SECTION 12C - INSTRUMENTS, WIPERS/WASHERS

& HORN

CAUTION:

This v ehicle will be equipped with a Supplemental Restraint System (SRS). A SRS

will consist of either seat belt pre-tensioners and a driver's side air bag, or seat

belt pre-tensioners and a driver's and front passenger's side air bags. Refer to

CAUTIONS, Section 12M, before performing any service operation on, or around

any SRS components, the steering mechanism or wiring. Failure to follow the

CAUTIONS could result in SRS deployment, resulting in possible personal injury

or unnecessary SRS system repairs.

CAUTION:

This vehicle may be equipped with LPG (Liquefied Petroleum Gas). In the interests

of safety, the LPG fuel system should be isolated by turning 'OFF' the manual

service valve and then draining the LPG service lines, before any service work is

carried out on the vehicle. Refer to the LPG leaflet included with the Owner's

Handbook for details or LPG Section 2 for more specific servicing information.

1. GENERAL DESCRIPTI ON

Two versions of instrument cluster assemblies are used on VT Series Models, one with a single window trip

computer display and the other with a triple window display.

A trip computer is standard equipment on all VT Series Models.

The instrum ent cluster assem bly on VT Series Models consists of specific style analogue type instrument gauges.

An electronic s peedometer is s ituated to the right of c entre, with the odom eter and trip - odometer readings stored

on the trip com puter. A tachometer is located to the left of centre, an elec tronic tem perature gauge to the left of the

tachometer and a bi-metal fuel gauge to the right of the speedometer. W arning lights are located at the bottom of

the instruments above the odometer.

Instrument cluster illumination is by bulbs located in sockets, which are a twist fit into the rear of the instrument

case.

Located in the centre lower section of the instrument cluster on Executive, S, SS and Acclaim is a single window

Liquid Crystal Display (LCD) trip computer. A triple window trip computer is standard on VT Series Berlina and

Calais Models. Refer to 1.4 TRIP COMPUTER - SINGLE WINDOW TYPE or 1.5 TRIP COMPUTER - TRIPLE

WINDOW TYPE in this Section for an explanation of trip computer functions.

The trip c omputer on both instrum ent cluster ass emblies is operated by means of a switch ass embly located to the

left of the instrument cluster in the instrument facia.

NOTE:

If installing a new trip computer, the original odometer reading must be transferred into the replacement trip

computer. This can be done by authorised Holden dealers using TECH 2.

Techline

Figure 12C-1

Figure 12C-2

Incorporated inside the instrument cluster is an audible warning chime which will sound when one or more of the

following warning lamps illuminate in the warning lamp cluster.

The addition of the audible warning chime f eature is used to em phasise the following conditions, with the tone and

frequency of the chime varied to allow different warnings to be identified by sound.

Over speed - triggered when over speed warning lamp is turned on.

Low fuel level - triggered when low fuel warning lamp is turned on.

High Temp - when high temperature warning lamp is turned on.

Park Brake ON - triggered when park brake warning lamp is turned on and vehicle speed is greater than

approximately 8 km/h.

Low Oil - triggered when low oil lamp is turned on.

SRS Warning - triggered when SRS warning lamp is turned on.

The following chart sets out the chime tones for each warning.

DESCRIPTION TRIGGER FOR AUDIBLE WARNING SEQUENCE OF TONES

OVERSPEED Whenever first time over speed warning light is

turned on except for lamp check. C, F

UNDERSPEED Whenever over speed warning light is turned

off if it is in customise mode. F, C

LOW FUEL Whenever fuel light is turned ‘ON’ or whenever

fuel light starts flashing. G, GO

Repeated four times.

PARK BRAKE Whenever Park Brake warning light is turned

on and vehicle speed is greater than 8 km/h.,

except for lamp check.

C, D, E

Repeated four times.

HIGH TEMP. Whenever High temperature warning light is

first turned on except for lamp check. C, D, E

Repeated four times.

LOW OIL Whenever Low Oil Pressure warning light is

first turned on except for lamp check and

engine is running.

C, D, E

Repeated four times.

SRS WARNING Whenever SRS warning light is first turned on

except for lamp check. D, E, F

Repeated three times.

SET Whenever Set function is used. CI, FI

AUXILIARY Whenever Auxiliary Mode is used. CI, FI

ON/OFF Whenever ON/OFF function is used. CI, FI

MODE CHANGE Whenever displayed mode changes. CI

BUTTON PRESS Whenever button is pressed. FI

The corresponding frequencies of the tones are listed in the following table.

TONE GO C C

SHARP DEFGBICIFI

FREQUENCY

(Hz) 392 523 554 587 659 698 784 988 1046 1397

NOTE:

Should it be necessary to electric weld on any vehicle at any time, removal of the instrument cluster is mandatory.

Failure to do so will result in damage to the instrument gauge circuitry.

On all VT Series Models the clock is incorporated in the radio/cassette player LCD window.

1.1 INSTRUME NT FACIA SWITCHES

Fig. 12C-3 illustrates the various switch locations in the instrument facia for all models.

Figure 12C-3

Two different types of headlamp switches are used, one each for the different type of BCM used in VT Series

Models. Refer to Section 12J-1 BODY CONTROL MODULE for Low Series BCM identification details or

Section 12J-2 BODY CONTROL MODULE for High Series BCM identification details.

The headlamp switch used for the Low Series BCM incorporates a switch for two levels of instrument cluster

illumination (high and low level intensity) and a three-position switch for off, parking and headlamps on.

With High Series BCM, the headlam p s witch incorpor ates a variable intens ity instr um ent cluster illum ination control,

a four-position switch for off, parking and headlamps on and an auto headlamps on switch mode.

For testing of the instrument facia switches, refer to Section 12B, LIGHTING SYSTEM.

Switches for the power antenna up and down control on Calais models are located in the radio control panel.

1.2 WIPERS AND WASHERS

All VT Series Models are fitted with windshield

washers and four speed (m ist, interm ittent, low and

high speed) windshield wipers. Wagons are

equipped with a tailgate washer and single speed

wiper. All washers and wipers are controlled from

the left-hand steering column stalk switch. There

are specific switch assemblies for sedan and

wagon model applications and these are also

dependant on which series of BCM is fitted.

The rear wiper on wagons will usually have an

intermittent sweep. However, on wagons built with

an automatic transmission, the rear wiper will

change to a continuous sweep when reverse gear

is selected.

On vehicles with low series BCM, the wiper

intermittent dwell control circuitry is integrated

inside the BCM.

On vehicles fitted with high series BCM, the module

controls the intermittent dwell time based upon the

vehicle road speed and the s etting of an adjustable

control on the left-hand control stalk.

For details on BCM control of the windshield

wipers and washers, depending on model variant,

refer to either Section 12J-1 LOW SERIES BCM

or Section 12J-2 HIGH SERIES BCM.

Figure 12C-4

The windshield wiper blade arms are the fold back

type assemblies, with a specific arm and blade for

each side of the vehicle. T he arm s are identif ied by

a letter ‘D’ for the drivers side and the letter ‘P’ for

the passengers side on the under side of the arm,

refer F ig. 12C-5. The wiper blades can be identified

by their length; the drivers side wiper arm is 550

mm long and the pass engers side wiper arm is 500

mm long.

A windshield reservoir (sedan) or a common

windshield/tailgate reservoir (wagon) is located in

the right-hand front wheel house. A filler cap is

provided in the engine compartment, adjacent to

the battery to allow filling of the reservoir.

Specific washer pumps are used for sedan and

wagon models. The pump used for wagon models

has dual outlets for the windshield and tailgate.

For the identification of the washer pumps and

reservoir location, refer to Fig. 12C-65 and Fig.

12C-75 in this Section. Figure 12C-5

1.3 HORN

VT Series Executive and Berlina Models have a

single, disc type low note (400 Hz) horn (1)

mounted on the right-hand wheel house panel

behind the bumper facia.

VT Series Calais Models are fitted with trumpet

type high (500 Hz) and low note (400 Hz) horns, the

high note horn (2) is mounted on the right-hand

wheel house panel and the low note horn (3) on the

left-hand front wheel house panel behind the

bumper facia.

Figure 12C-6

The horn/s ar e operated by depressing the steering

wheel horn bar which earths a spring loaded

contact in the steering column switch housing

assembly. This energises a horn relay (located in

the engine compartment relay housing) and the

horn/s sound. The horn assem blies use a solenoid

operated diaphragm to generate sound.

Figure 12C-7

On vehicles with High Series BCM, a thef t deter rent

system horn is fitted inside the engine

compartment, behind the left hand strut tower.

Also located in the engine compartment relay

housing is a theft deterrent s ystem horn relay, refer

Fig. 12C-7.

Figure 12C-8

1.4 TRIP COMPUTER - SINGLE WINDOW TYPE

OPERATION

The buttons for the trip com puter are loc ated to the

left of the gauges. The window for the trip computer

is located directly beneath the gauges.

When the ignition is turned on, the trip computer

will display the same group of functions as when

the ignition was last turned ‘OFF’.

To reset the computer, hold down the Up Button (⇑

⇑⇑

⇑)

and the Down Button (⇓

⇓⇓

⇓) simultaneously. This will

reset all f unctions , with the exception of DIST ANCE

TO EMPTY, OVERSPEED WARNING,

ODOMETER, TIME TO ARRIVAL, DISTANCE TO

ARRIVAL and REMAINING FUEL .

To scroll between the four basic, more commonly

used functions press the MODE button.

NOTE:

If the wrong buttons have been accidentally

pressed, c aus ing the display to show other than the

normal readings, turn the ignition off, then on again. Figure 12C-9

BASIC FUNCTIONS

ODOMETER

The odometer records kilometres travelled since

the vehicle was built.

Figure 12C-10

TRIP

Shows the kilometres travelled from the start of a

particular trip. Reset the reading to zero by

pressing the ⇑

⇑⇑

⇑ and ⇓

⇓⇓

⇓ buttons together when this

window is shown.

Figure 12C-11

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 from city to highway driving.

Figure 12C-12

OVERSPEED

Set the speed not to be exceed. For example, if

driving in a 90 km/h zone, set OVERSPEED to 90

by tapping the ⇑

⇑⇑

⇑ or ⇓

⇓⇓

⇓ buttons. W hen vehicle speed

exceeds 90 km /h the O VERSPEED warning light in

the instrument panel and an audible chime will

warn that set speed has been exceeded. At that

time the trip computer will automatically show

overspeed display, allowing adjustments as

required.

OVERSPEED is adjustable in 5 km/h units and

works at speeds between 20 km/h and 200 km/h.

Tap the ⇑

⇑⇑

⇑ or ⇓

⇓⇓

⇓ buttons as requir ed or hold a button

to scroll quickly to a speed. Brief ly press the ⇑

⇑⇑

⇑ and

⇓

⇓⇓

⇓ buttons together to set the OVERSPEED to the

speed at which the vehicle is currently travelling.

Press and hold both the ⇑

⇑⇑

⇑ and ⇓

⇓⇓

⇓ buttons for at least

2 seconds (when this display is showing) to turn the

OVERSPEED warning on or off.

OVERSPEED presets can also be chosen, refer

OVERSPEED ADJUSTING in this Section.

Figure 12C-13

ADDITIONAL FUNCTIONS

The following details the additional functions that have been provided in the trip computer.

CUSTOMISE MODE

The trip computer features can by customised. W hen the vehicle is stationary, hold down the MODE button while

turning the ignition from OFF to ON. The trip computer then steps you through a series of choices:

CHOICE 1: ODO (odom eter) window shown or skipped. Use the ⇑

⇑⇑

⇑ or ⇓

⇓⇓

⇓ button to select YES or NO as to whether

the odometer will be displayed when the ignition is ON. Note that the odometer will still count in the background

(and will appear when the ignition is OFF), even if the display is set to NO. When the display is flashing on your

selection, press the MODE button to go the next choice.

CHOICE 2: TRIP distance - feature available or sk ipped. Use the ⇑

⇑⇑

⇑ or ⇓

⇓⇓

⇓ button until your choice is flashing. Press

the MODE button to go to choice 3.

CHOICE 3: DISTANCE T O GO - f eature available or s kipped. T his choice will activate an additional s et of displays:

DISTANCE T O GO and T IME TO GO. Use the ⇑

⇑⇑

⇑ or ⇓

⇓⇓

⇓ button until choice is f lashing. Press the MO DE button to go

to choice 4.

CHOICE 4: Adjust DISTANCE T O G O def ault s etting. T he DISTANCE T O GO c an be re set ( when not in c us tomise

mode) by pressing the ⇑

⇑⇑

⇑ and ⇓

⇓⇓

⇓ buttons together. T he distance res ets to 500 km , which is the def ault setting. W hen

in customise mode, choice 4 enables the default setting to be altered up or down with the ⇑

⇑⇑

⇑ or ⇓

⇓⇓

⇓ buttons. When

correct, press the MODE button to go to choice 5.

CHOICE 5: UNDERSPEED chime. OVERSPEED provides a chime when your travelling speed exceeds

OVERSPEED chosen s peed. An additional chime c an be activated to indicated when travelling speed drops below

OVERSPEED. Choice 5 in cus tom ise m ode is to turn the sec ond chim e, the "unders peed" c him e of f or on. Us e the

⇑

⇑⇑

⇑ or ⇓

⇓⇓

⇓ button until your choice is flashing. Press the MODE button to end customise mode.

To activate customise mode again, turn the ignition OFF, then turn ON while holding down the MODE button.

Customise mode will end automatically if vehicle speed exceeds 10 km/h or if the ignition is turned off and on.

ADDITIONAL DISPLAYS

Two additional displays can be activated using

customise mode. DISTANCE TO GO and TIME TO

GO are turned on and off as a set, they cannot be

individually activated.

When activated, press the MODE button to scroll

through the Tr ip Computer displays. T here will now

be six displays instead of four. The new displays

will be slotted in between the TRIP display and the

DISTANCE TO EMPTY display. Customise mode

can be used to deactivate the displays, if required.

DISTANCE TO GO

At the start of a trip an estimate of distance to

arrival (from maps, road signs etc.) should be

made. Tap the ⇑

⇑⇑

⇑ or ⇓

⇓⇓

⇓ buttons until the display

shows estimated trip distance. W hen the vehicle is

driven the trip com puter will constantly update tim e

to arrival, based on changing driving speeds . The ⇑

⇑⇑

⇑

or ⇓

⇓⇓

⇓ buttons can be used to adjust the kilometres

any time this display is shown.

Figure 12C-14

TIME TO GO

Shows time to arrival in hours and minutes.

TIME TO GO is only shown if the DISTANCE TO

GO is more than zero.

Figure 12C-15

Even if DISTANCE TO GO is turned off using

customise mode, it can still be temporarily turned

on by the following quick method:

Press MODE button until the TRIP display is

shown, press the ⇑

⇑⇑

⇑ and ⇓

⇓⇓

⇓ buttons together to zero

the trip display, then increase the distance up by

pressing the ⇑

⇑⇑

⇑ button.

However, when the trip distance reaches zero the

function will turn off again. Use the customise

mode to permanently turn the above displays on.

OVERSPEED A DJUSTING

Instead of adjusting OVERSPEED up and down in

5 km increments, you can set four commonly used

speeds, e.g. 60, 80, 100 and 110.

Hold down the MODE button for 2 seconds when

the OVERSPEED display is shown. T he dis play will

change from normal OVERSPEED to

OVERSPEED PRESET.

Figure 12C-16

P1 is the first preset number, with a default setting

of 60 km/h.

Tap the ⇑

⇑⇑

⇑ button to see the second preset, P2,

which has a default setting of 80 km/h, P3 has a

default setting of 100 km/h and P4 of 110 km/h.

Tap the ⇑

⇑⇑

⇑ or ⇓

⇓⇓

⇓ buttons to m ove between the preset

numbers.

The OVERSPEED PRESET display has now

replaced the normal OVERSPEED display in the

set of displays. Tap the MODE button to scroll

through the other displays.

To change the display back to normal

OVERSPEED, again hold down the MODE button

for 2 seconds while the OVERSPEED PRESET

display is shown.

Figure 12C-17

ALTERING OVERSPEED PRESETS

The default settings of 60, 80, 100 and 110 km/h can be changed for your individual preference.

The vehicle must be standing still when changing OVERSPEED PRESETS. T o alter, ensure the required preset is

showing, e.g. P2 80 km/h. T hen, br ief ly press the ⇑

⇑⇑

⇑ and ⇓

⇓⇓

⇓ buttons together. T he display starts to flash. Us e the ⇑

⇑⇑

⇑ or

⇓

⇓⇓

⇓ button to adjust the setting. When correct, briefly press the ⇑

⇑⇑

⇑ and ⇓

⇓⇓

⇓ buttons together. Each preset can be changed

in this way.

The presets are automatically arranged in ascending order.

One or more presets can be assigned to OFF, by reducing the pr eset down to 0 (OFF). W hen dr iving three or less

presets will be available to choos e from . To turn back on, select the OFF preset (when the vehicle is standing still)

and use the ⇑

⇑⇑

⇑ button to increase the number.

OVERSPEED PRESETS must be altered when the vehicle is standing still. If the ⇑

⇑⇑

⇑ and ⇓

⇓⇓

⇓ buttons are briefly

pressed while driving, the OVERSPEED setting will be changed to the speed at which you are travelling (in multiples

of 5 km/h).

If the ⇑

⇑⇑

⇑ and ⇓

⇓⇓

⇓ buttons are pressed for 2 seconds, either while driving or standing still, OVERSPEED will be turned

completely OFF or ON.

SERVICE DUE

A service reminder message is built into the trip computer.

The reminder message will first appear 1,000 km before the service is actually due, giving time to arrange for the

service to be c arried out. The m essage will be shown on the T rip com puter fo r 10 sec onds whenever the vehic le's

ignition is switched ON or OFF, until the tr ip com puter is reset. When the s ervice is over due the mess age will f lash

for 10 seconds when the ignition is turned ON or OFF.

•SERV 1500 km will show when the vehicle has travelled 1,000 km since it was built.

•SERV 10000 km will show when the vehicle has travelled 9,000 km since it was built

•SERV 20000 km will show when the vehicle has travelled 19,000 km since it was built.

•SERV 30000 km will show when the vehicle has travelled 29,000 km since is was built etc.

When a service is performed on the vehicle, this

reminder should be reset so that it does not prompt

until the next service is nearly due. Otherwise, it will

keep on reminding of a service that is already

complete:

To reset the service reminder message:

1. Turn the ignition OFF.

2. Hold down the ⇑

⇑⇑

⇑ and ⇓

⇓⇓

⇓ mode buttons on the trip computer together.

3. Turn the ignition ON (mode buttons still depressed).

4. Release mode buttons after approximately 3 seconds.

5. Use the mode button to step through trip computer screens until the service due reminder screen appears on

the LCD (usually only one press).

6. Press and hold both the ⇑

⇑⇑

⇑ and ⇓

⇓⇓

⇓ mode buttons until an audible beep is heard (approximately 3 seconds).

7. Turn the ignition OFF.

NOTE1:

The service due indicator message has now been reset, therefore, the next service due reminder message will not

be displayed until 1000 km before the next service is due.

NOTE2:

The Service Due message is calculated only by distance. Remember that if driving infrequently special servicing

may be required.

ADDITIONAL TRIP COMPUTER NOTES

Two warning lights are linked to the trip computer displays.

1. When the fuel tank level first dr ops below 8 litres ( approx .) , the DIST ANCE TO EMPTY display is autom atic ally

shown for 10 seconds, after which the trip computer returns to its previous display.

2. When the OVERSPEED warning symbol is first shown, the OVERSPEED trip computer display is automatically

shown for 10 s econds. This is to show what the pre-selected speed is and allow adjustm ent if required. After

10 seconds, the trip computer returns to its previous display.

Some of the displays will change the units of measurem ent over tim e. For exam ple, the TIME TO GO will show 10

minute units above 2 hours to arrival, will show 5 m inute units below 2 hours to arr ival and will show 1 minute units

below 10 minutes to arrival.

If the HOT warning is displayed when driving it indicates that the engine water tem perature is dangerously hot. An

audible warning chime is designed to bring this to the attention of the operator. The vehicle should be stopped as

soon as it is safe to do so.

NOTE:

The message will only be displayed for 10 seconds.

If the SERV ERROR warning is displayed on the trip computer a fault in the trip computer system is indicated and

the vehicle should be taken to a Holden Dealer.

1.5 TRIP COMPUTER - TRIPLE WINDOW TYPE

OPERATION

The buttons f or the tr ip com puter are loc ated to the

left of the gauges. As in the s ingle window type, the

triple windows for the trip computer are located

directly beneath the gauges.

The basic, more commonly used functions of the

trip computer f ollow. T ap the MODE button to s c roll

between these three sets of displays.

The speed related displays are in the left window,

distance related displays in the centre and fuel

related displays on the right.

The trip c omputer c an be reset when AVG SPEED

or TRIP TIME are shown on the left window.

Resetting does not affect the ODOMETER,

OVERSPEED, DISTANCE TO EMPTY or INST

FUEL.

For customising details of the trip computer, and

additional operating notes, refer to

CUSTOMISE MODE in this Section.

BASIC FUNCTIONS

AVERAGE SPEED

Shows the average speed (while the engine is

running) since the trip computer was reset.

Figure 12C-18

ODOMETER

The odometer records kilometres travelled since

the vehicle was built.

Figure 12C-19

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-20

TRIP TIME

Shows the engine running time since the trip

computer was reset.

Figure 12C-21

TRIP DISTANCE

Shows the kilometres travelled from the start of a

particular trip. Reset the reading to zero by

pressing the ⇑

⇑⇑

⇑ and ⇓

⇓⇓

⇓ buttons together when this

window is shown.

Figure 12C-22

FUEL USED

Shows the total litres of fuel used since the trip

computer was reset.

Figure 12C-23

OVERSPEED

Set the speed not to be exceeded. For example if

driving in a 90 km/h zone, set OVERSPEED to 90

by tapping the ⇑

⇑⇑

⇑ or ⇓

⇓⇓

⇓ buttons. W hen vehicle speed

exceeds 90 km /h the O VERSPEED warning light in

the instrument panel and a chime will warn that

speed has been exceeded. At that time the trip

computer will automatically show overspeed

display, allowing adjustments as required.

OVERSPEED is adjustable in 5 km/h units and

works at speeds between 20 km/h and 200 km/h.

Tap the ⇑

⇑⇑

⇑ or ⇓

⇓⇓

⇓ buttons or hold a button to scroll

quickly to a speed. Briefly press the ⇑

⇑⇑

⇑ and ⇓

⇓⇓

⇓

buttons together to set OVERSPEED to the speed

at which the vehicle is currently travelling.

Press and hold both the ⇑

⇑⇑

⇑ and ⇓

⇓⇓

⇓ buttons for at least

2 secs (when this window is shown) to turn

OVERSPEED ON or OFF.

OVERSPEED presets can also be chosen, refer

OVERSPEED ADJUSTING in this Section.

Figure 12C-24

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 from city to highway driving.

Figure 12C-25

INSTANTANEOUS FUEL

Shows instantaneous fuel usage in litres per 100

km when driving. When speed drops below 10

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

Figure 12C-26

ADDITIONAL DISPLAYS

Additional displays can be activated using

customise m ode. Ref er CUSTOMISE MO DE in this

Section. DISTANCE TO ARRIVAL, TIME TO

ARRIVAL and REMAINING FUEL are turned on

and off as a set, they cannot be individually

activated.

When the displays are activated, press the MODE

button to scroll through all the Trip Computer

displays. There will now be four sets of displays,

instead of thr ee. The new displays will be slotted in

between the TRIP display and the DISTANCE TO

EMPTY display. Customise mode can be used to

deactivate the following displays, if required.

TIME TO ARRIVAL

Shows trip time to arrival in hours and minutes,

based on DISTANCE TO ARRIVAL.

Figure 12C-27

DISTANCE TO ARRIVAL

At the start of a trip estimate distance to arrival

(from maps, road signs etc.). Tap the ⇑

⇑⇑

⇑ or ⇓

⇓⇓

⇓

buttons until the display shows estimated trip

distance. When the vehicle is driven the computer

will constantly update time to arrival, based on

changing driving speeds. The ⇑

⇑⇑

⇑ or ⇓

⇓⇓

⇓ buttons can be

used to adjust the kilometres any time this display

is shown.

Figure 12C-28

REMAINING FUEL

Shows the litres of fuel left in the fuel tank , r ounded

to the nearest 5 litres.

When fuel level is low, LO will be displayed.

Figure 12C-29

TRIP B

W hen the Trip B set of windows has been turned on (using the custom ise mode) and are showing on the display,

hold the MODE button down for 2 seconds. The trip computer will show Trip B details.

Figure 12C-30

Press the MODE button to view displays. Two diff erent sets of trip displays are now counting, the original set of trip

displays (labelled A while B is turned on) and a new set of tr ip displays, labelled B. T his 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 2

seconds when Trip B is shown). TIME TO ARRIVAL, DISTANCE TO ARRIVAL and REMAINING FUEL will again

be shown on the display, but Trip B will still be c ounting away in the bac kground and the or iginal trip display can be

used for short distances during the journey. Trip B can be viewed at any time by pressing the MODE button for 2

seconds when DISTANCE TO ARRIVAL is shown.

OVERSPEED A DJUSTING

Instead of adjusting O/SPEED up and down in 5 km increments (refer OVERSPEED in this Section), you can

instead set four commonly used speeds, e.g. 60, 80, 100 and 110.

Hold down the MODE button for 2 seconds when the O/SPEED is shown. The display will change from normal

O/SPEED to O/SPEED PRESET.

Figure 12C-31

PRESET 1 is the first preset number, with a default setting of 60 km/h.

Tap the ⇑

⇑⇑

⇑ button to see the second PRESET, which has a default setting of 80 km/h, PRESET 3 has a default

setting of 100 km/h and PRESET 4 of 110 km/h. Tap the ⇑

⇑⇑

⇑ or ⇓

⇓⇓

⇓ buttons to move between the PRESET numbers.

The O/SPEED PRESET display has now replaced the normal O/SPEED display. Tap the MODE button to scroll

through the other displays.

To change the display back to normal O/SPEED, again hold down the MODE button for 2 seconds while the

O/SPEED PRESET display is shown.

ALTERING OVERSPEED PRESETS

The default settings of 60, 80, 100 and 110 km/h can be changed to suit individual preferences.

The vehicle must be stationary when changing an O/SPEED PRESET. To alter, ensure the preset to change is

showing, e.g. PRESET 2 80 k m /h. T hen, brief ly pres s the ⇑

⇑⇑

⇑ and ⇓

⇓⇓

⇓ buttons together. The display starts to flash. Us e

the ⇑

⇑⇑

⇑ or ⇓

⇓⇓

⇓ button to adjust the setting. When c orrec t, briefly press the ⇑

⇑⇑

⇑ and ⇓

⇓⇓

⇓ buttons together. Each PRESET can

be changed in this way.

The PRESETs are automatically arranged in ascending order.

One or more PRESET can be assigned to OF F, by reducing the preset down to 0 (O FF ). When dr iving only three or

less PRESETs will be available to choose from. To turn back on, select the OFF PRESET (when the vehicle is

stationary) and use the ⇑

⇑⇑

⇑ button to increase the number.

An O/SPEED PRESET must be altered when the vehicle is stationary. If the ⇑

⇑⇑

⇑ and ⇓

⇓⇓

⇓ buttons are briefly pressed

while driving, the OVERSPEED setting will be changed to the speed at which you are travelling.

If the ⇑

⇑⇑

⇑ and ⇓

⇓⇓

⇓ buttons are pressed together for more than 2 seconds, either while driving or stationary, O/SPEED will

be turned completely OFF or ON.

ADDITIONAL FUNCTIONS

The following details the additional functions that have been provided in the trip computer.

CUSTOMISE MODE

The trip computer uses in its calculations different calibration num bers. These figures are pre-set for the standard

vehicle and do not have to be adjusted. However, each vehicle does vary due to tyre size, tolerances etc., and

therefore the facility is provided to adjust each figure for greater accuracy. Also provided in customise mode are

different choices about displays.

To enter customise mode, press and hold the MODE button while the ignition is turned from OFF to ON. After

entering customise mode, tap the MODE button to view each calibration/choice or alter the settings as described

below.

CALIBRATION 1: DISTANCE CALIBRATION

If necessary to check/adjust distance calibration, line the vehicle front wheels against a highway kilometre shield

post before entering customise mode. Press both the ⇑

⇑⇑

⇑ and ⇓

⇓⇓

⇓ buttons together when TRIP DIST is showing in

the centre window (to zero the TRIP DIST ). Dr ive to another s hield pos t (between 10 k m and 500 km) and st op with

the front wheels lined up again. Note the real distance between the shield pos ts and the distanc e on the TR IP DIST

display. If different, enter customise mode. The TRIP DIST will be shown in the centre window. Press the ⇑

⇑⇑

⇑ or ⇓

⇓⇓

⇓

buttons to adjust the centre display to show the real distance indicated by the shield posts.

NOTE:

1 The left display (the distance calibration %) will automatically adjust with the centre display. The default distance

calibration is 100.0%. The maximum it can be adjusted to is 120.0%, the minimum is 80%.

NOTE:

2 Altering the distance calibration does not affect the odometer.

Press the MODE button to go to the next calibration number.

Figure 12C-32

CALIBRATION 2: FUEL FLOW CALIBRATION NUMBER

If necessary to check/adjust fuel flow calibration number, calculate the following before entering customise mode.

Press both the ⇑

⇑⇑

⇑ and ⇓

⇓⇓

⇓ buttons together when FUEL USED is s howing in the r ight - hand window (to zero the FUEL

USED). Then, for at least five consecutive fuel fills, record the total litres added (but no more than 500 litres),

according to the service station fuel bowser. If this is different to the FUEL USED reading, enter customise mode

and tap the MODE button once, to show CAL 2. The FUEL USED will be shown on the right - hand display. Press

the ⇑

⇑⇑

⇑ or ⇓

⇓⇓

⇓ buttons to adjust the right - hand display to show the actual total fuel us ed ac cor ding to the s ervic e s tation

fuel bowser.

NOTE:

The left display (the fuel flow calibration %) will automatically adjust with the right display. The default fuel calibration

is 100.0%. The maximum it can be adjusted to is 120.0%, the minimum is 80%.

Figure 12C-33

Press the MODE button to go to the next choice.

CHOICE: SKIP DISTANCE TO ARRIVAL

To activate an additional set of displays: TIME TO ARRIVAL, DISTANCE TO ARRIVAL and REMAINING FUEL,

press ⇑

⇑⇑

⇑ or ⇓

⇓⇓

⇓ button to select YES or NO.

For an explanation of these displays refer ADDITIONAL DISPLAYS in this Section.

Figure 12C-34

Press the MODE button to go to the next calibration number.

CALIBRATION 3: ADJUST DISTANCE TO ARRIVAL DEFAULT SETTING

DISTANCE TO ARRIVAL can be reset (when not in customise mode) by pressing the ⇑

⇑⇑

⇑ and ⇓

⇓⇓

⇓ buttons together. The

distance resets to 500 k m, which is the def ault setting. When in cus tomis e mode, the def ault setting can be altered

up or down by pressing ⇑

⇑⇑

⇑ or ⇓

⇓⇓

⇓ buttons.

This can be used to quickly recall details of a regularly travelled trip.

Figure 12C-35

Press the MODE button to go to the next choice.

CHOICE: UNDERSPEED CHIME

OVERSPEED provides a chime when travelling speed exceeds OVERSPEED setting, and another chime when

travelling speed drops below UNDERSPEED setting. Customise mode provides a choice for turning the second

chime, the "underspeed" chime OFF or ON. Press ⇑

⇑⇑

⇑ or ⇓

⇓⇓

⇓ button to turn underspeed chime OFF or ON.

Figure 12C-36

Then press MODE button to end Customise mode.

NOTE:

Customise mode will end automatically if vehicle speed exceeds 10 km/h or if the ignition is turned off and on.

SERVICE DUE

A service reminder message is built into the trip computer.

The reminder message will first appear 1,000 km before the service is actually due, giving time to arrange for the

service to be perform ed. The message will be shown on the Trip com puter for 10 seconds whenever the vehicle's

ignition is switched ON or OFF, until the tr ip com puter is reset. When the s ervice is over due the mess age will f lash

for 10 seconds when the ignition is turned ON or OFF.

•SERV 1500 km will show when the vehicle has travelled 1,000 km since it was built.

•SERV 10000 km will show when the vehicle has travelled 9,000 km since it was built.

•SERV 20000 km will show when the vehicle has travelled 19,000 km since it was built.

•SERV 30000 km will show when the vehicle has travelled 29,000 km since is was built etc.

When a service is performed on the v ehicle, this reminder should be reset so that it does not prompt until

the next service is nearly due. Otherwise, it will keep on reminding of a service that is already complete:

W hen a ser vice is perform ed on the vehicle, this rem inder should be reset s o that it does not prom pt until the nex t

service is nearly due. Otherwise, it will keep on reminding of a service that is already complete:

To reset the service reminder message:

1. Turn the ignition OFF.

2. Hold down the ⇑

⇑⇑

⇑ and ⇓

⇓⇓

⇓ mode buttons on the trip computer together.

3. Turn the ignition ON (mode buttons still depressed).

4. Release mode buttons after approximately 3 seconds.

5. Use the mode button to step through trip computer screens until the service due reminder screen appears on

the LCD (usually only one press).

6. Press and hold both the ⇑

⇑⇑

⇑ and ⇓

⇓⇓

⇓ mode buttons until an audible beep is heard (approximately 3 seconds).

7. Turn the ignition OFF.

NOTE1:

The servic e due indicator mes sage has now been res et, therefore, the next ser vice due reminder m essage will not

be displayed until 1000 km before the next service is due.

NOTE2:

The Service Due message is calculated only by distance. Remember that if driving infrequently special servicing

may be required.

ADDITIONAL TRIP COMPUTER NOTES:

If the wrong buttons have been accidentally pressed, causing the window to show other than normal, turn the

ignition OFF then ON again when the vehicle is standing still.

Two warning lights are linked to the trip computer displays:

1. When the fuel tank level first dr ops below 8 litres ( approx .) , the DIST ANCE TO EMPTY display is autom atic ally

shown for 10 seconds, after which the trip computer returns to its previous display.

2. When the OVERSPEED warning symbol is first shown, the OVERSPEED trip computer display is automatically

shown for 10 seconds. This is to show what your pre-selected speed is and allow you to adjust it if required.

After 10 seconds, the trip computer returns to its previous display.

Some displays will change the units of meas urement over tim e. For ex ample, the TIME T O ARRIVAL will s how 10

minute units above 2 hour s to ar r ival, will show 5 m inute units below 2 hours to arr ival and will show 1 m inute units

below 10 minutes to arrival.

Calais Model vehicles have a priority key system which identifies settings used by two individual keys (priority 1 or

priority 2). If the vehicle is fitted with this system the trip computer will remember the last selected settings. W hen

the ignition is turned on with a particular key the last set of displays and overspeed settings for that key owner will

be used.

NOTE:

An X symbol, shown in the left trip computer window, indicates a fault in the trip computer.

2. INSTRUMENT SERVICE OPERATIONS

2.1 INSTRUME NT CLUSTER

REMOVE

1. Disconnect the battery earth lead.

CAUTION:

If vehicle is equipped with SRS (AIRBAG),

disable the system. Refer to ‘SUPPLEMENTAL

RESTRAINT SYSTEM, Section 12M (Version

6.2) or Section 12M (Versiom 8.0/8.1).

2. Remove the Instrument panel facia, refer

Section 1A3 INSTRUMENT PANEL &

CONSOLE.

3. Remove the two (2) screws securing the

instrument cluster to the instrument panel.

4. Pull instrument cluster out, disconnecting rear

of cluster from instrument connector, feed

cluster out between instrument panel pad and

steering wheel.

Figure 12C-37

REINSTALL

Installation of the instrument cluster is the reverse

of removal procedure.

IMPORTANT:

If vehicle is equipped with SRS AIRBAG),

enable the system. Refer to ‘SUPPLEMENTAL

RESTRAINT SYSTEM, Section 12M - (Version

6.2) or Section 12M - (Version 8.0/8.1).

1. On completion of installation, check that all

instrum ent cluster, instr um ent fac ia switch and

clock functions are operating correctly.

NOTE 1:

If installing a new instrument cluster or trip

computer, the original odometer and trip odometer

readings must be transferred into the replacement

instrum ent cluster. This can be done by authorised

Holden dealers using TECH 2.

NOTE 2:

Before replacing any instrument cluster assembly

that is suspected of being faulty, first carry out

instrument cluster input checks, refer

2.2 INSTRUMENT CLUSTER INPUTS in this

Section.

Techline

If these tests prove that the inputs to the instrument

cluster are OK, carry out checks of the gauge

assembly, refer 5.3 INSTRUMENT CLUSTER

DIAGNOSTICS in this Section.

Following these steps will ensure correct diagnosis

of a system fault and needless replacement of

components which are not faulty.

DISASSEMBLE

Disassembly of the instrument cluster assembly is

limited to lens and bulb replacement, refer to Fig.

12C-37

CAUTION:

During the following service operation, when

removing or reinstalling the instrument gauge lens,

grip around the edges. Finger marks on the lens and

instrument gauge assembly faces are difficult to

remove.

1. Carefully remove the instrument cluster lens by

releasing the tabs securing the lens to the

instrument cluster housing refer Fig.12C-37.

2. Remove all warning lamp and instrument cluster

assembly illumination bulbs and sockets by

twisting sockets to release them from case.

REASSEMBLE

Reassembly is the reverse of disassembly

procedure.

2.2 INSTRUME NT CLUS TER INPUTS

The following chart details the instrument cluster

connector terminal identification.

Figure 12C-38

PIN NUMBER FUNCTION

1 Right Turn

2 Cruise Engaged

3 Fog Lamps ON

4 Park Lights

5 Illum. - Switch Negative

6 Ground

7 High Beam

8 Left Turn

9 ABS Off

10 LPG Fuel Sender

11 Low Traction

12 Serial Data

13 Trip Comp. Switch input

14 Generator

15 Brake (P&F)

16 Fuel Sender

17 Speed In

18 Tacho In

19 Ignition

20 Battery

CHECK

To check the input voltage or wiring continuity

between the various sensors/senders to the

instrument cluster connector refer to

5. DIAGNOSTICS in this Section.

2.3 SE NDER UNITS

VEHICLE SPEED SENDER

MANUAL TRANSMISSION

For all details of the m anual trans m ission vehic le speed sensor rem oval, testing, reinstallation instr uctions, ref er to

Section 6C1 POWERTRAIN MANAGEMENT V6 ENGINE or Section 6C2 POWERTRAIN MANAGEMENT V8

ENGINE.

AUTOMATIC TRANSMISSION

For all details of the automatic transmission vehicle speed sensor removal, testing, reinstallation instructions, refer

to Section 6C1 POWERTRAIN MANAGEM ENT V6 ENGINE or Section 6C2 POWERTRAIN MANAGEM ENT V8

ENGINE.

FUEL GAUGE SENDER UNIT

TEST - SENDER UNIT OPERATION

With sender unit removed from fuel tank, use an ohmmeter to measure resistance between sender unit terminals,

at the specified float positions.

FLOAT LEVEL DECK

HIGHT RESISTANCE

SETTING OHMS FLOAT POSITION

3 - 10 mm 37.5 - 42.5

246.7 - 253.3

Empty

Full

NOTE:

When the float is positioned half way, a resistance of 110 Ohms - 115 Ohms can be expected.

If resistance is not as specified at a particular float position, replace sender unit.

Techline

2.4 TRIP COMPUTER SWITCH ASSEMBLY

REMOVE

1. Disconnect the battery earth lead.

CAUTION:

If vehicle is equipped with SRS (AIRBAG),

disable the system. Refer to ‘SUPPLEMENTAL

RESTRAINT SYSTEM, Section 12M - (Version

6.2) or Section 12M - (Version 8.0/8.1).

2. Remove the Instr um ent panel fac ia far enough

to gain access to trip computer switch

connector, refer Section 1A3 INSTRUMENT

PANEL & CONSOLE

3. Depress locking tang on trip computer switch

instrument harness connector and pull

connector from switch.

4. From behind instrument facia, squeeze

together switch to instrument facia retainers

and push switch out from facia.

Figure 12C-39

TESTING SWITCH

With the aid of an ohmmeter, check resistance of

trip computer switch contacts using the following

chart.

If resistance is not as specified at switch position,

replace the switch assembly.

Figure 12C-40

CONNECTOR DETAILS

PIN FUNCTION

1 NOT CONNECTED

2 NOT CONNECTED

3 SECURITY LED

4 NOT CONNECTED

5 ENCODED SWITCH

6 ILLUMINATION GROUND

7 ILLUMINATION POSITIVE

8 GROUND

TRIP COMPUTER SWITCH CONTACTS

BUTTON

DEPRESSED Terminal No.

12345678

MODE X X

UP X X

DOWN X X

Illumination

Bulb and

Circuit

FUNCTION RESISTANCE

MODE 20 KΩ

UP 10 KΩ

DOWN 4.99 KΩ

SECURITY LED --

ILLUMINATION --

REINSTALL

Reinstallation is the reverse of removal

procedures.

IMPORTANT:

If vehicle is equipped with SRS AIRBAG),

enable the system. Refer to ‘SUPPLEMENTAL

RESTRAINT SYSTEM, Section 12M - (Version

6.2) or Section 12M - (Version 8.0/8.1).

2.5 INSTRUME NT PANEL AUXILIARY POWER CONNECTOR

REMOVE

1. Disconnect the battery earth lead.

CAUTION:

If vehicle is equipped with SRS (AIRBAG), disable the system. Refer to ‘SUPPLEMENTAL RESTRAINT

SYSTEM, Section 12M (Version 6.2) or Section 12M - (Version 8.0/8.1).

2. Remove the instrument panel centre facia assembly refer Section 1A3 INSTRUMENT PANEL & CONSOLE.

3. Rem ove the auxiliary power connec tor retainer nut f rom the rear of the ins trum ent panel centr e facia as sem bly

removing the connector assembly.

Figure 12C-41

REINSTALL

Installation is the reverse of removal procedure.

IMPORTANT:

If vehicle is equipped with SRS AIRBAG), enable the system. Refer to ‘SUPPLEMENTAL RESTRAINT

SYSTEM, Section 12M (Version 6.2) or Section 12M - (Version 8.0/8.1).

3. WIPERS AND WASHERS SERVICE OPERATIONS

3.1 FRONT WIPER ARM

REMOVE

1. Open engine hood.

2. Using a small sc r ew driver or s cr ibe, gently pry

the cap from the front wiper arm.

3. Remove the nut securing the front wiper arm

to the drive spindle.

4. Remove wiper arm from drive spindle, taking

care not to allow wiper arm to contact rear

edge of engine hood.

Figure 12C-42

5. If required, remove wiper blade from arm by

lifting up the retainer on the wiper blade and

pulling blade from arm.

Figure 12C-43

REINSTALL

1. If removed, slide wiper blade into wiper arm

until the wiper blade retainer locks into

position.

2. Ensure that the wiper motor linkages are in

the PARKED position.

3. Reinstall wiper arm assembly onto drive

spindle so that the blade is positioned with the

tip 35 mm ± 5 mm above the edge of the

plenum cover, refer Fig. 12C-44.

NOTE: Ensure the correct wiper arm and blades

are fitted to each side of the vehicle, ref er Fig 12C-

44.

4. Reinstall the nut securing the front wiper arm

to the drive spindle and tighten to the correct

torque specification.

WI PER ARM NUT

TORQUE SPECIFICATION 20 - 25 Nm

5. Reinstall wiper arm cap.

Figure 12C-44

3.2 REAR WIPER ARM

REMOVE

1. Lift up trim cap from wiper m otor drive spindle

end of wiper arm.

2. Remove wiper arm to drive spindle securing

nut and remove wiper arm.

Figure 12C-45

3. If required, remove wiper blade from arm by

lifting up the retainer on the wiper blade and

pulling blade from arm.

Figure 12C-46

REINSTALL

1. If removed, slide wiper blade into wiper arm

until the wiper blade retainer locks into

position.

2. Ensure the wiper motor is in the PARKED

position.

3. Reinstall wiper arm assembly onto drive

spindle so that the wiper blade rests on the

glass moulding, refer Fig. 12C-47.

NOTE:

To ensure arm will not wipe over moulding in the

park position, push arm onto wiper spindle with the

arm in the vertical position and then rotate wiper

arm clockwise until blade rests on glass moulding.

4. Reinstall the nut sec uring the wiper arm to the

drive spindle and tighten to the correct torque

specification.

WI PER ARM NUT 6 - 14

TORQUE SPECIFICATION Nm

5. Push trim cap onto wiper arm.

Figure 12C-47

Techline

3.3 FRONT AND REAR WIPE R BLADES

REMOVE

1. W ith engine hood lowered, lift wiper arm from

glass.

2. Remo ve wiper blade from arm by lifting up the

retainer on the wiper blade and pulling blade

from arm.

Figure 12C-48

REINSTALL

1. Slide wiper blade into wiper arm until the wiper

blade retainer locks into position.

2. Lower wiper arm onto glass.

3.4 FRONT AND REAR WIPER BLADE INSERT

REPLACE

1. Remove wiper blade from arm, refer

3.3 FRONT AND REAR WIPER BLADES in

this Section.

2. Using a sm all screwdriver, lif t the retention lug

and slide the end cap off the wiper insert.

NOTE:

Do not re-use end cap.

3. Slide insert out of wiper blade and discard.

Figure 12C-49

NOTE:

The replacement insert will be supplied with one

end cap and a small retaining clip fitted.

4. Rem ove the small retaining clip f rom the ins ert

and slide the end without the end cap into the

wiper blade ensuring that the insert passes

through each metal claw.

5. Assemble the new end cap onto the end of the

insert, ensuring the retention lug on the end

cap is located securely behind the two

upturned ends of the metal rails, refer Fig

12C-50.

6. Reinstall wiper blade onto arm, refer

3.3 FRONT AND REAR WIPER BLADE in

this Section.

Figure 12C-50

3.5 FRONT WIPER MOTOR AND LINKAGE

CHECKING WIPER MOTOR WIRING

The following operation checks the wiper motor

wiring at the wiper motor connector (YE93) as an

aid to diagnosing a fault in the wiper motor system.

NOTE:

On vehicles with high series BCM, operation of

the interm ediate dwell control can be c heck ed with

TECH 2, refer Section 12J-2 HIGH SERIES BCM.

1. Remove wiper arms, plenum covers, water

deflector and disconnect wiring harness

connector YE93, refer to Steps 1 - 6 in the

following wiper motor removal procedure.

2. Using a multimeter connected with the

negative lead to the black wire term inal of the

wiring harness connector and the positive

lead to the main wiring harness connector

wire terminal nom inated in the f ollowing chart,

check wiper motor wiring as follows:

Figure 12C-51

WIRE

COLOUR CIRCUIT

NO. CIRCUIT MULTIMETER

SETTING RESULT IF WIPER MOTOR

WIRING IS OK

Black/White 152 Earth Resistance 0 ohms (approximately).

Brown/Green 41 Power

source Voltage B+ with ignition in ACC or ON

position.

Grey/Red 91 Low speed Voltage B+ with ignition in ACC or ON

position and wiper switch in low

speed position.

LBlue/Red 92 High speed Voltage B+ with ignition in ACC or ON

position and wiper switch in high

speed position.

Grey/Red 91 INT

Position Voltage B+ cycling with ignition in ACC or

ON position and wiper switch in

INT position.

3. With wiring harness connector YE93

disconnected, check for continuity between

the Yellow wire, circuit 196 and the Grey/Red

wire, circuit 91, as per the following table:

SWITCH POSITION RESULT IF WIPER MOTOR WIRING IS OK

OFF Continuity

INTERMITTENT Continuity

LOW Continuity (low resistance)

HIGH Open circuit

NOTE:

If any of the readings are not as specified, check

and repair faulty circuit as necessary.

CHECKING WIPER MOTOR OPERATION

The following operation checks the various

functions of the wiper motor. If there is a f ault in the

wiper system, and the following operation proves

that the wiper motor is OK, check the wiper/washer

switch or wiring as described in this Section, or

check the BCM control, depending on model

variant, refer to either Sect ion 12J-1 L O W SERIES

BCM or Section 12J-2 HIGH SERIES BCM.

If the following operation proves that the wiper

motor is faulty, replace the wiper motor assembly.

1. Remove wiper arms, plenum covers, water

deflector and disconnect wiring harness

connector, refer to Steps 1 - 6 in the following

wiper motor removal procedure.

2. Connect a lead from vehicle battery positive

terminal to the Red wire of the wiper motor

connector. T he wiper motor should operate on

low speed.

3. Connect a lead from vehicle battery positive

terminal to the Green wire of the wiper motor

connector. T he wiper motor should operate on

high speed.

Figure 12C-52

4. To check wiper motor PARK operation,

connect a jum per lead from vehicle positive to

Red wire of motor connector and allow motor

to turn linkages approximately 1/4 of a turn

past the PARK position.

To check if the wiper motor is off the parked

position, connect a test lamp between battery

positive and the Yellow wire of the wiper m otor

connector. The lamp should NOT illum inate. If

the lamp does illuminate, contacts within the

wiper motor ar e faulty or check f or Yellow wire

shorted to earth.

Figure 12C-53

Using a second jumper wire, connect the Red

and Yellow wires of the wiper motor connector

together.

Using jumper leads from battery positive,

connect to Brown wire of wiper motor

connector and the wiper m otor should turn the

wiper linkages to the PARK position and stop.

If the wiper motor does not tur n the link ages or

the linkages do not stop at the PARK position,

the contacts within the wiper motor are faulty

and therefore, the wiper motor must be

replaced.

5. Reconnect wiring harness connector to wiper

motor.

6. Reinstall water deflector, plenum chamber

covers and wiper arm assemblies, refer to the

following removal and reinstallation procedure

of the wiper motor in this Section.

Figure 12C-54

CIRCUIT DIAGRAMS

Fig. 12C-55 shows the circuit for the front

wiper/washer system for vehicles with Low Series

BCM and Fig. 12C-56 the circuit for the front

wiper/washer system for vehicles with High Series

BCM.

Figure 12C-55

Figure 12C-56

REMOVE

1. Rem ove wiper arm s, ref er 3.1 FRONT WIPER

ARM in this Section.

2. Remove the six f asteners s ecuring the plenum

chamber covers to the plenum chamber.

3. Pull the plenum chamber covers forward to

release them from the retainer securing them

to the windscreen, lift covers upwards while

manoeuvring the cover away from the engine

hood hinge and remove covers.

NOTE:

Remove the right - hand plenum cover first.

Figure 12C-57

4. Remove the 10 fasteners securing the water

deflector to the plenum chamber.

5. Pull the water deflector forward to release it

from the retainers securing it to the

windscreen, remove water deflector.

Figure 12C-58

6. Squeeze the tang at the main wiring harness

to wiper motor harness connector and

disconnect wiring harness.

7. Remove the five screws securing the wiper

motor and linkage assembly to the plenum

chamber and remove wiper motor and linkage

assembly.

8. If necessary, remove the nut securing the

wiper linkages to the wiper arm pivot and the

two screws securing the wiper motor to the

wiper linkages and separate the wiper motor

from the wiper linkages.

Figure 12C-59

REINSTALL

Installation of the wiper motor is the reverse of the

removal procedure, noting the following:

1. Ensure all fasteners are tightened to the

correct torque specification.

WI PER MOTOR TO LINKAGE

SECURING SCREWS TORQUE

SPECIFICATION 7 - 9 Nm

WI PER MOTOR CRANK ARM PIVOT

TO WIPER LINKAGE SECURING NUT

TORQUE SPECIFICATION 16 - 20 Nm

WI PER MOTOR AND LINKAGE

ASSEMBLY SECURING SCREW S

TORQUE SPECIFICATION 4 - 6 Nm

NOTE:

Ensure that the wires from the connector do not get

caught or foul the wiper motor linkages.

2. Operate wiper motor before installing the

wiper arm s to ensure it is in the correct PARK

position.

3. When installing the water deflector and

plenum covers, ensure that the retaining tabs

engage under the windscreen.

3.6 WI P ER/WASHER SWITCH

REMOVE

1. Disconnect battery earth lead.

2. Remove ignition keys from ignition switch.

CAUTION:

If vehicle is equipped with SRS (AIRBAG),

disable the system. Refer to ‘SUPPLEMENTAL

RESTRAINT SYSTEM, Section 12M (Version 6.2)

or Section 12M - (Version 8.0/8.1).

3. Lower fuse panel cover.

4. Release steering column height adjuster,

completely lower steering column and leave

lever in the release position.

5. Insert finger between the steering wheel and

the lower cover as shown in Fig. 12C-60 and

apply a small amount of pressure (pushing

towards instrument cluster) while lifting the

upper cover up.

6. Remove upper cover by lifting upwards and

rearwards. Figure 12C-60

7. Remove sc rew securing the lower cover to the

steering column.

8. Slide lower cover toward the steering wheel to

release cover from the retaining tangs on the

steering column.

9. While feeding the key reader outer surround

from lower cover, remove cover.

Figure 12C-61

10. On vehicles with high series BCM, disconnect

the wiring harness connector to the wiper dwell

control switch harness connector by

depressing harness retaining tang and pulling

connectors apart.

Figure 12C-62

11. Depress retaining tangs on switch assembly

and withdraw switch from switch housing on

steering column.

12. Lift up wiring harness connector retaining

tangs on either side of switch body and pull

connector from switch and remove switch.

Figure 12C-63

TESTING SWITCH

Using an ohmmeter connected to the various

switch terminals (refer Fig. 12C-64), check the

operation of the wiper/washer switch as per the

following chart.

If continuity is not as specified at any switch

position, replace switch assembly.

NOTE:

With dwell control adjusted fully up, multimeter

should register approximately 5.3 kohms, and with

control adjusted fully down, approximately 680

ohms.

Figure 12C-64

SWITCH POSITION TERMINALS

OFF 53 to 53e

INT 53 to 53e

J to 53a

1 53 to 53a

2 53a to 53b

FRONT. WASH W to 53a

REAR WIPE 53a to 53H

REAR WASH 53a to WH

53a to 53H

REINSTALL

Installation of the wiper/washer switch is the

reverse of the removal procedure, noting the

following:

Check operation of all wiper/washer switch

functions.

IMPORTANT:

If vehicle is equipped with SRS AIRBAG), enable

the system. Refer to ‘SUPPLEMENTAL

RESTRAINT SYSTEM, Section 12M (Version 6.2)

or Section 12M - (Version 8.0/8.1).

3.7 W INDSHIELD WASHERS

REMOVE AND REINSTALL

Fig. 12C-65, 12C-66 and 12C-67 illustrate the installation of the windshield washer system components.

The spray direction of the washer nozzle can be adjusted by inserting the point of a pin into the ball of the nozzle

and swivelling it to the position nominated in Fig. Fig.12C-67.

Figure 12C-65

Figure 12C-66

Figure 12C-67

CHECKING WASHER PUMP AND WIRING

The f ollowing operation chec ks the power sourc e and earth circuits f or the washer pump. If the following operation

proves that the washer pum p wiring is OK, and the washers are not work ing, there is a f ault in the pump or ther e is

a blockage in either the washer hoses or nozzles. If the wiring check indicates a fault, c heck wiring continuity. Also,

if necessary, check wiper/washer switch, refer 3.6 WIPER/WASHER SWITCH, in this Section.

1. Remove wiring harness connector from washer pump.

2. Connect a multimeter across washer pump wiring harness connector and check pump wiring as follows:

FRONT WASHERS

WIRE

COLOUR CIRCUIT

No. CIRCUIT MULTIMETER

SETTING RESULT IF WIPER

MOTOR IS OK

LBlue 94 Power

source Voltage Multimeter + lead

connected to LBlue wire

and - lead connected to

White/Blue wire

connector.

B+ with ignition in ACC or

ON position and

wiper/washer lever pulled

back.

White/Blue 494 Earth Resistance Multimeter leads

connected to White/Blue

wire and earth.

Approximately 0 ohms

with wiper/washer lever

pulled back.

REAR WASHERS

LBlue 94 Earth Resistance Multimeter leads

connected to White/Blue

wire and earth.

Approximately 0 ohms

with wiper/washer lever

pushed forward.

White/Blue 494 Power

source Voltage Multimeter + lead

connected to White/Blue

wire and - lead connected

to LBlue wire of

connector.

B+ with ignition in ACC or

ON position and

wiper/washer lever

pushed forward.

If wiring check s OK, apply 12 volts across the pump term inals and the pum p should operate. If pump oper ates, but

water does not spray from nozzles, revers e connections and check to see if water now sprays from nozzles. If water

still does not spray from nozzles, check for a blockage in the washer hoses, nozzles or pump.

3.8 REAR WIPER MOTOR

REMOVE

1. Remove rear wiper arm, refer

3.2 REAR WIPER ARM, in this Section.

2. Remove tailgate interior trim panel, refer

Section 1A4 REAR COMPARTMENT LID &

TAILGATE.

3. Depress retaining tang on rear compartment

harness connector and disconnect from rear

wiper motor connector.

4. Remove the two screws securing the rear

wiper motor to the tailgate, remove wiper

motor and bracket assembly.

5. Remove inner spacer and cap from wiper

motor shaft.

Figure 12C-68

REINSTALL

Installation of the r ear wiper motor is the rever se of

the removal procedure, noting the following points

1. Ensure the inner and outer spacers are fitted

onto the wiper shaft correctly, refer Fig. 12C-

69.

2. To ensure the earth connection, the wiper

motor earth lead must be installed before the

tailgate harness earth lead.

3. Tighten wiper motor securing screws to the

correct torque specification.

Figure 12C-69

WI PER MOTOR SECURING SCREW

TORQUE SPECIFICATION 6 - 14 Nm

Techline

CHECKING WIPER MOTOR WIRING

1. Remove tailgate interior trim panel, refer

Section 1A4 REAR COMPARTMENT LID &

TAILGATE.

2. Depress retaining tang on rear compartment

harness connector and disconnect from rear

wiper motor connector.

3. Using a multimeter connected between one

of the wiper motor securing screws and the

rear compartment harness connector, check

wiper motor wiring as per the following chart.

Figure 12C-70

WIRE

COLOUR CIRCUIT

No. CIRCUIT MULTIMETER

SETTING RESULT IF WIPER

MOTOR IS OK

Brown/White 41 Power

source Voltage B+ with ignition in ACC or

ON position and

wiper/washer switch OFF

Grey 391 Motor drive Voltage 0 volt with ignition in ACC

or ON position and

wiper/washer switch OFF

Brown/White 41 Power

source Voltage B+ with ignition in ACC or

ON position and

wiper/washer switch ON

Grey 391 Motor drive Voltage 0 volt with ignition in ACC

or ON position and

wiper/washer switch ON

CHECKING WIPER MOTOR OPERATION

1. Remove rear wiper arm, refer

3.2 REAR WIPER ARM in this Section.

2. Remove tailgate interior trim panel, refer

Section 1A4 REAR COMPARTMENT LID &

TAILGATE.

3. Use a jum per lead connected between battery

earth and the wiper mounting bracket and

earth lead (Brown wire).

4. Using a second jumper lead connected to

battery positive, touch jumper lead terminal to

Blue wire terminal of wiper motor connector.

Drive spindle of motor should rotate. If drive

spindle does not rotate, motor is faulty and

must be replaced.

Figure 12C-71

5. To check wiper motor PARKED operation,

connect a bridging wire between the Black and

Blue wires of the wiper motor connector.

Connect a jum per wire from battery positive to

Black wire to wiper motor connector, and wiper

motor spindle should rotate.

Disconnect bridging wire from Blue wire and

wiper motor should continue to rotate until it

reaches the PARK position.

If m otor does not park, the contacts within the

motor are faulty and therefore, the motor m ust

be replaced.

Figure 12C-72

CIRCUIT DIAGRAMS

Fig. 12C-73 shows the circuit for the rear

wiper/washer system for vehicles with Low Series

BCM and Fig. 12C-74 the circuit for the rear

wiper/washer system for vehicles with High Series

BCM.

Figure 12C-73

Figure 12C-74

3.9 TAILGATE WASHERS

REMOVE AND REINSTALL

Fig. 12C-75 illustrates the installation of the tailgate washer system.

The spray direction of the washer nozzle can be adjusted by inserting the point of a pin into the ball of the nozzle

and swivelling it to the position nominated in Fig. 12C-75.

CHECKING WASHER PUMP AND WIRING

As a common washer pump with dual outlets is used for the tailgate and windscreen washers, refer

3.7 WINDSHIELD WASHERS - CHECKING WASHER PUMP AND WIRING in this Section, for the procedure on

how to check the operation of the washer pump.

Figure 12C-75

4. HORN SERVICE OPERATIONS

4.1 HORN ASSEMBLY

REMOVE

1. From beneath vehicle, depending on which horn is to be removed, reach up between either the left - hand or

right - hand front wheelhouse panel and disconnect wiring harness connector/s from horn/s.

2. Unscrew horn/s attaching bolt and remove horn/s.

REINSTALL

Installation of the horn is the reverse of the removal procedure, noting the following:

1. Ensure connectors are installed correctly.

2. Ensure horn/s securing bolt/s are tightened to the correct torque specification.

HORN SECURING BOLT

TORQUE SPECIFICATION 15 - 35 Nm

Figure 12C-76

TEST

1. From beneath vehicle, reach up between bumper bar and front panel side support. Connect a voltmeter

between horn positive lead (Green wire) and vehicle body earth.

2. Activate horn and note reading:

No voltage indicates a fault in the horn actuator, wiring harness, relay or connections.

Less than 9 volts indicates resistance in circuit wiring or a short circuit in horn.

9 - 11 volts is normal.

Above 11 volts indicates an open circuit in horn.

HORN RELAY

The horn relay is located in the engine

compartment relay housing, refer Fig. 12C-77.

Figure 12C-77

HORN ACTUATOR

The horn pad is incorporated into the Supplem ental Restraint System (SRS) airbag inf lator module in the centre of

the steering wheel and therefore, is not serviced separately. For all SRS service operations, refer to

Section 12M (Version 6.2), SUPPLEMENTAL RESTRAINT SYSTEM or Section 12M (Version 8.0/8.1),

SUPPLEMENTAL RESTRAINT SYSTEM.

CAUTION:

If vehicle is equipped with SRS (AIRBAG), disable the system. Refer to ‘SUPPLEMENTAL RESTRAINT

SYSTEM, Section 12M - (Version 6.2) or Section 12M - (Version 8.0/8.1).

4.2 THEFT DE TE RRENT HORN

REMOVE

1. Disconnect wiring harness connector from

theft deterrent horn.

2. Unscrew horn attaching bolt and remove horn.

Figure 12C-78

REINSTALL

Reinstallation of the theft deterrent horn is the

reverse of the removal procedure, noting the

following:

1. Ensure connector is installed correctly.

2. Ensure theft deterrent horn securing bolt is

tightened to the correct torque specification.

THEFT DETERRENT HORN

SECURRING BOLT TORQUE

SPECIFICATION 20 - 27 Nm

TEST

1. Disconnect wiring harness connector from

theft deterrent horn. Connect a test light

between theft deterrent horn wiring harness

connector and vehicle body earth.

2. Remove theft deterrent horn relay and bridge

terminals 3, circuit 1340 to terminal 5, circuit

129. Test light should illuminate.

- OR -

Activate alarm system. Test light should flash.

If test light illuminates or flashes, it indicates a

faulty theft deterrent horn.

If test light does not illuminate or f lash, it indicates

a fault in BCM, wiring harness, relay or

connections, r efer to Section 12J-2 HIGH SERIES

BCM.

Figure 12C-79

THEFT DETERRENT HORN RELAY

The theft deterrent horn relay is located in the

engine compartment relay housing, refer Fig. 12C-

80.

Figure 12C-80

5. INSTRUMENT ASSEMBLY DIAGNOSTICS

5.1 BASIC KNOWLEDGE REQUIRED

Before attem pting to diagnose the com bined inst rument as sembly you m ust have a good unders tanding of elec tr ical

system basics and the use of circuit testing tools. Without this basic knowledge it will be difficult to use the

diagnostic procedures detailed in this Section.

Some electr ical basics, as well as basic troubles hooting procedures and hints as the use of circuit tes ting tools are

covered in Section 12P WIRING DIAGRAMS.

Basic Electrical Circuits - You should understand the basic theory of electricity, series and parallel circuits, and

voltage drops across series resistors. You should know the meaning of voltage (volts), current (amps), and

resistanc e (ohms). You should understand what happens in a circuit with an open or shorted wire (s horted either to

voltage or earth). You should also be able to read and understand a wiring diagram.

Additionally, a knowledge of AC theory including; inductance, capacitance and impedance would be useful.

Use of Circuit Testing Tools - You should know how to use a jumper lead to test c irc uits . You should be familiar with

the use of a high input im pedanc e (10 Mohm ) digital type multim eter such as Tool No. J 39200 or equivalent and be

able to measure voltage, current, and resistance. You should be familiar with the proper use of the TECH 2

Diagnostic Scan Tool.

NOTE:

All earth resistance checks done with a high impedance multimeter must be done with the vehicle’s battery

removed.

Techline

5.2 PRELIMINARY SYSTEM DIAGNOSIS

When investigating any complaint of a combined instrument assembly problem or malfunction, always begin

diagnosis with a circuit check, refer to 5.8 INSTRUMENT DIAGNOSTICS PROCEDURES, DIAGNOSTIC CIRCUIT

CHECK in this Section.

The diagnos tic circuit c heck is a preliminar y procedur e that check s to ensure the com bined ins trum ent assem bly is

communicating on the serial data line as well as helping to identify the problem.

5.3 INSTRUME NT CLUS TER DIAGNOSTICS

The instrument is equipped with a self-diagnostic capability that can detect and isolate instrument problems or

failures. W hen a fault is detected, the instrum ent cluster sets a diagnsotic trouble code (DTC) that represents that

particular problem or failur e. W hen DTC 24, 25 or 26 is set, an icon X is shown in the left-hand ins trument window

on high series vehicles, or SERV ERROR on low series..

Errors can be identified by using TECH 2 to test instruments and force values and conditions into the instrument

cluster. The results of these tests can be used to diagnose problems in the instrument assembly such as

inoperative bulbs and faulty gauges and switches.

Faults within other components can be identified after using TECH 2 to confirm correct operation of the

instruments. For example, if there was a reported fault with the speedometer gauge and TECH 2 diagnosed the

gauge as working correctly, then the fault would lie in the Powertrain Control Module or in the harness from the

speed sensor to the PCM, both of which would then require further testing.

It is important to note that an open circuit fuel (petrol) gauge sender unit is recognised by the instrument cluster self-

diagnosis as ‘t 00 – C’, whereas the TECH 2 Diagnosis Tool will recognise the same fault as DTC 3.

In some instanc es, a DTC may be permanently set. For example, a vehicle which is not f itted with ABS or ABS/ET C

will have DTC 8 permanently set. Similarly, a vehicle which is not fitted with LPG will have DTC 4 permanently set.

Some wiring changes have been made during production of the VT Series. Where these changes apply to the

instrument cluster diagnostics, they are shown as VT 1.5 Only on the diagrams included with the diagnostic charts.

TECH 2 DIAGNOSTIC TOOL USE WITH INTERMITTENCE

The TECH 2 Diagnostic T ool allows manipulation of wiring harnesses, while obser ving the TECH 2 Diagnostic Tool

readout. If the pr oblem seem s to be related to certain param eters that can be c hecked on the T ECH 2 Diagnostic

Tool, they should be checked while driving the vehicle. If there does not seem to be any connection between the

problem and any specif ic circuit, the T ECH 2 Diagnostic T ool can be used to m onitor each par ameter, watching f or

a period of time to see if there is any change in the readings that indicates intermittent operation.

The T ECH 2 Diagnostic Tool s aves tim e in diagnosis and helps to prevent the r eplacem ent of good parts . T he k ey

to using the TECH 2 Diagnostic Tool successfully is the technicians ability to understand the system being

diagnosed, as well as unders tanding the TECH 2 Diagnostic T ool operation and limitations . The technician s hould

read the TECH 2 operators manual to become familiar with the TECH 2 Diagnostic Tool operation.

With an understanding of the data which the tool displays, and knowledge of the circuits involved, the tool can be

very useful in obtaining information which would be more difficult or impossible to obtain with other equipment.

The TECH 2 Diagnostic Tool does not make the use of diagnostic charts unnecessary, nor can it indicate exactly

where a problem is in a particular circuit. Diagnostic Charts incorporate diagnosis procedures that require the use

of a TECH 2 Diagnostic Tool.

5.4 DIAGNOSING FAULTS NOT COVERED BY TECH 2 DIAG NOSTIC TOOL

Some components of the instrument assembly cannot be diagnosed by the TECH 2, although their operation can

be tested using the F4; Miscellanious Tests function of the TECH 2. These components must be dealt with

separately and include the following instrument tell-tale lamps:

•Fog lamps on lamp

•Cruise engaged lamp

•Low traction lamp

•ABS off lamp

•Park brake/brake fail warning lamp

•Generator lamp

•Turn signal indicator lamps

•High beam lamp

Fig 12C-81 illustrates the components of the instrument assembly which are exclusively not on the serial data line.

Figure 12C-81

WARNING LAMP APPLICATION CHART

The following table indicates the wiring configuration for the instrument cluster warning lamps.

NOTE:

Some lamps may not be installed in all models

LAMP CONFIGURATION SINGLE WINDOW

DISPLAY TRIPLE WINDOW

DISPLAY

High Beam HW X X

Left Turn HW X X

Right Turn HW X X

Shift Pattern SD X X

Overspeed INT X X

LPG SD – –

Air Bag SD X X

Gen Fail HW X X

Brake/Park Fail HW X X

Seat Belt INT X X

Oil Pressure SD X X

Rear Lamp Fail SD – X

High Temperature SD – X

Check Powertrain SD X X

ABS Off HW X X

Traction Off SD X

Low Traction HW X

Cruise SD X X

Cruise Active HW X X

Fog Lamps HW X X

Low Fuel INT X X

INT = Internal HW = Hard Wired SD = Serial Data

FUEL GAUGE SENDER

When investigating complaints regarding the operation of the fuel gauge, use the TECH 2 diagnostic tool to

ascertain whether the problem lies in the fuel sender or in the fuel gauge.

If the fuel gauge does not respond to any of the control tests, ie the gauge remains stationary below the empty

mark, then there may be a faulty connection between the fuel sender and the instrument assembly. Verify that these

connections are reliable before commencing any further diagnostic work.

To check the fuel sender, connect TECH 2 to the data link connector as detailed in 5.6 CONNECTING TECH 2

FOR SYSTEM DIAGNOSIS in this Section.

Refer to 5.9 USING TECH 2 TO DIAGNOSE THE INSTRUMENT ASSEMBLY in this Section to initiate the

diagnosis procedures. Select F1: Diagnostic Trouble Codes and then F0: Read DTC Information. If any trouble

codes have been logged by the fuel sender, these will appear as DTC 1, 2 or 3 for petrol, or as DTC 4, 5 or 6 for

LPG.

IMPORTANT:

An open circuit fuel gauge sender unit is shown as DTC 3 on TECH 2, whereas the instrument cluster diagnostic

mode display shows the same fault as t 00 – C.

If no diagnostic trouble codes relating to the fuel sender have been logged, the operation of the fuel gauge can be

checked by performing control tests, refer to 5.9 USING T ECH 2 T O DIAGNOSE THE INSTRUM ENT ASSEMBLY

in this Section to initiate the diagnosis pr ocedures. Select F4: Miscellaneous T ests and then F 7 Control Tes ts. Fuel

Gauge can be selected and it is possible to verify that the gauge operates accurately within the specified ranges.

If, when performing the control test, the fuel level indicated by the fuel gauge varies more than 3° than the

com manded fuel level (at em pty, half and full m arks) then the instrument as sembly will need to be replaced, and a

new one installed and programmed.

FOG LAMPS ON INDICATOR LAMP

A failure of the fog lamps on indicator lamp can be caused by any of the following:

•Faulty connection from fog lamp switch connector (Violet/Red).

•Faulty connection on pin 3 on the instrument assembly harness connector.

•A non-functioning fog lamps on indicator lamp bulb.

CRUISE ENGAGED LAMP

A failure of the cruise engaged warning lamp can be caused by any of the following:

•Faulty connection from the cruise c ontrol actuator harnes s connec tor (White) to instr ument harness connector

terminal 2, resulting in cruise engaged lamp failing to operate at all.

•A non-functioning cruise engaged lamp.

LOW TRACTION WARNING LAMP

•A failure of the low traction warning lamp can be caused by any of the following:

•Faulty connection f r om the ABS/ET C module harnes s c onnec tor ( Yellow/Red) to instrument harnes s c onnec tor

terminal 11, resulting in low traction lamp failing to operate at all.

•A non-functioning low traction warning lamp.

ABS OFF WARNING LAMP

The ABS off warning lamp is illuminated when the ABS or ABS/ETC module is disabled due to a fault with the

module. A failure of the ABS off warning lamp can be caused by any of the following:

•Faulty connection f r om the ABS/ET C module harnes s c onnec tor ( Yellow/Red) to instrument harnes s c onnec tor

terminal 9, resulting in low traction lamp failing to operate at all.

•A non-functioning ABS off warning lamp.

PARK BRAKE/BRAKE FAIL WA RNING LAMP

A failure of the park brake/brake warning lamp can be caused by any of the following:

•Faulty connection from the brake fail warning switch connector (Brown/Orange) to instrument harness

connector terminal 15, resulting in park brake/brake fail warning lamp activated only by the park brake switch.

•Faulty connection from the park brake switch connector (Brown/Orange) to instrument harness connector

terminal 15, resulting in park brake/brake fail warning lamp activated only by the brake fail warning switch.

•A non-functioning brake fail warning switch.

GENERATOR WARNING LAMP

A failure of the generator warning lamp can be caused by any of the following:

•Faulty connection from the generator harness c onnector ( Brown) to instrum ent harnes s c onnector term inal 14,

resulting in generator lamp failure to operate at all.

•Short circuit of Brown wire to earth between instrument harness connector and generator harness connector,

resulting in generator warning lamp continually on.

•A non-functioning generator warning lamp bulb.

TURN SIGNAL INDICATOR LAMPS

A failure in one or both of the turn signal indicator lamps can be caused by any of the following:

•Faulty connection from terminal 49aL (Light Blue) from the turn signal switch (characterised by left-hand turn

signals inoperative).

•Faulty connection from terminal 49aR (Blue) from the turn signal switch (characterised by right-hand turn

signals inoperative).

•Faulty connection on pins 8 (left-hand indicator bulb) or 1 (right-hand indicator bulb) on the instrument

assembly harness connector.

•A non-functioning turn signal lamp bulb.

HIGH BEAM INDICATOR LAMP

A failure of the high beam indicator lamp can be caused by any of the following:

•Faulty connection from terminal turn signal switch 1 connector (Blue/Yellow) from flash/dip switch.

•Faulty connection on pin 7 on the instrument assembly harness connector.

•A non-functioning high beam indicator lamp bulb.

5.5 SERIAL DATA COMMUNICATION

GENERAL INFORMATION

The VT Series Model uses a BUS MASTER communication system, where the BCM is the bus master.

The BCM periodically polls (surveys) each device on the bus and requests status data.

The devices connected are:

•Body Control Module (BCM)

•Powertrain Control Module (PCM)

•Electronic Climate Control (ECC)

•Instrument Cluster (INS)

•Anti-lock Brake (ABS) or Anti-lock Brake / Electronic Traction Control (ABS/ETC)

•Supplementary Restraint System (SRS)

•External diagnostic tool (TECH 2)

The data provided by each device may be utilised by any device connected to the bus.

Each device has a unique response Message Identifier Word (MIW) for ease of identification.

The bus m aster ( BCM) polls each device with a ser ial data mes sage which includes that device’s MIW . T he device

responds by putting a serial data message onto the bus which includes its MIW and data, which is retrieved and

utilised by any device requiring it.

The BCM polls each device for a status update, once ever y 300 m illiseconds . The exception to this being the PCM

which is polled twice every 300 milliseconds.

The TECH 2 diagnostic tool can be used to read serial data on the data bus and analyse faults in the instrument

assembly and its related components.

Figure 12C-82

5.6 CONNECTING TECH 2 FOR SYSTEM DIAGNOSIS

TECH 2, with the appropriate sof tware, c ables and

adaptors, when connected to the Data Link

Connector (DLC) is capable of reading the

combined instrument cluster serial data. The DLC

is connected to the instrument panel lower right

hand-trim, to the right of the steering column.

For additional general information on connecting

and operating TECH 2, refer to

Section 0C TECH 2.

Figure 12C-83

5.7 TECH 2 TEST MODES AND DISPLAYS FOR INSTRUMENT DIAGNOSIS

A prerequisite of this diagnostic section is for the

user to be familiar with the proper use of TECH 2.

The following illustrate 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

Section 0C TECH 2 or the TECH 2 USER’S

GUIDE.

W ith the ignition turned of f, connect the TECH 2 to

the Data Link Connector (DLC) using the DLC

Adaptor, refer to 5.6 CONNECTING T ECH 2 FOR

SYSTEM DIAGNOSIS in this Section.

MAIN MENU

Turn the ignition on and press the power button

(PWR) on the TECH 2.

The TECH 2 will perform a series of self-

diagnosing power on self tests (POST ). Once this

has been completed successfully, the TECH 2

startup screen will be displayed. Press the Enter

key to continue.

The Main Menu screen should look as follows.

Press the F0 function button or Select F0:

Diagnostics by using the arrow keys until F0:

Diagnostics is highlighted and press the Enter

key.

Figure 12C-84

MODEL YEAR

Select the appropriate Model Year and press

Enter.

Figure 12C-85

VEHICLE IDENTIFICATION MENU

Select the VT Commodore Vehicle Type and

press Enter.

Figure 12C-86

SYSTEM SELECTION MENU

Select F3: Body from the System Selection

Menu and press Enter.

Figure 12C-87

VEHICLE IDENTIFICATION MENU

Once F3: Body has been selected from the

selection menu, Instrument can be selected.

Select Instrument.

Figure 12C-88

SYSTEM IDENTIFICATION MENU

Turn the ignition on (as requested) and press

CONFIRM soft key to continue.

Figure 12C-89

The part number of the instrument cluster will be

displayed. Press the MORE soft key to display

more detailed information about the part.

Figure 12C-90

Press the CONFIRM soft key to confirm these

details.

Figure 12C-91

The vehicle Identification Number/TIS Hardware

Key Num ber will now be displayed. Press Conf irm

soft key to continue

Figure 12C-92

BODY MENU

This menu provides the TECH 2 user with acces s

to the various functions used to diagnose f aults in

the instrument assembly and its related

components. The six functions F0 to F5 are

explained in m or e detail in 5.9 USING TECH 2 T O

DIAGNOSE THE INSTRUMENT ASSEMBLY in

this Section.

F0: NORMAL MODE

The instrument normal mode data list is used to

view serial data being sent from the instrument

assembly

F1: DIAGNOSTIC TROUBLE CODES

In this mode Diagnostic Trouble Codes can be

read and cleared.

F2: DATA DISPLAY

In this test mode, TECH 2 displays the status of

inputs and outputs of the combined instrument

assembly.

F3: SNAPSHOT

In this test mode, the TECH 2 captures data

before and af ter a for ced m anual error. T his is not

applicable to instrument diagnostics.

F4: MISCELLANEOUS TESTS

In this test mode, the TECH 2 can test and

diagnose faults in the instrument assembly.

Telltale lamps and instrument gauges can be

tested in this mode.

F5: PROGRAM

Instruments and options can be programmed

when this mode is selected.

Figure 12C-93

5.8 INSTRUMENT DIAGNOSTICS

INTRODUCTION

The following charts are designed to provide fast and efficient fault location of the instruments. Each diagnostic

chart consists of: a ‘diagnostic chart’ and pertinent information including Diagnostic Trouble Code (DTC) setting

parameters and, in most charts, circuit diagrams.

W hen carrying out wiring checks as directed by the diagnostic charts, rather than probe terminals and connectors

with incorrect s ized m ultimeter connections, use the adaptors contained in connector tes t adaptor k it KM-609. T his

is will prevent any possibility of spreading or damaging wiring harness terminals which may later cause a system

intermittent failure. The following illustration shows the test lead set (KM-609-20) being used to check the SRS

wiring harness.

Figure 12C-94

DIAGNOSTIC CIRCUIT CHECK

CIRCUIT DESCRIPTION:

When investigating any complaint of a combined instrument assembly problem or malfunction, always begin

diagnosis with the following diagnostic circuit check. This check is a preliminary procedure that checks to ensure the

com bined instrument assem bly is communicating on the serial data line as well as helping to identify a problem or

malfunction and directing the reader to the appropriate diagnostic chart in this Section.

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 maybe open or shorted.

There are several other control modules that are connected to the serial data line (PCM, BCM, ABS or ABS/ETC,

ECC and SRS). ANY one of these contr ol m odules could c ause a f ault on the serial data line. T his f ault could r esult

in TECH 2 not being able to display serial data.

STEP ACTION VALUE YES NO

1. •Turn the ignition on.

•Do any instrument

assembly warning lamps

illuminate?

Go to Step 5. Go to Step 2.

2. •Check instrument cluster

fuses F11, F13 and F21 in

instrument panel

compartment.

•Are any fuses blown?

Replace blown

fuses.

Recheck and

verify repair.

Go to Step 3.

STEP ACTION VALUE YES NO

3. •Check continuity of circuit

155 (Black/Yellow wire)

between instrument

assembly connector YB66

and a known good earth.

•Is there continuity?

Go to Step 4. Check and repair

open in

circuit 155.

4. •With ignition ON, check for

voltage at instrument

cluster connector YB66,

terminals 19 and 20.

•Is voltage as specified?

B+ Replace

instrument

cluster,

refer to 2.1

INSTRUMENT

CLUSTER in this

Section.

Check and repair

circuits 44 and/or

1340 as necessary.

5. •Turn the ignition off

•Connect TECH 2 to DLC.

•Turn the ignition on.

•Push power button on

TECH 2.

•Does TECH 2 power up?

Go to Step 6. Refer to Section

0C - TECH 2.

6. •At the TECH 2 title screen

press the Enter key.

•Select Diagnostics \ 1998 \

VT Commodore \ Body \

Instrument.

•Does TECH 2 display

Instrument System

Identification (ie. Part

Number)?

Go to Step 7. Go to DTC-14

No Serial

Communication. in

this Section.

7. •With TECH 2 still

connected and instruments

selected, select Diagnostic

Trouble Codes.

•Does TECH 2 display any

DTC’s?

Refer to

corresponding

diagnostic chart.

Refer to 5.4

DIAGNOSING

FAULTS NOT

COVERED BY

TECH2

DIAGNOSING

TOOL in this

Section

WHEN A LL DIAGNOSIS AND REPAIRS ARE COMPLETED, CLEAR ALL DTC AND

VERIFY CORRECT OPERATION

NO SERIAL DATA COMMUNICATION

CIRCUIT DESCRIPTION:

When investigating any complaint of an Instrument problem or malfunction, always begin diagnosis with the

diagnostic circuit check. This check is a preliminary procedure that checks to ensure the Instruments are

communicating on the serial data line as well as helping to identify a problem or malfunction and directing the

reader to the appropriate diagnostic chart in this section.

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.

There are several other control modules that are connected to the serial data line (PCM, BCM, ABS/ASR,

instruments and SDM). 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.

TEST DESCRIPTION:

Number(s) below refer to step number(s) in the following diagnostic chart.

1. Ensures the Diagnostic Circuit Check has been performed.

2. Determines if there is a fault in the serial data circuit (1221) between the BCM and PCM.

3. Checks if fault is common with other control modules connected to the serial data circuit.

4. Checks internal switch in BCM for open circuit.

5. Checks circuit 1220 and determines if fault is in wiring or a control module.

6. Checks circuit 1220 for open circuit.

7. Checks integrity of earth circuits for the instruments.

DIAGNOSTIC AIDS:

A fault with the serial data circuit could be caused by one or m ore of the several contr ol modules connec ted to this

serial data circuit. Isolate the fault by disconnecting each control module, one at a time, until serial data

communication is restored.

STEP ACTION VALUE YES NO

1•Was the Diagnostic Circuit

Check performed? Go to Step 2. Go to

DIAGNOSTIC

CIRCUIT CHECK

in this Section.

2•Connect TECH 2 to the

DLC.

•Select Body / DTC Check /

DTC Check.

•Can TECH 2

communicate with the

BCM and PCM?

NOTE:

If “No Data” is displayed next

to the BCM or PCM, then

there is no communication

between TECH and these

control modules.

Go to Step 3. Go to BCM Serial

Data

Communication

diagnostics in

Section 12J-2

HIGH SERIES

BCM.

3•In Step 2, was TECH 2

able to communicate with

all the other control

modules, except the

Instruments, fitted to the

vehicle (ABS, ECC, SRS)?

NOTE:

If “No Data” is displayed next

to a control module, then

there is no communication

between TECH 2 and that

control module.

Go to Step 6. Go to Step 4.

STEP ACTION VALUE YES NO

4•Using an ohmmeter,

check continuity of circuits

1220 (Green/White wire)

and 1221 (Red/Black wire)

between BCM connector

YB164, terminals 2 and 3

(Low Series BCM) or

YB175, terminals 2 and 9

(High Series BCM).

•Does continuity exist?

Go to Step 5. Replace BCM,

refer to

Section 12J-2

LOW SERIES

BCM or

Section 12J-2

HIGH SERIES

BCM.

5•Check circuit 1220 for

open, short to earth or

short to voltage between

BCM and individual control

modules

•Is circuit 1220 okay?

NOTE:

Disconnect each control

module in circuit 1220 one at a

time to isolate the fault in the

circuit or to identify the control

module causing the fault.

Replace faulty

control module as

necessary, refer

to relevant

Section. Recheck

and verify repair.

Repair circuit 1220

as necessary.

Recheck and verify

repair.

6•Using an ohmmeter,

check for continuity

between BCM connector

YB164, terminal 3 (Low

Series BCM) or YB175,

terminal 9 (High Series

BCM) and instruments

connector YB66, terminal

12 (Green/White wire).

•Does continuity exist?

Go to Step 7. Repair open in

circuit 1220.

Recheck and verify

repair.

7•Check the integrity of the

Instruments earth circuit

by performing a voltage

drop on circuit 155

between instrument

connector YB66, terminal

6 and earth point E3.

•With ignition on, is voltage

less than the specified

value?

0.15 Volts Replace

instrument cluster

assembly, refer to

2.1

INSTRUMENT

CLUSTER in this

Section.

Repair earth circuit

as necessary.

Recheck and verify

repair

WHEN A LL DIAGNOSIS AND REPAIRS ARE COMPLETED, CLEAR ALL DTC AND

VERIFY CORRECT OPERATION

DTC 1 FUEL GAUGE SENDER UNIT- SHORT CIRCUIT:

CIRCUIT DESCRIPTION

IMPORTANT:

Instrument diagnostics for the fuel gauge sender unit were disabled in vehicle production commencing 18th April

1998. Revised software will be available in october 1998.

The instrument assembly supplies a 12 volt reference voltage and an earth circuit to the fuel gauge sender unit. The

fuel sender provides a resistance value to the instrument assembly based on its position relative to the fuel level.

The fuel sender resistance will vary between 37.5 ohms and 253.3 ohms from no fuel in the tank to full tank.

DTC 1 WILL SET IF:

•The fuel sender resistance is less than 7.4 ohms for a period of 20 seconds. The DTC will reset when the fuel

sender resistance returns to its normal operating range for a period of 60 seconds.

When a DTC 1 is set the fuel gauge will display the fuel tank level as empty irrespective of actual fuel level.

TEST DESCRIPTION:

Number(s) below refer to step number(s) in the following diagnostic chart.

2-4. Use of T ECH 2 to view data being sent f rom f uel s ender. If voltage is not within corr ect operating s pec if ic ations

then there is either an open circ uit, short circ uit or a faulty fuel sender. If open- or short-circ uit then check s will

be made to locate the circuit interruption.

5. Use of TECH 2 to drive the gauge on the instrument assembly to verify that gauge is functioning correctly.

6. W ith the fuel sender disconnected, the fuel sender signal resistance value should be between 37.5 and 253.3

ohms, which is dependant on fuel level.

7. Continuity check of harness between voltage circuit 30 and earth circuit 155 at harness connector YB74 will

indicate a short circuit in harness between YB74 and instrument assembly.

8. Continuity check of harness between voltage circuit 30 and earth circuit 155 at harness connector YR32 will

indicate a short circuit in harness between YB74 and YR32.

9. Removal of fuel tank allows acces s to fuel sender . Continuity c heck of harness between voltage circuit 30 and

earth circuit 155 at harness connector YR44 will indicate a short circuit in harness between YR32 and YR44,

otherwise there is a fault in the fuel sender.

DIAGNOSTIC AIDS:

The T ECH 2 diagnostic tool reads fuel sender pos ition as a voltage between 0 and 12 volts. The f uel sender signal

resistance should be between 37.5 to 253.3 ohms when the fuel sender is functioning correctly. The fuel sender

voltage should increase at a steady rate as the fuel level increases.

The multimeter allows continuity of the wiring harness to be checked. Harness voltage can also be confirmed at

connector locations.

Check for any damage to the harness which could cause an intermittent open or short to earth or backed-out

terminals at the instrument assembly connectors, broken connector locks, improperly formed or damaged terminals.

STEP ACTION VALUE YES NO

1. •Has diagnostic circuit test

been carried out? Go to Step 2. Go to Diagnostic

Circuit Check in

this Section.

2. •Connect TECH 2 to DLC.

•Select 1998 \ VT

Commodore \ Diagnostics

\ Body \ Instrument \ Data

Display \ Instrument.

•Check the petrol sender

signal

•Is Petrol sender signal

voltage 0V?

Short circuit from

fuel sender to

instrument

cluster,

go to Step 5.

Go to Step 3.

3. •Is Petrol Sender signal

voltage 5V? Open circuit from

fuel sender to

instrument

cluster,

go to Step 5

Go to Step 4.

4. •Is Petrol Sender Input

voltage between 0V and

5V?

Go to Step 5. Replace fault fuel

sender faulty.

Refer to Section 8A

FUEL TANK.

5. •Using TECH 2, run Control

Tests, refer to 5.14 F4:

MISCELLANEOUS TEST

in this Section.

•Does the fuel gauge

operate correctly?

Go to Step 6. Replace instrument

cluster, refer to 2.1

INSTRUMENT

CLUSTER in this

section

6. •Disconnect battery.

•Disconnect fuel tank

harness from body

harness connector YR32

located under the rear of

vehicle.

•Using multimeter, check

resistance across fuel tank

sender circuits 30 (BR)

and 155 (Black/Yellow) on

fuel tank harness.

•Is resistance within

specified range?

Between

37.5

ohms and

253.3

ohms

Go to Step 7. Replace faulty fuel

sender, refer to

Section 8A

FUEL TANK..

STEP ACTION VALUE YES NO

7. •Using multimeter check

continuity between main

wiring harness circuit 155

(Black/Yellow) and circuit

30 (Tan wire) at connector

YB74 in the passenger

compartment.

•Is there continuity?

Short circuit in

main wiring

harness between

YB74 and YB66,

repair harness.

Go to Step 8.

8. •Using multimeter check

continuity between body

harness circuit 155

(Black/Yellow) and circuit

30 (Brown wire) at

connector YR32 under the

vehicle.

•Is there continuity?

Short circuit in

body harness

between YR32

and YB74, repair

harness.

Go to Step 9.

9. •Drain and remove fuel tank,

refer Section 8A FUEL

TANK.

•Using multimeter check

continuity between body

harness circuit 155

(Black/Yellow) and circuit

30 (Brown wire) at

connector YR44 under the

vehicle.

•Is there continuity?

Short circuit in

body harness

between YR44

and YR32, repair

harness.

Replace faulty fuel

sender, refer to

Section 8A FUEL

TANK.

10. •Use TECH 2 to clear DTC.

•Has DTC cleared?

End of diagnostic

checking. Refer to

corresponding

diagnostic chart.

WHEN A LL DIAGNOSIS AND REPAIRS ARE COMPLETED, CLEAR ALL DTC AND

VERIFY CORRECT OPERATION

DTC 2 FUEL GAUGE SENDER UNIT - INTERMITTENT

CIRCUIT DESCRIPTION:

IMPORTANT:

Instrument diagnostics for the fuel gauge sender unit were disabled in vehicle production commencing 18th April

1998. Revised software will be available in october 1998.

The instrument assembly supplies a 12 volt reference voltage and an earth circuit to the fuel sender. The fuel

sender provides a resistance value to the instrument assembly based on its position relative to the fuel level. The

fuel sender resistance will vary between 37.5 ohms and 253.3 ohms from no fuel in the tank to full tank.

DTC 2 WILL SET IF:

•There is an intermittent fault in the connection between the fuel sender and the instrument cluster. The DTC is

set when the fuel sender resistance is greater than 260 ohm s for 2 seconds or if the fuel sender resistance is

less than 37.5 ohm s f or 2 seconds. T he DTC is reset when the fuel sender is detec ted as being open cir cuit or

short circuit or the sender is within its normal operating range for a period of 60 seconds.

TEST DESCRIPTION:

Number(s) below refer to step number(s) in the following diagnostic chart.

2-4. Use of T ECH 2 to view data being sent f rom f uel s ender. If voltage is not within corr ect operating s pec if ic ations

then there is either an open circ uit, short circ uit or a faulty fuel sender. If open- or short-circ uit then check s will

be made to locate the circuit interruption.

5. Use of TECH 2 to drive the gauge on the instrument assembly to verify that gauge is functioning correctly.

6-9. Tes t driving the car and m anipulating the harness es while viewing the serial data sent fr om the fuel sender will

indicate the presenc e of a c irc uit inter ruption as the voltage will fluc tuate in the event of an open c irc uit or s hort

circuit.

Additionally, viewing the DTC will indicate the presence of the intermittent fault if triggered by manipulating the

relevant harness.

DIAGNOSTIC AIDS:

By manipulating the harnesses at the various connectors it is possible to isolate the cause of the circuit interruption.

By working through the chart in the specified order it is possible to work out which harness contains the fault. This

harness can then be removed and repaired.

The TECH 2 diagnostic tool reads fuel sender position as a voltage between 0 and 12 volts. The fuel sender signal

resistance should be between 37.5 to 253.3 ohms when the fuel sender is functioning correctly. The fuel sender

voltage should increase at a steady rate as the fuel level increases.

The multimeter allows continuity of the wiring harness to be checked. Harness voltage can also be confirmed at

connector locations.

Check for any damage to the harness which could cause an intermittent open or short to earth or backed out

terminals at the instrument assembly connectors, broken connector locks, improperly formed or damaged terminals.

STEP ACTION VALUE YES NO

• Was the Diagnostic Circuit

Check performed? Go to Step 2. Go to Diagnostic

Circuit Check in

this Section.

2. •Connect TECH 2 to DLC.

•Select 1998 \ VT

Commodore \ Diagnostics

\ Body \ Instrument \ Data

Display \ Instrument.

•Check the petrol sender

signal.

•Is petrol sender Input

voltage 0V?

Short circuit from

fuel sender to

instrument

cluster,

go to Step 5.

Go to Step 3.

3. •Is petrol sender signal

voltage 5V? Open circuit from

fuel sender to

instrument

cluster,

go to Step 5.

Go to Step 4.

4. •Is petrol sender signal

voltage between 0V and

5V?

Go to Step 5. Replace faulty fuel

sender, refer to

Section 8A FUEL

TANK. .

5. •Using TECH 2, run Control

Tests,

refer to 5.14 F4:

MISCELLANEOUS TEST

in this Section.

•Does the fuel gauge

operate correctly?

Go to Step 6. Replace instrument

cluster. Refer to

2.1 INSTRUMENT

CLUSTER in this

section.

STEP ACTION VALUE YES NO

6. •Clear DTC 2 by selecting

Diagnostics \ 1998 \ VT

Commodore \ Body \

Instrument \ Diagnostic

Trouble Codes \ Clear

DTC Information.

•Turn ignition off then on.

•Select Diagnostics \ 1998 \

VT Commodore \ Body \

Instrument \ Data Display \

Instrument and view petrol

sender signal data.

•Take vehicle for a test

drive and monitor the

petrol sender signal.

•Did the voltage of the

petrol sender signal vary

during the manipulations,

•Did DTC 2 set again?

Repair faulty

main wiring

harness.

Go to Step 7.

7. •Clear DTC 2 by selecting

Diagnostics \ 1998 \ VT

Commodore \ Body \

Instrument \ Diagnostic

Trouble Codes \ Clear

DTC Information.

•Turn ignition off then on.

•Select Diagnostics \ 1998 \

VT Commodore \ Body \

Instrument \ Data Display \

Instrument and view petrol

sender signal data.

•Have assistant manipulate

harness at connector YB74

in the passenger

compartment to induce an

intermittent fault.

•Did the voltage of the

petrol sender signal vary

during the manipulations,

•Did DTC 2 set again?

Repair faulty

body harness or

faulty main wiring

harness.

Go to Step 8.

8. •Have assistant manipulate

harness at connector

YR32 under the vehicle to

induce an intermittent fault.

•Did the voltage of the

petrol sender signal vary

during the manipulations,

•Did DTC 2 set again?

Repair faulty

body harness or

faulty fuel tank

harness.

Go to Step 9.

STEP ACTION VALUE YES NO

9. •Drain and remove fuel

tank, refer to Section 8A

FUEL TANK.

•Have assistant manipulate

harness at connector

YR44 under the vehicle to

induce an intermittent fault.

•Did the voltage of the

petrol sender signal vary

during the manipulations,

•Did DTC 2 set again?

Repair faulty fuel

tank harness. Repair faulty fuel

sender. Refer to

Section 8A FUEL

TANK.

10. •Use TECH 2 to clear DTC.

•Has DTC cleared.

End of diagnostic

checking. Refer to

corresponding

diagnostic chart.

WHEN A LL DIAGNOSIS AND REPAIRS ARE COMPLETED, CLEAR ALL DTC AND

VERIFY CORRECT OPERATION

DTC 3 FUEL SENDER - OPEN CIRCUIT

CIRCUIT DESCRIPTION:

IMPORTANT:

Instrument diagnostics for the fuel gauge sender unit were disabled in vehicle production commencing 18th April

1998. Revised software will be available in october 1998.

The instrument assembly supplies a 12 volt reference voltage and an earth circuit to the fuel sender. The fuel

sender provides a resistance value to the instrument assembly based on its position relative to the fuel level. The

fuel sender resistance will vary between 37.5 ohms and 256.3 ohms from no fuel level in the tank to full tank level.

IMPORTANT:

An open circuit f uel gauge s ender unit is s hown as DT C 3 on the TECH 2, whereas the instr ument clus ter diagnos is

mode display shows the same fault as ‘t 00 – C’.

DTC 3 WILL SET IF:

•The f uel sender c ircuit provides a resis tance above 260 ohms f or a dur ation longer than 20 sec onds. T he DT C

will reset when the fuel sender resistances return to its normal operating range for a period of 60 seconds.

When a DTC 3 is set the fuel gauge will display the fuel tank level as empty irrespective of actual fuel level.

TEST DESCRIPTION:

Number(s) below refer to step number(s) in the following diagnostic chart.

2-4. Use of T ECH 2 to view data being sent f rom f uel s ender. If voltage is not within corr ect operating s pec if ic ations

then there is either an open circ uit, short circ uit or a faulty fuel sender. If open- or short-circ uit then check s will

be made to locate the circuit interruption.

5. Use of TECH 2 to drive the gauge on the instrument assembly to verify that gauge is functioning correctly.

6. W ith the f uel sender disc onnected, the fuel sender signal resistanc e value should be between 37.5 and 253.3

ohms, which is dependant on fuel level.

7. Probing circuit 155 with a m ultim eter c onnected to body earth check s the f uel sender earth circ uit at connector

YR32.

8. Probing circuit 155 with a m ultim eter c onnected to body earth check s the f uel sender earth circ uit at connector

YB74.

9. Probing circuit 30 with a multimeter connected to B+ checks the fuel sender voltage circuit at connector YR32.

10. Probing circuit 30 with a multimeter connected to B+ checks the fuel sender voltage circuit at connector YB74.

11. Removing fuel tank to gain access to fuel sender enables fuel tank harness, which can then be checked for

continuity at each end (ie, no circuit breaks).

DIAGNOSTIC AIDS:

The TECH 2 diagnostic tool reads fuel sender position as a voltage between 0 and 12 volts. The fuel sender signal

resistance should be between 37.5 to 253.3 ohms when the fuel sender is functioning correctly. The fuel sender

voltage should increase at a steady rate as the fuel level increases.

The multimeter allows continuity of the wiring harness to be checked. Harness voltage can also be confirmed at

connector locations.

Check for any damage to the harness which could cause an intermittent open or short to earth or backed-out

terminals at the instrument assembly connectors, broken connector locks, improperly formed or damaged terminals.

STEP ACTION VALUE YES NO

• Was the Diagnostic Circuit

Check performed? Go to step 2. Go to Diagnostic

Circuit Check in

this Section.

2. •Connect TECH 2 to DLC.

•Select 1998 \ VT

Commodore \ Diagnostics

\ Body \ Instrument \ Data

Display \ Instrument.

•Check the petrol sender

signal.

•Is petrol sender signal

voltage 0V?

Short circuit from

fuel sender to

instrument

cluster,

go to Step 5.

Go to Step 3.

3. •Is petrol sender signal

voltage 5V? Open circuit from

fuel sender to

instrument

cluster,

go to Step 5.

Go to Step 4.

4. •Is petrol sender signal

voltage between 0V

and 5V?

Go to Step 5. Replace faulty fuel

sender, refer to

Section 8A FUEL

TANK.

5. •Using TECH 2, run Control

Tests,

refer to 5.14 F4:

MISCELLANEOUS TEST

in this Section.

•Does the fuel gauge

operate correctly?

Go to Step 6. Replace instrument

cluster. Refer to

2.1 INSTRUMENT

CLUSTER.

6. •Disconnect battery.

•Disconnect fuel tank

harness from body

harness connector YR32

located under the rear of

the vehicle.

•Using an ohmmeter, check

resistance across fuel tank

sender circuits 30 (Brown

wire) and 155

(Black/Yellow w ire) on fuel

tank harness.

•Is resistance within

specified range?

Between

37.5 ohms

and 253.3

ohms

Go to Step 7. Replace faulty fuel

sender, refer to

Section 8A FUEL

TANK.

STEP ACTION VALUE YES NO

7. •Using an ohmmeter check

continuity of body harness

circuit 155 (Black/Yellow

wire) connector YR32 to

body earth using suitable

body earth location.

•Is there continuity?

Go to Step 9. Go to Step 8.

8. •Using an ohmmeter check

continuity of body harness

circuit 155 (Black/Yellow

wire) connector YB74 to

body earth using suitable

body earth location.

Is there continuity?

Repair open

circuit between

connectors YR32

and YB74.

Repair open circuit

between YB74 and

YE114.

9. •Using a multimeter check

voltage across circuit 30

(Brown wire) at connector

YR32 to suitable body

earth location.

•Is voltage as specified?

+12V Go to Step 11. Go to Step 10.

10. •Using a multimeter check

voltage of body harness

circuit 30 (Tan wire) at

connector YB74 to suitable

body earth location.

•Is voltage as specified?

+12V Repair open

circuit between

connectors YR32

and YB74.

Repair open circuit

between

connectors

YB74 and YB66.

11. •Drain and remove fuel

tank, refer to Section 8A

FUEL TANK.

•Using an ohmmeter, check

for continuity of fuel tank

harness at YR44 between

circuits 155 (Black/Yellow

wire) and 30 (Brown wire).

•Is there continuity?

Go to Step 13. Go to Step 12.

12. •Disconnect fuel sender

harness from fuel sender.

•Using an ohmmeter, check

continuity across fuel

sender.

•Is there continuity?

Repair open

circuit in fuel tank

harness.

Replace faulty fuel

sender. Refer to

Section 8A FUEL

TANK.

13. •Use TECH 2 to clear DTC.

•Has DTC cleared?

End of diagnostic

checking. Refer to

corresponding

diagnostic chart.

WHEN A LL DIAGNOSIS AND REPAIRS ARE COMPLETED, CLEAR ALL DTC AND

VERIFY CORRECT OPERATION

DTC 4 LPG GAUGE SENDER UNIT - OPEN CIRCUIT

CIRCUIT DESCRIPTION:

The instrument assembly supplies a 12 volt reference voltage and an earth circuit to the LPG gauge sender unit.

The LPG sender provides a resistance value to the instrument assembly based on its position relative to the LPG

level. The LPG sender resistance will vary betw een 37.5 ohms and 256.3 ohms from no LPG in the tank to full tank.

NOTE:

If a vehicle is not fitted with LPG, DTC 4 will always be set.

DTC 4 WILL SET IF:

• The LPG sender circuit provides a resistance above 260 ohms for a duration longer than 20 seconds. The

DTC is reset when the LPG sender resistance returns to its normal operating range for a period of 60 seconds.

When a DTC 4 is set the LPG gauge will display the LPG tank level as empty when LPG mode is selected

irrespective of actual fuel level.

TEST DESCRIPTION:

Number(s) below refer to step number(s) in the following diagnostic chart.

2-4. Use of TECH 2 to view data being sent from LPG sender. If voltage is not within correct operating

specifications then there is either an open circuit, short circuit or a faulty LPG sender. If open- or short-circuit

then checks will be made to locate the circuit interruption.

5. Use of TECH 2 to drive the gauge on the instrument assembly to verify that gauge is functioning correctly.

6. With the LPG sender disconnec ted, the LPG sender signal r esis tanc e value should be between 37.5 and 253.3

ohms, which is dependant on LPG level.

7. Probing circuit 155 with a multimeter connected to body earth checks the LPG sender earth circuit at

connector YB51.

8. Probing circuit 155 with a multimeter connected to body earth checks the LPG sender earth circuit at

connector YE110.

9. Probing circuit 1030 with a multimeter connected to B+ checks the LPG sender voltage circuit at

connector YB51.

10. Probing circuit 1030 with a multimeter connected to B+ checks the LPG sender voltage circuit at

connector YE112.

11. Enables the LPG tank harness to be checked for continuity at both ends.

DIAGNOSTIC AIDS:

The TECH 2 diagnostic tool reads LPG sender position as a voltage between 0 and 12 volts. The LPG sender

signal resistance should be between 37.5 to 253.3 ohms when the LPG sender is functioning correctly. The LPG

sender voltage should increase at a steady rate as the LPG level increases.

The multimeter allows continuity of the wiring harness to be checked. Harness voltage can also be confirmed at

connector locations.

Check for any damage to the harness which could cause an intermittent open or short to earth or backed out

terminals at the instrument assembly connectors, broken connector locks, improperly formed or damaged terminals.

STEP ACTION VALUE YES NO

• Was the Diagnostic Circuit

Check performed? Go to step 2. Go to Diagnostic

Circuit Check in

this Section.

2. •Connect TECH 2 to DLC.

•Select 1998 \ VT

Commodore \ Diagnostics

\ Body \ Instrument \ Data

Display \ Instrument.

•Check the LPG Sender

Input.

•Is LPG Sender Input

voltage 0V?

Short circuit from

LPG sender to

instrument

cluster,

go to Step 5.

Go to Step 3.

3. •Is LPG Sender Input

voltage 5V? Open circuit from

LPG sender to

instrument

cluster,

go to Step 5.

Go to Step 4.

4. •Is LPG Sender signal

voltage between 0V and

5V?

Go to Step 5. Replace faulty LPG

sender, refer to

Section 2 - VT

Sedan with

production LPG or

Section 2A - VT

Sedan with

accessory LPG &

VT Wagon with

production LPG.

5. •Using TECH 2, run Control

Tests, refer to 5.14 F4:

MISCELLANEOUS TEST

in this Section.

•Does the fuel gauge

operate correctly?

Go to Step 6. Replace instrument

cluster. Refer to

2.1 INSTRUMENT

CLUSTER in

this section.

6. •Disconnect battery.

•Disconnect LPG tank

harness from body

harness YB51 located in

the left-hand footwell.

•Using an ohmmeter, check

resistance across LPG

sender circuits 1030

(Yellow wire) and 155

(Black/Yellow wire) on LPG

tank harness.

•Is resistance within

specified range?

Between

37.5 ohms

and 253.3

ohms

Go to Step 7. Replace faulty LPG

sender, refer to

Section 2 - VT

Sedan With

Production LPG or

Section 2A - VT

Sedan With

Accessory LPG &

VT Wagon With

Production LPG.

STEP ACTION VALUE YES NO

7. •Using an ohmmeter, check

continuity of body harness

circuit 155 (Black/Yellow

wire) connector YB51 to

body earth using suitable

body earth location.

•Is there continuity?

Go to Step 9. Go to Step 8.

8. •Using an ohmmeter, check

continuity of body harness

circuit 155 (Black/Yellow

wire) at connector YE110

to suitable body earth

location.

•Is there continuity?

Repair open

circuit between

connectors YB51

and YE110.

Repair open circuit

between YE110

and YE114.

9. •Using a multimeter check

voltage across circuit 1030

(Yellow wire) at connector

YB51 to suitable body

earth location..

•Is voltage specified?

+12V Go to Step 11. Go to Step 10.

10. •Using a multimeter check

voltage of body harness

circuit 1030 (Yellow wire)

at connector YE112 to

suitable body earth

location.

•Is voltage specified?

+12V Repair open

circuit between

connectors YB51

and YE112.

Repair open circuit

between YE112

and YB66.

11. •Using an ohmmeter, check

for continuity of LPG tank

harness at YR50 between

circuits 155 (Black/Yellow

wire and 1030 (Yellow

wire).

•Is there continuity?

Go to Step 13. Go to Step 12.

12 •Disconnect LPG sender

harness from LPG sender.

•Using an ohmmeter, check

continuity across LPG

sender.

•Is their continuity?

Repair open

circuit in LPG

tank harness.

Replace faulty LPG

sender, refer to

Section 2 - VT

Sedan With

Production LPG or

Section 2A - VT

Sedan With

Accessory LPG &

VT Wagon With

Production LPG.

13. •Use TECH 2 to clear DTC.

•Has DTC cleared?

End of diagnostic

checking. Refer to

corresponding

diagnostic chart.

WHEN A LL DIAGNOSIS AND REPAIRS ARE COMPLETED, CLEAR ALL DTC AND

VERIFY CORRECT OPERATION

DTC 5 LPG GAUGE SENDER UNIT - SHORT CIRCUIT

CIRCUIT DESCRIPTION:

The instrument assembly supplies a 12 volt reference voltage and an earth circuit to the LPG gauge sender unit.

The LPG sender provides a resistance value to the instrument assembly based on its position relative to the LPG

level. The LPG sender resistance will vary betw een 37.5 ohms and 253.3 ohms from no LPG in the tank to full tank.

DTC 5 WILL SET IF:

•The LPG sender resistance is less than 7.4 ohms for a period of 20 seconds. The DTC is reset when the LPG

sender resistance returns to its normal operating range for a period of 60 seconds. After this tim e the DTC will

be logged as a History DTC.

When a DTC 4 is set the LPG gauge will display the LPG tank level as empty when LPG mode is selected

irrespective of actual fuel level.

TEST DESCRIPTION:

Number(s) below refer to step number(s) in the following diagnostic chart.

2-4. Use of TECH 2 to view data being sent from LPG sender. If voltage is not within correct operating

specifications then there is either an open circuit, short circuit or a faulty LPG sender. If open- or short-circuit

then checks will be made to locate the circuit interruption.

5. Use of TECH 2 to drive the gauge on the instrument assembly to verify that gauge is functioning correctly.

6. With the LPG sender disconnec ted, the LPG sender signal r esis tanc e value should be between 37.5 and 253.3

ohms, which is dependant on LPG level.

7. Continuity check of harness between voltage circuit 1030 and earth circuit 155 at harness connectors

YB110/YB112 will indicate a short circuit in harness between YE112 and instrument cluster.

8. Continuity check of har ness between voltage circuit 1030 and ear th circuit 155 at harness connector YB51 will

indicate a short circuit in harness between YB51 and YE112.

9. Continuity check of har ness between voltage circuit 1030 and ear th circuit 155 at harnes s connector YR50 will

indicate a short circuit in harness between YR50 and YB51, otherwise there is a fault in the LPG sender.

DIAGNOSTIC AIDS:

The TECH 2 diagnostic tool reads LPG sender position as a voltage between 0 and 12 volts. The LPG sender

signal resistance should be between 37.5 to 253.3 ohms when the LPG sender is functioning correctly. The LPG

sender voltage should increase at a steady rate as the LPG level increases.

The multimeter allows continuity of the wiring harness to be checked. Harness voltage can also be confirmed at

connector locations.

Check for any damage to the harness which could cause an intermittent open or short to earth or backed out

terminals at the instrument assembly connectors, broken connector locks, improperly formed or damaged terminals.

STEP ACTION VALUE YES NO

• Was the Diagnostic Circuit

Check performed? Go to Step 2. Go to Diagnostic

Circuit Check in

this Section.

2. •Connect TECH 2 to DLC.

•Select 1998 \ VT

Commodore \ Diagnostics

\ Body \ Instrument \ Data

Display \ Instrument.

•Check the LPG Sender

signal.

•Is LPG Sender signal

voltage 0V?

Short circuit from

LPG sender to

instrument

cluster,

go to Step 5.

Go to Step 3.

3. •Is LPG Sender signal

voltage 5V? Open circuit from

LPG sender to

instrument

cluster,

go to Step 5.

Go to Step 4.

4. •Is LPG Sender signal

voltage between 0V and

5V?

Go to Step 5. Replace faulty LPG

sender, refer to

Section 2 - VT

Sedan With

Production LPG or

Section 2A - VT

Sedan With

Accessory LPG &

VT Wagon With

Production LPG.

5. •Using TECH 2, run Control

Tests, refer to 5.14 F4:

MISCELLANEOUS TEST

in this Section.

•Does the fuel gauge

operate correctly?

Go to Step 6. Replace instrument

cluster. Refer to

2.1 INSTRUMENT

CLUSTER in this

Section.

6. •Disconnect battery.

•Disconnect LPG tank

harness from body

harness connector YB51

located in the left-hand

footwell.

•Using an ohmmeter, check

resistance across LPG

sender circuits 1030

(Yellow wire) and 155

(Black/Yellow wire) on LPG

tank harness.

•Is resistance within

specified range?

Between

37.5

ohms and

253.3

ohms

Go to Step 7. Replace faulty LPG

sender, refer to

Section 2 - VT

Sedan With

Production LPG or

Section 2A - VT

Sedan With

Accessory LPG &

VT Wagon With

Production LPG.

STEP ACTION VALUE YES NO

7. •Using an ohmmeter check

continuity between body

harness circuit 155

(Black/Yellow wire) at

connector YE112 and

circuit 1030 (Yellow wire)

at connector YE110 in the

engine compartment.

•Is there continuity?

Short circuit in

body harness

between YE112

and YB66.

Go to Step 8.

8. •Using an ohmmeter check

continuity between body

harness circuit 155

(Black/Yellow wire) and

circuit 1030 (Yellow wire)

at connector YB51.

•Is there continuity?

Short circuit in

body harness

between YB51

and YE112,

repair harness.

Go to Step 9.

9•Using an ohmmeter check

continuity between body

harness circuit 155

(Black/Yellow wire) and

circuit 1030 (Yellow wire)

at connector YR50 located

at the LPG tank..

•Is there continuity?

Short circuit in

body harness

between YR50

and YB51, repair

harness.

Replace faulty LPG

sender, refer to

Section 2 - VT

Sedan With

Production LPG or

Section 2A - VT

Sedan With

Accessory LPG &

VT Wagon With

Production LPG.

10. •Use TECH 2 to clear DTC.

•Has DTC cleared?

End of diagnostic

checking. Refer to

corresponding

diagnostic chart.

WHEN A LL DIAGNOSIS AND REPAIRS ARE COMPLETED, CLEAR ALL DTC AND

VERIFY CORRECT OPERATION

DTC 6 LPG GAUGE SENDER UNIT - INTERMITTENT

CIRCUIT DESCRIPTION:

The instrument assembly supplies a 5 volt reference voltage and an earth circuit to the LPG sender. The LPG

gauge sender unit provides a resistanc e value to the instrum ent assem bly based on its position relative to the LPG

level. The LPG sender resistance will vary betw een 37.5 ohms and 253.3 ohms from no LPG in the tank to full tank.

DTC 6 WILL SET IF:

•There is an interm ittent fault in the connection between the LPG s ender and the instrum ent cluster. The DT C is

set when the LPG sender res istance is greater than 260 ohms f or 2 seconds or if the LPG sender resist ance is

less than 37.5 ohms for 2 seconds . T he DTC is reset when the LPG sender is detected as being open circ uit or

short circuit or the sender is within its normal operating range for a period of 60 seconds.

TEST DESCRIPTION:

Number(s) below refer to step number(s) in the following diagnostic chart.

2-4. Use of TECH 2 to view data being sent from LPG sender. If voltage is not within correct operating

specifications then there is either an open circuit, short circuit or a faulty LPG sender. If open- or short-circuit

then checks will be made to locate the circuit interruption.

5. Use of TECH 2 to drive the gauge on the instrument assembly to verify that gauge is functioning correctly.

6-9. Test driving the car and manipulating the harnesses while viewing the serial data sent from the LPG sender will

indicate the presenc e of a c irc uit inter ruption as the voltage will fluc tuate in the event of an open c irc uit or s hort

circuit.

Additionally, viewing the DTC will indicate the presence of the intermittent fault if triggered by manipulating the

relevant harness.

DIAGNOSTIC AIDS:

By manipulating the harnesses at the various connector s it is pos sible to isolate the c ause of the circuit inter ruption.

By working through the chart in the specified order it is possible to work out which harness contains the fault. This

harness can then be removed and repaired.

The T ECH 2 diagnostic tool reads fuel sender pos ition as a voltage between 0 and 12 volts. The f uel sender signal

resistance should be between 37.5 to 253.3 ohms when the fuel sender is functioning correctly. The fuel sender

voltage should increase at a steady rate as the fuel level increases.

The multimeter allows continuity of the wiring harness to be checked. Harness voltage can also be confirmed at

connector locations.

Check for any damage to the harness which could cause an intermittent open or short to earth or backed out

terminals at the instrument assembly connectors, broken connector locks, improperly formed or damaged terminals.

STEP ACTION VALUE YES NO

• Was the Diagnostic Circuit

Check performed? Go to Step 2. Go to Diagnostic

Circuit Check in

this Section.

2. •Connect TECH 2 to DLC.

•Select 1998 \ VT

Commodore \ Diagnostics

\ Body \ Instrument \ Data

Display \ Instrument.

•Check the LPG sender

signal.

•Is LPG sender signal

voltage 0V?

Short circuit from

LPG sender to

instrument

cluster,

go to Step 5.

Go to Step 3.

3. •Is LPG sender signal

voltage 5V? Open circuit from

LPG sender to

instrument

cluster,

go to Step 5.

Go to Step 4.

4. •Is LPG sender signal

voltage between 0V and

5V?

Go to Step 5. Replace faulty LPG

sender, refer to

Section 2 - VT

Sedan With

Production LPG or

Section 2A - VT

Sedan With

Accessory LPG &

VT Wagon With

Production LPG.

5. •Using TECH 2, run Control

Tests,

refer to 5.14 F4:

MISCELLANEOUS TEST

in this Section.

•Does the fuel gauge

operate correctly?

Go to Step 6. Replace instrument

cluster. Refer to

2.1 INSTRUMENT

CLUSTER in this

Section.

6. •Clear DTC 6 by selecting

Diagnostics \ 1998 \ VT

Commodore \ Body \

Instrument \ Diagnostic

Trouble Codes \ Clear

DTC Information.

•Turn ignition off then on.

•Select Diagnostics \ 1998 \

VT Commodore \ Body \

Instrument \ Data Display \

Instrument and view LPG

sender signal data.

•Take vehicle for a test

drive and monitor the LPG

sender signal.

•Did the voltage of the LPG

sender signal vary during

the manipulations, or

•Did DTC 6 set again?

Repair faulty

wiring harness. Go to Step 7.

STEP ACTION VALUE YES NO

7. •Clear DTC 6 by selecting

Diagnostics \ 1998 \ VT

Commodore \ Body \

Instrument \ Diagnostic

Trouble Codes \ Clear

DTC Information.

•Turn ignition off then on.

•Select Diagnostics \ 1997 \

VT Commodore \ Body \

Instrument \ Data Display \

Instrument and view LPG

Sender Signal data.

•Have assistant manipulate

harness at connector

YE112 and YE110 in the

engine compartment to

induce an intermittent fault.

•Did the voltage of the LPG

sender signal vary during

the manipulations, or

•Did DTC 6 set again?

Repair faulty

wiring harness. Go to Step 8.

8. •Have assistant manipulate

harness at connector YB51

in the left-hand footwell to

induce an intermittent fault.

•Did the voltage of the LPG

sender signal vary during

the manipulations, or

•Did DTC 6 set again?

Repair faulty

wiring harness. Go to Step 9.

9. •Have assistant manipulate

harness at connector

YR50 located at the LPG

tank to induce an

intermittent fault.

•Did the voltage of the LPG

sender signal vary during

the manipulations, or

•Did DTC 6 set again?

Repair faulty

wiring harness. Replace faulty LPG

sender, refer to

Section 2 - VT

Sedan With

Production LPG or

Section 2A - VT

Sedan With

Accessory LPG &

VT Wagon With

Production LPG.

10. •Use TECH 2 to clear DTC.

•Has DTC cleared?

End of diagnostic

checking. Refer to

corresponding

diagnostic chart.

WHEN A LL DIAGNOSIS AND REPAIRS ARE COMPLETED, CLEAR ALL DTC AND

VERIFY CORRECT OPERATION

DTC - 8 NO SERIAL DATA FROM ABS

CIRCUIT DESCRIPTION:

The ABS/ETC module sends serial data along the serial data line, circuit 1220. This is read by the instrument

assembly to indicate the status of the trac tion c ontrol. If tr ac tion contr ol has been dis abled by the ABS/ET C module,

the Traction Control Off lamp will illuminate.

NOTE:

If a vehicle is not fitted with ABS or ABS/ETC, DTC 8 will always be set.

DTC 8 WILL SET IF:

•There is no ABS data message on the SDI bus for more than 10 seconds. In practice the trouble code is set

somewhere between 10 and 20 seconds after the last ABS data message is received by the instrument. The

DTC is reset within 10 seconds of the arrival of an ABS data message on the SDI bus.

TEST DESCRIPTION:

Number(s) below refer to step number(s) in the following diagnostic chart.

1. Ensures that the Diagnostic Circuit Check has been performed.

2. Determines if the TECH 2 is powered up and operating correctly.

3. Checks for the presence of serial data from the ABS module. If this data can be read this indicates that the

problem is intermittent.

4. Checks the continuity of the serial data line (circuit 1220) between the ABS module and the instrument cluster.

5. If the DTC can be cleared, the fault is intermittent. If the DTC cannot be cleared, the instrument cluster is

faulty.

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 earth or backed out

terminals at the instrument assembly connectors, broken connector locks, improperly formed or damaged terminals.

The multimeter allows continuity of the wiring harness circuit 1220 to be checked.

If the f ault cannot be found in the harness then the f ault may lie in the ABS module or the BCM, both of which can

be diagnosed in their relevant Sections.

STEP ACTION VALUE YES NO

• Was the Diagnostic Circuit

Check performed? Go to Step 2. Go to Diagnostic

Circuit Check in

this Section.

2. •Connect TECH 2 to DLC.

•Turn ignition on.

•Push power button on

TECH 2.

•Does TECH 2 power up ?

(Screen should illuminate

and display TECH 2).

Go to Step 3. Go to TECH 2

diagnostics, refer to

Section 0C TECH

3. •At the TECH 2 title screen

press the Enter key.

•Select Diagnostics \ 1998 \

VT Commodore \ Chassis \

ABS/ETC.

•Turn on the ignition and

press the Confirm soft key.

•Does TECH 2 display the

Electronic System:

ABS/ETC information (ie.

Part Number \ System ID \

System)?

Go to Step 4. Go to Section 5B

ABS & ABS/ETC.

4. •Using an ohmmeter, check

for continuity of circuit 1220

(Green/White wire)

between ABS/ETC module

connector YE98 and

instrument cluster

connector YB66.

•Is there continuity?

Go to Step 5. Find source of

open circuit and

repair faulty main

wiring harness.

5. •Use TECH 2 to clear DTC.

•Has DTC cleared?

DTC 8 is

intermittent.

Check circuit 1220

(Green/White

wire) between

ABS/ETC module

and instrument

cluster for an

intermittent fault.

Check the

instrument cluster

and ABS/ETC

module connectors

for terminal

retention. If OK,

replace instrument

cluster, refer to 2.1

INSTRUMENT

CLUSTER in this

Section.

WHEN A LL DIAGNOSIS AND REPAIRS ARE COMPLETED, CLEAR ALL DTC AND

VERIFY CORRECT OPERATION

DTC - 9 NO SERIAL DATA FROM BCM

CIRCUIT DESCRIPTION:

The BCM s ends serial data along the ser ial data line, circuit 1220. T his is read by the instrum ent cluster to indic ate

the status of the various components on the serial data line.

DTC 9 WILL SET IF:

• •There is no BCM data message on the SDI bus for m ore than 10 s econds. In practice the trouble code is

set somewhere between 10 and 20 seconds after the last BCM data message is received by the instrument.

The trouble code is reset within 10 seconds of the arrival of a BCM data message on the SDI bus.

TEST DESCRIPTION:

Number(s) below refer to step number(s) in the following diagnostic chart.

1. Ensures that the Diagnostic Circuit Check has been performed.

2. Determines if the TECH 2 is powered up and operating correctly.

3. Check s for the presenc e of s erial data fr om the BCM. If this data c an be read this indic ates that the problem is

intermittent.

4. Checks the continuity of the serial data line (circuit 1220) between the BCM and the instrument cluster.

5. If the DTC can be cleared, the fault is intermittent. If the DTC cannot be cleared, the instrument cluster is

faulty.

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 dam age to the harness which c ould cause an interm ittent open circuit or backed out ter minals at the

instrument assembly connectors, broken connector locks, improperly formed or damaged terminals.

The multimeter allows continuity of the wiring harness circuit 1220 to be checked.

If the f ault cannot be f ound in the har nes s then the fault m ay lie in the BCM. Ref er to Section 12J-1 L OW SERIES

BCM or SECTION 12J-2 HIGH SERIES BCM for diagnosis procedures.

STEP ACTION VALUE YES NO

• Was the Diagnostic Circuit

Check performed? Go to Step 2. Go to Diagnostic

Circuit Check in

this Section.

2. •Connect TECH 2 to DLC.

•Turn ignition on.

•Push power button on

TECH 2.

•Does TECH 2 power up ?

(Screen should illuminate

and display TECH 2)

Go to Step 3. Go to TECH 2

diagnosis, refer to

Section 0C -

TECH 2.

3. •At the TECH 2 title screen

press the Enter key.

•Select Diagnostics \ 1998 \

VT Commodore \ Body \

Body Control Module.

•Turn on the ignition and

press the Confirm soft key.

•Does TECH 2 display the

Electronic System: BCM

information (ie. BCM Level

/ BCM Type)?

Go to Step 4. Go to BCM Serial

Data

Communication

Diagnosis in

Section 12J-1 LOW

SERIES BCM

Section 12J-2

HIGH SERIES

BCM.

4. •Using an ohmmeter, check

for continuity of circuit 1220

(Green/White wire)

between BCM connector

YB164 and instrument

cluster connector YB66

(Low Series BCM) or

YB175 and YB66 (High

Series BCM).

•Is there continuity?

Go to Step 5. Find source of

open circuit and

repair faulty main

wiring harness.

5. •Use TECH 2 to clear DTC.

•Has DTC cleared?

DTC 9 is

intermittent.

Check circuit 1220

(Green/White

wire) between

BCM module and

instrument cluster

for an intermittent

fault.

Check the

instrument cluster

and BCM

connectors for

terminal retention.

If OK, replace

instrument cluster,

refer to 2.1

INSTRUMENT

CLUSTER in this

Section.

WHEN A LL DIAGNOSIS AND REPAIRS ARE COMPLETED, CLEAR ALL DTC AND

VERIFY CORRECT OPERATION

DTC - 10 NO SERIAL DATA FROM ECC

CIRCUIT DESCRIPTION:

The ECC module sends serial data to the instrument assembly along the serial data line, circuit 1220.

DTC 10 WILL SET IF:

•There is no ECC data message on the SDI bus for more than 10 seconds. In practice the trouble code is set

somewhere between 10 and 20 seconds after the last ECC data message is received by the instrument. The

DTC is reset within 10 seconds of the arrival of a ECC data message on the SDI bus.

TEST DESCRIPTION:

Number(s) below refer to step number(s) in the following diagnostic chart.

1. Ensures that the Diagnostic Circuit Check has been performed.

2. Determines if the TECH 2 is powered up and operating correctly.

3. Checks for the presence of serial data from the ECC module. If this data can be read this indicates that the

problem is intermittent.

4. Checks the continuity of the serial data line (circuit 1220) between the ECC module and the instrument cluster.

5. If the DTC can be cleared, the fault is intermittent. If the DTC cannot be cleared, the instrument cluster is

faulty.

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 earth or backed out

terminals at the instrument assembly connectors, broken connector locks, improperly formed or damaged terminals.

The multimeter allows continuity of the wiring harness circuit 1220 to be checked.

If the fault cannot be found in the harness then the fault m ay lie in the ECC m odule or the BCM, both of which can

be diagnosed in their relevant Sections.

STEP ACTION VALUE YES NO

• Was the Diagnostic Circuit

Check performed? Go to Step 2. Go to Diagnostic

Circuit Check in

this Section.

2. •Connect TECH 2 to DLC.

•Turn ignition on.

•Push power button on

TECH 2.

•Does TECH 2 power up ?

(Screen should illuminate

and display TECH 2)

Go to Step 3. Go to TECH 2

diagnosis, refer to

Section 0C -

TECH 2.

3. •At the TECH 2 title screen

press the Enter key.

•Select Diagnostics \ 1998 \

VT Commodore \ Body \

Electronic Climate Control.

•Turn on the ignition and

press the Confirm soft key.

•Does TECH 2 display the

Electronic System: ECC

information?

Go to Step 4. Refer to

Section 2F AIR

CONDITIONING -

ECC

DIAGNOSTICS..

4. •Using an ohmmeter, check

for continuity of circuit

1220 (Green/White wire)

between ECC module

connector YB87 and

instrument cluster

connector YB66.

•Is there continuity?

Go to Step 5. Repair faulty main

wiring harness.

5. •Use TECH 2 to clear DTC.

•Has DTC cleared?

DTC 10 is

intermittent.

Check circuit

1220

(Green/White

wire) between

ECC module and

instrument cluster

for an intermittent

fault.

Check the

instrument cluster

and ECC module

connectors for

terminal retention.

If OK, replace

instrument cluster,

refer to 2.1

INSTRUMENT

CLUSTER in this

Section.

WHEN A LL DIAGNOSIS AND REPAIRS ARE COMPLETED, CLEAR ALL DTC AND

VERIFY CORRECT OPERATION

DTC - 11 NO SERIAL DATA FROM PCM

CIRCUIT DESCRIPTION:

The PCM sends serial data to the BCM along the m ain serial data line, circuit 1221. Serial data is then sent to the

instrum ent cluster along the auxiliar y s erial data line, circuit 1220. T his is read by the instrum ent cluster to indicate

the status of the check power train lamp and the oil pressure warning lamp.

DTC 11 WILL SET IF:

•There is no PCM data message on the SDI bus for more than 10 seconds. In practice the trouble code is set

somewhere between 10 and 20 seconds after the last PCM data message is received by the instrument. The

trouble code is reset within 10 seconds of the arrival of a ECC data message on the SDI bus.

TEST DESCRIPTION:

Number(s) below refer to step number(s) in the following diagnostic chart.

1. Ensures that the Diagnostic Circuit Check has been performed.

2. Determines if the TECH 2 is powered up and operating correctly.

3. Check s for the presenc e of s erial data fr om the PCM. If this data can be read this indicates that the pr oblem is

intermittent.

4. Checks the continuity of the serial data line (circuit 1221) between the PCM and the BCM.

5. Checks the continuity of the serial data line (circuit 1220) between the BCM and the instrument cluster.

6. If the DTC can be cleared, the fault is intermittent. If the DTC cannot be cleared, the instrument cluster is

faulty.

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 earth or backed out

terminals at the instrument assembly connectors, broken connector locks, improperly formed or damaged terminals.

The multimeter allows continuity of the wiring harness circuits 1221 and 1220 to be checked.

If the fault cannot be found in the harness then the fault may lie in the PCM or the BCM, both of which can be

diagnosed in their relevant Sections.

STEP ACTION VALUE YES NO

• Was the Diagnostic

Circuit Check performed? Go to Step 2. Go to Diagnostic

Circuit Check in

this Section.

2. •Connect TECH 2 to DLC.

•Turn ignition on.

•Push power button on

TECH 2.

•Does TECH 2 power up ?

(Screen should illuminate

and display TECH 2)

Go to Step 3. Go to TECH 2

diagnosis, refer to

Section 0C -

TECH 2.

3. •At the TECH 2 title screen

press the Enter key.

•Select Diagnostics \ 1998

\ VT Commodore \ Engine

\ Select appropriate

engine.

•Turn on the ignition and

press the Confirm soft

key.

•Does TECH 2 display the

Engine System:

Identification information

(ie. PROM Identification)?

Go to Step 4. Refer to

Section 6C1

POWERTRAIN

MANAGEMENT -

V6 ENGINE

Section 6C2

POWERTRAIN

MANAGEMENT -

V8 ENGINE.

4. •Using an ohmmeter,

check for continuity of

circuit 1221 (Red/Black

wire) between BCM

connector YB164 (Low

Series BCM), or YB175

(High Series BCM) and

PCM connector YB66..

•Is there continuity?

Harness from

PCM to

BCM OK.

Go to Step 5.

Repair faulty

wiring harness

from PCM to

BCM.

5. •Using an ohmmeter,

check for continuity of

circuit 1220 (Green/White

wire) between BCM

connector YB164 (Low

Series BCM) or YB175

(High Series BCM) and

instrument cluster

connector YB66.

•Is there continuity?

Harness from

BCM to

instrument

cluster OK.

Go to Step 6.

Repair faulty

wiring harness

from BCM to

instrument.

6. •Use TECH 2 to clear

DTC.

•Has DTC cleared?

DTC 11 is

intermittent.

Check circuit

1221 (Red/Black

wire) between

BCM and PCM,

and circuit 1220

(Green/White

wire) between

BCM and

instrument

cluster for an

intermittent fault.

Check the

instrument cluster,

PCM and BCM

connectors for

terminal retention.

If OK, replace

instrument cluster,

refer to 2.1

INSTRUMENT

CLUSTER in this

Section.

WHEN A LL DIAGNOSIS AND REPAIRS ARE COMPLETED, CLEAR ALL DTC AND

VERIFY CORRECT OPERATION

DTC - 12 NO SERIAL DATA FROM SDM

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 to indicate the status of the SDM.

NOTE:

There ar e three versions of SDM used by the SRS. Version 6.2 and vers ion 8.0 ar e used on vehicles with either 2-

loop (left-hand drive only), 3-loop or 4-loop system s, while version 8.1 is used on vehicles with a 6-loop system. For

more information, refer to Section 12M SUPPLEMENTAL RESTRAINT SYSTEM (Version 6.2) or

Section 12M SUPPLEMENTAL RESTRAINT SYSTEM (Version 8.0/8.1).

DTC 12 WILL SET IF:

•There is no serial data being received from the SDM.

TEST DESCRIPTION:

Number(s) below refer to step number(s) in the following diagnostic chart.

1. Ensures that the Diagnostic Circuit Check has been performed.

2. Determines if the TECH 2 is powered up and operating correctly.

3. Checks for the presence of serial data from the SDM. If this data can be read this indicates that the problem is

intermittent.

4. Checks the continuity of the serial data line (circuit 1220) between the SDM and the BCM.

5. Checks the continuity of the serial data line (circuit 1220) between the BCM and the instrument cluster.

6. If the DTC can be cleared, the fault is intermittent. If the DTC cannot be cleared, the instrument cluster is

faulty.

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 earth or backed out

terminals at the instrument assembly connectors, broken connector locks, improperly formed or damaged terminals.

The multimeter allows continuity of the wiring harness circuit 1220 to be checked.

If the fault cannot be found in the harness then the fault may lie in the SDM or the BCM, both of which can be

diagnosed in their relevant Sections.

STEP ACTION VALUE YES NO

• Was the Diagnostic

Circuit Check performed? Go to Step 2. Go to Diagnostic

Circuit Check in

this Section.

2. •Connect TECH 2 to DLC.

•Turn ignition on.

•Push power button on

TECH 2.

•Does TECH 2 power up ?

(Screen should illuminate

and display TECH 2)

Go to Step 3. Go to TECH 2

diagnosis, refer to

Section 0C -

TECH 2.

3. •At the TECH 2 title screen

press the Enter key.

•Select Diagnostics \ 1998

\ VT Commodore \ Body \

SRS.

•Turn on the ignition and

press the Confirm soft

key.

•Does TECH 2 display the

Electronic System:

Identification information

(ie. Part Number /

Production Date)?

Go to Step 4. Refer to

Section 12M

SUPPLEMENTAL

RESTRAINT

SYSTEM

(Version 6.2)

Section 12M

SUPPLEMENTAL

RESTRAINT

SYSTEM

(Version 8.0/8.1).

STEP ACTION VALUE YES NO

4. •Disable the SRS, refer to

Section 12M

SUPPLEMENTAL

RESTRAINT SYSTEM

(Version 6.2) or

Section 12M

SUPPLEMENTAL

RESTRAINT SYSTEM

(Version 8.0/8.1).

•Using an ohmmeter and

Tool KM-609-20, check

harness for continuity of

circuit 1220 (Green/White

wire) between SDM

connector YB189/YB190

and BCM connector

YB164 (Low Series BCM),

or YB189/YB190 and YB

175 (High Series BCM)

•Is there continuity?

Harness from

SDM to BCM

OK.

Go to Step 6.

Repair faulty

wiring harness

from

SDM to BCM.

5. •Using an ohmmeter,

check for continuity of

circuit 1220 (Green/White

wire) between BCM

connector YB164 (Low

Series BCM), or YB175

(High Series BCM) and

instrument cluster

connector YB66.

•Is there continuity?

Harness from

BCM to

instrument

cluster OK.

Go to Step 6.

Faulty wiring

harness from BCM

to instrument

cluster.

8. •Enable the SRS, refer to

Section 12M

SUPPLEMENTAL

RESTRAINT SYSTEM

(Version 6.2) or

Section 12M

SUPPLEMENTAL

RESTRAINT SYSTEM

(Version 8.0/8.1).

•Use TECH 2 to clear

DTC.

•Has DTC cleared?

DTC 12 is

intermittent.

Check circuit

1220 (Green/

White wire)

between SDM

and BCM, and

between BCM

and instrument

cluster for an

intermittent fault.

Check the

instrument cluster,

SDM and BCM

connectors for

terminal retention.

If OK, replace

instrument cluster,

refer to 2.1

INSTRUMENT

CLUSTER in this

Section.

WHEN A LL DIAGNOSIS AND REPAIRS ARE COMPLETED, CLEAR ALL DTC AND

VERIFY CORRECT OPERATION

DTC - 13 NO INSTRUMENT POLL FROM BCM

CIRCUIT DESCRIPTION:

The BCM uses the serial data line (circuit 1220) to poll the instrument cluster for information.

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

som ewhere between 10 and 20 sec onds after the las t instrum ent poll is r eceived by the instr ument. The DT C is

reset within 10 seconds of the arrival of an instrument poll from the BCM.

TEST DESCRIPTION:

Number(s) below refer to step number(s) in the following diagnostic chart.

1. Ensures the Diagnostic Circuit Check has been performed.

2. Determines if the BCM can communicate with the TECH 2.

3. Checks if fault is common with other control modules connected to the serial data circuit.

4. Checks internal switch in BCM for open circuit.

5. Checks circuit 1220 and determines if fault is in wiring or a control module.

6. Checks circuit 1220 for open circuit.

7. Checks integrity of earth circuits for the instruments.

8. If the DTC can be cleared, the fault is intermittent. If the DTC cannot be cleared, the instrument cluster is

faulty.

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 earth or backed out

terminals at the instrument cluster connectors, broken connector locks, improperly formed or damaged terminals.

The multimeter allows continuity of the wiring harness circuit 1220 to be checked.

If the f ault cannot be found in the harness then the f ault may lie in the BCM, which c an be diagnosed in the r elevant

Section.

STEP ACTION VALUE YES NO

• Was the Diagnostic

Circuit Check

performed?

Go to Step 2. Go to Diagnostic

Circuit Check in

this Section.

2•Connect TECH 2 to the

DLC.

•Select Body / DTC

Check / F0: DTC

Check.

•Can TECH 2

communicate with the

BCM?

NOTE:

If ‘No Data’ is displayed

next to the BCM, then

there is no communication

between TECH 2 and the

BCM. If 'No DT C' or 'DTCs

Set' is displayed then there

is communication between

the TECH 2 and the BCM.

Go to Step 3. Go to BCM

Serial Data

Communication

diagnostics in

Section 12J-1

LOW SERIES

BCM, or

Section 12J-2

HIGH SERIES

BCM.

3•In Step 2, was TECH 2

able to communicate

with all the other

control modules,

except the

Instruments, fitted to

the vehicle (ABS or

ABS/ETC, ECC,

SRS)?

NOTE:

If ‘No Data’ is displayed

next to a control module,

then there is no

communication between

TECH 2 and that control

module.

Go to Step 6. Go to Step 4.

4•Using an ohmmeter,

check continuity of

circuits 1220

(Green/White wire) and

1221 (Red/Black wire)

between BCM

connector YB164,

terminals 2 and 3 (Low

Series BCM) or YB175,

terminals 2 and 9 (High

Series BCM).

•Does continuity exist?

Go to Step 5. Replace BCM,

refer to

Section 12J-1

LOW SERIES

BCM, or

Section 12J-2

HIGH SERIES

BCM.

STEP ACTION VALUE YES NO

5•Check circuit 1220 for

open, short to earth or

short to voltage

between BCM and

individual control

modules.

•Is circuit 1220 okay?

NOTE:

Disconnect each control

module in circuit 1220 one

at a time to isolate the fault

in the circuit or to identify

the control module causing

the fault.

Refer to the

appropriate

diagnostic

procedure for the

faulty control

module.

Repair circuit 1220

as necessary.

6•Using an ohmmeter,

check for continuity

between BCM

connector YB164,

terminal 3 (Low Series

BCM) or YB175,

terminal 9 (High Series

BCM) and instruments

connector YB66,

terminal 12

(Green/White wire).

•Does continuity exist?

Go to Step 7. Repair open in

circuit 1220.

7•Check the integrity of

the Instruments earth

circuit by performing a

voltage drop on circuit

155 between

instrument connector

YB66, terminal 6 and

earth point E3.

•With ignition on, is

voltage less than the

specified value?

0.15 volt Go to Step 8. Repair earth circuit

as necessary.

8•Use TECH 2 to clear

DTC.

•Has DTC cleared?

DTC 13 is

intermittent. Check

circuit 1220

(Green/White

wire) between

BCM and

instrument cluster

for an intermittent

fault.

Check the

instrument cluster

and BCM

connectors for

terminal retention.

If OK replace

instrument cluster,

refer to 2.1

INSTRUMENT

CLUSTER in this

Section.

WHEN A LL DIAGNOSIS AND REPAIRS ARE COMPLETED, CLEAR ALL DTC AND

VERIFY CORRECT OPERATION

DTC - 14 NO SERIAL COMMUNICATION

CIRCUIT DESCRIPTION:

When investigating any complaint of an Instrument problem or malfunction, always begin diagnosis with the

diagnostic cir cuit check . This check is a prelim inary procedure that check s that the Instr uments are com m unicating

on the serial data line as well as helping to identify a problem or malfunction and directing the reader to the

appropriate diagnostic chart in this section.

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.

There are several other control modules that are connected to the serial data line (PCM, BCM, ABS or ABS/ETC,

instruments and SDM). 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.

TEST DESCRIPTION:

Number(s) below refer to step number(s) in the following diagnostic chart.

1. Ensures the Diagnostic Circuit Check has been performed.

2. Determines if the BCM can communicate with the TECH 2.

3. Checks if fault is common with other control modules connected to the serial data circuit.

4. Checks internal switch in BCM for open circuit.

5. Checks circuit 1220 and determines if fault is in wiring or a control module.

6. Checks circuit 1220 for open circuit.

7. Checks integrity of earth circuits for the instruments.

8. If the DTC can be cleared, the fault is intermittent. If the DTC cannot be cleared, the instrument cluster is

faulty.

DIAGNOSTIC AIDS:

A fault with the serial data circuit could be caused by one or more of the several control modules connected to this

serial data circuit. Isolate the fault by disconnecting each control module, one at a time, until serial data

communication is restored.

STEP ACTION VALUE YES NO

• Was the Diagnostic

Circuit Check

performed?

Go to Step 2. Go to Diagnostic

Circuit Check in

this Section.

2•Connect TECH 2 to the

DLC.

•Select Body / DTC

Check / F0: DTC

Check.

•Can TECH 2

communicate with the

BCM?

NOTE:

If ‘No Data’ is displayed

next to the BCM, then

there is no communication

between TECH 2 and the

BCM. If 'No DTC' or

'DTCs Set' is displayed

then there is

communication between

the TECH 2 and the BCM.

Go to Step 3. Go to BCM

Serial Data

Communication

diagnostics in

Section 12J-1

LOW SERIES

BCM, or

Section 12J-2

HIGH SERIES

BCM.

3•In Step 2, was TECH 2

able to communicate

with all the other

control modules,

except the

Instruments, fitted to

the vehicle (ABS or

ABS/ETC, ECC,

SRS)?

NOTE:

If ‘No Data’ is displayed

next to a control module,

then there is no

communication between

TECH 2 and that control

module.

Go to Step 6. Go to Step 4.

STEP ACTION VALUE YES NO

4•Using an ohmmeter,

check continuity of

circuits 1220

(Green/White wire) and

1221 (Red/Black wire)

between BCM

connector YB164,

terminals 2 and 3 (Low

Series BCM) or YB175,

terminals 2 and 9 (High

Series BCM).

•Does continuity exist?

Go to Step 5. Replace BCM,

refer to

Section 12J-1

LOW SERIES

BCM, or

Section 12J-2

HIGH SERIES

BCM.

5•Check circuit 1220 for

open, short to earth or

short to voltage

between BCM and

individual control

modules.

•Is circuit 1220 okay?

NOTE:

Disconnect each control

module in circuit 1220 one

at a time to isolate the

fault in the circuit or to

identify the control module

causing the fault.

Refer to the

appropriate

diagnostic

procedure for the

faulty control

module.

Repair circuit 1220

as necessary.

6•Using an ohmmeter,

check for continuity

between BCM

connector YB164,

terminal 3 (Low Series

BCM) or YB175,

terminal 9 (High Series

BCM) and instruments

connector YB66,

terminal 12

(Green/White wire).

•Does continuity exist?

Go to Step 7. Repair open in

circuit 1220.

7•Check the integrity of

the Instruments earth

circuit by performing a

voltage drop on circuit

155 between

instrument connector

YB66, terminal 6 and

earth point E3.

•With ignition on, is

voltage less than the

specified value?

0.15 volt Go to Step 8. Repair earth circuit

as necessary.

8•Use TECH 2 to clear

DTC.

•Has DTC cleared?

DTC 14 is

intermittent. Check

circuit 1220

(Green/White

wire) between

BCM and

instrument cluster

for an intermittent

fault.

Check the

instrument cluster

and BCM

connectors for

terminal retention.

If OK replace

instrument cluster,

refer to 2.1

INSTRUMENT

CLUSTER in this

Section.

WHEN A LL DIAGNOSIS AND REPAIRS ARE COMPLETED, CLEAR ALL DTC AND

VERIFY CORRECT OPERATION

DTC - 16 ABS OR ABS/ETC FAULT LOGGED

CIRCUIT DESCRIPTION:

The ABS or ABS/ETC module informs the instrument via the serial data bus whenever an ABS or ABS/ETC DTC

has been set. Refer to Section 5B ABS & ABS/ETC for fault diagnosis procedures.

DTC - 17 BCM FAULT LOGGED

CIRCUIT DESCRIPTION:

The BCM informs the instrument via the serial data bus whenever a BCM DTC has been set. Refer to

Section 12J-1 LOW SERIES BCM, or Section 12J-2 HIGH SERIES BCM for fault diagnosis procedures.

DTC - 18 ECC FAULT LOGGED

CIRCUIT DESCRIPTION:

The ECC module informs the instrument via the serial data bus whenever an ECC DTC has been set. Refer to

Section 2F AIR CONDITIONING - ECC for fault diagnosis procedures.

DTC - 19 PCM FAULT LOGGED

CIRCUIT DESCRIPTION:

The PCM informs the instrument via the serial data bus whenever a PCM DTC has been set. Refer to

Section 6C1 POWERTRAIN MANAGEM ENT - V6 ENGINE, or Section 6C2 POWERTRAIN M ANAGEMENT - V8

ENGINE for fault diagnosis procedures.

DTC - 20 SDM FAULT LOGGED

CIRCUIT DESCRIPTION:

The SDM informs the instrument via the serial data bus whenever an SDM DTC has been set. Refer to

Section 12M SUPPLEMENTAL RESTRAINT SYSTEM (Version 6.2) for fault diagnosis procedures on vehicles

fitted with a version 6.2 SDM, or to Section 12M SUPPLEMENTAL RESTRAINT SYSTEM (Version 8.0/8.1) for

fault diagnosis procedures on vehicles fitted with a version 8.0 or 8.1 SDM.

DTC - 24 EE CHECKSUM = FAILURE

CIRCUIT DESCRIPTION:

The EEPROM (Electrically Erasable Programmable Read Only Memory) is part of the printed circuit board housed

within the instrument assembly. It stores variables required in the operation of the instrument cluster and in the

interpretation of the incom ing data and can be progr am m ed for dif f erent instrum ent levels . If a DT C 24 is detec ted,

an icon ! appears in the left-hand instrument window on a triple window display, or SERV ERROR on a single

window display. If a DTC 24 was set as a result 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 will be reset when the EEPROM checksum is tested as being correct.

DIAGNOSTIC AIDS:

If the programmed instrum ent c luster values are corr upted, reprogr am m ing can be carr ied out via TECH 2 to rec tify

the fault, refer to Section 5.15 F5: PROGRAM in this Section.

STEP ACTION VALUE YES NO

• Was the Diagnostic Circuit

Check performed? Go to Step 2. Go to Diagnostic

Circuit Check in

this Section.

2. •Go to Section 5.15

F5: PROGRAM in this

Section.

•Is programming completed

successfully?

Go to Step 3. Replace the

instrument cluster,

refer 2.1

INSTRUMENT

CLUSTER in this

Section.

3. •Use TECH 2 to clear DTC.

•Has DTC cleared?

Instrument

cluster OK.

End of

diagnostic

testing.

EEPROM failed.

Replace the

instrument cluster,

refer 2.1

INSTRUMENT

CLUSTER in this

Section.

WHEN A LL DIAGNOSIS AND REPAIRS ARE COMPLETED, CLEAR ALL DTC AND

VERIFY CORRECT OPERATION

DTC - 25 ROM CHECKSUM = FAILURE

CIRCUIT DESCRIPTION:

The ROM (Read Only Memory) is part of the printed circuit board housed within the instrument cluster. It stores

variables required to initialise the instrument cluster. If a DTC 25 is detected, an icon ! appears in the left-hand

instrument window on a triple window display, or SERV ERROR on a single window display. If a DTC 25 has been

set, then the instrument assembly will need to be replaced.

DTC 25 WILL SET IF:

• The ROM checksum is incorrect. The testing of the ROM checksum occurs when the instrument cluster is reset

(due to battery removal or low power cranking). The DTC will be reset when the ROM checksum is tested as

being correct.

DIAGNOSTIC AIDS:

If the ROM checksum is incorrect, the instrument cluster may need to be replaced and reprogrammed.

STEP ACTION VALUE YES NO

• Was a Diagnostic Circuit

Check performed? Go to Step 2. Go to Diagnostic

Circuit Check in

this Section.

2•Use TECH 2 to clear DTC.

•Has DTC cleared?

Instrument

cluster OK.

End of diagnostic

testing..

ROM checksum

error.

Replace instrument

cluster, refer to 2.1

INSTRUMENT

CLUSTER in this

Section.

WHEN A LL DIAGNOSIS AND REPAIRS ARE COMPLETED, CLEAR ALL DTC AND

VERIFY CORRECT OPERATION

DTC - 26 INTERNAL FAULT

CIRCUIT DESCRIPTION:

The instrument cluster is equipped with self-diagnostic capability that can detect an internal fault within the

instrument cluster. If an internal fault is detected, an icon ! appears in the left-hand instrument window on a triple

window display, or SERV ERROR on a single window display. If a DTC 26 has been set, then the instrument cluster

will need to be replaced.

DTC 26 WILL SET IF:

• The instrument has detected an internal fault.

STEP ACTION VALUE YES NO

• Has diagnostic circuit

test been carried out ? Go to Step 2. Go to Diagnostic

Circuit Check in

this Section.

2•Use TECH 2 to clear

DTC.

•Has DTC cleared?

Instrument

cluster OK.

End of diagnostic

testing.

Internal fault.

Replace instrument

cluster, refer to 2.1

INSTRUMENT

CLUSTER in this

Section.

WHEN A LL DIAGNOSIS AND REPAIRS ARE COMPLETED, CLEAR ALL DTC AND

VERIFY CORRECT OPERATION

LOW SERIES TRIP COMPUTER DIAGNOSTIC FUNCTIONS - SINGLE WINDOW DISPLAY

DESCRIPTION

On low series BCM equipped vehicles the combined instrument assembly is fitted with a single window trip

computer. The purpose of this diagnostic chart is to determine if there is a fault with any of the display functions.

Because there are no serviceable items within the combined instrument assembly, if a fault is detected the

combined instrument assembly is to be replaced, refer to 2.1 INSTRUMENT CLUSTER in this Section.

To enter DIAGNOSTIC MODE :

Press the MODE button down together with ⇑

⇑⇑

⇑ button while turning ignition from off to on.

Action Window Displays

Initial display (Ignition voltage)

V 14.5

Press MODE button (Fuel level)

00.00 L

Press MODE button (Instantaneous fuel)

00.00 l/h

Press MODE button (Temp. from PCM)

T 34ºC

Press MODE button (Speedometer reading)

SPD 000 km/h

Press MODE button (Button voltage)

vb 0.0

Press MODE button (Diagnostic Mode Display – refer to Note)

t 00 – –

Press MODE button (All segments on)

To exit DIAGNOSTIC MODE :

Press the ⇑

⇑⇑

⇑ button together with ⇓

⇓⇓

⇓ button

Press ⇑

⇑⇑

⇑ & ⇓

⇓⇓

⇓ button to exit (Odometer reading)

000000.0

NOTE:

The diagnostic mode display uses the format t NN XY, where:

t = diagnostic trouble code (DTC)

NN = the actual DTC number,

X = the history status (H for active and – for inactive), and

Y = the current DTC status (C for active and – for inactive).

IMPORTANT:

An open circuit fuel gauge sender unit is shown the instrument cluster diagnostic mode display as ‘t 00 – C’

whereas the TECH 2 shows the same fault as DTC 3.

HIGH SERIES TRIP COMPUTER DIAGNOSTIC FUNCTIONS - THREE WINDOW DISPLAY

DESCRIPTION

On high series BCM equipped vehicles the combined instrument assembly is fitted with a triple window trip

computer. The purpose of this diagnostic chart is to determine if there is a fault with any of the display functions.

Because there are no serviceable items within the combined instrument assembly, if a fault is detected the

combined instrument assembly is to be replaced, refer to 2.1 INSTRUMENT CLUSTER in this Section.

To enter DIAGNOSTIC MODE :

Press the MODE button down together with ⇑

⇑⇑

⇑ button while turning ignition from off to on.

Action Window 1 Displays Window 2 Displays Window 3 Displays

Initial display (Odometer reading)

00000.0

First display (Speed)

SPEED 000 km/h

(Ignition voltage)

V 14.5 (Remaining fuel)

REMAINING

FUEL 00.0 L

Press MODE button (Button Voltage)

B V 5.0 (Temp from PCM)

TEMP 34ºC (Instantaneous fuel)

INST

FUEL 00.00 L/H

Press MODE button (Diagnostic Mode

Display –

refer to Note)

t 00 – –

Press MODE button All segments on All segments on All segments on

To exit DIAGNOSTIC MODE :

Press the ⇑

⇑⇑

⇑ button together with ⇓

⇓⇓

⇓ button

Press ⇑

⇑⇑

⇑ & ⇓

⇓⇓

⇓ button to

exit (Odometer reading)

00000.0

NOTE:

The diagnostic mode display uses the format t NN XY, where:

t = diagnostic trouble code (DTC)

NN = the actual DTC number,

X = the history status (H for active and – for inactive), and

Y = the current DTC status (C for active and – for inactive).

IMPORTANT:

An open circuit fuel gauge sender unit is shown the instrument cluster diagnostic mode display as ‘t 00 – C’

whereas the TECH 2 shows the same fault as DTC 3.

5.9 USING TECH 2 TO DIAGNOSE THE INSTRUMENT ASSEMBLY

A prerequisite to this diagnostic sect ion is that the

user is f am iliar with the proper us e of T ECH 2. T he

following illustrate 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

Section 0C TECH 2 or the TECH 2 User’s Guide.

SYSTEM SELECTION MENU

With TECH 2 connected to the DLC and the F0:

Diagnostics selected from the Main Menu, the

correct V.I.N. number must be entered for access

to the System Selection Menu.

Select F3: Body.

This m ode contains all f unctions to test, diagnos e,

monitor and program the vehicles body systems

including the Instruments as well as providing the

opportunity to check all DTC that may be set in

the vehicle.

Figure 12C-95

VEHICLE IDENTIFICATION MENU

Once F3: Body has been selected from the

System Selection Menu, Instrument can be

selected.

Select Instrument.

NOTE:

If information regarding DTC set for the vehicle is

required, select DTC Check and press enter to

continue. To r eturn to the Instrum ent mode option

from the DTC Check mode option screen display,

simply press the Exit key on TECH 2.

Once Instrument has been selected, the following

two System Identification screens will appear

which require action. Figure 12C-96

SYSTEM IDENTIFICATION

Turn the ignition ON (as requested) and press

Confirm soft key to continue.

Figure 12C-97

The part number of the instrument cluster will be

displayed. Press the More soft key to display more

detailed information about the part.

Figure 12C-98

Press the Confirm soft key to confirm these

details.

Figure 12C-99

The Vehic le Identification Number / TIS Hardware

Key Number will be displayed.

Figure 12C-100

BODY MENU

The Body Menu will be displayed.

Figure 12C-101

5.10 F0 : NORMAL MODE

The instrument normal mode data list is used to

view serial data being sent to the instrument

cluster.

Figure 12C-102

5.11 F1: DIAGNOSTIC TROUBLE CODES

DIAGNOSTIC TROUBLE CODES MENU

F0: Read DTC Information - If this mode is

selected, a listing of all (if any) DTC that have

been set by the combined instrument assembly

will be displayed.

NOTE:

If any DTC are set, reference should be made to

the relevant diagnostic charts in this Section.

F1: Clear DTC Information - DT C c an be c leared

in this mode by simply selecting F1: Clear DTC

Inform ation, pressing the Enter button on T ECH 2

and confirming the action as instructed by TECH

NOTE:

TECH 2 will display Clear DTC Information Failed

if any DTC are still current.

Figure 12C-103

READ DTC INFORMATION

Select F0: Read DTC Information.

Use the following table to ass ist in diagnosing and

rectifying DTC.

NOTE:

Screen shot shows an example of 2 DTC only.

Figure 12C-104

The following chart sets out all the possible

diagnostic trouble codes as indicated by TECH 2.

Numbers not listed are reserved for future use.

DTC CODE DESCRIPTION

1 Fuel gauge sender unit – short circuit

2 Fuel gauge sender unit – intermittent

3 Fuel gauge sender unit – open circuit

4 LPG gauge sender unit – open circuit

5 LPG gauge sender unit – short circuit

6 LPG gauge sender unit – intermittent

8 No serial data from ABS

9 No serial data from BCM

10 No serial data from ECC

11 No serial data from PCM

12 No serial data from SDM

13 No instrument poll from BCM

14 No serial communication

16 ABS or ABS/ETC fault logged

17 BCM fault logged

18 ECC fault logged

19 PCM fault logged

20 SDM fault logged

24 EE checksum error

25 ROM checksum error

26 Internal fault

5.12 F2: DATA DISPLAY

Inthis test mode, the status of the instrument

cluster inputs and outputs can be monitored.

Select either F0: Instrument or F1: Trip Com puter

from the data display screen.

Figure 12C-105

F0: INSTRUMENT

The serial data from the instruments can be

checked and tested by selecting the instrument

and pressing the Select Items soft key. The list

can be scrolled by using the Up and Down arrow

keys.

Figure 12C-106

Use the Up and Down arrow keys to navigate

through the items.

Figure 12C-107

NOTE:

Traction control data list parameters are only

applicable if ABS/ETC is fitted.

Figure 12C-108

F1: TRIP COMPUTER

Figure 12C-109

Figure 12C-110

The following table lists each item contained in the

data stream together with a brief description of its

meaning.

DATA STREAM / SCREEN

DISPLAY DESCRIPTION UNIT

Battery Voltage Displays current battery voltage (approximately 12 volts). Volts

Vehicle Speed Displays current vehicle speed km/h

Ignition Switch Displays the current status of the ignition switch On/Off

Engine Speed Displays current engine speed RPM

Instrument Lamps Displays the current level of instrument lamps illumination

(0-100%) %

Park Lamp Input Displays status of the park lamps switch On/Off

Brake Lamp Used to check operation of brake lamp On/Off

Bulb Failed Warning Lamp Used to check operation of bulb failed warning lamp On/Off

Seat Belt Lamp Used to check operation of seat belt lamp On/Off

SRS Lamp Used to check operation of SRS lamp On/Off

Cruise Control Input Displays status of cruise control input On/Off

Cruise Control Lamp Used to check operation cruise control lamp On/Off

Low Fuel Lamp Used to check operation of low fuel lamp On/Off

Overspeed Lamp Used to check operation of overspeed lamp On/Off

Power Shift Lamp Displays status of power shift button On/Off

PRNDL Position Displays position of transmission selector lever INVALID

Oil Pressure Lamp Used to check operation of oil pressure lamp On/Off

High Coolant Temperature Lamp Used to check operation of high coolant temperature lamp On/Off

Low Coolant Level Lamp Used to check operation of low coolant level lamp On/Off

Engine Coolant Temperature Displays signal from engine temperature On/Off

Check Powertrain Lamp Used to check operation of check power train lamp On/Off

Traction Control Off Lamp Used to check operation of traction control disabled lamp On/Off

LPG In Use Lamp Used to check operation LPG in use lamp On/Off

LPG Sender Signal Displays signal from LPG sender 5 volts

LPG Sender Resistance Displays LPG gauge sender unit resistance 35.2 - 253.3

ohms

variable

Fuel Gauge Display Used to check operation of fuel gauge display 18%

Fuel Gauge Sender Signal Displays signal from fuel tank sender 0 - 5 volts

variable

Petrol Sender Resistance Displays petrol gauge sender unit resistance 35.2 - 253.3

ohms

variable

5.13 F3: SNAPSHOT

In this test mode, the TECH 2 captures data list

informationm before and/or after a forced manual

trigger.

5.14 F4: MISCELLANEOUS TESTS

Miscellaneous Tests allows for the testing of

various components of the instrument cluster,

such as instrument and warning lamps, switches

and instrument gauges.

F0: Lamps - once this m ode is selected, lam ps in

the instrument assembly may be tested.

F1: Buzzer - operation of the buzzer can be

tested with this function.

F2: PRNDL Lamps - once this mode is selected,

the PRNDL lamps in the instrument assembly

may be tested by moving the transmission

selector lever through its various positions.

F3: Trip Computer Buttons - once this mode is

selected, the buttons on the trip c omputer m ay be

tested.

F4: LPG Mode - once this mode is selected, the

LPG mode may be tested.

F5: Park Lamp Input - once this mode is

selected, the park lamp input may be tested.

F6: Cruise Engaged Input - once this mode is

selected, DTC stored in the control module

memory may be cleared.

F7: Brake (Park And Fail) Input - onc e this mode

is selected, the park brake and brake fail input

may be tested.

F8: Control Tests - this function is used to test

the operation of the speedometer, tachometer,

engine coolant temperature, fuel gauge and sets

the function lamps illumination.

Figure 12C-111

F0: LAMPS

F0: Lamps function provides a means of testing

the correct operation of various warning/status

lamps in the instrument assembly.

Use the Up and Down arrow keys to scroll thr ough

the list and highlight a lamp.

Press the Enter button to test the selected lamp.

Figure 12C-112

The adjacent figure shows the remainder of the

F0: Lamps menu.

Figure 12C-113

Once a lamp has been highlighted and selected,

the TECH 2 will show the following screen.

Current serial data will be shown at the top of the

screen and the selected lamp and its current

status will be displayed at the bottom.

Press the O n s of t key to turn the selected lam p on

and note its status on the instrument assembly.

If the lamp does not come on and the TECH 2

display indicates that it is, there is a fault in the

lamp and the bulb will need to be replaced.

Press the Off soft key to turn the lamp off.

Press the Quit soft key to continue and return to

the previous screen. Figure 12C-114

F1: BUZZER

The operation of the buzzer can be tested, and a

1 kHz tone will be emitted from the instrument

buzzer.

Soft keys: Quit, On and Off

F2: PRNDL LAMPS

Not used.

F3: TRIP COMPUTER BUTTONS

F0: Mode Button

With this test a mode button press can be

simulated. This is to test if the button is stuck or

the instrument is not working properly.

F1: Up Button

With this test an up button press can be

simulated. This is to test if the button is stuck or

the instrument is not working properly.

F2: Down Button

With this test a down button press can be

simulated. This is to test if the button is stuck or

the instrument is not working properly.

F4: LPG MODE

This function allows the TECH 2 user to enable or

disable the instrument LPG mode for testing

purposes. The LPG lamp will illuminate and the

fuel gauge will indicate the level of the LPG tank.

F5: PARK LAMP INPUT

This test allows the T ECH 2 user to turn enable or

disable the park lamps input. This will dim the

Power, Cruise and LPG lam ps only. It will have no

effect on the other warning lamps or instrument

assembly illumination.

F6: BRAKE (PARK AND FAIL) INPUT

This function allows the TECH 2 user to enable or

disable the brake (park and fail) input.

F7: CONTROL TESTS

Control Tests allow the TECH 2 user to force

known values into the speedometer, tachometer,

engine coolant tem perature gauge and fuel gauge

to verify their correct operation.

Figure 12C-115

Vehicle Speed

This function controls the speedometer.

Comm anded vehicle speed can be adjusted up or

down in 20 km /h steps f rom 0 k m /h to a m axim um

value of 220 km/h. Ensure that the speedometer is

accurate according to the following table.

Commanded

Vehicle

Speed

Speedo

Error Acceptable

Readings on

Speedometer

60 km/h –1/+3 km/h 59 – 63 km/h

100 km/h –1/+3 km/h 99 – 103 km/h

160 km/h –1/+5 km/h 159 – 165 km/h

Engine Speed

This functions controls the tachometer.

Comm anded engine speed c an be adjusted up and

down in 1000 rpm steps with a maximum value of

6000 rpm. Ensure that the tachometer is accurate

according to the following table.

Commanded

Engine Speed Acceptable Readings on

Tachometer

1000 RPM 860 – 1140 RPM

3000 RPM 2860 – 3140 RPM

5000 RPM 4860 – 5140 RPM

Engine Coolant Temperature

This function controls the temperature gauge.

There are three steps when testing the tem perature

gauge; cold, mid and hot. The test is conducted

using the Up and Down soft keys.

Fuel Gauge

This function controls the fuel gauge. There are

three steps when testing the fuel gauge; empty, half

and full. The test is conducted using the Up and

Down soft keys.

Function Lamps Illumination

This function controls the function lam ps. Note that

this test applies only to the Power, Cruis e and LPG

lamp illumination level. The illumination can be

adjusted in increments of 20% from 0% to 100%.

The function lamps are turned on automatically

when the test is being performed.

5.15 F5: PROGRAM

Turn ignition off.

Connect TECH 2 to the vehicle, refer to

5.6 CONNECTING THE TECH 2.

Navigate through the TECH 2 m enus to display the

ECC Applicatiom Menu.

Select F5: Program.

Body

F0: N orm al M ode

F2: Data Display

F1: Diagnostic Trouble Codes

F3: Snaps hot

F4: M iscellaneous T ests

F5: Program

T12C157

Figure 12C-113

F0: INSTRUMENT CONFIGURATION

Select F0: Instrument Configuration.

Program

F0: Instrument Configuration

F2: Odometer V alue

F1: Options

F3: Fuel Gauge Calibration

F4: Reset Service Interval

F5: Reset User Calibration

T212C159

Figure 12C-114

Using the Next soft key, step through each

parameter and modify as necessary.

Press the Confirm soft key to continue.

Instrum en t Configuration

(X) 1999 V T Comm odore

Step Through Each Parameter And Modify

If Nece ssary.

C onfirm Program m ing At The End.

E lec tro nic S ystem: Ins trume nt

T212C158

Figure 12C-115

Techline

1. SRS Configuration

Press Modify soft key to set to one of the

following options:

• No SRS

• 2 Loop SRS

• 3 Loop SRS

• 4 Loop SRS

• 6 Loop SRS

NOTE: Configuration of the various SRS

systems is as follows:

• a 2-loop system is for left-hand drive

vehicles with pre-tensioners only.

• a 3-loop system is for vehicles with pre-

tensioners and driver’s air bag only.

• a 4-loop system is for vehicles with pre-

tensioners, driver’s air bag and front

passenger’s air bag only.

• a 6-loop system is for vehicles with pre-

tensioners, driver’s air bag, front

passenger’s air bag and side air bags.

Instrum en t Configuration

(X) 1999 V T Comm odore

SRS C onfiguration 6 Loop SRS

E lec tro nic S ystem: Ins trume nt

T212C160

Figure 12C-116

2. SRS Lamp

Press Modify soft key to set to -

Enabled/Disabled.

• For all models, set to Enabled.

Instrum en t Configuration

(X) 1999 V T Comm odore

SRS Lam p Enabled

E lec tro nic S ystem: Ins trume nt

T212C161

Figure 12C-117

3. Speedometer Pulses

Press Modify soft key to set the speedometer

pulses per kilometre for the correct tyre size.

Nominal value is 6250 pulses per km.

• Tyre size 205 65 R15, select 6272 pulses.

• Tyre size 215 60 R15, select 6285 pulses.

• Tyre size 215 60 R16, select 6077 pulses.

• Tyre size 225 50 R16, select 6391 pulses.

• Tyre size 225 55 R16, select 6087 pulses.

• Tyre size 225 60 R15, select 6238 pulses.

• Tyre size 235 45 R17, select 6301 pulses.

Instrum en t Configuration

(X) 1999 V T Comm odore

Speedom eter Pulses 6250

E lec tro nic S ystem: Ins trume nt

T212C162

Figure 12C-118

Techline

4. Speedometer Calibration

If the Police Mode has been enabled at

F5: Program / F1: Options, the speedometer

calibration screen appears next. This allows

the speedometer to be calibrated.

Press the Modify soft key to adjust the

speedom eter calibration, or the Next s oft k ey to

continue.

Instru ment Conf igur a t ion

(X) 1999 VT Commodore

Speedometer Calibratio n 100%

Electronic System: Instrument

T212C198

Figure 12C-119

5. Tachometer Ratio

Press Modify soft key to set to - V6 or V8

Gen 3.

• Only V6 and V8 Gen 3 are applicable to the

VT Series II.

Instru ment Conf igur a t ion

(X) 1999 VT Commodore

Tachometer Ratio V6

Electronic System: Instrument

T212C163

Figure 12C-120

6. High Voltage Tachometer

Press Modify soft key to set to - Disabled.

• For V6 engine, set to Disabled.

• For GEN III V8 engine, set to Disabled.

Instrum en t Configuration

(X) 1999 V T Comm odore

High V oltage Tachometer Disabled

E lec tro nic S ystem: Ins trume nt

T212C164

Figure 12C-121

7. ECC Equipped

Press Modify soft key to set to -

Enabled/Disabled.

• For vehicles equipped with a tripple window

display set to – Enabled.

• For vehicles equipped with single window

instruments set to – Disabled.

Inst ru me nt Conf igur a tion

(X) 1999 VT Co mm o dor e

Electronic System: Instrument

ECC Option Enabled

T212C164A

Figure 12C-48A

8. Program Instrument Confirm

Press Abort soft key to abandon process, or

press Program soft key to confirm parameters.

Press Confirm soft key when programming is

completed.

Inst ru me nt Conf igur a tion

(X) 1999 VT Co mm o dor e

Electronic System: Instrument

SRS Configuration

SRS Lamp

Speedometer Pulses

Speedometer Calibration

Ta cho m eter Ratio

H igh Volta ge Tachometer

ECC Option

6 Loo p SR S

Enabled

625 0

100 %

Disabled

Enabled

T212C165A

Figure 12C-122

F1: OPTIONS

Options such as instrument lamp illumination

enable/disable and Police Mode can be set by

selecting F1: Options from the Program Menu.

Program

F0: Instrument Configuration

F2: Odometer V alue

F1: Options

F3: Fuel Gauge Calibration

F4: Reset Service Interval

F5: Reset User Calibration

T212C159

Figure 12C-123

Using the Next soft key, step through each

parameter and modify as necessary.

Press Confirm soft key to continue.

Options

(X) 1999 V T Comm odore

Step Through Each Parameter And Modify

If Nece ssary.

C onfirm Program m ing At The End.

E lec tro nic S ystem: Ins trume nt

T212C183

Figure 12C-124

1. Rear Lamp Failure Lamp

Press Modify soft key to set to -

Enabled/Disabled.

• For Calais, set to Enabled.

• For all other models, set to Disabled.

Options

(X) 1999 V T Comm odore

Rear Lamp Failure Lamp Enabled

E lec tro nic S ystem: Ins trume nt

T212C167

Figure 12C-125

2. Trac tion Control Off Lamp

Press Modify soft key to set to -

Enabled/Disabled.

• For Calais, set to Enabled.

• For other models, check if the option is

fitted. If not fitted, set to Disabled.

Options

(X) 1999 V T Comm odore

Traction C ontrol Off Lam p Enabled

E lec tro nic S ystem: Ins trume nt

T212C168

Figure 12C-126

3. LPG Lamp

Press Modify soft key to set to -

Enabled/Disabled.

• For V6 engine, check if the option is fitted. If

not fitted, set to Disabled.

• For GEN III V8 engine, set to Disabled.

Options

(X) 1999 V T Comm odore

LPG Lam p Disabled

E lec tro nic S ystem: Ins trume nt

T212C169

Figure 12C-127

4. Cruise On Lamp

Press Modify soft key to set to -

Enabled/Disabled.

• For Berlina and Calais, set to Enabled.

• For other models, check if the option is

fitted. If not fitted, set to Disabled.

Options

(X) 1999 VT C omm od ore

C ruise O n Lam p Enabled

E lectro nic S ystem : In strum e nt

T212C170

Figure 12C-128

5. Police Mode

Press Modify soft key to set to -

Enabled/Disabled.

• For Police vehicles only, set to Enabled.

• For all other vehicles, set to Disabled.

Options

(X) 1999 V T Comm odore

Polic e Mo de Disabled

E lec tro nic S ystem: Ins trume nt

T212C171

Figure 12C-129

6. Low Coolant Lamp

Press Modify soft key to set to -

Enabled/Disabled.

• For V6 engine, set to Disabled.

• For GEN III V8 engine, set to Enabled.

Options

(X) 1999 V T Comm odore

Low Coolant Lam p Disabled

E lec tro nic S ystem: Ins trume nt

T212C172

Figure 12C-130

7. High Temperature Lamp

Press Modify soft key to set to - Enabled.

Options

(X) 1999 V T Comm odore

High Temperature Lamp Enabled

E lec tro nic S ystem: Ins trume nt

T212C184

Figure 12C-131

8. Program Options Confirm

Press Abort soft key to abandon process, or

press Program soft key to confirm parameters.

Press Confirm soft key when programming is

completed.

Options

(X) 1999 VT C omm od ore

Trac t io n C o n t ro l L a mp Enabled

R ear Lam p F ailure Lam p Ena bled

C ruise O n Lam p Enabled

Low Co olant Lam p Disabled

High Temperature Lamp Enabled

E lectro nic S ystem : In strum e nt

LPG Lam p Disabled

Po lic e Mo d e Disabled

T212C173

Figure 12C-132

9. Speedometer Calibration

NOTE: This is only available in TECH 2 when

instrument has been configured to Police

mode.

Turn the ignition off.

Hold down the MODE button as well as the ▲

and ▼ buttons on the trip computer.

Turn the ignition on while holding down the

three buttons.

Release the MODE button after 3 seconds,

then release the other two buttons. The

calibration value will now be flashing and C will

be displayed.

The calibration value (in percentage) can now

be adjusted with the ▲ and ▼ buttons. Set to

80% - 120% as necessary.

W hen the calibration has been achieved, press

the MODE button to lock in the c alibration data

and return to the normal display.

F2: ODOMETER VALUE

NOTE: It is only possible to program the odometer

reading on an instrument once the TIS approval

code has been obtained and on an instrument

which presently reads no more than 100 km.

F3: FUEL GAUGE CALIBRATION

Select F3: Fuel Gauge Calibration.

Program

F0: Instrument Configuration

F2: Odometer V alue

F1: Options

F3: Fuel Gauge Calibration

F4: Reset Service Interval

F5: Reset User Calibration

T212C159

Figure 12C-133

The next screen displays the instrument Code

Index and Code Version. If these need to be

updated, press the Modify soft key, otherwise

press the Okay soft key.

Fuel Gauge Ca libration

(X) 1999 V T Comm odore

C ode Index

Code Version 1

E lec tro nic S ystem: Ins trume nt

T212C196

Figure 12C-134

Select the vehicle type, press Enter and wait for

the programming to be completed.

Press the Confirm soft key when programming is

completed.

F u e l Ga u g e C a lib r at io n

(X ) 199 9 V T C o m mod o re

E lectro n ic System: In strumen t

T212C197

Se dan Calibration

Wagon C alibration

Figure 12C-135

F4: RESET SERVICE INTERVAL

Select F4: Reset Service Calibration.

Press the Abort soft key to abandon the process,

or press the Reset soft key to reset the service

interval.

Press the Confirm soft key when programming is

completed.

Reset Service Interval

(X) 1999 VT Commodore

Reset Service Interval ?

Electronic System: Instrument

T212C199

Figure 12C-136

F5: RESET USER CALIBRATION

Select F5: Reset Service Calibration.

Press the Abort soft key to abandon the process,

or press the Reset soft key to reset the following

parameters:

• Trip Distance Calibration

• Fuel Used Calibration

• Speedometer Calibration

Press the Confirm soft key when programming is

completed.

Reset User Calibration

(X) 1999 VT Commodore

Reset User Calibration ?

Electronic System: Instrument

T212C200

Figure 12C-137

6. TORQUE WRENCH SPECIFI CATIONS

Instrument Assembly Attaching Screws 1 - 3

Front Wiper Arm Attaching Nut 20 - 25

Front Wiper Motor to Linkage Screws 7 - 9

Front Wiper Motor Crank Arm Pivot to

Linkage Nut 16 - 20

Front Wiper Motor and Linkage Assembly

Securing Screws 4 - 6

Rear Wiper Arm Attaching Nut 6 - 14

Rear Wiper Motor Attaching Screw 6 - 14

Horn Securing Bolt 15 - 35

Theft Deterrent Horn Bolt 20 - 27

7. SPECIAL TOOLS

TOOL NO. REF IN TEXT TOOL DESCRIPTION COMMENTS

J39200 DIGITAL MULTIMETER TOOL NO. J39200

PREVIOUSLY RELEASED, OR

USE COMMERCIALLY

AVAILABLE EQUIVALENT.

MUST HAVE 10 MEG OHM

INPUT IMPEDANCE

KM-609 CONNECTOR TEST ADAPTOR KIT PREVIOUSLY RELEASED FOR

V CAR. USED IN

CONJUNCTION WITH A

MULTIMETER FOR

MEASURING VOLTAGES AND

RESISTANCES WITHOUT

DAMAGING WIRING

HARNESS CONNECTORS

KM-609-20 SRS TEST LEAD SET PREVIOUSLY RELEASED

70000861 TECH 2 DIAGNOSTIC SCAN TOOL MANDATORY TOOL USED

FOR DIAGNOSIS OF VEHICLE

ELECTRICAL SYSTEMS