

self-test. When activated, the MFD display is as

shown.

2 Press the Quit soft key or the Exit key to exit the test

and return to the previous screen.

Figure 12C – 223

Instrumentation Page 12C – 78

Page 12C – 78

2.10 MFD Test

The MFD Test function provides a means of commanding all segments within the MFD display to be shown.

On Tech 2 select:

Body / Instrument / Miscellaneous Tests / MFD Test.

1 Once the test function has been highlighted and selected, the Tech 2 will display the current serial data at the top of

the screen and three soft keys at the bottom of the screen.

2 Use the On and Off soft keys on Tech 2 to enable and disable the MFD test.

3 Press the Quit soft key or the Exit key to exit the test and return to the previous screen.

The MFD display will be the same as for self test, refer to 2.9 Self Test – All Functions On.

LCD Tests

The LCD Tests function provides a means of testing the correct operation of the side LCD's (triple-window cluster only)

by using the Tech 2 to force known values into the LCD displays in type two, three and four, instrument clusters.

On Tech 2 select:

Body / Instrument / Miscellaneous Tests / LCD Tests.

Test Display

1 Using Tech 2 select the LCD test. When activated, the

LCD displays should be as shown in Figure 12C – 224.

2 Press the Quit soft key or the Exit key to exit the test

and return to the previous screen.

Figure 12C – 224

Instrumentation Page 12C – 79

Page 12C – 79

2.11 Program

Fuel Gauge Calibration

This function is used to program the fuel gauge to the fuel tank and sender unit type.

On Tech 2 select:

Body / Instrument / Miscellaneous Tests / Program.

Tech 2 Parameter Units Displayed Typical Data Value

Code Index Code 14

Code Version Version 1

Fuel Calibration Number 92166016

Configuration

On Tech 2 select:

Body / Instrument / Miscellaneous Tests / Configuration.

To view the instrument cluster configuration, refer to 2.3 Data Display

Odometer

This function is for changing the odometer reading back to zero, providing the vehicle has travelled no more than 100 km

also TIS approval must be obtained to perform this function.

On Tech 2 select:

Body / Instrument / Miscellaneous Tests / Odometer

and follow the instructions on Tech 2.

Speedometer calibration

This function is used to change the speedometer accuracy, this function is only enabled when police mode has been

selected.

On Tech 2 select:

Body / Instrument / Miscellaneous Tests / Speedometer Calibration

and follow the instructions on Tech 2.

Reset Service Interval

This function is used to reset the scheduled service interval of the vehicle.

On Tech 2 select:

Body / Instrument / Miscellaneous Tests / Reset Service Interval

and follow the instructions on Tech 2.

Reset Trip Computer Settings

This function is used to reset to zero all stored values in the trip computer memory.

On Tech 2 select:

Body / Instrument / Miscellaneous Tests / Reset Trip Computer Settings

and follow the instructions on Tech 2.

Instrumentation Page 12C – 80

Page 12C – 80

3 Wiring Diagrams and

Connectors

3.1 Wiring Diagrams – V6

Figure 12C – 225

Instrumentation Page 12C – 81

Page 12C – 81

Figure 12C – 226

Instrumentation Page 12C – 82

Page 12C – 82

Figure 22C – 227

Instrumentation Page 12C – 83

Page 12C – 83

3.2 Wiring Diagrams – V8

Figure 12C – 228

Instrumentation Page 12C – 84

Page 12C – 84

Figure 12C – 229

Instrumentation Page 12C – 85

Page 12C – 85

Figure 12C – 230

Instrumentation Page 12C – 86

Page 12C – 86

3.3 Connector Chart – V6

Figure 12C – 231

Instrumentation Page 12C – 87

Page 12C – 87

Figure 12C – 232

Instrumentation Page 12C – 88

Page 12C – 88

3.4 Connector Chart – V8

Figure 12C – 233

Instrumentation Page 12C – 89

Page 12C – 89

Figure 12C – 234

Instrumentation Page 12C – 90

Page 12C – 90

3.5 Instrument Cluster Inputs

P3 Connector Pin Locations

Figure 12C – 235 Identifies the pin locations on the

instrument cluster’s P3 connector.

Figure 12C – 235

The following table provides details on the instrument cluster connector and signal functions.

Pin Number Function Pin Number Function

X1-1 Battery X1-17 Ground

X1-2 UART Serial Data X1-18 Trip Computer Switch Lo

X1-3 Door Ajar X1-19 Park Lamps

X1-4 Front Fog Lamps X1-20 Ignition

X1-5 Spare X1-21 Spare

X1-6 Right Turn Indicator X1-22 Spare

X1-7 High Beam X1-23 Spare

X1-8 Left Turn Indicator X1-24 Spare

X1-9 Security Warning X1-25 Spare

X1-10 Seat Belt Switch X1-26 Spare

X1-11 Spare X1-27 Spare

X1-12 Spare X1-28 Spare

X1-13 Spare X1-29 Speedometer

X1-14 Spare X1-30 Tachometer

X1-15 Brake X1-31 Trip Computer Switch Hi

X1-16 Spare X1-32 Spare

Instrumentation Page 12C – 91

Page 12C – 91

S237 Connector Pin Locations

Connector Details

Pin Number Function

X1–1 Enabled Switch

X1–2 Not Connected

X1–3 Illumination Positive

X1–4 Not Connected

X1–5 Ground

X1–6 Not Connected

X1–7 Illumination Ground

X1–8 Not Connected Figure 12C – 236

Instrumentation Page 12C – 92

Page 12C – 92

4 Diagnostics

The diagnostic system check is a preliminary procedure that checks to ensure the instrument cluster is communicating on

the serial data bus as well as helping identify any internal or external problem.

Fault diagnosis for the instrument cluster is divided into two areas; faults which can be remedied by checking the

operation of components connected to the instrument cluster and those which can be checked by using Tech 2.

The instrument cluster can provide a preliminary indication that there is a fault either on the serial data bus, within the

instrument cluster or the BCM. When the instrument cluster does not receive a valid or complete serial data message for

10 seconds, the MFD shows the message 'Service Error – Contact Dealer'. This error message indicates a short circuit

on the serial data bus, an open circuit to the instrument cluster or a fault within the instrument cluster. Pressing the

MODE button on the trip computer switch clears the error message. In this instance, the icon ⌧ is shown in the left-hand

side of the MFD. If the fault is associated with the fuel sender, the message displayed is 'Fuel Sender Error – Contact

Dealer', and the symbol is displayed on the left-hand side of the MFD.

Additionally, when a fault is detected, the instrument cluster sets a Diagnostic Trouble Code (DTC) that represents that

particular problem or failure.

The following tables are designed to provide fast and efficient fault location of the instrument cluster. Each diagnostic

reference consists of a diagnostic table and pertinent information including Diagnostic Trouble Code (DTC) setting

parameters and, in most tables, reference to circuit diagrams.

When carrying out wiring checks as directed by the diagnostic tables, rather than probe terminals and connectors with

incorrect sized multimeter connections, use the adaptors contained in connector test adaptor kit J35616-C (KM-609), as

shown in the following illustration. This will prevent any possibility of spreading or damaging wiring harness terminals,

which may later cause a system intermittent failure.

Figure 12C – 237

4.1 Diagnostic System Check

Circuit Description

When investigating any complaint of an instrument cluster problem or malfunction, always begin diagnosis with the

following Diagnostic System Check. This check is a preliminary procedure that ensures that the instrument cluster is

powered up, communicating on the serial data line, helping to identify a problem or malfunction, and directing the

technician to the appropriate diagnostic table.

With Tech 2 connected to the DLC and the ignition switched on, Tech 2 should display serial data communication. If

Tech 2 does not display serial data, the serial data circuit may be open or shorted.

The entertainment system and several other control modules are connected to the serial data line. The control modules

are the ECM, PCM, PIM, BCM, ABS or ABS / TCS, OCC and SRS. The entertainment system or any one of the control

modules could cause a fault on the serial data line. This fault could result in Tech 2 not being able to display serial data.

Instrumentation Page 12C – 93

Page 12C – 93

Test Description

3-4 Checks the operation of the indicators.

5 Checks the relevant fuses.

6-8 Checks the wiring harness serviceability.

9-10 Using Tech 2 to check for and clear set DTCs.

Diagnostic Aids

• By manipulating the harnesses at the various connectors, it is often possible to isolate the cause of the circuit

interruption. This harness can then be removed and repaired.

• Check for any damage to the harness, which could cause an intermittent open or short to ground or backed out

terminals at the instrument cluster connector, broken connector locks, improperly formed or damaged terminals.

• For wiring diagrams and connector charts, refer to 3 Wiring Diagrams and Connectors.

Diagnostic System Check Diagnostic Table

Step Action Yes No

1 Is this fault isolated to the system / component

Go to step 2

Refer to Section

OD Vehicle

Diagnostics

2 Has the Instrument Cluster Self Diagnostic test been performed?

NOTE

Annotate any functions of the instrument cluster that do

not work as part of the test. Go to step 3

Perform the test,

refer to 4.2

Instrument Cluster

Self Diagnostics

3 Turn the ignition on.

Do the instrument cluster warning indicators illuminate? Go to Step 9 Go to Step 4

4 Do any instrument cluster warning indicators remain illuminated after

5 seconds? Go to step 10 Go to step 5

5 Check the instrument cluster fuses F13 and F21 in instrument panel

compartment.

Are the fuses blown? Replace blown

fuses Go to Step 6

6 1 Remove the instrument cluster, refer to Section 1A3 Instrument

Panel and Console.

2 Using a multimeter set to measure voltage, probe between

connector P3 – X1 pin 1 and a known ground.

Does the multimeter indicate battery voltage? Go to Step 7 Repair or replace

circuit 1340

7 1 Turn the ignition on.

2 Using a multimeter set to measure voltage, probe between

connector P3 – X1 pin 20 and a known ground.

Does the multimeter indicate battery voltage? Go to Step 8 Repair or replace

circuit 539

8 Using a multimeter set to measure resistance, probe between

connector P3 – X1 pin 17, and a known ground.

Does the multimeter indicate continuity?

Replace the

Instrument Cluster,

refer to Section 1A3

Instrument Panel

and Console Repair or replace

circuit 251

Instrumentation Page 12C – 94

Page 12C – 94

Step Action Yes No

9 1 Connect Tech 2 to the DLC.

2 On Tech 2 select:

Diagnostic Trouble Codes / Clear DTC Information.

3 Cycle the ignition off to on.

4 On Tech 2 select:

Diagnostic Trouble Codes / Read DTC Information.

Has DTC 14 set?

Refer to 5.11 DTC

14 – No Serial

Communication

Data Go to Step 10

10 Are any other DTCs set? Refer to 5.1

Diagnostic Trouble

Code List

Refer to 6

Diagnostics For

Non DTC Faults

When all diagnosis and repairs are completed, clear all DTCs and check the system for correct operation.

Instrumentation Page 12C – 95

Page 12C – 95

4.2 Instrument Cluster Self Diagnostics

Self Diagnostic Mode Operation

To enter the Instrument Cluster Self Diagnostic Mode, press the trip computer switch MODE and SET buttons

simultaneously while turning the ignition on. Further pressing the MODE button for less than 2 seconds will step through

the various instrument cluster information displays, which appear on the MFD. The vehicle may be driven while in

Diagnostic Mode.

To exit the Instrument Cluster Diagnostic Mode press the trip computer switch SET button for less than 2 seconds, or

switch the ignition off.

In sequence, the Instrument Cluster Diagnostic Mode screens are as follows:

Software Version

This screen provides details of the instrument cluster

software version.

Press the MODE button to continue.

Figure 12C – 238

GM Part Number

This screen provides details of the instrument cluster part

number.

Press the MODE button to continue.

Figure 12C – 239

Trip Computer Switch Voltage

This screen provides an indication of the operational status

of the trip computer switch.

NOTE

• When checking the MODE button voltage,

press and hold the button for more than 2

seconds otherwise the Diagnostic Mode will

advance to the Battery Voltage screen.

• When checking the SET button voltage,

press and hold the button for more than

2 seconds otherwise the system will exit the

Diagnostic Mode.

Press each button and the following nominal voltages should

be indicated:

MODE button – 3.9 – 4.28 V

SET button – 4.28 – 4.75 V

UP button – 3.26 – 3.55 V

DOWN button – 2.43 – 2.71 V

Press the MODE button to continue.

Figure 12C – 240

Instrumentation Page 12C – 96

Page 12C – 96

Battery Voltage

This screen provides an indication of the current battery

voltage if the display shows less than 11 Voltage charge the

vehicles battery before proceeding.

Press the MODE button to continue.

Figure 12C – 241

Fuel Calibration Part Number

When an instrument cluster is replaced, the fuel calibration

part number is to be entered using Tech 2, refer to

7.2 Programming.

This identifies the fuel tank size and fuel sender

specifications.

Press the MODE button to continue.

Figure 12C – 242

Fuel Tank level

The fuel level provided by the ECM (V6) or PCM (V8) This

value should increase as the tank is filled and decrease as

the tank is emptied.

0 indicates the fuel tank is empty while 255 indicates the fuel

tank is full.

Press the MODE button to continue.

Figure 12C – 243

Instrument Cluster Temperature

This is the ambient temperature of the instrument cluster

measured at the display.

If the temperature reading is much higher than the ambient

temperature, this indicates an internal problem with the

instrument cluster and it should be replaced.

Press the MODE button to continue.

Figure 12C – 244

ADC Brake Reading

The braking system uses a variable resistance network to

determine if the brake system is faulty.

This shows the current reading that the instrument cluster

has made of the resistor network, and is shown in Volts. The

standard operating value is from 0.800 to 2.800 V if the

reading is outside this range, refer to Section 5B ABS for

further diagnosis.

Figure 12C – 245

Instrumentation Page 12C – 97

Page 12C – 97

Passenger Seat Voltage Differential

This monitor is not fitted to vehicles but the display screens

are present on the cluster.

If the reading is anything but 0, it is an indication of a

harness problem or a hardware fault within the instrument

cluster.

Figure 12C – 246

Rear Seat Voltage Differential

This monitor is not fitted to vehicles but the display screens

are present on the cluster.

If the reading is anything but 0, it is an indication of a

harness problem or a hardware fault within the instrument

cluster.

Figure 12C – 247

Rear Seat 2 Voltage Differential

This monitor is not fitted to vehicles but the display screens

are present on the cluster.

If the reading is anything but 0, it is an indication of a

harness problem or a hardware fault within the instrument

cluster.

Figure 12C – 248

Rear Seat 3 Voltage Differential

This monitor is not fitted to vehicles but the display screens

are present on the cluster.

If the reading is anything but 0, it is an indication of a

harness problem or a hardware fault within the instrument

cluster.

Figure 12C – 249

Remaining Fuel

This screen provides an estimate of the fuel remaining in the

fuel tank to the nearest 5 litres.

Press the MODE button to continue.

Figure 12C – 250

Instrumentation Page 12C – 98

Page 12C – 98

Instantaneous Fuel

This screen provides details of the last instantaneous fuel

reading stored in the instrument cluster.

Press the MODE button to continue.

Figure 12C – 251

Coolant Temperatu re

This screen provides an indication of the current coolant

temperature within the engine.

For further information refer to:

• Section 6B1 Engine Cooling – V6.

• Section 6B3 Engine Cooling – V8.

Press the MODE button to continue. Figure 12C – 252

Speed

This screen provides an indication of the current vehicle

speed; this can be compared with the analogue

speedometer readout as a cross-reference.

Press the MODE button to continue.

Figure 12C – 253

Tacho

This screen provides an indication of the current engine

speed in r.p.m. this can be compared with the analogue

tachometer readout as a cross-reference.

Press the MODE button to continue.

Figure 12C – 254

Park Lamps On / Off

The park lamps circuit provides illumination for the

instrument cluster. If the park lamps are shown as ON, the

instrument cluster should also be illuminated.

Press the MODE button to continue.

Figure 12C – 255

Instrumentation Page 12C – 99

Page 12C – 99

Odometer Status

This screen shows how many kilometres have been logged

on the vehicles odometer since the date of manufacture.

Figure 12C – 256 shows the vehicle has travelled 33

kilometres and is waiting for the next time the vehicle is

driven to add more kilometres to the reading.

Press the MODE button to continue.

Figure 12C – 256

Trouble Codes

To access the trouble code display hold the MODE and SET

buttons down while turning the ignition to the ON position

then use the MODE button to step to the Trouble Codes

display.

The Trouble Codes screen displays two rows of 16 digits

each. If no DTC is set, the 32 digits are all zeros (0).

However, if a DTC is set it is represented by the numeral

one (1) in the appropriate position in the rows.

The following table shows the location of each DTC

identifying digit. To determine the actual DTC number that

has been set, count the digits from the bottom right-hand

side, starting at zero. In the example shown in Figure 12C –

257, DTC 9 and DTC 21 have been set.

Press the MODE button to continue.

Refer to 5 Diagnostic Trouble Codes.

Figure 12C – 257

DTC Trouble Code Locations

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0

NOTE

Use Tech 2 to access and reset any set DTCs.

Instrumentation Page 12C – 100

Page 12C – 100

Full Test

The Instrument Cluster Self Diagnostic Mode also has a self-test function (full test) to verify correct instrument cluster

operation.

When activated the following occurs:

• The temperature gauge and the fuel gauge are set to the half-way mark (50%).

• The tachometer is set to 3000 r.p.m.

• The speedometer is set to 100 km/h.

• The chime is activated at 1 kHz.

• The indicator LED’s that are driven by either the internal microprocessor or from the serial data bus are illuminated.

These are SRS, Brake Park/Fail, Seat Belt, Security, ABS, Alternator Fail, and Fog lamps (if fitted).

All segments of the MFD and the side trip computer displays (triple-window cluster only) are illuminated.

FIGURE 12C – 258 NOTE

If any segments of the displays are missing

during the full test mode, the instrument cluster

must to be replaced.

Press the MODE button to return to the GM Part Number screen, or the SET button to exit the instrument cluster

diagnostic mode.

Instrumentation Page 12C – 101

Page 12C – 101

5 Diagnostic Tr ouble Codes

General Information

There are two types of DTC, current and history.

A Current DTC is active only for the period that the fault is present and is indicated by the icon/message on the

instrument cluster. When the fault is cleared, the Current DTC and the icon / message are also cleared.

The History DTC is set at the same time as the Current DTC, and is stored in memory within the instrument cluster to

provide information on vehicle system operation over a period of time. History DTC are read and cleared from memory by

Tech 2.

Each DTC presented on the instrument cluster screen is allocated a number from 0 to 31. The following table provides

details on each of these DTCs.

5.1 Diagnostic Trouble Code List

The engine controller for V6 is the ECM and for the V8 the PCM.

DTC No DTC Source Description Diagnostic Table

0 Not Used

1 Not Used

2 Not Used

3 ECM / PCM Fuel type mismatch Vehicle is configured as

LPG but the ECM is

reporting a petrol vehicle

4 ECM / PCM Auto transmission

mismatch The cluster is configured

as 4/5 speed manual but

the PCM / ECM reports the

opposite. Refer to 7.2

Programming

5 ECM / PCM Fuel invalid flag set F uel invalid flag in the PCM

poll response cleared

6 TPMS

Only for high level vehicles No TPMS poll response

detected for 10 seconds Refer to Section 10 Wheels

and Tyres

7 ESP No ESP poll response

detected for 10 seconds 5.3 DTC 7 – No Serial

Data from ABS / TCS /

ESP – V6

8 ABS No ABS poll response

detected for 10 seconds 5.4 DTC 8 – No Serial

Data from ABS / TCS

9 BCM No BCM broadcast

detected for 10 seconds 5.5 DTC 9 – No Serial

Data from BCM

10 OCC No OCC poll response

detected for 10 seconds 5.6 DTC 10 – No Serial

Data from OCC

11 ECM / PCM No PCM / ECM poll

response detected for 10

seconds

5.7 DTC 11 – No Serial

Data from ECM – V6

5.8 DTC 11 – No Serial

Data from PCM – V8

12 SDM No SDM poll response

detected for 10 seconds 5.9 DTC 12 – No Serial

Data from SDM

13 Instrument No instrument poll from

BCM detected for 10

seconds

5.10 DTC 13 – No

Instrument Poll from BCM

Instrumentation Page 12C – 102

Page 12C – 102

DTC No DTC Source Description Diagnostic Table

14 Serial communications No Serial communications

detected for 10 seconds 5.11 DTC 14 – No Serial

Communication Data

15 Radio No radio poll response

detected for 10 seconds 5.12 DTC 15 – No Serial

Data from Audio System

16 Fuel ECM / PCM Loss of ECM poll response

data or fuel level data at 0

or 255 for more than 10

seconds

5.13 DTC 16 – Fuel Level

System

17 Not Used

Not Used

Passenger seat N/A N/A

19 SDM Incorrect SDM module poll

response detected 5.14 DTC 19 – Incorrect

SDM Detected

20 Reserved

21 Trip switch Trip switch voltage below

normal operating range 5.15 DTC 21 or 22 – Trip

Switch Faulty

22 Trip switch Trip switch button or

buttons pressed for at least

one minute

5.15 DTC 21 or 22 – Trip

Switch Faulty

23 Reserved

24 EEPROM Incorrect EEPROM

checksum calculated after

a battery reset

5.16 DTC 24 – EEPROM

Checksum Failure

25 ROM Incorrect ROM checksum

calculated after a battery

reset

Not cleared

26 Reserved

27 Reserved

28 Reserved

29 Reserved

30 Reserved

31 Reserved

Instrumentation Page 12C – 103

Page 12C – 103

5.2 DTC 6 – No Serial Data from TPMS

Circuit Description

For information on the Tyre Pressure Monitoring System, refer to Section 10 Wheels and Tyres.

Instrumentation Page 12C – 105

Page 12C – 105

5.3 DTC 7 – No Serial Data from ABS / TCS /

ESP – V6

Circuit Description

The ABS (or ABS / TCS / ESP) module sends serial data along the GM LAN data bus, circuits 2500 and 2501 to the

PIM, which converts the data to UART protocol. It is then sent to the BCM via the primary UART bus (circuit 800) then to

the instrument cluster via the secondary UART bus (circuit1061) to indicate the status of the traction control. If traction

control has been disabled by the ABS / TCS / ESP module, the Traction Control Off warning will appear on the

instrument cluster MFD.

DTC 8 will set if there is no ABS data message on the bus for more than 10 seconds. In practice, the trouble code is set

somewhere between 10 and 20 seconds after the instrument cluster receives the last ABS data message. The DTC is

reset within 10 seconds of the arrival of an ABS data message on the bus. The DTC is logged as a History DTC.

Refer to 3 Wiring Diagrams and Connectors to aid in diagnosis.

Test Description

The following numbers refer to the step numbers in the diagnostic table:

2-3 Checks the ABS/TCS/ESP module using Tech 2.

4-6 Checks the condition of the data bus from the ABS module to the instrument cluster.

Diagnostic Table Notes

1 If the fault cannot be found in the harness then the fault may lie in the ABS, PIM or the BCM module, refer to the

diagnostic tables in:

• Section 6E1 Powertrain Interface Module – V6.

• Section 12J Body Control Module.

2 For Tech 2 information, refer to 2 Tech 2 Information.

DTC 7 Diagnostic Table

Step Action Yes No

1 Has the diagnostic system check been performed?

Go to step 2

Refer to

4.1 Diagnostic

System Check

2 1 Connect Tech 2 to the DLC.

2 On Tech 2 select:

Chassis / ABS/ECT/ESP.

Does Tech 2 display the ABS/TCS Identification information (i.e. Part

Number / Production Date)? Go to step 3

Refer to Section

5B1 ABS – V6 for

further diagnosis.

3 On Tech 2 select:

Vehicle / Module ECU presence check.

Does Tech 2 list the BCM, PIM and ABS as being present? Go to step 4 Refer to Note 1

4 Using a multimeter set to measure resistance, probe between

connector P3 – X1 pin 2 and a known ground.

Does the multimeter indicate continuity?

Repair or replace

circuit 1061 Go to step 5

5 Using a multimeter set to measure resistance, probe between

connector P3 – X1 pin 2 to battery voltage.

Does the multimeter indicate continuity? Repair or replace

circuit 1061 Go to step 6

Instrumentation Page 12C – 105

Page 12C – 105

Step Action Yes No

6 Using a multimeter set to measure resistance, probe between

connectors P3 – X1 pin 2 to A15 – X2 pin 9.

Does the multimeter indicate continuity? Go to step 7 Repair or replace

circuit 1061

7 1 Connect Tech 2 to the DLC.

2 On Tech 2 select:

Diagnostic Trouble Codes / Clear DTC Information.

3 Cycle the ignition off to on.

4 On Tech 2 select:

Diagnostic Trouble Codes / Read DTC Information.

Has DTC 7 set? Go to step 2 Go to Step 8

8 Are any other DTCs set? Refer to 5.1

Diagnostic Trouble

Code List System

serviceable

When all diagnosis and repairs are completed, clear all DTCs and check the system for correct operation.

Instrumentation Page 12C – 107

Page 12C – 107

5.4 DTC 8 – No Serial Data from ABS / TCS –

Circuit Description

The ABS (or ABS / TCS) module sends serial data along the secondary serial data bus, (circuit 1061) to the instrument

cluster to indicate the status of the traction control, If traction control has been disabled by the ABS / TCS module, the

Traction Control Off warning will appear on the instrument cluster MFD.

DTC 8 will set if there is no ABS data message on the bus for more than 10 seconds. In practice, the trouble code is set

somewhere between 10 and 20 seconds after the instrument cluster receives the last ABS data message. The DTC is

reset within 10 seconds of the arrival of an ABS data message on the bus. The DTC is logged as a History DTC.

NOTE

The Tech 2 recognises the ABS / TCS Module as

ABS / ETC.

Refer to 3 Wiring Diagrams and Connectors to aid in diagnosis.

Test Description

The following numbers refer to the step numbers in the diagnostic table:

2 Checks the ABS/TCS module with Tech 2.

3-6 Checks the condition of the relevant wiring harnesses with a multimeter.

Diagnostic Table Notes

1 If the fault cannot be found in the harness then the fault may lie in the ABS module or the BCM, refer to the

diagnostic tables in:

• Section 12J Body Control Module.

2 For Tech 2 information, refer to 2 Tech 2 Information.

DTC 8 Diagnostic Table

Step Action Yes No

1 Has the diagnostic system check been performed?

Go to Step 2

Refer to

4.1 Diagnostic

System Check

2 1 Connect Tech 2 to the DLC.

2 On Tech 2 select:

Chassis / ABS/ETC.

Does Tech 2 display the ABS/TCS Identification information (i.e. Part

Number / Production Date)? Go to Step 3 Refer to Note 1

3 1 Remove the instrument cluster, refer to1A3 Instrument Panel

and Console.

2 Using a multimeter set to measure resistance, probe between

connectors A37 – X1 pin 11 and A15 – X2 pin 9.

Does the multimeter indicate continuity? Go to step 4

Repair or replace

circuit 1061

4 Using a multimeter set to measure resistance, probe between

connector P3 – X1 pin 2 and a known ground.

Does the multimeter indicate continuity?

Repair or replace

circuit 1061 Go to Step 5

Instrumentation Page 12C – 107

Page 12C – 107

Step Action Yes No

5 Using a multimeter set to measure resistance, probe between

connector P3 – X1 pin 2 and battery voltage.

Does the multimeter indicate continuity? Repair or replace

circuit 1061 Go to step 6

6 Using a multimeter set to measure resistance, probe between

connectors P3 – X1 pin 2 and A37 – X1 pin 11.

Does the multimeter indicate continuity? Go to step 7 Repair or replace

circuit 1061

7 1 Connect Tech 2 to the DLC.

2 On Tech 2 select:

Diagnostic Trouble Codes / Clear DTC Information.

3 Cycle the ignition off to on.

4 On Tech 2 select:

Diagnostic Trouble Codes / Read DTC Information.

Has DTC 8 set? Go to step 2 Go to Step 8

8 Are any other DTCs set? Refer to 5.1

Diagnostic Trouble

Code List System

serviceable

When all diagnosis and repairs are completed, clear all DTCs and check the system for correct operation.

Instrumentation Page 12C – 108

Page 12C – 108

5.5 DTC 9 – No Serial Data from BCM

Circuit Description

The BCM sends serial data along the secondary serial data bus (circuit 1061); the status of the various modules on the

serial data line is monitored by the instrument cluster.

DTC 9 will set if there is no BCM data message on the bus for more than 10 seconds. In practice, the trouble code is set

somewhere between 10 and 20 seconds after the instrument cluster receives the last BCM data message. The DTC is

reset within 10 seconds of the arrival of a BCM data message on the bus. The DTC is logged as a History DTC.

Refer to 3 Wiring Diagrams and Connectors to aid in diagnosis.

Test Description

The following numbers refer to the step numbers in the diagnostic table:

2 Checks if the BCM is functioning using Tech 2.

3-5 Checks the condition of the wiring harness from the BCM to the instrument cluster.

6 Checks DTCs using Tech 2.

Diagnostic Table Notes

1 Refer to Section 12J Body Control Module for further diagnosis.

2 For Tech 2 information, refer to 2 Tech 2 Information.

DTC 9 Diagnostic Table

Step Action Yes No

1 Was the Diagnostic System Check performed?

Go to Step 2

Refer to

4.1 Diagnostic

System Check

2 1 Connect Tech 2 to the DLC.

2 On Tech 2 select:

Body / Body Control Module.

3 Press the Confirm soft key.

Does Tech 2 display the BCM Identification information (i.e. Part

Number / Production Date)? Go to Step 3

Refer to Section

12J Body Control

Module for further

diagnosis

3 1 Turn the ignition off.

2 Remove the instrument cluster refer to Section 1A3 Instrument

Panel and Console.

3 Gain access to the BCM, refer to Note 1.

4 Disconnect BCM A15 – X2.

5 Using a multimeter set to measure resistance, probe between

connectors A15 – X2 pin 9 and P3 – X1 pin 2.

Does the multimeter indicate continuity? Go to Step 4 Repair or replace

circuit 1061

4 Using a multimeter set to measure resistance, probe between

connector P3 – X1 pin 2 and a known ground.

Does the multimeter indicate continuity? Repair or replace

circuit 1061 Go to Step 5

5 Using a multimeter set to measure resistance, probe between

connector P3 – X1 pin 2 and battery voltage.

Does the multimeter indicate continuity? Repair or replace

circuit 1061 Go to Step 6

Instrumentation Page 12C – 109

Page 12C – 109

Step Action Yes No

6 1 Connect Tech 2 to the DLC.

2 On Tech 2 select:

Diagnostic Trouble Codes / Clear DTC Information.

3 Cycle the ignition off to on.

4 On Tech 2 select:

Diagnostic Trouble Codes / Read DTC Information.

Has DTC 9 set? Go to step 2 Go to Step 7

7 Are any other DTCs set? Refer to 5.1

Diagnostic Trouble

Code List System

serviceable

When all diagnosis and repairs are completed, clear all DTCs and check the system for correct operation.

Instrumentation Page 12C – 110

Page 12C – 110

5.6 DTC 10 – No Serial Data from OCC

Circuit Description

The OCC module sends serial data to the instrument cluster along the secondary serial data bus, circuit 1061.

DTC 10 will set if there is no OCC data message on the bus for more than 10 seconds. In practice, the trouble code is set

somewhere between 10 and 20 seconds after the instrument cluster receives the last OCC data message. T he DTC is

reset within 10 seconds of the arrival of an OCC data message on the bus. The DTC is logged as a History DTC.

NOTE

This DTC will not set on vehicles with a manual

HVAC unit.

Refer to 3 Wiring Diagrams and Connectors to aid in diagnosis.

Test Description

The following numbers refer to the step numbers in the diagnostic table:

2 Checks the status of the OCC using Tech 2.

3-5 Checks the condition of the wiring harness from the OCC module to the instrument cluster.

6-7 Checks DTCs using Tech 2.

Diagnostic Table Notes

1 If the fault cannot be found in the harness then the fault may lie in the OCC module or the BCM, refer to Section 2F HVAC

Occupant Climate Control (Auto A/C) – Removal & Install or Section 12J Body Control Module for further diagnosis.

2 For Tech 2 information, refer to 2 Tech 2 Information.

DTC 10 Diagnostic Table

Step Action Yes No

1 Was the Diagnostic System Check performed?

Go to Step 2

Refer to

4.1 Diagnostic

System Check

2 1 Connect Tech 2 to the DLC.

2 On Tech 2 select:

Body / Occupant Climate Control.

3 Press the Confirm soft key.

Does Tech 2 display the OCC Identification information (i.e. Part

Number / Production Date)? Go to Step 3

Refer to Section

2F, HVAC

Occupant Climate

Control (Auto

A/C) – Removal &

Installation

3 1 Turn the ignition off.

2 Remove the instrument cluster; refer to Section 1A3 Instrument

Panel and Console.

3 Disconnect the OCC module A14 – X1 refer to, Section 2C

HVAC Climate Control (Auto A/C) Removal and Installation.

Using a multimeter set to measure resistance, probe between

connectors A14 – X1 pin 6 and P3 – X1 pin 2.

Does the multimeter indicate continuity? Go to Step 4 Repair or replace

circuit 1061

4 Using a multimeter set to measure resistance, probe between

connector P3 – X1 pin 2 and a known ground.

Does the multimeter indicate continuity? Repair or replace

circuit 1061 Go to Step 5

Instrumentation Page 12C – 111

Page 12C – 111

Step Action Yes No

5 Using a multimeter set to measure resistance, probe between

connector P3 – X1 pin 2 and battery voltage.

Does the multimeter indicate continuity? Repair or replace

circuit 1061 Go to Step 6

6 On Tech 2 select:

Diagnostic Trouble Codes / Clear DTC Information.

Has the DTC 10 set? Refer to Note 1 Go to Step 7

7 1 Connect Tech 2 to the DLC.

2 On Tech 2 select:

Diagnostic Trouble Codes / Clear DTC Information.

3 Cycle the ignition off to on.

4 On Tech 2 select:

Diagnostic Trouble Codes / Read DTC Information.

Has DTC 10 set? Go to step 2 Go to Step 8

8 Are any other DTCs set? Refer to 5.1

Diagnostic Trouble

Code List System

serviceable

When all diagnosis and repairs are completed, clear all DTC and check the system for correct operation.

Instrumentation Page 12C – 112

Page 12C – 112

5.7 DTC 11 – No Serial Data from ECM – V6

Circuit Description

The V6 engine uses an ECM (Engine Control Module); a Powertrain Interface Module (PIM) is required to convert the

serial data generated by the ECM into UART serial data that is compatible with the BCM.

The ECM sends serial data to the PIM on the GM LAN bus. The PIM then converts the data to UART protocol and sends

it via circuit 800 to the BCM. Serial data is then sent to the instrument cluster along the secondary UART bus, circuit

1061. The following data is read by the instrument cluster, which then indicates the status as appropriate on the MFD

and/or instrument cluster indicators.

• Oil pressure.

• High temperature.

• Power Mode.

• Check engine (powertrain).

• Engine oil life.

• Transmission oil life.

DTC 11 will set if there is no ECM data message on the bus for more than 10 seconds. In practice, the trouble code is set

somewhere between 10 and 20 seconds after the instrument cluster receives the last ECM data message. The DTC is

reset within 10 seconds of the arrival of the ECM data message on the bus. The DTC is logged as a History DTC.

Refer to 3 Wiring Diagrams and Connectors to aid in diagnosis.

Test Description

The following numbers refer to the step numbers in the diagnostic table:

2-4 Checks the status of the modules using Tech 2.

5 Checks DTCs using Tech 2.

Diagnostic Table Notes

1 For further information on the ECM, refer to Section 6C1 Engine Management – V6.

2 For further information on the BCM, refer to Section 12J Body Control Module.

3 For Tech 2 information, refer to 2 Tech 2 Information.

DTC 11 Diagnostic Table

Step Action Yes No

1 Was the Diagnostic System Check performed?

Go to Step 2

Refer to

4.1 Diagnostic

System Check

2 1 Connect Tech 2 to the DLC.

2 On Tech 2 select:

Vehicle / Engine (select appropriate engine) then press the

Info soft key.

Does Tech 2 display the Engine identification information (i.e. Part

Number / Production Date)? Go to Step 3

Refer to Section

6C, Engine

Management

3 On Tech 2 select:

Chassis / PIM / Read DTC Information.

Have any DTCs set?

Refer to Section

6E1Powertrain

Interface Module –

V6 Go to step 4

Instrumentation Page 12C – 113

Page 12C – 113

Step Action Yes No

4 On Tech 2 select:

Body / BCM / Read DTC Information.

Have any DTCs set?

Refer to Section

12J Body Control

Module Go to step 5

5 1 Connect Tech 2 to the DLC.

2 On Tech 2 select:

Diagnostic Trouble Codes / Clear DTC Information.

3 Cycle the ignition off to on.

4 On Tech 2 select:

Diagnostic Trouble Codes / Read DTC Information.

Has DTC 11 set? Go to step 2 Go to Step 6

6 Are any other DTCs set? Refer to 5.1

Diagnostic Trouble

Code List System

serviceable

When all diagnosis and repairs are completed, clear all DTC and check the system for correct operation.

Instrumentation Page 12C – 114

Page 12C – 114

5.8 DTC 11 – No Serial Data from PCM – V8

Circuit Description

A PCM (Powertrain Control Module) is used with the GEN III V8 engine; a Powertrain Interface Module (PIM) is required

to convert the serial data generated by the PCM into UART serial data that is compatible with the BCM.

The PCM sends serial data to the PIM on the class 2 data bus. The PIM then converts the data to UART protocol and

sends it via circuit 800 to the BCM. Serial data is then sent to the instrument cluster along the secondary serial data bus,

circuit 1061. The following data is read by the instrument cluster, which then indicates the status as appropriate on the

MFD and/or cluster indicators:

• Oil pressure.

• High temperature.

• Power Mode.

• Check engine (powertrain).

• Engine oil life.

• Transmission oil life.

DTC 11 will set if there is no PCM data message on the bus for more than 10 seconds. In practice, the trouble code is set

somewhere between 10 and 20 seconds after the instrument cluster receives the last PCM data message. The DTC is

reset within 10 seconds of the arrival of the PCM data message on the bus. The DTC is logged as a History DTC.

Refer to 3 Wiring Diagrams and Connectors to aid in diagnosis.

Test Description

The following numbers refer to the step numbers in the diagnostic table:

2-4 Checks the status of the modules using Tech 2.

5-6 Checks DTCs using Tech 2.

Diagnostic Table Notes

1 For Tech 2 information, refer to 2 Tech 2 Information.

DTC 11 Diagnostic Table

Step Action Yes No

1 Was the Diagnostic System Check performed?

Go to Step 2

Refer to

4.1 Diagnostic

System Check

2 1 Connect Tech 2 to the DLC.

2 On Tech 2 select:

Vehicle / Engine (select appropriate engine) Then press the

Info soft key.

3 Press the Confirm soft key.

Does Tech 2 display the Engine identification information (i.e. Part

Number / Production Date)? Go to Step 3

Refer to, Section

6E3 Powertrain

Interface Module –

GEN III V8

3 On Tech 2 select:

Chassis / PIM / Read DTC Information.

Have any DTCs set?

Refer to Section

6E3 Powertrain

Interface Module –

GEN III V8 Go to step 4

4 On Tech 2 select:

Body / BCM / Read DTC Information.

Have any DTCs set?

Refer to Section

12J Body Control

Module Go to step 5

Instrumentation Page 12C – 115

Page 12C – 115

Step Action Yes No

5 1 On Tech 2 select:

Diagnostic Trouble Codes / Clear DTC Information.

2 Cycle the ignition off to on.

3 On Tech 2 select:

Diagnostic Trouble Codes / Read DTC Information.

Has DTC 11 set? Go to step 2 Go to Step 8

6 Are any other DTCs set? Refer to 5.1

Diagnostic Trouble

Code List System

serviceable

When all diagnosis and repairs are completed, clear all DTC and check the system for correct operation.

Instrumentation Page 12C – 116

Page 12C – 116

5.9 DTC 12 – No Serial Data from SDM

Circuit Description

The SRS Sensing and Diagnostic Module (SDM) sends serial data along the tertiary serial data bus, circuit 774, to the

BCM and then on to the instrument cluster on the secondary serial data bus, circuit 1061. This is read by the instrument

cluster, which displays the status of the SDM on the MFD and cluster indicator.

NOTE

There are two versions of SDM used by the SRS;

Version 8.0 is used on vehicles with 2-loop 3-loop

or 4-loop systems (left-hand drive only), while

version 8.1 is used on vehicles with a 6-loop

system. For more information, refer to

Section 12M Occupant Protection System.

DTC 12 will set if there is no serial data being received from the SDM. The DTC is reset within 10 seconds on the arrival

of a SDM data message on the bus. The DTC is logged as a History DTC.

Refer to 3 Wiring Diagrams and Connectors to aid in diagnosis.

Test Description

The following numbers refer to the step numbers in the diagnostic table:

2 Checks the status of the SDM using Tech 2.

3-4 Checks the condition of the wiring harness.

5-6 Checks DTCs using Tech 2.

Diagnostic Table Notes

1 For Tech 2 information, refer to 2 Tech 2 Information.

DTC 12 Diagnostic Table

Step Action Yes No

1 Was the Diagnostic System Check performed?

Go to Step 2

Refer to

4.1 Diagnostic

System Check

2 1 Connect Tech 2 to the DLC.

2 On Tech 2 select:

Body / SRS.

3 Press the Confirm soft key.

Does Tech 2 display the SDM identification information (i.e. Part

Number / Production Date)? Go to Step 3

Refer to Section

12M Occupant

Protection System

3 1 Remove the instrument cluster, refer to Section 1A3 Instrument

Panel and Console .

2 Using a multimeter set to measure resistance, probe between

connectors A15 – X2 pin 9 and P3 – X1 pin 2.

Does the multimeter indicate continuity? Go to Step 4 Repair or replace

circuit 1061

Instrumentation Page 12C – 117

Page 12C – 117

Step Action Yes No

4 1 If necessary, disconnect BCM A15 – X2.

2 Using a multimeter set to measure resistance, probe between

connectors A15 – X2 pin 6 and A15 – X2 pin 9.

Does the multimeter indicate continuity?

Go to Step 5

Check the BCM

connectors for

terminal retention. If

serviceable,

replace the BCM

refer to Section

12J Body Control

Module

5 1 Connect Tech 2 to the DLC.

2 On Tech 2 select:

Diagnostic Trouble Codes / Clear DTC Information.

3 Cycle the ignition off to on.

4 On Tech 2 select:

Diagnostic Trouble Codes / Read DTC Information.

Has DTC 12 set? Go to step 2 Go to Step 6

6 Are any other DTCs set? Refer to 5.1

Diagnostic Trouble

Code List System

serviceable

When all diagnosis and repairs are completed, clear all DTC and check the system for correct operation.

Instrumentation Page 12C – 118

Page 12C – 118

5.10 DTC 13 – No Instrument Poll from BCM

Circuit Description

The BCM uses the secondary serial data bus (circuit 1061) to send data to the instrument cluster.

DTC 13 will set if there is no instrument poll from the BCM for more than 10 seconds. In practice, the trouble code is set

somewhere between 10 and 20 seconds after the instrument cluster receives the last instrument poll. T he DTC is reset

within 10 seconds of the arrival of an instrument poll from the BCM. The DTC is logged as a History DTC.

Refer to 3 Wiring Diagrams and Connectors to aid in diagnosis.

Test Description

The following numbers refer to the step numbers in the diagnostic table:

2-3 Checks the status of the BCM using Tech 2.

4-6 Checks the condition of the wiring harness.

8 Checks DTCs using Tech 2.

Diagnostic Table Notes

1 For Tech 2 information, refer to 2 Tech 2 Information.

DTC 13 Diagnostic Table

Step Action Yes No

1 Was the Diagnostic System Check performed?

Go to Step 2

Refer to

4.1 Diagnostic

System Check

2 1 Connect Tech 2 to the DLC.

2 On Tech 2 select:

Body / Body Control Module.

Does Tech 2 display the BCM identification information (i.e. Part

Number / Production Date)? Go to Step 3

Refer to Section

12J Body Control

Module for further

diagnosis

3 On Tech 2 select:

Body / Body control module / Diagnostic Trouble Codes / Read

DTC information.

Have any DTCs set?

Refer to Section

12J Body Control

Module Go to Step 4

4 Using a multimeter set to measure resistance, back probe connectors

A15 – X2 pin 5 and A15 – X2 pin 9.

Does the multimeter indicate continuity? Go to Step 5

Replace the BCM

refer to Section

12J Body Control

Module

5 Using a multimeter set to measure resistance, probe circuit 1061 for

open circuit, short to ground or short to battery voltage.

Did you find a fault condition?

NOTE

Disconnect each control module in circuit 1061 one at a

time to isolate the fault in the circuit or to identify the

control module causing the fault. Refer to Section

12J Body Control

Module Go to step 6

Instrumentation Page 12C – 119

Page 12C – 119

Step Action Yes No

6 1 Remove the instrument cluster, refer to Section 1A3 Instrument

Panel and Console.

2 Gain access to the BCM, refer to

Section 12J Body Control Module.

3 Disconnect BCM A15 – X2.

4 Using a multimeter set to measure resistance, probe between

connectors A15 – X2 pin 9 and P3 – X1 pin 2.

Does the multimeter indicate continuity? Go to Step 7 Repair or replace

circuit 1061

7 1 Connect Tech 2 to the DLC.

2 On Tech 2 select:

Diagnostic Trouble Codes / Clear DTC Information.

3 Cycle the ignition off to on.

4 On Tech 2 select:

Diagnostic Trouble Codes / Read DTC Information.

Has DTC 13 set? Go to step 2 Go to Step 6

8 Are any other DTCs set? Refer to 5.1

Diagnostic Trouble

Code List System

serviceable

When all diagnosis and repairs are completed, clear all DTC and check the system for correct operation.

Instrumentation Page 12C – 120

Page 12C – 120

5.11 DTC 14 – No Serial Communication Data

Circuit Description

When investigating any complaint of an instrument cluster problem or malfunction, always begin diagnosis with the

Diagnostic System Check. This check is a preliminary procedure that checks that the instrument cluster is powered up,

communicating on the serial data line, helping to identify a problem or malfunction and directing the reader to the

appropriate diagnostic table.

With Tech 2 connected to the DLC and ignition switched on, Tech 2 should display serial data communication. If Tech 2

does not display serial data, the serial data circuit maybe open or shorted.

Several other control modules are connected to the UART serial data lines:

Module Data Bus Allocations for V6 and V8

The primary UART bus is connected to the PIM and the DLC connector.

The secondary UART bus is connected to all other modules in the vehicle except the SDM, which connects to the tertiary

UART bus.

Any of these control modules could cause a fault on the serial data line. This fault could result in Tech 2 not being able to

display serial data.

DTC 14 will set if there is no serial data message on the serial data bus for more than 10 seconds. In practice, the trouble

code is set somewhere between 10 and 20 seconds after the instrument cluster receives the last serial data message.

The trouble code is reset within 10 seconds of the arrival of an instrument cluster poll from the BCM. The DTC is logged

as a History DTC.

Refer to 3 Wiring Diagrams and Connectors to aid in diagnosis.

Test Description

The following numbers refer to the step numbers in the diagnostic table:

2-3 Checks the status of the BCM using Tech 2.

4-7 Checks the condition of the wiring harness.

8-9 Checks DTCs using Tech 2.

Diagnostic Table Notes

1 For Tech 2 information, refer to 2 Tech 2 Information.

Instrumentation Page 12C – 121

Page 12C – 121

DTC 14 Diagnostic Table

Step Action Yes No

1 Was the Diagnostic System Check performed?

Go to Step 2

Refer to

4.1 Diagnostic

System Check

2 1 Connect Tech 2 to the DLC.

2 On Tech 2 select:

Body / Body Control Module.

Does Tech 2 display the BCM identification information (i.e. Part

Number / Production Date)? Go to Step 3

Refer to Section

12J Body Control

Module for further

diagnosis

3 On Tech 2 select:

Body / Body Control Module / Diagnostic Trouble Codes / Read

DTC information.

Has any DTC set? Refer to Section

12J Body Control

Module Go to Step 4

4 1 Gain access to the BCM, refer to 12J Body Control Module.

2 Using a multimeter set to measure resistance, back probe

connectors A15 – X2 pin 5 and A15 – X2 pin 9.

Does the multimeter indicate continuity? Go to Step 5

Replace the BCM

refer to Section

12J Body Control

Module

5 Using a multimeter set to measure resistance, probe circuit 1061 for

open circuit, short to ground or short to battery voltage.

Did you find a fault condition?

NOTE

Disconnect each control module in circuit 1061 one at a

time to isolate the fault in the circuit or to identify the

control module causing the fault.

Refer to Section

12J Body Control

Module Go to step 6

6 1 Remove the instrument cluster, refer to Section 1A3 Instrument

Panel and Console.

2 Gain access to the BCM refer to Section 12J Body Control

Module.

3 Disconnect BCM A15 – X2.

4 Using a multimeter set to measure resistance, probe between

connectors A15 – X2 pin 9 and P3 – X1 pin 2.

Does the multimeter indicate continuity? Go to Step 7 Repair or replace

circuit 1061

7 Using a multimeter set to measure resistance, probe between

connector P3 – X1 pin 17 and a known ground.

Does the multimeter indicate continuity? Go to Step 8

Repair ground

circuit as

necessary

8 1 Connect Tech 2 to the DLC.

2 On Tech 2 select:

Diagnostic Trouble Codes / Clear DTC Information.

3 Cycle the ignition off to on.

4 On Tech 2 select:

Diagnostic Trouble Codes / Read DTC Information.

Has DTC 14 set? Go to step 2 Go to Step 8

9 Are any other DTCs set? Refer to 5.1

Diagnostic Trouble

Code List System

serviceable

When all diagnosis and repairs are completed, clear all DTC and check the system for correct operation.

Instrumentation Page 12C – 122

Page 12C – 122

5.12 DTC 15 – No Serial Data from Audio

System

Circuit Description

The audio system sends serial data to the instrument cluster along the secondary serial data bus, circuit 1061.

DTC 15 will set if there is no radio data message on the bus for more than 10 seconds. In practice, the trouble code is set

somewhere between 10 and 20 seconds after the instrument cluster receives the last Radio data message. The DTC is

reset within 10 seconds of the arrival of a Radio data message on the bus. The DTC is logged as a History DTC.

NOTE

If the vehicle is fitted with an aftermarket

entertainment system, DTC 15 will always be set.

Refer to 3 Wiring Diagrams and Connectors to aid in diagnosis.

Test Description

The following numbers refer to the step numbers in the diagnostic table:

2-3 Checks the status of the audio system using Tech 2.

4 Checks the condition of the wiring harness.

5 Checks DTCs using Tech 2.

Diagnostic Table Notes

1 For Tech 2 information, refer to. 2 Tech 2 Information

DTC 15 Diagnostic Table

Step Action Yes No

1 Was the Diagnostic System Check performed?

Go to Step 2

Refer to

4.1 Diagnostic

System Check

2 1 Connect Tech 2 to the DLC.

2 On Tech 2 select:

Diagnostics / Model Year / Vehicle / Body / Audio System.

Does Tech 2 display the AHU identification information (i.e. Part

Number / Production Date)? Go to Step 3

Refer to Section

12D Entertainment

System

3 On Tech 2 select:

Audio System / Diagnostic Trouble Codes / Read DTC

information.

Has any DTC set? Go to Step 4

Refer to Section

12D Entertainment

System

4 Using a multimeter set to measure resistance, probe between

connectors A133 – X1 pin A1 and P3 – X1 pin 2.

Does the multimeter indicate continuity? Go to Step 5 Repair or replace

circuit 1061

Instrumentation Page 12C – 123

Page 12C – 123

Step Action Yes No

5 1 Connect Tech 2 to the DLC.

2 On Tech 2 select:

Diagnostic Trouble Codes / Clear DTC Information.

3 Cycle the ignition off to on.

4 On Tech 2 select:

Diagnostic Trouble Codes / Read DTC Information.

Has DTC 15 set? Go to step 2 Go to Step 6

6 Are any other DTCs set? Refer to 5.1

Diagnostic Trouble

Code List System

serviceable

When all diagnosis and repairs are completed, clear all DTC and check the system for correct operation.

Instrumentation Page 12C – 124

Page 12C – 124

5.13 DTC 16 – Fuel Level System

Circuit Description

The ECM (V6) or PCM (V8) supplies a 5-volt reference voltage and a ground circuit to the fuel gauge sender unit. The

fuel sender provides a voltage value to the ECM or PCM, which converts it to data to be sent to the PIM via GM LAN for

(V6) or the class 2 data bus for (V8). The PIM then converts the data to UART protocol and sends it to the BCM, which in

turn transfers the data to the instrument cluster via the secondary UART bus. The fuel sender resistance will vary

between 40 ± 5 Ω and 250 ± 5 Ω from no fuel in the tank, to a full tank.

Refer to 3 Wiring Diagrams and Connectors to aid in diagnosis.

Test Description

The following numbers refer to the step numbers in the diagnostic table:

3-7 Checks the system using Tech 2.

Diagnostic Table Notes

1 For Tech 2 information, refer to 2 Tech 2 Information.

DTC 16 Diagnostic Table

Step Action Yes No

1 Was the Diagnostic System Check performed?

Go to Step 2

Refer to

4.1 Diagnostic

System Check

2 Did the fuel gauge respond during the self-test in step 1?

Go to Step 3

Replace the

instrument cluster

refer to Section 1A3

Instrument Panel

and Console

3 On Tech 2 select:.

Pow ertrain Interface Module / Di agnostic Trouble Codes / Read

DTC Information.

Have any DTCs set?

Refer to Section

6E1 Powertrain

Interface Module –

V6 or

Section 6E3

Powertrain Interface

Module – Gen IIIV8 Go to Step 4

4 On Tech 2 select:.

Diagnostics / Model Year / Vehicle / Module ECU Presence Check.

NOTE

Tech 2 calls the ECM or PCM, Engine.

Does Tech 2 show the ECM or PCM as present? Go to Step 5

Refer to Section

6C1-2 Engine

Management – V6 –

Diagnostics or

Section 6C3 – 2

Powertrain

Management – GEN

III V8 – Diagnostics

5 On Tech 2 select:.

Engine/ Select Engine Type / Data Display / Instrument Data

Scroll down to Fuel Level and Fuel Level Sensor displays.

Does Tech 2 show that the ECM (V6) or PCM (V8) as receiving a fuel

level signal? Eg: Fuel Level – 20 Litres and Fuel Level Sensor –2.5V

Refer to Section

6C1-2 Engine

Management – V6 –

Diagnostics or

Section 6C3 – 2

Powertrain

Management – GEN

III V8 – Diagnostics Go to Step 6

Instrumentation Page 12C – 125

Page 12C – 125

Step Action Yes No

6 1 Connect Tech 2 to the DLC.

2 On Tech 2 select:

Diagnostic Trouble Codes / Clear DTC Information.

3 Cycle the ignition off to on.

4 On Tech 2 select:

Diagnostic Trouble Codes / Read DTC Information.

Has DTC 16 set? Go to step 2 Go to Step 7

7 Are any other DTCs set? Refer to 5.1

Diagnostic Trouble

Code List System serviceable

When all diagnosis and repairs are completed, clear all DTCs and check the system for correct operation.

Instrumentation Page 12C – 126

Page 12C – 126

5.14 DTC 19 – Incorrect SDM Detected

Circuit Description

The SRS Sensing and Diagnostic Module (SDM) sends serial data along the serial data line via the BCM. This is read by

the instrument cluster, which displays the status of the SDM on the MFD and the SRS indicator.

Refer to 3 Wiring Diagrams and Connectors to aid in diagnosis.

Test Description

The following numbers refer to the step numbers in the diagnostic table:

2 Checks for any set DTCs using Tech 2.

4 Programming using Tech 2.

5 Checks DTCs using Tech 2.

Diagnostic Table Notes

1 For Tech 2 information, refer to 2 Tech 2 Information.

DTC 19 Diagnostic Table

Step Action Yes No

1 Was the Diagnostic System Check performed?

Go to Step 2

Refer to

4.1 Diagnostic

System Check

2 1 Connect Tech 2 to the DLC.

2 On Tech 2 select:

Body / Instrument / Diagnostic Trouble Codes / Read DTC

Information.

Is DTC 12 set?

Refer to 5.9 DTC

12 – No Serial Data

from SDM Go to Step 3

3 Check that the correct SMD has been fitted to the vehicle.

Has the correct SMD been fitted? Go to step 4 Replace with the

correct SMD

4 On Tech 2 select:

Body / Instrument / Program / Configuration

and program the instrument cluster, refer to 7.2 Programming.

Was programming completed successfully? Go to step 5 Repeat this Step

5 1 Connect Tech 2 to the DLC.

2 On Tech 2 select:

Diagnostic Trouble Codes / Clear DTC Information.

3 Cycle the ignition off to on.

4 On Tech 2 select:

Diagnostic Trouble Codes / Read DTC Information.

Is DTC 19 still set?

Replace the

Instrument Cluster

refer to Section 1A3

Instrument Panel

and Console Go to Step 6

6 Are any other DTCs set? Refer to 5.1

Diagnostic Trouble

Code List System serviceable

When all diagnosis and repairs are completed, clear all DTC and check the system for correct operation.

Instrumentation Page 12C – 127

Page 12C – 127

5.15 DTC 21 or 22 – Trip Switch Faulty

Circuit Description

The resistance presented to the instrument cluster on terminal X1-31 is dependent upon the button selected on the trip

computer switch.

DTC 21 will set if the trip computer switch resistance is less than 1000 Ω for 100 ms. The DTC is reset as soon as the

switch resistance is greater than 1000 Ω. The DTC is logged as a History DTC.

Refer to 3 Wiring Diagrams and Connectors to aid in diagnosis.

Test Description

The following numbers refer to the step numbers in the diagnostic table:

2 Checks the system using Tech 2.

3-6 Checks the switch assembly.

7-8 Checks DTCs using Tech 2.

Diagnostic Table Notes

1 For Tech 2 information, refer to 2 Tech 2 Information.

2 Refer to Section 1A3 Instrument Panel and Console.

DTC 21 or 22 Diagnostic Table

Step Action Yes No

1 Was the Diagnostic System Check performed?

Go to Step 2

Refer to

4.1 Diagnostic

System Check

2 1 Connect Tech 2 to the DLC.

2 On Tech 2 select:

Body / Body Control Module.

Does Tech 2 display the AHU Identification information (i.e. Part

Number / Production Date)? Go to Step 3

Refer to Section

12J Body Control

Module for further

diagnosis

3 Check the switch for obvious signs of damage.

Is the switch serviceable? Go to Step 4

Replace the switch

refer to Section

1A3 instrument

Panel and Console

4 1 Remove the switch, refer to Section 1A3 instrument Panel and

Console.

2 Using a multimeter set to measure resistance, test the switch as

detailed in 3 Wiring Diagrams and Connectors.

Is the switch serviceable? Go to Step 5

Replace the switch

refer to Section

1A3 instrument

Panel and Console

5 1 Remove the instrument cluster, refer to Section 1A3 Instrument

Panel and Console.

2 Using a multimeter set to measure resistance, probe between

connector P3 – X1 pin 31 and a known ground.

Does the multimeter indicate continuity? Repair or replace

circuit 894 Go to Step 6

6 Using a multimeter set to measure resistance, probe between

connector P3 – X1 pin 18 and a known ground.

Does the multimeter indicate continuity? Repair or replace

circuit 897 Go to Step 6

Instrumentation Page 12C – 128

Page 12C – 128

Step Action Yes No

7 1 Connect Tech 2 to the DLC.

2 On Tech 2 select:

Diagnostic Trouble Codes / Clear DTC Information.

3 Cycle the ignition off to on.

4 On Tech 2 select:

Diagnostic Trouble Codes / Read DTC Information.

Has DTC 21 or 22 set? Go to step 2 Go to Step 7

8 Are any other DTCs set? Refer to 5.1

Diagnostic Trouble

Code List System

serviceable

When all diagnosis and repairs are completed, clear all DTC and check the system for correct operation.

Instrumentation Page 12C – 129

Page 12C – 129

5.16 DTC 24 – EEPROM Checksum Failure

Circuit Description

The EEPROM (Electrically Erasable Programmable Read Only Memory) is part of the printed circuit board housed within

the instrument cluster. It stores variables required in the operation of the instrument cluster and in the interpretation of the

incoming data and can be programmed for different instrument levels. If DTC 24 was set because of interrupted

instrument programming, then the following diagnostic table will need to be followed.

DTC 24 will set if the EEPROM checksum is incorrect. The testing of the EEPROM checksum occurs every time the

ignition is turned on. The DTC is reset when the EEPROM checksum is tested as being correct. The DTC is logged as a

History DTC.

Refer to 3 Wiring Diagrams and Connectors to aid in diagnosis.

Test Description

The following numbers refer to the step numbers in the diagnostic table:

2 Checks the programming configuration using Tech 2.

3-4 Checks DTCs using Tech 2.

Diagnostic Table Notes

1 If the programmed instrument cluster values are corrupted, reprogramming can be carried out via Tech 2,

refer to 7.2 Programming.

2 For Tech 2 information, refer to 2 Tech 2 Information.

DTC 24 Diagnostic Table

Step Action Yes No

1 Was the Diagnostic System Check performed?

Go to Step 2

Refer to

4.1 Diagnostic

System Check

2 1 Connect the Tech 2 to the DLC.

2 On Tech 2 select:

Body / Instrument / Program / Configuration

and program the instrument cluster, refer to 7.2 Programming.

Check the displayed items to verify the correct configuration

programming.

Is programming completed successfully? Go to Step 3

Replace the

instrument cluster

refer to Section

1A3 Instrument

Panel and

Console

3 1 On Tech 2 select:

Diagnostic Trouble Codes / Clear DTC Information.

2 Cycle the ignition off to on.

3 On Tech 2 select:

Diagnostic Trouble Codes / Read DTC Information.

Has DTC 24 set? Go to step 2 Go to Step 4

4 Are any other DTCs set? Refer to 5.1

Diagnostic Trouble

Code List System

serviceable

When all diagnosis and repairs are completed, clear all DTC and check the system for correct operation.

Instrumentation Page 12C – 130

Page 12C – 130

6 Diagnostics For Non DTC Faults

The instrument cluster indicators and MFD are triggered by information or signals which can be either internally

generated, or be input to the cluster via the serial data bus from an external module or component, or hard-wired from a

module or switch. Some of these components do not set a DTC in the event of a component failure. The following

diagnostic procedures are devised to assist in these cases:

• Diagnosis for Hard-wired Input Signals • Alternator Warning

• Diagnosis for instrument cluster functions • Trip Computer Switch

• Front Fog Lamps On • Instrument Illumination

• Turn Signal Indicator Lamps • Brake Fail / Park Brake Warning

• High Beam Indicator Lamp • Brake Fluid Warning

• Security Status Indicator • Speedometer Diagnosis

• ABS OFF Warning Indicator • Tachometer Diagnosis

• Cruise Control • Coolant Temperature Gauge Diagnosis

• Low Traction Control Display • Fuel Level Gauge Diagnosis

Diagnosis For Hard-wired Input Signals

The following table provides diagnostic information for the instrument cluster hard-wired inputs.

Display Indicator / MFD Action

Front Fog Lamps Indicator Refer to 6.1 Front Fog Lamp Indicator Not W orking

Left Turn Indicator Refer to 6.2 Turn Signal Indicator

Right Turn Indicator Refer to 6.2 Turn Signal Indicator

High Beam Indicator Refer to 6.3 High Beam Indicator

Security Indicator Refer to 6.4 Security Status Indicator

Trip Computer

Switch MFD Refer to6.13 Trip Computer Switch

Brake (Park/Fail) Indicator / MFD Refer to 6.15 Brake Fail / Park Brake Warning

Speedometer Gauge Refer to 6.16 Speedometer Diagnosis

Tachometer Gauge Refer to 6.17 Tachometer Diagnosis

Seat Belt Indicator Check seat belt switch, refer to 12M Occupant Protection System if

serviceable replace the instrument cluster; refer to 1A3 Instrument

Panel and Console.

Diagnosis For Serial Data Input Signals

The following table provides diagnostic information for the instrument cluster serial data inputs

Display Indicator / MFD Action

ABS off (V6) Indicator / MFD Refer to6.5 ABS OFF Warning Indicator – V6

ABS off (V8) Indicator / MFD Refer to 6.6 ABS OFF Warning Indicator – V8

Cruise Control (V6) MFD Refer to 6.7 Cruise Control – V6

Cruise Control (V8) MFD Refer to 6.8 Cruise Control – V8

Low Traction (V6) MFD Refer to 6.9 Low Traction Control Display – V6

Low Traction (V8) MFD Refer to 6.10 Low Traction Control Display – V8

Alternator (V6) Indicator / MFD Refer to 6.11 Alternator Warning – V6

Alternator (V8) Indicator / MFD Refer to 6.12 Alternator Warning – V8

Illumination Instrument Refer to 6.14 Instrument Illumination

Coolant Temp Gauge Refer to 6.18 Coolant Temperature Gauge Diagnostic

Fuel Level Gauge Refer to 6.19 Fuel Level Gauge Diagnosis

Instrumentation Page 12C – 131

Page 12C – 131

6.1 Front Fog Lamp Indicator Not Working

Circuit Description

When activating the front fog lamps by pulling the fog lamp switch out while the headlamp switch (S125) is in the PARK,

HEAD or AUTO positions, the fog lamp relay (R10) is energised via the BCM. This action turns on the front fog lamps

and illuminates the front fog lamp indicator in the instrument cluster; the following fuses protect the fog lamp circuit.

Ensure the fuses are serviceable before proceeding.

• F30 – Front right fog lamp.

• F31 – Front left fog lamp.

• F102 – Fog lamp relay and lamps.

Refer to 3 Wiring Diagrams and Connectors to aid in diagnosis.

Test Description

The following numbers refer to the step numbers in the diagnostic table:

2 Checks if the fog lamps are functioning.

3 Checks if the fog lamp indicator in the instrument cluster is functioning.

4 Checks the hard wire connection to the instrument cluster.

Diagnostic Table Notes

1 For all wiring harness fault diagnoses, refer to Section 12P Wiring Diagrams.

2 Refer to Section 12O Fuses, Relays and Wiring Harnesses.

Front Fog Lamp Indicator Not Working Diagnostic Table

Step Action Yes No

1 Was the Diagnostic System Check performed?

Go to Step 2

Refer to

4.1 Diagnostic

System Check

2 1 Turn the ignition switch on, and set the headlamp switch to the

PARK, HEAD or AUTO positions.

2 Turn the front fog lamps on.

Do the front fog lamps illuminate? Go to Step 3

Check the Park

Lamp / Fog Lamp

circuit and electrical

supply, refer to

Note 1

3 Does the front fog lamp indicator in the instrument cluster illuminate? System serviceable Go to Step 4

4 1 Turn the fog lamps off.

2 Turn the ignition off.

3 Remove the instrument cluster, refer to Section 1A3 Instrument

Panel and Console.

4 Using a multimeter set to measure resistance, probe between

connectors P3 – X1 pin 4 and S125 – X1 pin 6.

Does the multimeter indicate continuity?

Replace the

instrument cluster;

refer to Section 1A3

Instrument Panel

and Console Repair or replace

circuit 1317

When all diagnosis and repairs are completed, check the system for correct operation.

Instrumentation Page 12C – 132

Page 12C – 132

6.2 Turn Signal Indicator

Circuit Description

The turn signal circuit 239 has its battery supply provided by R21, the ignition control relay. T his means the ignition switch

must be in the ON position before the turn indicator circuit is activated. This circuit is protected by fuse F12 and F105.

When the hazard warning switch S120 is activated, a vehicle ground is placed on BCM connector A15 – X3 pin 16 via

circuits 151 and 111 to indicate to the BCM the hazard lamps are required to flash. The BCM then pulses its internal

Hazard / Theft indicator relay, which places battery voltage on its moving contact to appear on the two vehicle marker

lamp circuits simultaneously.

Under normal conditions, when S231 is moved to indicate a left or right turn, battery voltage passes through the flasher

relay R19, circuit 27 and S231 to the left-hand (circuit 1314) or right-hand (circuit 1315) turn signal indicator lamps and

the corresponding instrument cluster indicators.

NOTE

• It is presumed in this diagnostic check that the

external turn signal indicators function

correctly.

• The following tests assume the BCM in the

vehicle is functioning normally.

Refer to 3 Wiring Diagrams and Connectors to aid in diagnosis.

Test Description

The following numbers refer to the step numbers in the diagnostic table:

2-3 Checks the turn signal harness connection at the instrument cluster.

Diagnostic Table Notes

1 All turn signal indicator lamps obtain their battery supplies from two separate sources depending on what function

they are performing:

2 For further information, refer to Section 12J Body Control Module.

4 For Tech 2 information, refer to 2 Tech 2 Information.

Instrumentation Page 12C – 133

Page 12C – 133

Turn Signal Indicator Diagnostic Table

NOTE

• It is presumed in this diagnostic check that the

external turn signal indicators function

correctly.

• The following tests assume the BCM in the

vehicle is functioning normally.

Step Action Original Display Yes No

1 Has the Diagnostic System Check been performed?

Go to Step 2

Refer to

4.1 Diagnostic

System Check

2 1 Remove the instrument cluster

2 Disconnect connector P3 – X1.

3 Using a multimeter set to measure voltage, probe P3 – X1 pin 8

and turn on the left indicator.

Does the multimeter indicate 12 V? Go to Step 3 Repair or replace

circuit 1314

3 Using a multimeter set to measure voltage, probe P3 – X1 pin 6 and

turn on the right indicator.

Does the multimeter indicate 12 V?

Replace instrument

cluster, refer to

Section 1A3

Instrument Panel

and Console Repair or replace

circuit 1315

When all diagnosis and repairs are completed, check the system for correct operation.

Instrumentation Page 12C – 134

Page 12C – 134

6.3 High Beam Indicator

When the headlamp dipswitch lever (S231) is pressed into the HIGH BEAM position, Level 1 headlamps require that the

low beam be switched off while the high beam lamps are on. In Level 2 and 3 vehicles, both the low and high beam

lamps are operated simultaneously. Therefore, the circuitry associated with the dipswitch reflects this difference.

Circuit Description

When high beam is selected, the switch S231 supplies an earth to the instrument cluster P3 – X1 pin 7 that illuminates

the high beam indicator LED.

Refer to 3 Wiring Diagrams and Connectors to aid in diagnosis.

Test Description

The following numbers refer to the step numbers in the diagnostic table:

2 Checks if the high beam lights are functioning.

3 Checks if the high beam indicator in the instrument cluster is functioning.

4 Checks the wiring harness from the instrument cluster to the headlight switch.

Diagnostic Table Notes

1 Refer to Section 12P Wiring Diagrams for further information.

2 For Tech 2 information, refer to 2 Tech 2 Information.

High Beam Indicator Diagnostic Table

Step Action Yes No

1 Has the Diagnostic System Check been performed?

Go to Step 2

Refer to

4.1 Diagnostic

System Check

2 With the headlight switch in the ON position, activate the HIGH BEAM

switch.

Do the high beam lamps illuminate?

Go to Step 3

Check the

Headlamp (High

Beam) circuit.

Check the electrical

supply and fuses

F102 and F31, refer

to Note 1

3 Does the high beam indicator in the instrument cluster illuminate? System serviceable Go to Step 4

4 1 Turn the ignition off.

2 Remove the instrument cluster, refer to Section 1A3 Instrument

Panel and Console.

3 Using a multimeter set to measure voltage, probe between

connector P3 – X1 pin 7, and a known ground.

4 Activate the high beam switch and note the voltage reading.

5 Release the high beam switch and note the voltage reading.

Does the multimeter indicate High beam OFF = 12 V

Does the multimeter indicate High beam ON = 0 V

Replace the

instrument cluster;

refer to Section 1A3

Instrument Panel

and Console

Repair or replace

circuit 1969 or

replace the turn

signal indicator

switch assembly

When all diagnosis and repairs are completed, check the system for correct operation.

Instrumentation Page 12C – 135

Page 12C – 135

6.4 Security Status Indicator

For information on this indicator, refer to Section 12J Body Control Module.

Instrumentation Page 12C – 136

Page 12C – 136

6.5 ABS OFF Warning Indicator – V6

The ABS Off indicator is illuminated for 5 seconds after the ignition has been switched from the OFF to the ON position. If

the ABS system is functioning normally, the warning indicator will extinguish after the 5-second period. If the ignition

switch is moved to the START position and the engine commences to run during this period, then the ABS warning

indicator will extinguish before the 5-second period has elapsed.

If there is a fault within the ABS / TCS module at ignition on, or during normal operation, the module is disabled and the

ABS Off indicator remains illuminated. Additionally, the MFD displays an animated icon, which can be cleared by

pressing the Mode button on the trip computer switch. The ABS off indicator remains illuminated until the condition is

cleared.

Circuit Description

The ABS (A38) module is connected to the GM LAN circuit 2500 and 2501 it sends data to the PIM, which converts it to

UART protocol. It is then sent to the BCM via circuit 800 and then via the secondary UART bus to the instrument cluster

(P3).

Should a fault exist in the ABS system the instrument cluster will display the appropriate message.

Refer to 3 Wiring Diagrams and Connectors to aid in diagnosis.

Test Description

The following numbers refer to the step numbers in the diagnostic table:

2-4 Checks if the ABS indicator in the instrument cluster is functioning.

Diagnostic Table Notes

1 Refer to Section 12J Body Control Module for further diagnosis.

2 For further information on the data bus communication system, refer to

Section 6E1 Powertrain Interface Module – V6.

3 For Tech 2 information, refer to 2 Tech 2 Information.

ABS OFF Warning Indicator – V6 Diagnostic Table

Step Action Yes No

1 Has the Diagnostic System Check been performed?

Go to Step 2

Refer to

4.1 Diagnostic

System Check

2 In the self diagnostic mode, does the ABS warning indicator

illuminate?

Go to step 3

Replace the

instrument cluster,

refer to Section 1A3

Instrument Panel

and Console

3 Turn the ignition from off to on.

Does the ABS Off warning indicator illuminate? Go to Step 4 Refer to Section

5B1 ABS – V6

4 Cycle the ignition from on to off to on while waiting for the ABS off

warning indicator to extinguish.

Does the ABS off warning indicator extinguish approximately

5 seconds after switching the ignition to on? System serviceable Refer to Section

5B1 ABS – V6

When all diagnosis and repairs are completed, clear all DTCs and check the system for correct operation.

Instrumentation Page 12C – 137

Page 12C – 137

6.6 ABS OFF Warning Indicator – V8

ABS OFF Warning Lamp Operation

The ABS Off indicator is illuminated for 5 seconds after the ignition has been switched from the OFF to the ON position. If

the ABS system is functioning normally, the warning indicator will extinguish after the 5-second period. If the ignition

switch is moved to the START position and the engine commences to run during this period, then the ABS warning

indicator will extinguish before the 5-second period has elapsed.

If there is a fault within the ABS / TCS module at ignition on, or during normal operation, the module is disabled and the

ABS Off indicator remains illuminated. Additionally, the MFD displays an animated icon, which can be cleared by

pressing the Mode button on the trip computer switch. The ABS off indicator remains illuminated until the condition is

cleared.

Circuit Description

The ABS system is connected to the instrument cluster via the Secondary UART serial data communication system.

Should a fault develop in the ABS system, the A37 module will send its warning indicator message to the instrument

cluster via the joint Secondary serial data system, where the instrument cluster will display the appropriate message.

Refer to 3 Wiring Diagrams and Connectors to aid in diagnosis.

Test Description

The following numbers refer to the step numbers in the diagnostic table:

2-4 Checks if the ABS indicator in the instrument cluster is functioning.

Diagnostic Table Notes

1 For information on using and connecting Tech 2 to the vehicle, refer to Section OC Tech 2.

2 For further information on the data bus communication system, refer to

Section 6E3 Powertrain Interface Module – GEN III V8.

3 .For Tech 2 information, refer to 2 Tech 2 Information.

ABS OFF Warning Indicator – V8 Diagnostic Table

Step Action Yes No

1 Has the Diagnostic System Check been performed?

Go to Step 2

Refer to

4.1 Diagnostic

System Check

2 In the self diagnostic mode, does the ABS warning indicator

illuminate?

Go to step 3

Replace the

instrument cluster,

refer to Section 1A3

Instrument Panel

and Console

3 Turn the ignition from off to on.

Does the ABS Off warning indicator illuminate? Go to Step 4

Refer to Section

5B5 ABS – Gen III

4 Cycle the ignition from on to off to on while waiting for the ABS off

warning indicator to extinguish.

Does the ABS off warning indicator extinguish approximately

5 seconds after switching the ignition to on? System serviceable

Refer to Section

5B5 ABS – Gen III

When all diagnosis and repairs are completed, clear all DTCs and check the system for correct operation.

Instrumentation Page 12C – 138

Page 12C – 138

6.7 Cruise Control – V6

The PIM has the cruise controls connected to it from the turn signal and cruise control switch assembly, When the PIM

receives the commands from these controls, it sends these commands as messages via the GM LAN to the ECM, which

implements the commands.

Circuit Description

When the PIM receives the Cruise on signal from the cruise control switches (S43), the PIM sends the associated

CRUISE command to the ECM via the GM LAN. The ECM sends a Cruise Enabled data message to the MFD via the

PIM to the (P3) instrument cluster. The Cruise Enabled message is displayed for 2 seconds on the MFD and then

reduces to a minimised display.

When the cruise control is then activated, the instrument cluster receives the Cruise Active signal from the ECM. The

cruise control CRUISE ACTIVE MFD message then appears for 2 seconds before becoming a minimised display.

When the cruise control is deactivated, the Cruise Inactive signal is sent from the ECM to the instrument cluster. The

cruise control ACTIVE icon extinguishes immediately and the Cruise Inactive animation is displayed for 2 seconds.

When the cruise control is disabled by pressing the cruise ON–OFF on the cruise control switch, the Cruise Off signal is

sent from the ECM to the instrument cluster. The CRUISE icon extinguishes immediately and the Cruise Off animation is

displayed for 2 seconds.

NOTE

The 2 second cruise enabled animation will only

display on the MFD screen if alerts or warnings

are inactive.

Refer to 3 Wiring Diagrams and Connectors to aid in diagnosis.

Test Description

The following numbers refer to the step numbers in the diagnostic table:

2-5 Checks if the cruise control display in the MFD is functioning.

6 Checks the MFD cruise control animation using Tech 2.

Diagnostic Table Notes

1 For Tech 2 information, refer to 2 Tech 2 Information.

Cruise Control – V6 Diagnostic Table

Step Action Yes No

1 Has the Diagnostic System Check been performed?

Go to Step 2

Refer to

4.1 Diagnostic

System Check

2 1 Turn the ignition on.

2 Press the cruise ON–OFF button on the cruise control switch

assembly.

Does the CRUISE icon in the instrument cluster illuminate and the

Cruise Enable animation display for 2 seconds on the MFD? Go to Step 3 Go to Step 6

3 With the vehicle travelling at greater than 40 km/h press the cruise set

switch, located on the cruise control switch assembly.

Does the CRUISE ACTIVE icon in the instrument cluster MFD

illuminate and is the Cruise Active animation displayed for 2 seconds? Go to Step 4 Go to Step 6

4 Press the cruise ON–OFF button on the cruise control switch

assembly.

Does the cruise ACTIVE icon extinguish and is the Cruise Inactive

animation displayed for 2 seconds. Go to Step 5 Go to Step 6

Instrumentation Page 12C – 139

Page 12C – 139

Step Action Yes No

5 Press the cruise ON–OFF button located on the cruise control switch

assembly.

Does the CRUISE icon extinguish and is the Cruise Off animation

displayed for 2 seconds? System serviceable Go to Step 6

6 1 Connect Tech 2 to the DLC.

2 Turn the ignition on.

3 On Tech 2 select:

Body / Powertrain Interface Module / Miscellaneous Tests /

Cruise Control.

Conduct the test as directed by soft keys at the bottom of the

Tech 2 screen.

Does the CRUISE icon illuminate and is the Cruise Enable animation

displayed for 2 seconds, then the CRUISE icon extinguishes and is

the Cruise Off animation displayed for 2 seconds when the test is

cancelled? Refer to Section

12E Cruise Control

Replace the

instrument cluster;

refer to Section 1A3

Instrument Panel

and Console

When all diagnosis and repairs are completed, clear all DTCs and check the system for correct operation

Instrumentation Page 12C – 140

Page 12C – 140

6.8 Cruise Control – V8

The A5 Powertrain Interface Module (PIM) has the ON–OFF cruise switch connected to it while the TAC (Throttle

Actuator Control) has the RSM / ACL and SET / DCL controls connected to it from switch assembly. The TAC

communicates with the PCM via the UART Bus, the PCM communicates with the PIM via the class 2 data bus.

Circuit Description

The cruise switches on the Cruise Control stalk connect between the PIM and the throttle actuator control module.

When the cruise control is turned ON by ON–OFF switch, the PIM sends the associated CRUISE ON command to the

Powertrain Control Module via the Class 2 data communications system. The PCM sends a message to the instrument

cluster via serial data. All instrument cluster cruise control massages are received from the PCM, via the serial data bus.

The message received depends on the cruise control signals sent from the PIM and TAC modules to the PCM. The

Cruise Enabled message is displayed for 2 seconds on the MFD and then reduces to a minimised display.

Refer to 3 Wiring Diagrams and Connectors to aid in diagnosis.

Test Description

The following numbers refer to the step numbers in the diagnostic table:

2-5 Checks if the cruise control display in the MFD is functioning.

6 Checks if the cruise control display in the MFD is functioning using Tech 2.

Diagnostic Table Notes

1 For Tech 2 information, refer to 2 Tech 2 Information.

Cruise Control (V8) Diagnostic Table

Step Action Yes No

1 Has the diagnostic system check been performed?

Go to Step 2

Refer to

4.1 Diagnostic

System Check

2 1 Turn the ignition on.

2 Press the cruise ON–OFF button located on the cruise control

switch assembly.

Does the CRUISE icon in the instrument cluster MFD illuminate and

the Cruise Enable animation run for 2 seconds? Go to Step 3 Go to Step 6

3 With the vehicle travelling at greater than 40 km/h press the cruise Set

switch, located on the cruise control switch assembly.

Does the CRUISE ACTIVE icon in the instrument cluster MFD

illuminate and is the Cruise Active animation displayed for 2 seconds? Go to Step 4 Go to Step 6

4 Press the cruise ON–OFF button located on the cruise control switch

assembly.

Does the cruise ACTIVE icon extinguish and is the Cruise Inactive

animation displayed for 2 seconds. Go to Step 5 Go to Step 6

5 Press the cruise ON–OFF button located on the cruise control switch

assembly.

Does the CRUISE icon extinguish and is the Cruise Off animation

displayed for 2 seconds? System serviceable Go to Step 6

Instrumentation Page 12C – 141

Page 12C – 141

Step Action Yes No

6 1 Connect Tech 2 to the DLC.

2 Turn the ignition on.

3 On Tech 2 select:

Body / Powertrain Interface Module / Miscellaneous Tests /

Cruise Control.

Conduct the test as directed by soft keys at the bottom of the

Tech 2 screen.

Does the CRUISE icon illuminate and is the Cruise Enable animation

displayed for 2 seconds, and does the CRUISE icon extinguish and is

the Cruise Off animation displayed for 2 seconds when the test is

cancelled?

Instrument cluster

serviceable

Refer to Section

12E Cruise Control

Replace the

instrument cluster;

refer to Section 1A3

Instrument Panel

and Console

When all diagnosis and repairs are completed, clear all DTCs and check the system for correct operation

Instrumentation Page 12C – 142

Page 12C – 142

6.9 Low Traction Control Display – V6

Circuit Description

When a low traction event occurs the ABS/TCS/ESP module sends a signal on the GM LAN to the PIM. This converts

the signal to UART protocol and sends it to the BCM. The instrument cluster receives a signal from the BCM via the

secondary UART bus and displays the ‘Low Traction’ warning message. When the Mode button on the trip computer

switch assembly is pressed, the warning message minimises to a low traction control-warning icon on the right of the

MFD. This warning icon remains illuminated while the low traction situation exists.

Refer to 3 Wiring Diagrams and Connectors to aid in diagnosis.

Test Description

The following numbers refer to the step numbers in the diagnostic table:

2 Checks the MFD low traction` animation using Tech 2.

Diagnostic Table Notes

1 To replace the instrument cluster, refer to Section 1A3 Instrument Panel and Console.

2 For Tech 2 information, refer to 2 Tech 2 Information.

Low Traction Control Display – V6 No ESP Diagnostic Table

Step Action Yes No

1 Has the diagnostic system check been performed?

Go to Step 2

Refer to

4.1 Diagnostic

System Check

2 1 Connect Tech 2 to the DLC.

2 Turn the ignition on.

3 On Tech 2 select:

Body / Instrument / Miscellaneous Tests / MFD Test / Low

Traction Warning. Conduct the test as directed by soft keys at

the bottom of the Tech 2 screen.

Does the low traction animated symbol and the fixed text Low Traction

warning in the instrument cluster illuminate?

Refer to Section 5B-

1 ABS V6 for further

diagnosis

Replace the

instrument cluster;

refer to Section 1A3

Instrument Panel

and Console

When all diagnosis and repairs are completed, clear all DTCs and check the system for correct operation.

Low Traction Control Display – V6 With ESP Diagnostic Table

Step Action Yes No

1 Has the diagnostic system check been performed?

Go to Step 2

Refer to

4.1 Diagnostic

System Check

2 1 Connect Tech 2 to the DLC.

2 Turn the ignition on.

3 On Tech 2 select:

Body / Instrument / Miscellaneous Tests / MFD Test / ESP

Warning. Conduct the test as directed by soft keys at the bottom

of the Tech 2 screen.

Does the low traction animated symbol and the fixed text Low Traction

warning in the instrument cluster illuminate?

Refer to Section 5B-

1 ABS V6 for further

diagnosis

Replace the

instrument cluster;

refer to Section 1A3

Instrument Panel

and Console

When all diagnosis and repairs are completed, clear all DTCs and check the system for correct operation.

Instrumentation Page 12C – 143

Page 12C – 143

6.10 Low Traction Control Display – V8

Circuit Operation

When a low traction event occurs, the instrument cluster receives a signal from the ABS / TCS module via the

secondary UART bus and displays the Low Traction warning message. When the Mode button on the trip computer

switch assembly is pressed, the warning message minimises to a low traction control-warning icon on the right of the

MFD. This warning icon remains illuminated while the low traction situation exists.

Refer to 3 Wiring Diagrams and Connectors to aid in diagnosis.

Test Description

The following numbers refer to the step numbers in the diagnostic table:

2 Checks the MFD low traction` animation using Tech 2.

Diagnostic Table Notes

1 For Tech 2 information, refer to 2 Tech 2 Information.

Low Traction Control Display – V8 Diagnostic Table

Step Action Yes No

1 Has the diagnostic system check been performed?

Go to Step 2

Refer to

4.1 Diagnostic

System Check

2 1 Connect Tech 2 to the DLC.

2 Turn the ignition on.

3 On Tech 2 select:

Body / Instrument / Miscellaneous Tests / MFD Test / Low

Traction.

Conduct the test as directed by soft keys at the bottom of the

Tech 2 screen.

Does the low traction animated symbol and the fixed text Low

Traction warning in the instrument cluster display? Go to step 3

Replace the

instrument cluster;

refer to Section 1A3

Instrument Panel

and Console

3 1 Turn the ignition off.

2 Disconnect the ABS / TCS module A37 connector X1.

3 Start the vehicle and allow the engine to idle.

Does the low traction animated symbol and the fixed text Low

Traction warning in the instrument cluster display?

Refer to Section 5B-

BS V8 for further

diagnosis

Replace the

instrument cluster;

refer to Section 1A3

Instrument Panel

and Console

When all diagnosis and repairs are completed, clear all DTCs and check the system for correct operation

Instrumentation Page 12C – 144

Page 12C – 144

6.11 Alternator Warning – V6

Operation

The Alternator Warning indicator is only illuminated for 6 seconds after the ignition is switched to the on position with the

engine not running.

If the Alternator data to the instrument cluster via the secondary UART bus is active and the engine speed has equalled

or exceeded 150 r.p.m for at least 5 seconds, the indicator is illuminated and / or the animated icon is displayed on the

MFD. The animated icon is only displayed if the engine is running, and remains displayed until the trip computer switch

MODE button is pressed, at which point the MFD reverts back to the previously displayed trip computer screen.

Circuit Description

The alternator has two signal wires connected to the ECM. These form the monitoring components of the alternator

system.

The ECM monitors the voltages produced on these lines, and if the alternator should be seen by the ECM to be

malfunctioning, it sends the Alternator Fault warning message to the PIM via the GM LAN, The PIM converts the data to

UART protocol and sends it to the BCM which is then sent to the instrument cluster via the secondary UART bus.

Refer to 3 Wiring Diagrams and Connectors to aid in diagnosis.

Test Description

The following numbers refer to the step numbers in the diagnostic table:

2 Checks if the Alternator warning LED is functioning.

3 Checks the MFD Alternator animation using Tech 2.

Diagnostic Table Notes

1 For Tech 2 information, refer to 2 Tech 2 Information.

Alternator Warning – V6 Diagnostic Table

Step Action Yes No

1 Has the diagnostic system check been performed?

Go to Step 2

Refer to

4.1 Diagnostic

System Check

2 Turn the ignition from off to on.

Does the alternator warning indicator illuminate for 6 seconds? System serviceable Go to Step 3

3 1 Connect the Tech 2 to the DLC.

2 On Tech 2 select:

Body / Instrument / Miscellaneous Tests / Input overrides /

Alternator.

3 Select Tell Tale test and conduct the test as directed by soft

keys at the bottom of the Tech 2 screen then select Warning test

and repeat.

Does the Alternator animated symbol display and the, Alternator

warning LED in the instrument cluster illuminate?

Refer to Section

6C1-2 Engine

Management – V6 –

Diagnostics

Replace the

instrument cluster;

refer to Section 1A3

Instrument Panel

and Console

When all diagnosis and repairs are completed, clear all DTCs and check the system for correct operation

Instrumentation Page 12C – 145

Page 12C – 145

6.12 Alternator Warning – V8

Operation

The Alternator Warning indicator is only illuminated for 6 seconds after the ignition is switched to the on position with the

engine not running.

If the Alternator data to the instrument cluster via the secondary UART bus is active and the engine speed has equalled

or exceeded 150 r.p.m for at least 5 seconds, the indicator is illuminated and / or the animated icon is displayed on the

MFD. The animated icon is only displayed if the engine is running, and remains displayed until the trip computer switch

MODE button is pressed, at which point the MFD reverts back to the previously displayed trip computer screen.

Circuit Description

The alternator has two signal wires connected to the PCM. These form the monitoring components of the alternator

system.

The PCM monitors the voltages produced on these lines, and if the alternator should be seen by the PCM to be

malfunctioning, it sends the Alternator Fault warning message to the PIM via the GM LAN, The PIM converts the data to

UART protocol and sends it to the BCM which is then sent to the instrument cluster via the secondary UART bus.

Refer to 3 Wiring Diagrams and Connectors to aid in diagnosis.

Test Description

The following numbers refer to the step numbers in the diagnostic table:

2 Checks if the Alternator warning LED is functioning.

3 Checks the MFD Alternator animation using Tech 2.

Diagnostic Table Notes

1 For Tech 2 information, refer to 2 Tech 2 Information.

Alternator Warning – V8 Diagnostic Table

Step Action Yes No

1 Has the diagnostic system check been performed?

Go to Step 2

Refer to

4.1 Diagnostic

System Check

2 Turn the ignition from off to on.

Does the alternator warning indicator illuminate for 6 seconds? System serviceable Go to Step 3

3 1 Connect the Tech 2 to the DLC.

2 On Tech 2 select:

Body / Instrument / Miscellaneous Tests / Input overrides /

Alternator.

3 Select Tell Tale test and conduct the test as directed by soft

keys at the bottom of the Tech 2 screen then select Warning test

and repeat.

Does the Alternator animated symbol display and the, Alternator

warning LED in the instrument cluster illuminate?

Refer to Section

6C3-2 Powertrain

Management – GEN

III V8 – Diagnostics

Replace the

instrument cluster;

refer to Section 1A3

Instrument Panel

and Console

When all diagnosis and repairs are completed, clear all DTCs and check the system for correct operation.

Instrumentation Page 12C – 146

Page 12C – 146

6.13 Trip Computer Switch

Operation

The trip computer switch assembly has its four switches and internal resistors connected across the switch sensing

circuits. When any one of the four switches are pressed, the instrument cluster is able to detect a switch has been

pressed, due to varying voltage inputs.

Circuit Description

The resistance presented to the instrument cluster between terminals P3 – X1 pin 31 and P3 – X1 pin 18 and is

dependent on which button has been pressed on the trip computer switch. The instrument cluster provides a technical

feature whereby each switch’s voltage that is presented to the instrument cluster when pressed can be read directly on

the MFD when in self diagnostic mode, refer to 4.2 Instrument Cluster Self Diagnostics.

Refer to 3 Wiring Diagrams and Connectors to aid in diagnosis.

Test Description

The following numbers refer to the step numbers in the diagnostic table:

2 Checks if the switch voltage levels in self-test mode.

3 Checks if any DTCs are set using Tech 2.

4 Checking the status and functionality of the trip computer switches using Tech 2.

5-7 Checks the switch function using a multimeter.

8 Checks the switch harness wiring for continuity.

Diagnostic Table Notes

1 For Tech 2 information, refer to 2 Tech 2 Information.

Trip Computer Switch Diagnostic Table

Step Action Yes No

1 Has the diagnostic system check been performed?

Go to Step 2

Refer to

4.1 Diagnostic

System Check

2 1 Put the instrument cluster into Self Diagnostic Mode Operation

by holding the MODE and SET buttons while turning the ignition

on.

NOTE

For further information on Self Diagnostic Mode, refer to

4.2 Instrument Cluster Self Diagnostics.

2 Press the Mode switch several times to display the switch

voltage screen.

3 Hold each button for more than 2 seconds while noting the

button voltages being displayed.

Do the MFD values correspond to those recorded in the table below?

• MODE 4.09 V ± 0.19 V

• SET 4.515 V ± 0.235 V

• UP 3.405 V ± 0.145 V

• DOWN 2.57 V ± 0.14 V System serviceable Go to Step 3

Instrumentation Page 12C – 147

Page 12C – 147

Step Action Yes No

3 1 Connect Tech 2 to the DLC.

2 On Tech 2 select:

Body / Instrument / Diagnostic Trouble Codes / Read DTC

Information.

Is DTC 21 or DTC 22 set?

Replace the trip

computer switch,

refer to Section 1A3

Instrument Panel

and Console Go to Step 4

4 1 On Tech 2 select:

Data Display / Inputs.

2 Scroll to the Trip Computer Switch status, then Press the trip

computer switch DOWN button while watching the button status

on the Tech 2 screen.

3 Repeat for the remaining trip computer switch buttons.

Does the Tech 2 display the switch status as ON when each button is

pressed?

Replace the

instrument cluster;

refer to Section 1A3

Instrument Panel

and Console Go to Step 5

5 1 Turn the ignition off.

2 Remove the trip computer switch, refer to Section 1A3

Instrument Panel and Console.

3 Using a multimeter set to measure resistance, test the switch as

detailed in 3 Wiring Diagrams and Connectors.

Is the switch serviceable? Go to Step 6

Replace the trip

computer switch,

refer to Section 1A3

Instrument Panel

and Console

6 1 Remove the instrument cluster, refer to Section 1A3 Instrument

Panel and Console.

2 Using a multimeter set to measure resistance, probe between

connectors P3 – X1 pin 31 and S237 – X1 pin 1.

Does the multimeter indicate continuity? Go to Step 7 Repair or replace

circuit 844

7 Using a multimeter set to measure resistance, probe between

connectors P3 – X1 pin 18 and S237 – X1 pin 5.

Does the multimeter indicate continuity?

Replace the

instrument cluster;

refer to Section 1A3

Instrument Panel

and Console Repair or replace

circuit 897

When all diagnosis and repairs are completed, clear all DTCs and check the system for correct operation.

Instrumentation Page 12C – 148

Page 12C – 148

6.14 Instrument Illumination

Operation

The slider on the headlamp switch controls the dial, pointer and MFD illumination. Moving the slider varies the input

voltage to the body control module (BCM), which in turn sends a software value of the illumination level to the instrument

cluster via the secondary UART bus. The instrument cluster interprets the illumination level, and controls the illumination

level of the instrument accordingly.

Circuit Description

The headlamp switch incorporates a variable intensity instrument cluster illumination control (slider) and a four-position

switch (or five position with fog lamps) for Off, Park, Headlamps, Auto Headlamps On and fog lamps switch mode.

With the switch in the off position (open circuit), the MFD (and side LCD’s for triple-window cluster) are set at maximum

backlighting. When the switch is in the Park, Headlamp or Auto positions, a 12-volt signal is supplied to the instrument

cluster from the park lamp relay and the MFD (and side LCDs for triple-window cluster) are set to a reduced level of

backlighting.

The dial and pointer illumination are controlled by the slider control on the headlamp switch. The slider varies an input

voltage to the BCM, which in turn transmits an illumination level to the instrument cluster via the secondary UART bus.

Refer to 3 Wiring Diagrams and Connectors to aid in diagnosis.

Test Description

The following numbers refer to the step numbers in the diagnostic table:

2-4 Checks if the illumination is operational.

5 Checks if any DTCs are set using Tech 2.

8 Checks the illumination supply voltage to the instrument cluster.

9 Checks the illumination level using Tech 2.

Diagnostic Table Notes

1 For Tech 2 information, refer to 2 Tech 2 Information.

Instrument Illumination Diagnostic Table

Step Action Yes No

1 Has the diagnostic system check been performed?

Go to Step 2

Refer to

4.1 Diagnostic

System Check

2 Turn the ignition on.

Is the MFD (and side LCD’s for triple-window cluster) backlit? Go to Step 3

Check fuse F13 in

X129

Go to Step 4

3 With the ignition in the ON position, set the headlamp switch to the

PARK position.

Is the MFD (and side LCD’s for triple-window cluster) set to a reduced

backlight? Go to Step 4 Go to Step 5

4 With the ignition in the ON position and the headlamp switch in the

PARK position, vary the slider position to vary the dial and pointer

illumination level.

Does the dial and pointer illumination level vary? System serviceable Go to Step 9

Instrumentation Page 12C – 149

Page 12C – 149

Step Action Yes No

5 1 Connect Tech 2 to the DLC.

2 Check that the ignition is in the ON position and the headlamp

switch is in the PARK position.

3 On Tech 2 select:

Body / Instrument / Data Display / Instrument.

4 Scroll to the Park Lamp Switch Input signal.

Does the Tech 2 display ON?

Replace the

instrument cluster;

refer to Section 1A3

Instrument Panel

and Console Go to Step 6

6 Check that the ignition is in the ON position and the headlamp switch

is in the PARK position.

Do the park lamps operate? Go to Step 7

Refer to Section

12J Body Control

Module for further

diagnosis

7 Check the condition of the instrument cluster illumination Fuse F11.

Is the Fuse serviceable? Go to Step 8 Replace fuse F11

8 1 Remove the instrument cluster, refer to Section 1A3 Instrument

Panel and Console.

2 Check that the ignition is in the ON position and the headlamp

switch is in the PARK position.

3 Using a multimeter set to measure voltage, probe between

connector P3 – X1 pin 19 and a known ground.

Does the multimeter indicate battery voltage?

Replace the

instrument cluster;

refer to Section 1A3

Instrument Panel

and Console Repair or replace

circuit 32

9 1 Connect Tech 2 to the DLC.

2 Check that the ignition is in the ON position and the headlamp

switch is in the PARK position.

3 On Tech 2 select:

Miscellaneous Tests / Illumination / Pointers.

Use the Up and Down soft keys to increase and decrease the

illumination level of the pointers.

4 On Tech 2 select:

Miscellaneous Tests / Illumination / Dials.

Use the Up and Down soft keys to increase and decrease the

illumination level of the dials.

Does the illumination vary in both instances?

Refer to Section

12J Body Control

Module for further

diagnosis

Replace the

instrument cluster;

refer to Section

1A3 Instrument

Panel and Console

When all diagnosis and repairs are completed, clear all DTCs and check the system for correct operation.

Instrumentation Page 12C – 150

Page 12C – 150

6.15 Brake Fail / Park Brake Warning

Brake Fail / Park Brake Warning

Operation

All vehicles are equipped with switches that sense the state of the braking system and whether the driver has applied the

handbrake. Whenever the braking system fails or the handbrake is applied, a warning indicator illuminates within the

instrument cluster together with an MFD message.

Vehicles fitted with Electronic Stability Program (ESP) require to know if the handbrake has been applied, as this will

affect the handling performance of the vehicle. A separate handbrake circuit to the ESP module has been provided to

accommodate this facility.

Circuit Description

For wiring diagrams and connector charts, refer to 3 Wiring Diagrams and Connectors.

The brake warning indicator is illuminated when the park brake has been applied and its switch is on, or when the vehicle

speed is greater than 8 km/h and there is a brake warning. The brake warning indicator illuminates and displays an

animated icon on the MFD. The exclamation mark in the centre of the icon flashes until the MODE button on the trip

computer switch is pressed. The MFD then reverts to the previously displayed trip computer screen. Should the vehicle’s

brake system fail, the same sequence of warning messages (and audible alarms) will be presented to the driver.

Brake Fluid Warning

Operation

The brake fluid warning uses the handbrake warning light to indicate that there is a hydraulic problem in the braking

system.

A fault occurring in the Electronic Brake Distribution System also uses this warning message.

Circuit Description

In vehicles that have an ESP module the signal is sent via the GM LAN to the PIM that in turn converts the data to UART

protocol and sends it to the BCM (X2 pin 5 circuit 800) it is then transferred to the instrument cluster via the secondary

UART bus (X1 pin 2 circuit 1061).

Refer to 3 Wiring Diagrams and Connectors to aid in diagnosis.

Test Description

The following numbers refer to the step numbers in the diagnostic table:

2-4 Checks if the brake fail warning is operational.

5 Checks if the brake-warning indicator illuminates and the MFD animated icon is displayed.

6 Checks the status of the park brake fail warning signal using Tech 2.

7 Checks the operation of the brake switch.

8-9 Checks the harness from the brake pressure switch to the instrument cluster.

Diagnostic Table Notes

1 Refer to Section 12J Body Control Module for further diagnosis.

2 For Tech 2 information, refer to 2 Tech 2 Information.

Instrumentation Page 12C – 151

Page 12C – 151

Brake Fail / Park Brake Warning Diagnostic Table

Step Action Yes No

1 Has the diagnostic system check been performed?

Go to Step 2

Refer to

4.1 Diagnostic

System Check

2 1 Turn the ignition on.

2 Ensure that the park brake is engaged.

Does the brake-warning indicator illuminate? Go to Step 3 Go to Step 5

3 With the ignition in the ON position, release the park brake.

Does the Brake Warning indicator extinguish? Go to Step 4 Go to Step 8

4 Drive the vehicle at a speed greater than 8 km/h.

In the event of a brake warning, does the brake warning indicator

illuminate and is the MFD animated icon displayed?

The warning

indicator is

serviceable.

There is a problem

with the brakes,

refer to Section 5A

Service and Park

Braking System Go to Step 9

5 1 Connect Tech 2 to the DLC.

2 Check that the ignition is in the ON position.

3 On Tech 2 select:

Body / Instrument / Miscellaneous Tests / Input Overrides /

Park Brake and Brake Fail.

Conduct the test as directed by the soft keys at the bottom of the

Tech 2 screen.

Does the brake warning indicator illuminate and is the MFD animated

icon displayed? Go to Step 6

Replace the

instrument cluster;

refer to Section 1A3

Instrument Panel

and Console

6 1 Check that the ignition is in the ON position and the park brake

is engaged.

2 On Tech 2 select:

Data Display / Instrument.

3 Scroll to the Park Brake and Brake Fail Input signal.

Does Tech 2 display the status of the Park Brake and Brake Fail Input

signal as ON?

Replace the

instrument cluster.

Refer to Section

1A3 Instrument

Panel and Console Go to Step 7

7 1 Check that the ignition is in the ON position.

2 Using a jumper lead, back probe connector S36 – X1 pin 1 and a

known ground.

Does the Brake Warning indicator illuminate?

Replace defective

brake fluid switch,

refer to Section 5A

Service and Park

Braking System Go to Step 8

8 1 Chock the wheels.

2 Remove the instrument cluster, refer to Section 1A3 Instrument

Panel and Console.

3 Release the park brake.

4 Using a multimeter set to measure resistance, probe between

connector P3 – X1 pin 15 and a known ground.

Does the multimeter indicate continuity?

Repair or replace

circuit 33. If no fault

found with circuit 33,

check for a

defective park brake

switch, refer to

Section 5A, Service

and Park Braking

System

Replace the

instrument cluster,

refer to Section 1A3

Instrument Panel

and Console

9 1 Remove the instrument cluster, refer to Section 1A3 Instrument

Panel and Console.

2 Chock, the vehicle wheels then release the park brake.

3 Using a multimeter set to measure resistance, probe between

connectors P3 – X1 pin 15 and S36 – X1 pin 1.

Does the multimeter indicate continuity?

Check for a

defective brake fluid

switch; refer to

Section 5A Service

and Park Braking

System Repair or replace

circuit 33

When all diagnosis and repairs are completed, clear all DTCs and check the system for correct operation.

Instrumentation Page 12C – 152

Page 12C – 152

6.16 Speedometer Diagnosis

NOTE

There may be a mismatch of ± 2 km/h when the

MFD digital speedometer readout is compared to

the analogue speedometer reading. This is within

design specifications.

Circuit Description – V6

The vehicle speed sensor is located in the transmission and generates vehicle speed pulses then sends them to the

ECM then via circuit 5197. The ECM then sends this signal to the instrument cluster P3 – X1 pin 29.

Refer to 3 Wiring Diagrams and Connectors to aid in diagnosis.

Circuit Description – V8

The vehicle speed sensor is located in the transmission and generates vehicle speed pulses then sends them to the

PCM then via circuit 5197 to the instrument cluster P3 – X1 pin 29.

Refer to 3 Wiring Diagrams and Connectors to aid in diagnosis.

Test Description

The following numbers refer to the step numbers in the diagnostic table:

3 Road test the vehicle.

5 Checks the speedometer using Tech 2.

7 Checks the accuracy of the speedometer reading using Tech 2.

8 Compares the speedometer reading with the Tech 2 display under actual driving conditions.

Diagnostic Table Notes

1 For Tech 2 information, refer to 2 Tech 2 Information.

2 Refer to 7.2 Programming. For speedometer PPK values.

Speedometer Diagnostic Table

Step Action Yes No

1 Has the diagnostic system check been performed?

Go to Step 2

Refer to

4.1 Diagnostic

System Check

2 During self-test mode, does the speedometer display 100 km/h?

Go to step 3

Replace the

instrument cluster

refer to Section

1A3 Instrument

Panel and Console

3 Does the speedometer respond when the vehicle is travelling at more

than 2 km/h? Go to Step 4 Go to Step 5

4 Does the speedometer display the correct speed of the vehicle? System serviceable Refer to 7.2

Programming

Instrumentation Page 12C – 153

Page 12C – 153

Step Action Yes No

5 1 Connect Tech 2 to the DLC.

2 Turn the ignition on.

3 On Tech 2 select:

Body / Instrument / Miscellaneous Tests / Gauge Control

Tests / Speedometer.

Conduct the test as directed by the soft keys at the bottom of

the Tech 2 screen.

Does the speedometer pointer move? Go to Step 6

Replace the

instrument cluster

refer to Section

1A3 Instrument

Panel and Console

6 1 Check that the ignition is in the Off position.

2 Disconnect the PCM connector A84.

3 Using a multimeter set to measure resistance, probe circuit

5197 for the following:

• Open circuit.

• Short to ground.

• Short to battery.

Is the circuit serviceable?

For V6 engine,

refer to Section

6C1 Engine

Management – V6

For GEN III V8

engine, refer to

Section 6C3

Powertrain – GEN

III V8 Repair or replace

circuit 5197

7 On Tech 2 select:

Miscellaneous Tests / Input Overrides.

Does the Speedometer reading increment to the same readings as

displayed on Tech 2 and the MFD? Go to Step 8

Replace the

instrument cluster

refer to Section

1A3 Instrument

Panel and Console

8 1 On Tech 2 select:

Data Display / Instrument.

2 Scroll to the Vehicle Speed.

3 Road test the vehicle.

Does the speedometer pointer reading match the Tech 2 display

within the specified values?

• 60 km/h = –0 / +2

• 100 km/h =–0 / +2

• 160 km/h =–0 / +3

For V6 engine,

refer to Section

6C1 Engine

Management – V6

For GEN III V8

engine, refer to

Section 6C3

Powertrain – GEN

III V8

Program the PPK

values, refer to 7.2

Programming

When all diagnosis and repairs are completed, clear all DTCs and check the system for correct operation.

Instrumentation Page 12C – 154

Page 12C – 154

6.17 Tachometer Diagnosis

Circuit Description – V6

The crankshaft position sensor generates AC pulses as the engine rotates sending them to the ECM, which converts

them to DC pulses then sends them to the instrument cluster. The tachometer counts the number of pulses to determine

the speed (r.p.m) of the engine.

Refer to 3 Wiring Diagrams and Connectors to aid in diagnosis.

Circuit Description – V8

The crankshaft position sensor generates AC pulses as the engine rotates sending them to the PCM, which converts

them to DC pulses then sends them to the instrument cluster. The tachometer circuit counts the number of pulses to

determine the speed (r.p.m) of the engine.

Refer to 3 Wiring Diagrams and Connectors to aid in diagnosis.

Test Description

The following numbers refer to the step numbers in the diagnostic table:

2 Use the instrument cluster self-diagnostic mode to drive the tachometer.

5 Checks the tachometer using Tech 2.

6 Checks the tachometer drive frequency using a multimeter and Tech 2.

7 Checks the accuracy of the tachometer readout using Tech 2.

8 Comparing the tachometer reading with the Tech 2 display with the engine running.

Diagnostic Table Notes

1 For Tech 2 information, refer to 2 Tech 2 Information.

Tachometer Diagnostic Table

Step Action Yes No

1 Has the diagnostic system check been performed?

Go to Step 2

Refer to

4.1 Diagnostic

System Check

2 During self-test mode, does the tachometer display 3000 r.p.m?

Go to step 3

Replace the

instrument cluster

refer to Section

1A3 Instrument

Panel and Console

3 Start the engine.

Does the tachometer respond when increasing the engine r.p.m? Go to Step 4 Go to Step 5

4 Does the tachometer give an accurate r.p.m reading of the engine? System serviceable Go to Step 6

5 1 Connect Tech 2 to the DLC.

2 Turn the ignition on.

3 On Tech 2 select:

Body / Instrument / Miscellaneous Tests / Gauge Control

Tests / Tachometer.

Conduct the test as directed by the soft keys at the bottom of

the Tech 2 screen.

Does the tachometer pointer move? Go to Step 7

Replace the

instrument cluster

refer to Section

1A3 Instrument

Panel and Console

Instrumentation Page 12C – 155

Page 12C – 155

Step Action Yes No

6 1 Turn the ignition off.

2 Remove the instrument cluster, refer to Section 1A3 Instrument

Panel and Console.

3 Using a multimeter set to measure Frequency, measure

between connector P3 – X1 pin 30, and a known ground.

4 On Tech 2 select:

Engine / Data display / Engine data1.

5 Start the engine and monitor the r.p.m with Tech-2.

Is the frequency reading as follows?

• 23.4 Hz at 700 r.p.m,

• 50 Hz at 1500 r.p.m

• 83.5 Hz at 2500 r.p.m?

Tolerance, ±1.7 Hz

Replace the

instrument cluster

refer to Section 1A3

Instrument Panel

and Console

For V6 engine,

refer to Section

6C1 Engine

Management – V6

For V8 engine,

refer to Section

6C3 Powertrain –

GEN III V8

Go to Step 7

7 1 On Tech 2 select:

Instrument / Miscellaneous Tests / Input Overrides / Engine

Speed.

2 Conduct the test as directed by the soft keys at the bottom of

the Tech 2 screen.

Is the tachometer accurate to ±50 r.p.m between 500 r.p.m and

6500 r.p.m? Go to Step 8

Replace the

instrument cluster

refer to Section

1A3 Instrument

Panel and Console

8 1 On Tech 2 select:

Diagnostics / display / Engine data1.

2 Scroll to the Engine Speed signal.

3 Start the engine and vary the engine speed.

Does the tachometer pointer reading match the Tech 2 display within

the specified value?

Accurate to ±50 r.p.m between 500 r.p.m and 6500 r.p.m?

For V6 engine,

refer to Section

6C1 Engine

Management – V6

For V8 engine,

refer to Section

6C3 Powertrain –

GEN III V8

Replace the

instrument cluster

refer to Section

1A3 Instrument

Panel and Console

When all diagnosis and repairs are completed, clear all DTCs and check the system for correct operation.

Instrumentation Page 12C – 156

Page 12C – 156

6.18 Coolant Temperature Gauge Diagnostic

Circuit Description – V6

The ECT Sensor (Engine Coolant Temperature) is a thermistor mounted in the engine coolant stream. Low engine

coolant temperature produces a high sensor resistance, while high engine coolant, temperature causes a low sensor

resistance.

The sensor sends voltage changes to the ECM, which then converts it to data and sends it via the GM LAN bus to the

PIM. The PIM converts the GM LAN data to UART protocol and sends this to the BCM. The instrument cluster receives

the data via the BCM secondary UART bus.

Refer to 3 Wiring Diagrams and Connectors to aid in diagnosis.

Circuit Description – V8

The ECT Sensor (Engine Coolant Temperature) is a thermistor mounted in the engine coolant stream. Low engine

coolant temperature produces a high sensor resistance, while high engine coolant, temperature causes a low sensor

resistance.

The sensor sends voltage changes to the PCM, which then converts it to data and sends it via the class 2 data bus to the

PIM. The PIM converts the class 2 data to UART protocol and sends this to the BCM. The instrument cluster receives the

data via the BCM secondary UART bus.

Refer to 3 Wiring Diagrams and Connectors to aid in diagnosis.

Test Description

The following numbers refer to the step numbers in the diagnostic table:

2 Use the instrument cluster self diagnostic mode to drive the temperature gauge.

4 Commanding the temperature gauge using Tech 2.

Diagnostic Table Notes

1 For Tech 2 information, refer to 2 Tech 2 Information.

Coolant Temperature Gauge Diagnostic Table

Step Action Yes No

1 Has the diagnostic system check been performed?

Go to Step 2

Refer to

4.1 Diagnostic

System Check

2 Did the temperature gauge respond during the self diagnostic test in

step 1? Go to step 3 Go to Step 4

3 Turn the ignition on.

Does the temperature gauge pointer move past the C position and

display the accurate coolant temperature? System serviceable Go to Step 4

4 1 Connect Tech 2 to the DLC.

2 Turn the ignition on.

3 On Tech 2 select:

Body / Instrument / Miscellaneous Tests / Gauge Control

Tests / Temperature Gauge.

Conduct the test as directed by the soft keys at the bottom of

the Tech 2 screen.

Does the coolant temperature gauge pointer move to the correct

position when commanded by Tech 2?

For V6 engine,

refer to Section

6C1 Engine

Management – V6

For GEN III V8

engine, refer to

Section 6C3

Powertrain – GEN

III V8

Replace the

instrument cluster

refer to Section 1A3

Instrument Panel

and Console

When all diagnosis and repairs are completed, clear all DTCs and check the system for correct operation.

Instrumentation Page 12C – 157

Page 12C – 157

6.19 Fuel Level Gauge Diagnosis

Circuit Description – V6

The fuel sender unit sends its information to the ECM. The ECM converts this information to data and sends it via the GM

LAN to the PIM. The data is then converted by the PIM to UART protocol and sent on the UART bus to the BCM. The

instrument cluster receives the data via the BCM secondary UART bus.

Refer to 3 Wiring Diagrams and Connectors to aid in diagnosis.

Circuit Description – V8

The fuel sender unit sends its information to the PCM. The PCM converts this information to data and sends it via the GM

LAN to the PIM. The data is then converted by the PIM to UART protocol and sent on the UART bus to the BCM. The

instrument cluster receives the data via the BCM secondary UART bus.

Refer to 3 Wiring Diagrams and Connectors to aid in diagnosis.

Test Description

2 Use the instrument cluster self diagnostic mode to drive the fuel gauge.

4 Commanding the fuel gauge using Tech 2.

Diagnostic Table Notes

1 To replace the instrument cluster refer to 1A3 Instrument Panel and Console.

2 Refer to Section 8A1 Fuel system and Section 12P Wiring Diagrams.

3 For instrument cluster Tech 2 information, refer to 1.4 Ignition On System Check.

Fuel Level Gauge Diagnostic Table

Step Action Yes No

1 Has the diagnostic system check been performed?

Go to Step 2

Refer to

4.1 Diagnostic

System Check

2 Did the fuel gauge respond during the self-test in step 1? Go to step3 Go to Step 4

3 Turn the ignition on.

After a settling period, does the fuel level gauge pointer move and

display the accurate fuel level? System serviceable Go to Step 4

4 1 On Tech 2 select:

Miscellaneous Tests / Gauge Control Tests / Fuel Gauge.

2 Conduct the test as directed by the soft keys at the bottom of

the Tech 2 screen.

Does the fuel gauge pointer move to the correct position when

commanded?

Check the fuel

sender unit refer to

Section 8A1 Fuel

Tank

Replace the

instrument cluster

refer to Section

1A3 Instrument

Panel and

Console

When all diagnosis and repairs are completed, clear all DTCs and verify correct operation

Techline

Instrumentation Page 12C – 158

Page 12C – 158

6.20 Serial Data Communication

General Information

For serial data information, refer to the following

• Section 6E1Powertrain Interface Module – V6.

• Section 6E3 Powertrain Interface Module – GEN III V8.

Instrumentation Page 12C – 159

Page 12C – 159

7 Service Operations

ATTENTION

All fasteners are important attaching parts as they affect the performance of vital components and/or could

result in major repair expense. Where specified, fasteners must be replaced with parts of the same part

number or a GM approved equivalent. Do not use fasteners of an inferior quality or substitute design.

Torque values must be used as specified during reassembly to ensure proper retention of all components.

Fastener torque wrench specifications may be preceded by the following symbols:

 Fasteners must be replaced after loosening.

 Vehicle must be at curb height before final tightening.

 Fasteners either have microencapsulated sealant applied or incorporate a mechanical thread lock and

should only be re-used once. If in doubt, replacement is recommended.

If one of these symbols preced es a fastener torque w rench specification, the recommen dation regarding that

fastener must be adhered to.

7.1 Instrument Cluster Removal And

Reinstallation

Trim Removal and Reinstallation

Refer to, Section 1A3 Instrument panel and Console.

Instrument Removal and Reinstallation

Refer to, Section 1A3 instrument Panel and Console.

Sensor Removal and Reinstallation

Refer to:

• Section 2C HVAC Climate Control (Manual A/C) Removal and Installation.

• Section 2F Occupant Climate Control (Auto A/C) – Removal and Installation.

Trip Computer Switch Removal and Reinstallation

Refer to, Section 1A3 instrument Panel and Console.

Trip Computer Switch Testing

With a multimeter set to measure resistance, check the resistance of the trip computer switch contacts using the following

table, If resistance is not as specified at any switch position, replace the switch assembly.

Function / Button Pressed Switch Contacts Resistance Reading

MODE 1 and 5 20 KΩ

SET 1 and 5 40.2 KΩ

UP 1 and 5 10 KΩ

DOWN 1 and 5 4.99 KΩ

ILLUMINATION 3 and 7 Continuity

Instrumentation Page 12C – 160

Page 12C – 160

7.2 Programming

Tech 2 Instrument Cluster Configuration.

If a replacement cluster has been fitted to a vehicle and requires to be programmed, the vehicle type must first be

selected followed by the country and then the engine type. The engine type is required only for some countries and that is

highlighted below. The original odometer reading, together with other important vehicle parameters, must be programmed

into the replacement instrument cluster.

NOTE

When an engine type has been selected, the

Tacho Pulses Per Revolution (PPR) value for the

vehicle is automatically loaded into the cluster at

this time. This enables Tech 2 to set up the

parameters that are required legally for that

country without the dealer’s technician

inadvertently entering in an incorrect value.

Programming

There are two parts to the cluster software requiring to be programmed. One section is the Police Speedo Calibration (if

selected) and the other section is the Fuel Code file.

Police Speedo Calibration

To enter this calibration mode, the cluster must have the Police Mode enabled first. Tech 2 is then able to access the

software adjustment values, which adjusts the percentage of the nominal PPK value so that the speedometer can be

tuned on the dynamometer for the Police.

Fuel Gauge Calibration

This sets the correct parameters for the gauge to give an accurate reading of the fuel tank level.

Configuration

1 Provides details of the instrument clusters current configuration.

2 To modify any item, select the item using the Up and Down arrows and press the modify soft key or the enter key

and the appropriate screen will be displayed.

Odometer Reset

It is only possible to program the odometer reading on an instrument once the TIS approval (enable programming) has

been obtained and no more than 100km has been registered on the odometer.

Speedometer Calibration

1 Speedometer calibration is only possible when police mode has been enabled.

2 On Tech 2 select:

Program / speedometer calibration.

Reset Service Interval

1 On Tech 2 select:

Program / Reset Service Interval.

2 If a Service Reset is not required or the distance to the next service is more than 1000 km, Tech 2 displays a

service reset is not possible. Press the confirm soft key to return to the Program menu.

Reset Trip Computer Settings

1 On Tech 2 select:

Program / Reset Trip Computer Settings.

2 Press the Reset soft key to reset the trip computer settings or press the abort soft key to abandon the process.

Instrumentation Page 12C – 161

Page 12C – 161

Fuel Calibration Settings

Fuel Code file

A fuel code file database that provides a vehicle’s fuel sender Part Number and its Index and software Version Number is

available to dealers for them to input the correct fuel calibration data into the instrument cluster to suit the vehicle. The

code file is predefined and not adjustable by the dealer. Select the correct vehicle configuration from the following table.

NOTE

Updated versions of this table will be available to

Holden dealers as required.

Body Style P/No. Index Version

Sedan 92166016 20 2

Fuel Gauge Calibration

Using Tech 2 select:

Body / Instrument / Program / Fuel Gauge Calibration.

When an instrument cluster is replaced, the Fuel Calibration Part Number is to be entered using Tech 2. This identifies

the fuel tank size and fuel sender type.

The Index number identifies the fuel calibration part number, which is associated with the particular vehicle configuration.

The Version number identifies the software version. Only the Index number can be changed.

Fuel Calibration Details

1 On Tech 2 select:

Program / Fuel Gauge Calibration.

2 The Code Index Number and the Code Version Number are displayed. To change the Code Index Number, press

the Modify soft key. To exit without making a change, press the Okay soft key.

3 Use the Up and Down arrow keys to highlight a vehicle type and press the Enter key.

4 Follow the Tech 2 screen prompts to complete the programming.

5 Enter the instrument cluster Self Diagnostic Mode. Press the trip computer switch MODE button until the Fuel

Calibration Part Number is displayed on the MFD. Verify that the Fuel Calibration Part Number displayed is correct.

Configuration

1 On Tech 2select:

Program / Configuration.

2 The Configuration Menu will be displayed showing the current vehi cle configuration.

3 To modify any item select the item using the Up, Down arrows, and press the Modify soft key or the Enter key. The

appropriate screen will be displayed.

Country

1 Use the Up and Down arrow keys to highlight a country in the menu.

2 When selected, press the Modify soft key to advance to the Engine Type selection screen. Note that if Brazil is

selected, pressing the Modify soft key will return to the Configuration Menu, as there is only one engine

configuration for this country.

3 To exit the Country screen without changing the selection shown, press the Exit key to advance to the Engine Type

selection screen.

Instrumentation Page 12C – 162

Page 12C – 162

Engine Type

1 Use the Up and Down arrow keys to highlight the engine type in the menu.

2 When selected, press the Enter key to return to the Configuration Menu.

3 To return to the Configuration Menu without changing the selection shown, press the Exit key.

Speedometer Pulses

1 Select the speedometer pulses per kilometre for the correct tyre size from the following table.

2 If necessary, use the Left and Right arrow keys to scroll across the number displayed on the Tech 2 screen and

modify using the numeral keys.

3 When selected, press the Enter key to return to the Configuration Menu.

4 To return to the Configuration Menu without changing the selection shown, press the Exit key.

Vehicle Speed PPK Values

V8 4-speed Auto

Vehicle Configuration

Body Style Engine Transmission Differential Drive

Sedan V8

(LS1)

4 Speed Auto

(MK2 / MD6 / M30 /

M32)

3.07 / 3.08

(G44 / GU4)

Rear Wheel Drive

PPK V

lues

Tyre/wheel Option Code PPK

215/60R16 QFH 6100

225/50R16 QQQ 6400

225/55R16 QXC 6173

235/45R17 QNZ 6210

235/40R18 QUG 6230

225/55R17 QBB 5900

225/50R17 QWI 6100

215/65R15 QHK 6100

215/65R16 QIJ 6900

Instrumentation Page 12C – 163

Page 12C – 163

V6 5-speed Auto

Vehicle Configuration

Body Style Engine Transmission Differential Drive

Sedan V6

(LE0 / LY7 / LW2)

5 Speed Auto

(MX5 / M82)

2.87

(GT9)

Rear Wheel Drive

PPK Values

Tyre/wheel Option Code PPK

205/65R15 QZA/QAH 6100

225/60R15 QWH 6050

215/60R16 QFH 5900

225/50R16 QQQ 6200

225/55R16 QXC 6080

235/45R17 QNZ 6100

235/40R18 QUG 6100

225/55R17 QBB 5800

225/50R17 QWI 6000

215/65R15 QHK 6000

215/65R16 QIJ 5700

SRS Configuration

1 Use the Up and Down arrow keys to highlight the appropriate vehicle SRS configuration in the menu.

2 Configuration of the various SRS systems is as follows:

• A 2-loop system is for left-hand drive vehicles with pretensioners only.

• A 3-loop system is for vehicles with pretensioners and driver’s airbag only.

• A 4-loop system is for vehicles with pretensioners, driver’s airbag and front passenger’s airbag only.

• A 6-loop system is for vehicles with pretensioners, driver’s airbag, front passenger’s airbag and side impact

airbags.

2 When selected, press the Enter key to return to the Configuration Menu.

3 To return to the Configuration Menu without changing the selection shown, press the Exit key.

Transmission Type

1 Use the Up and Down arrow keys to highlight the transmission type in the menu.

2 When selected, press the Enter key to return to the Configuration Menu.

3 To return to the Configuration Menu without changing the selection shown, press the Exit key.

Police Mode

1 Use the Up and Down arrow keys to highlight No / Yes in the menu as required.

2 When selected, press the Enter key to return to the Configuration Menu.

3 To return to the Configuration Menu without changing the selection shown, press the Exit key.

Instrumentation Page 12C – 164

Page 12C – 164

Seat Belt Warning

Select from the Tech 2 soft keys to turn seat belt warning function on or off.

Program Settings

1 Press the Quit soft key to abandon the programming process, or press the Program soft key to initiate the

programming process.

2 Press the Confirm soft key when notified that the programming has been completed successfully.

3 Turn the ignition off and on again to accept the programming changes.

4 and 5 Speed Automatic Transmission

The instrument cluster must be programmed to match the transmission fitted to the vehicle, Either 4 or 5 speed automatic

transmissions are used.

Transmission Programming

1 Fit the instrument cluster; refer to Section 1A3 Instrument Panel and Console.

2 Connect Tech 2 to the DLC.

3 On Tech 2 select:

Body / Instrument / Program / Configuration / Transmission type.

4 Select from the transmission types listed to match the vehicle with the up down arrow keys, then use the Modify soft

key to change the transmission type.

Odometer

NOTE

It is only possible to program the odometer

reading on an instrument cluster once and

the TIS approval (Enable Programming) has been

obtained and on an instrument which presently

reads no more than 100 km, refer to Section 0C

Tech 2 for further details to enable programming.

1 From the Program Menu select Odometer and press the Enter key.

2 Press the Abort soft key to abandon the process, or press the Modify soft key to continue.

NOTE

If TIS approval (Enable Programming) has been

obtained, this message will not appear. If TIS

approval has not been obtained, this message will

appear and programming is not possible, refer to

Section 0C Tech 2 for further details to enable

programming.

3 Use the Left and Right arrow keys to scroll across the number displayed on the Tech 2 screen and modify using

the numeral keys.

4 Press the Enter key to continue.

NOTE

This is the last chance to get the odometer value

correct. Ensure that the value is correct before

proceeding.

Instrumentation Page 12C – 165

Page 12C – 165

5 Check that the odometer value displayed on the Tech 2 screen is correct.

• If the value is incorrect, press the Not Okay soft key to return to the previous screen and enter the correct

value.

• If the value is correct, press the Okay soft key to continue programming.

6 Press the Confirm soft key when notified that the programming has been completed successfully.

7 Turn the ignition off and on again to accept the programming changes.

Speedometer Calibration

NOTE

Speedometer calibration is only possible when

Police Mode has been enabled.

1 On Tech 2 select:

Body / Instrument / Program / Configuration / Speedometer Pulses and press the Enter key.

NOTE

If Police Mode has been enabled, this screen will

not appear. If Police Mode is disabled, this screen

will appear and speedometer calibration is not

possible, refer to 1.6 Trip Computer.

2 Use the Left and Right arrow keys to scroll across the number displayed on the Tech 2 screen and modify using

the numeral keys.

3 Press the Enter key to continue.

4 Press the Confirm soft key when notified that the programming has been completed successfully.

5 Turn the ignition off and on again to accept the programming changes.

Reset Service Interval

1 On Tech 2 select:

Body / Instrument / Program / Reset Service Interval.

NOTE

If a Service Reset is not required or the distance

to the next service is more than 1000 km, Tech 2

displays this screen and a Service Reset is not

possible. Press the Confirm soft key to return to

the Program Menu.

2 Press the Abort soft key to abandon the process, or the Reset soft key to reset the service interval.

3 Press the Confirm soft key when notified that the programming has been completed successfully.

4 Turn the ignition off and on again to accept the programming changes.

Reset Trip Computer Settings

1 On Tech 2 select:

Program / Reset Trip Computer Settings.

2 Press the Abort soft key to abandon the process, or the Reset soft key to reset the service interval.

3 Press the Confirm soft key when notified that the programming has been completed successfully.

4 Turn the ignition off and on again to accept the programming changes.

Instrumentation Page 12C – 166

Page 12C – 166

8 Special Tools

Tool Number Illustration Description Tool Classification

7000086I

TECH 2 DIAGNOSTIC SCAN TOOL

Used for diagnosis of vehicle electrical

system

Previously released.

Mandatory

J35616-A

(KM609)

CONNECTOR TEST ADAPTOR KIT

Used when carrying out electrical

Diagnostic System Checks

Previously released.

Desirable

3588

(J39200)

DIGITAL MULTIMETER

Must have at least 10 MΩ input

impedance and be capable of reading

frequencies

Previously released.

Mandatory