Rear Park Assist Page 12F1–1

Page 12F1–1

Section 12F1

Rear Park Assist

ATTENTION

Before performing any Service Operation or other procedure described in this Section, refer to Section 00

Warnings, Cautions and Notes for correct workshop practices with regard to safety and/or property damage.

1 General Information ...............................................................................................................................4

1.1 Operation................................................................................................................................................................ 5

Detection and Warning – Rear Objects................................................................................................................ 5

Provisions for Towbar Fitment............................................................................................................................ 5

1.2 Components........................................................................................................................................................... 6

Rear Object Sensor Control Module and Alarm Assembly................................................................................ 6

Sedan................................................................................................................................................................. 6

Coupe................................................................................................................................................................. 6

AWD Wagon ...................................................................................................................................................... 7

Rear Object Sensor Assembly.............................................................................................................................. 8

Sedan................................................................................................................................................................. 8

Coupe................................................................................................................................................................. 9

AWD Wagon .................................................................................................................................................... 10

Wiring Harness Assembly................................................................................................................................... 11

Sedan............................................................................................................................................................... 11

Coupe............................................................................................................................................................... 12

AWD Wagon .................................................................................................................................................... 13

2 Diagnostics...........................................................................................................................................14

2.1 Prerequisites........................................................................................................................................................ 14

Equipment ............................................................................................................................................................ 14

Testing Procedures ............................................................................................................................................. 14

2.2 Wiring Diagrams – V6.......................................................................................................................................... 15

Manual Transmission .......................................................................................................................................... 15

Automatic Transmission 4-Speed...................................................................................................................... 16

Automatic Transmission 5-Speed...................................................................................................................... 17

2.3 Wiring Diagrams – V8.......................................................................................................................................... 18

Manual Transmission .......................................................................................................................................... 18

Automatic Transmission 4-Speed...................................................................................................................... 19

2.4 Connector Charts................................................................................................................................................. 20

All Except V6 Automatic Transmission 5-Speed............................................................................................... 20

V6 Automatic Transmission 5-Speed................................................................................................................. 21

2.5 Electrical Diagnosis............................................................................................................................................. 22

Introduction.......................................................................................................................................................... 22

2.6 Electrical Self Test Diagnosis............................................................................................................................. 23

2.7 Ground Connection Circuit Test......................................................................................................................... 24

Introduction.......................................................................................................................................................... 24

Circuit Description............................................................................................................................................... 24

Test Descriptions................................................................................................................................................. 24

Diagnostic Table Notes ....................................................................................................................................... 24

Diagnostic Table.................................................................................................................................................. 24

Techline

Rear Park Assist Page 12F1–2

Page 12F1–2

2.8 Power Input Circuit Test...................................................................................................................................... 26

V6 Manual Transmission..................................................................................................................................... 26

Introduction ...................................................................................................................................................... 26

Circuit Description............................................................................................................................................ 26

Test Description ............................................................................................................................................... 26

Diagnostic Table Notes .................................................................................................................................... 26

Diagnostic Table............................................................................................................................................... 27

4 Speed Auto Transmission and V8 Manual Transmission ............................................................................. 28

Introduction ...................................................................................................................................................... 28

Circuit Description............................................................................................................................................ 28

Test Description ............................................................................................................................................... 28

Diagnostic Table Notes .................................................................................................................................... 28

Diagnostic Table............................................................................................................................................... 29

5 Speed Auto Transmission................................................................................................................................ 30

Introduction ...................................................................................................................................................... 30

Circuit Description............................................................................................................................................ 30

Test Description ............................................................................................................................................... 30

Diagnostic Table Notes .................................................................................................................................... 30

Diagnostic Table............................................................................................................................................... 30

2.9 Self Diagnosis Circuit Test.................................................................................................................................. 32

Introduction.......................................................................................................................................................... 32

Circuit Description............................................................................................................................................... 32

Diagnostic Table Notes ....................................................................................................................................... 32

Diagnostic Table.................................................................................................................................................. 32

2.10 No Audible Tone From Alarm ............................................................................................................................. 33

Introduction.......................................................................................................................................................... 33

Circuit Description............................................................................................................................................... 33

Diagnostic Table Notes ....................................................................................................................................... 33

Diagnostic Table.................................................................................................................................................. 33

2.11 Object Sensor Circuit Test.................................................................................................................................. 34

Introduction.......................................................................................................................................................... 34

Circuit Description............................................................................................................................................... 34

Test Descriptions................................................................................................................................................. 34

Diagnostic Table Notes ....................................................................................................................................... 34

Diagnostic Table.................................................................................................................................................. 35

2.12 Rear Object Sensor Control Module Pin Assignments .................................................................................... 36

3 Service Operations...............................................................................................................................37

3.1 Rear Object Sensor Control Module Assembly................................................................................................. 37

Sedan.................................................................................................................................................................... 37

Remove............................................................................................................................................................ 37

Reinstall ........................................................................................................................................................... 37

Coupe.................................................................................................................................................................... 38

Remove............................................................................................................................................................ 38

Reinstall ........................................................................................................................................................... 38

AWD Wagon ......................................................................................................................................................... 39

Remove............................................................................................................................................................ 39

Reinstall ........................................................................................................................................................... 39

3.2 Rear Object Sensor Alarm Assembly................................................................................................................. 40

Sedan.................................................................................................................................................................... 40

Remove............................................................................................................................................................ 40

Reinstall ........................................................................................................................................................... 40

Coupe.................................................................................................................................................................... 41

Remove............................................................................................................................................................ 41

Reinstall ........................................................................................................................................................... 41

AWD Wagon ......................................................................................................................................................... 42

Remove............................................................................................................................................................ 42

Reinstall ........................................................................................................................................................... 42

Rear Park Assist Page 12F1–3

Page 12F1–3

3.3 Rear Object Sensor Assembly and Wiring Harness......................................................................................... 43

Sedan.................................................................................................................................................................... 43

Remove............................................................................................................................................................ 43

Reinstall ........................................................................................................................................................... 44

Coupe.................................................................................................................................................................... 44

Remove............................................................................................................................................................ 44

Reinstall ........................................................................................................................................................... 45

AWD Wagon ......................................................................................................................................................... 45

Remove............................................................................................................................................................ 45

Reinstall ........................................................................................................................................................... 46

Rear Park Assist Page 12F1–4

Page 12F1–4

1 General Information

Rear Park Assist (RPA) is an electronic system designed to provide an acoustic tone informing the driver of obstacles at

or near the rear of the vehicle during low speed maneouvres such as parking.

The RPA does not relieve the driver of duty of

care when reversing the vehicle. Caution

must always be exercised w hen driving at any

time.

The RPA primarily consists of four ultrasonic object sensor assemblies mounted to the rear bumper fascia and an

electronic control module assembly which incorpor ates an a larm assembly. Sonar is used to detect the presence of

obstacles within a defined area, b y measuring the time between the transmission and reception (ec ho) of sound waves.

When reverse gear is selected, the sensors sequentially transmit short ultrasonic pulses and then listen for an echo

reflected from an object within range. T he electronic control module uses echo data from one or more sensors to

calculate the distance to the obstacle.

An audible intermittent tone is sounded through the alarm informing the driver that an obstacle has been detected within

the range of the system. As the distance to the obstacle draws closer, the frequency of the tone increases until it

becomes constant at a distance of approximately 30 cm or, for vehicles fitted with a towbar, 45 cm.

NOTE

Some sound absorbing or reflecting material s can

effect the range of detection. In extreme cases,

temporary non-detection of ob stacles can result.

The RPA only signifies the closest detected object.

While operational, the control module constantly monitors the system for faults. Should a fault occur, an audible warning

is indicated to the driver. A dia gnosis system aids the technician in locating the source of the fault.

Rear Park Assist Page 12F1–5

Page 12F1–5

1.1 Operation

Detection and Warning – Rear Objects

When the ignition is on and reverse gear is selected, a tone

will sound from the alarm for a period of 0.5 seconds to

indicate system readiness.

The control module provides a voltage to each sensor

sequentially which is converted into an ultrasonic pulse.

Where an object is within the detection range, the ultrasonic

pulse is reflected (echoed) and received by the same and/or

adjacent sensors.

The echoes are amplified, processed and returned to the

control module as a digital signal. The control module

processes this information and informs the driver of the

object by activating an intermittent acoustic tone through the

alarm.

The four sensors are mounted onto the rear bumper fascia

in an arrangement that provid es a slight overlap of the polar

patterns. This provides the best coverage of the detection

area. The maximum detection distance of 150 cm is set by

the control module software.

The detection area is divided into five warning zones. As

listed in the following table, the tone-o n to tone-off peri od

shortens as the distance to the detected object decreases.

Figure 12F1 – 1

Warning Range (cm) Frequency (Hz) Tone On Tone Off

Less than 30 1200 Continuous

30 – 40 1200 75 ms 75 ms

40 – 60 1200 75 ms 150 ms

60 – 80 1200 75 ms 225 ms

80 – 100 1200 75 ms 300 ms

100 – 120 1200 75 ms 375 ms

120 – 150 1200 75 ms 450 ms

Hardware Error 700 Continuous at power up

Error Message 700 Continuous at power up

Ready Tone, Reverse Engage d 1200 0.5 sec

Provisions for Towbar Fitment

When a towbar is fitted, the continuous tone activation area is increased from 30 to 45cm to allow for the length of the

towbar tongue. This is achieved by the towbar installer disconnecting the white wiring connector X9 06 causing an open

in the power supply circuit 24 and 796 to the control module (pin 15).

When the correct accessory trailer wiring harness is installed, the system can be temporarily disabled while towing. The

black connector X907 in circ uit 650 and 471 is also disconnected by the installer and the grey wire in the trailer harness

connected.

While the trailer socket dust-flap is closed, a magnet in the dust-flap closes a reed-switch in the trailer socket which

connects this circuit to ground through circuit 22.

When the dust-flap is opened, as in connecting a trailer plug, the switch opens. The control module detects the open

circuit and disables the system.

If a bicycle carrier is fitted onto the towbar, a licence plate lamp and tail lamp should be fitted to the carrier and plugged

into the trailer socket. This will also temporarily disabl e the system, as it is highly likely the bicycles will cause a

disturbance to the detection field.

The rear park assist can also be disa bled by disconnecting connector X907. In this instance, the presence or absence of

a connector in the trailer socket is ignor ed.

Rear Park Assist Page 12F1–6

Page 12F1–6

1.2 Components

Rear Object Sensor Control Module and Alarm Assembly

The role of the control module is to trigger ultrasonic pulses sequentially from each sensor and monitor the sensors for

any received pulses (ec hoes from an object). The signals are then filtered and the distance of the object is calculated

from the time elapsed bet ween the transmission of the signal and its reception using triangulation d ata from one or more

sensors. The control module also controls th e output tones through the alarm, and has a self-diagnosis function.

The control module also provides a stable voltage supply to the rear object sensors and circuits to protect the sensors

against over-voltage.

Sedan

The rear object sensor control module (1) and alarm (2) are joined together. They are mounted as an assembly to the

rear window panel, refer to Figure 12F1 – 2.

Figure 12F1 – 2

Coupe

The rear object sensor control module and alarm are joined together. They are mounted a s an assembly (1) to the right-

hand rear radio speaker bracket, refer to Figure 12F1 – 3.

Figure 12F1 – 3

Rear Park Assist Page 12F1–7

Page 12F1–7

AWD Wagon

The rear object sensor control module (1) is located behind the right-hand rear seat bolster assembly, refer to Figure

12F1 – 4.

The rear object sensor alarm (2) is located in the roof cavity under the headlining at the right-hand rear of the vehicle.

Figure 12F1 – 4

Rear Park Assist Page 12F1–8

Page 12F1–8

Rear Object Sensor Assembly

Sedan

There are four sensors mounted in the rear b umper fascia. Each sensor operates as a transmitter and receiver of

ultrasonic pulses. The received electronic pulses (echoes) are amplified, processed and returned to the control module

as a digital signal.

Each of the four rear object sensor assemblies (1) are mounted in a rear object sensor housing (2) which is heat-staked

to the rear bumper fascia. The housings a llow easy removal of the sensor and rear object sensor ring (3), refer to Figure

12F1 – 5.

Figure 12F1 – 5

If the rear bumper fascia assembly is to be replaced, undamaged housings can be removed from the bumper fascia by

cutting the four attaching heat-stakes. T he housing can then be heat-staked onto the new fascia with a soldering iron,

refer to Section 1D Bumper Bars. If the housings are damaged, replac ement parts are available. New housings are to be

painted to match the bumper fascia using similar methods to painting the fascia, refer to Section 1D Bumper Bars.

The rear object sensor is supplied with the exposed surface painted in the vehicle’s bod y c olo ur.

• Replacement rear object sensor

assemblies are sup plied pre-painted in the

vehicle's body colour. Do not apply further

paint to the rear ob ject sensor as semblies,

as it will have a detrimental effect on the

operation of the rear object sensor

assemblies.

• The rear object sensor ring prevents

vibrations from the rear object sensor

assembly being transferred to the

surrounding components. Incorrect

fitment will change the characteristics of

the rear object sensor assembly.

Rear Park Assist Page 12F1–9

Page 12F1–9

Coupe

There are four sensors mounted in the rear b umper fascia. Each sensor operates as a transmitter and receiver of

ultrasonic pulses. The received electronic pulses (echoes) are amplified, processed and returned to the control module

as a digital signal.

Each of the four rear object sensor assemblies (1) are mounted in a rear object sensor housing (2) which is heat-staked

to the rear bumper fascia. The housings a llow easy removal of the sensor and rear object sensor ring (3), refer to Figure

12F1 – 6.

Figure 12F1 – 6

If the rear bumper fascia assembly is to be replaced, undamaged housings can be removed from the bumper fascia by

cutting the four attaching heat-stakes. T he housing can then be heat-staked onto the new fascia with a soldering iron,

refer to Section 1D Bumper Bars. If the housings are damaged, replac ement parts are available. New housings are to be

painted to match the bumper fascia using similar methods to painting the fascia, refer to Section 1D Bumper Bars.

The rear object sensor is supplied with the exposed surface painted in the vehicle’s bod y c olo ur.

• Replacement rear object sensor

assemblies are sup plied pre-painted in the

vehicle's body colour. Do not apply further

paint to the rear ob ject sensor as semblies,

as it will have a detrimental effect on the

operation of the rear object sensor

assemblies.

• The rear object sensor ring prevents

vibrations from the rear object sensor

assembly being transferred to the

surrounding components. Incorrect

fitment will change the characteristics of

the rear object sensor assembly.

Rear Park Assist Page 12F1–10

Page 12F1–10

AWD Wagon

Each of the rear object sensor assemblies (1) is mounted in a rear object sensor housing (3), which is retained by clips to

the rear bumper fascia assembly. The rear o bject sensor housings allow for easy removal of the rear object sensor

assembly and the rear object sensor ri ng (2), refer to Figure 12F1 – 7.

Figure 12F1 – 7

Each rear object sensor assembly operates as a transmitter and receiver of ultrasonic pulses. The exposed surface is

supplied painted in the vehicle's colour.

• Replacement rear object sensor

assemblies are sup plied pre-painted in the

vehicle's body colour. Do not apply further

paint to the rear ob ject sensor as semblies,

as it will have a detrimental effect on the

operation of the rear object sensor

assemblies.

• The rear object sensor ring prevents

vibrations from the rear object sensor

assembly being transferred to the

surrounding components. Incorrect

fitment will change the characteristics of

the rear object sensor assembly.

Rear Park Assist Page 12F1–11

Page 12F1–11

Wiring Harness Assembly

Sedan

The body wiring harness (1) is routed as shown, refer to Figure 12F1 – 8. The rear object sensor harness (2) connects to

the body wiring harness with connector X905 (3) near the left-hand tail lamp assembly and is routed across the inner

side of the rear bumper fascia, connecting each of the four sensors.

The white wiring connector X9 06 (4) is provided to enable modification of the detection area for the fitment of a towbar

tongue.

The diagnostic connector X156 (6) is locate d on the left-hand side of the rear compartment,

refer to 2.6 Electrical Self Test Diagnosis for further information.

Figure 12F1 – 8

Legend

1 Body Wiring Harness

2 Rear Object Sensor Harness

3 Rear Object Sensor to Body Harness Connector X905

4 Towbar Tongue Modification Connector X906 (white)

5 Trailer Harness Connector X907 (black)

6 Diagnosis Connector X156

Rear Park Assist Page 12F1–12

Page 12F1–12

Coupe

The body wiring harness (1) is routed as shown, refer to Figure 12F1 – 9. The rear object sensor harness (2) connects to

the body wiring harness with connector X905 (3) near the left-hand tail lamp assembly and is routed across the inner

side of the rear bumper fascia, connecting each of the four sensors.

The white wiring connector X9 06 (4) is provided to enable modification of the detection area for the fitment of a towbar

tongue.

The diagnostic connector X156 (6) is locate d on the left-hand side of the rear compartment,

refer to 2.6 Electrical Self Test Diagnosis for further information.

Figure 12F1 – 9

Legend

1 Body Wiring Harness

2 Rear Object Sensor Harness

3 Rear Object Sensor to Body Harness Connector X905

4 Towbar Tongue Modification Connector X906 (white)

5 Trailer Harness Connector X907 (black)

6 Diagnosis Connector X156

Rear Park Assist Page 12F1–13

Page 12F1–13

AWD Wagon

The body wiring harness (1) is routed along the right-hand side of the vehicle, refer to Figure 12F1 – 10. The body wiring

harness passes through a gro mmet to the outside of the vehicle and is connected to the rear object sensor harness (2)

using connector X905 (3). The rear object sensor harness is routed across the inside of the rear bumper fascia

assembly, connecting the four rear object sensor assemblies.

The white wiring connector X9 06 (4) is provided to enable modification of the detection area for the fitment of a towbar

tongue.

The diagnosis conn ector X156 (6) is located behind the right-hand quarter trim panel vent (8),

refer to 2.6 Electrical Self Test Diagnosis for further information.

Figure 12F1 – 10

Legend

1 Body Wiring Harness

2 Rear Object Sensor Harness

3 Rear Object Sensor to Body Harness Connector X905

4 Towbar Tongue Modification Connector X906 (white)

5 Trailer Harness Connector X907 (black)

6 Diagnostic Connector X156

7 Rear Object Sensor Control Module

8 Right-hand Quarter Trim Panel Vent

9 Rear Object Sensor Alarm Assembly

Rear Park Assist Page 12F1–14

Page 12F1–14

2 Diagnostics

This Section provides charts to assist in the diagnosis and repa ir of the rear park assist system.

2.1 Prerequisites

Equipment

The following equipment is required to diagnose the rear park assist system:

• an unpowered test lamp with a current draw of less than 3 A, and

• a digital multimeter with a minimum impe dance of 10 MΩ.

Testing Procedures

Adhere to the following points when

performing diagnostic testing on

components:

• Take care when using testing equipment

to diagnose wiring harness connectors.

Backprobe the connector to avoid terminal

damage.

• When tests are required on connector

terminals, use the adapters in the

connector adapter kit KM–609 to prevent

damage to the terminals.

• Unless the multimeter being used has an

auto-ranging function, ensure the correct

range is selected.

• When backpro bing connectors, ensure the

test lamp ground lead is connected to an

appropriate ground point on the vehicle.

Ensure this ground point is not part of the

circuit being tested.

• Where it is possible to touch connector

pins, correct Electro-Static Discharge

(ESD) protection procedures, including the

use of a grounded wrist strap and an anti-

static mat, must be followed.

NOTE

When following the steps in the di agnostic tables,

perform them in the order cited. If the required

nominal value or result is not achi eved, rectif y t he

problem before proceeding.

Rear Park Assist Page 12F1–15

Page 12F1–15

2.2 Wiring Diagrams – V6

Manual Transmission

Figure 12F1 – 11

Rear Park Assist Page 12F1–16

Page 12F1–16

Automatic Transmission 4-Speed

Figure 12F1 – 12

Rear Park Assist Page 12F1–17

Page 12F1–17

Automatic Transmission 5-Speed

Figure 12F1 – 13

Rear Park Assist Page 12F1–18

Page 12F1–18

2.3 Wiring Diagrams – V8

Manual Transmission

Figure 12F1 – 14

Rear Park Assist Page 12F1–19

Page 12F1–19

Automatic Transmission 4-Speed

Figure 12F1 – 15

Rear Park Assist Page 12F1–20

Page 12F1–20

2.4 Connector Charts

All Except V6 Automatic Transmission 5-Speed

Figure 12F1 – 16

Rear Park Assist Page 12F1–21

Page 12F1–21

V6 Automatic Transmission 5-Speed

Figure 12F1 – 17

Rear Park Assist Page 12F1–22

Page 12F1–22

2.5 Electrical Diagnosis

Introduction

The rear park assist system is initialised once the ignition is switched on and reverse gear is selected. A ready tone will

sound for a period of 0.5 seconds. In this state, the rear obje ct sensor control module continuously monitors the system

and should a fault be detected, a continuous 700 Hz tone will sound.

Rear Park Assist Page 12F1–23

Page 12F1–23

2.6 Electrical Self Test Diagnosis

The rear park assist system incorporates a self diagnostic function.

Using this electrical self test may assist in

locating the area where the fault has

occurred, however the relevant circuit

diagnostic test should be consulted before

replacing any components.

NOTE

Faults are stored in non-volatile memory within

the control module while present. Past faults are

not retained.

The rear park assist system is placed in diagnostic mode by the following method:

1 Ground connector X156 – X1 pin 1, located on the left-hand side of the rear compartme nt, refer to Figure 12F1 – 8,

Figure 12F1 – 9 or Figure 12 F 1 – 10.

2 Switch the ignition on. Do not start the engine.

3 Select reverse gear.

4 Note the tones and refer to the relevant diagnostic tables in this Section.

NOTE

If more than one error is detected, the tone will be

output in sequence separated by the End pause.

The sequence of faults will be repeated

continuously while the system remains in self-

diagnosis mode.

No Fault Continuous cyclic tone of 3 seconds On, 3 seconds Off (Start and End tone only)

Sensor 1 (right) Fault Start On Off End

Sensor 2 (right middle) Fault Start On Off On Off End

Sensor 3 (left middle) Fault Start On Off On Off On Off End

Sensor 4 (left) Fault Start On Off On Off On Off On Off End

ECM Fault Start Int Int Int End

Legend

Start – Tone on for three seconds and off for one second.

On – Tone on for one second.

Off – Tone off for one second.

End – Tone off for two seconds.

Int – Interval tone (on / off) for one second.

Rear Park Assist Page 12F1–24

Page 12F1–24

2.7 Ground Connection Circuit Test

Introduction

This test is used by the technician to aid in the diagnosis of the rear park assist system ground circuits.

Circuit Description

The rear object sensor control module is grounded through two circuits. One is a dedicated ground circuit, the other is

provided with a connection to allow integration of a trailer harness switch.

Refer to the wiring diagrams and connector charts in this Section to aid in diagnosis of the rear park assist system and

associated components.

Test Descriptions

The following numbers refer to the step numbers in the diagnostic table:

4 If the switch in the trailer harness is open, the system is disabled.

Diagnostic Table Notes

1 For all wiring harness fault diagnoses, refer to Section 12P Wiring Diagrams.

2 For wiring harness repairs, refer to Section 12P Wiring Diagrams.

3 Refer to Section 12O Fuses, Relays and Wiring Harnesses for harness routeing.

4 If the fault is deemed to be intermittent, refer to Section 12P Wiring Diagr ams.

Diagnostic Table

Step Action Value(s) Yes No

1 1 Disconnect connector A98 – X1 from the rear

object sensor control module.

2 Using a multimeter set to measure resistance,

probe between connector A 98 – X1 pin 12 and a

known ground (refer to Note 1).

Does the multimeter indicate less than the specified

value? 5 Ω

Go to Step 2

Repair or replace

circuit 650 between

connector A98 – X1

pin 12 and ground

point X118_GP14

(refer to Note 2)

2 Using a multimeter set to measure resistance, probe

between connector A98 – X1 pin 14 and a known

ground (refer to Note 1).

Does the multimeter indicate less than the specified

value? 5 Ω Ground circuits are

serviceable Go to Step 3

3 Is the vehicle fitted with a trailer harness?

– Go to Step 4

Repair or replace

circuit 471 or circuit

650 between

connector X907 pin

1 and ground point

X118_GP14 (refer

to Note 2)

4 Inspect the trailer harness socket.

Is anything plugged into the socket or is the socket dust

flap open?

–

The trailer socket

switch is open.

Remove the plug

from the socket or

close the flap.

Repeat Step 2 Go to Step 5

Rear Park Assist Page 12F1–25

Page 12F1–25

Step Action Value(s) Yes No

5 Using a multimeter set to measure resistance, probe

between connectors A98 – X1 pin 14 and X907 pin 1

(refer to Note 1).

Does the multimeter indicate less than the specified

value? 5 Ω Go to Step 6

Repair or replace

circuit 471 (refer to

Note 2)

6 Using a multimeter set to measure resistance, probe

between connectors X9 07 pin 1 and X903 pin 2 (refer to

Note 1).

Does the multimeter indicate less than the specified

value? 5 Ω

Go to Step 7

Repair or replace

the trailer harness

(refer to Note 2)

7 Using a multimeter set to measure resistance, probe

between connector X9 03 pin 2 and a known ground

(refer to Note 1).

Does the multimeter indicate less than the specified

value? 5 Ω Ground circuits are

serviceable

Repair or replace

circuit 650 between

connector X903 pin

2 and ground point

X118_GP14 (refer

to Note 2)

When all diagno sis an d repairs are completed, check the system for c orrect operation.

Rear Park Assist Page 12F1–26

Page 12F1–26

2.8 Power Input Circuit Test

V6 Manual Transmission

NOTE

Prior to performing this test, ensure the ground

circuits function correctly and nothing is

connected into the trailer socket.

Introduction

This test is used by the technician to aid in the diagnosis of the rear park assist system power circuits.

Circuit Description

The rear object sensor control module is provided with power to connector A98 – X1 pins 13 and 15 when the ignition is

on and reverse gear is selected. W hen the module detects voltage at connector A98 – X1 pin 13 but not at pin 15

(because harness connector X906 is d isco nnected) the module modifies the detection area to allow for a towbar tongue.

Refer to the relevant wiring diagram and connector chart in this Section to aid in diagnosis of the rear park assist system

and associated components.

Test Description

The following numbers refer to the step numbers in the diagnostic table:

1 Tests if the towbar tongue modification circuit is serviceable.

2 Tests if the towbar tongue modification connector X906 is correctly set.

7 Tests if the ignition control relay is supplying battery voltage to circuits 3 and 239. If the ignition control relay R21

does not operate, battery voltage will not be available to the rear park assist system. In addition, there will be other

systems inoperable, including engine/powertrain management.

9 Tests if the reverse relay is supplying battery voltage to circuit 24. If the reverse relay R12 does not operate, battery

voltage will not be availa ble to the rear park assist system. In addition, the reverse lights will not operate.

Diagnostic Table Notes

1 For all wiring harness fault diagnoses, refer to Section 12P Wiring Diagrams.

2 For wiring harness repairs, refer to Section 12P Wiring Diagrams.

3 Refer to Section 12O Fuses, Relays and Wiring Harnesses for harness routeing.

4 If the fault is deemed to be intermittent, refer to Section 12P Wiring Diagr ams.

Rear Park Assist Page 12F1–27

Page 12F1–27

Diagnostic Table

Step Action Yes No

1 1 Backprobe connector A98 – X1 pin 15 with a test lamp (refer to

Note 1).

2 Switch the ignition on and select reverse gear.

Does the test lamp illuminate?

If the vehicle is fitted

with a towbar go to

Step 2.

If the vehicle is not

fitted with a towbar

go to Step 5

If the vehicle is fitted

with a towbar go to

Step 5.

If the vehicle is not

fitted with a towbar

go to Step 3

2 Is connector X906 disconnected (to modify the sensor detection range

for the towbar tongue)? –

Disconnect

connector X906.

Go to Step 5

3 Backprobe connector X906 pin 1 with a test lamp (refer to Note 1).

Does the test lamp illuminate? Repair or replace

circuit 796 (refer to

Note 2) Go to Step 4

4 Backprobe connector A98 – X1 pin 13 with a test lamp (refer to

Note 1).

Does the test lamp illuminate?

Repair or replace

circuit 24 (refer to

Note 2) Go to Step 5

5 Backprobe connector A98 – X1 pin 13 with a test lamp (refer to

Note 1).

Does the test lamp illuminate? Power supply is

serviceable Go to Step 6

6 Check Fuse 12 in the passenger compartment fuse and relay panel

assembly and Fuse 105 in the eng ine compartment fuse and relay

panel assembly.

Are the fuses serviceable? Go to Step 7

Replace fuse and

retest. If the fuse

blows again test for

a short to ground

(refer to Note 1)

7 Backprobe connector X129 – X35 pin 87 with a test lamp (refer to

Note 1).

Does the test lamp illuminate?

Go to Step 8

Repair the ignition

control relay R21

control circuits or

replace the relay as

required (refer to

Note 1)

8 Backprobe connector X100 – X12 pin 3 with a test lamp (refer to

Note 1).

Does the test lamp illuminate? Go to Step 9

Repair or replace

circuits 239 or 3

(refer to Note 2)

9 Backprobe connector X100 – X12 pin 5 with a test lamp (refer to

Note 1).

Does the test lamp illuminate?

Repair or replace

circuit 24 (refer to

Note 2) Go to Step 10

10 Backprobe connector X100 – X12 pin 1 with a test lamp (refer to

Note 1).

Does the test lamp illuminate? Go to Step 11

Repair or replace

circuits 239 or 3

(refer to Note 2)

11 1 Remove the reverse relay R12.

2 Using a multimeter set to measure resistance, probe between

connector X100 – X12 pin 2 and a known ground (refer to

Note 1).

Does the multimeter indicate less than 5 Ω? Replace the reverse

relay R12 Go to Step 12

12 Using a multimeter set to measure resistance, probe between

connectors X100 – X12 pin 2 and S32 – X1 pin 1 (refer to Note 1).

Does the multimeter indicate less than 5 Ω? Go to Step 13

Repair or replace

circuit 38 (refer to

Note 2)

13 Using a multimeter set to measure resistance, probe between

connector S32 – X1 pin 2 and a known ground (refer to Note 1).

Does the multimeter indicate less than 5 Ω? Replace the back-

up lamp switch

Repair or replace

circuit 451 (refer to

Note 2)

When all diagno sis an d repairs are completed, check the system for c orrect operation.

Rear Park Assist Page 12F1–28

Page 12F1–28

4 Speed Auto Transmission and V8 Manual Transmission

NOTE

Prior to performing this test, ensure the ground

circuits function correctly and nothing is

connected into the trailer socket.

Introduction

This test is used by the technician to aid in the diagnosis of the rear park assist system power circuits.

Circuit Description

The rear object sensor control module is provided with power to connector A98 – X1 pins 13 and 15 when the ignition is

on and reverse gear is selected. W hen the module detects voltage at connector A98 – X1 pin 13, but not at pin 15

(because harness connector X906 is d isco nnected) the module modifies the detection area to allow for a towbar tongue.

Refer to the relevant wiring diagram and connector chart in this Section to aid in diagnosis of the rear park assist system

and associated components.

Test Description

The following numbers refer to the step numbers in the diagnostic table:

1 Tests if the towbar tongue modification circuit is serviceable.

2 Tests if the towbar tongue modification connector X906 is correctly set.

7 Tests if the ignition control relay is supplying battery voltage to circuits 3 and 239. If the ignition control relay R21

does not operate, battery voltage will not be available to the rear park assist system. In addition, there will be other

systems inoperable, including engine/powertrain management.

Diagnostic Table Notes

1 For all wiring harness fault diagnoses, refer to Section 12P Wiring Diagrams.

2 For wiring harness repairs, refer to Section 12P Wiring Diagrams.

3 Refer to Section 12O Fuses, Relays and Wiring Harnesses for harness routeing.

4 If the fault is deemed to be intermittent, refer to Section 12P Wiring Diagr ams.

Rear Park Assist Page 12F1–29

Page 12F1–29

Diagnostic Table

Step Action Yes No

1 1 Backprobe connector A98 – X1 pin 15 with a test lamp (refer to

Note 1).

2 Switch the ignition on and select reverse gear.

Does the test lamp illuminate?

If the vehicle is fitted

with a towbar go to

Step 2.

If the vehicle is not

fitted with a towbar

go to Step 5

If the vehicle is fitted

with a towbar go to

Step 5.

If the vehicle is not

fitted with a towbar

go to Step 3

2 Is connector X906 disconnected (to modify the sensor detection range

for the towbar tongue)?

–

Disconnect

connector X906.

Go to Step 5

3 Backprobe connector X906 pin 1 with a test lamp (refer to Note 1).

Does the test lamp illuminate?

Repair or replace

circuit 796 (refer to

Note 2) Go to Step 4

4 Backprobe connector A98 – X1 pin 13 with a test lamp (refer to

Note 1).

Does the test lamp illuminate?

Repair or replace

circuit 24 (refer to

Note 2) Go to Step 5

5 Backprobe connector A98 – X1 pin 13 with a test lamp (refer to

Note 1).

Does the test lamp illuminate? Power supply is

serviceable Go to Step 6

6 Check Fuse 12 in the passenger compartment fuse and relay panel

assembly and Fuse 105 in the eng ine compartment fuse and relay

panel assembly.

Are the fuses serviceable? Go to Step 7

Replace fuse and

retest. If the fuse

blows again test for

a short to ground

(refer to Note 1)

7 Backprobe connector X129 – X35 pin 87 with a test lamp (refer to

Note 1).

Does the test lamp illuminate? Go to Step 8

Repair the ignition

control relay R21

control circuits or

replace the relay

(refer to Note 1)

8 Backprobe the following conn ector with a test lamp (refer to Note 1):

• Manual Transmission: S32 – X1 pin A.

• Automatic Transmission: S187 – X1 pin 11.

Does the test lamp illuminate? Go to Step 9

Repair or replace

circuits 239 or 3

(refer to Note 2)

9 Backprobe the following conn ector with a test lamp (refer to Note 1):

• Manual Transmission: S32 – X1 pin B.

• Automatic Transmission: S187 – X1 pin 9.

Does the test lamp illuminate?

Repair or replace

circuit 24 (refer to

Note 2)

Replace the back-

up lamp switch,

refer to the

appropriate

Transmission

Section

When all diagno sis an d repairs are completed, check the system for c orrect operation.

Rear Park Assist Page 12F1–30

Page 12F1–30

5 Speed Auto Transmission

NOTE

Prior to performing this test, ensure the ground

circuits function correctly and nothing is

connected into the trailer socket.

Introduction

This test is used by the technician to aid in the diagnosis of the rear park assist system power circuits.

Circuit Description

The rear object sensor control module is provided with power to connector A98 – X1 pins 13 and 15 when the ignition is

on and reverse gear is selected. W hen the module detects voltage at connector A98 – X1 pin 13 but not at pin 15

(because harness connector X906 is d isco nnected) the module modifies the detection area to allow for a towbar tongue.

Refer to the relevant wiring diagram and connector chart in this Section to aid in diagnosis of the rear park assist system

and associated components.

Test Description

The following numbers refer to the step numbers in the diagnostic table:

1 Tests if the towbar tongue modification circuit is serviceable.

2 Tests if the towbar tongue modification connector X906 is correctly set.

7 Tests if the ignition control relay is supplying battery voltage to circuits 3 and 239. If the ignition control relay R21

does not operate, battery voltage will not be available to the rear park assist system. In addition, there will be other

systems inoperable, including engine/powertrain management.

9 Tests if the reverse relay is supplying battery voltage to circuit 24. If the reverse relay R12 does not operate, battery

voltage will not be availa ble to the rear park assist system. In addition, the reverse lights will not operate.

13 Tests whether there is a fault in the CAN bus communic ation network or the Powertrain Interface Module (PIM), or

if the PIM is receiving the correct signal from the Transmission Control Module (TCM). If the PIM does not ground

circuit 38, there is a fault in either the PIM, the CAN bus communication network, the TCM, or the transmission

selector position switch inside the transmission.

Diagnostic Table Notes

1 For all wiring harness fault diagnoses, refer to Section 12P Wiring Diagrams.

2 For wiring harness repairs, refer to Section 12P Wiring Diagrams.

3 Refer to Section 12O Fuses, Relays and Wiring Harnesses for harness routeing.

4 If the fault is deemed to be intermittent, refer to Section 12P Wiring Diagr ams.

5 For information on using and connecting Tech 2 to the vehicle, refer to Section 0C Tech 2.

Diagnostic Table

Step Action Yes No

1 1 Backprobe connector A98 – X1 pin 15 with a test lamp (refer to

Note 1).

2 Switch the ignition on and select reverse gear.

Does the test lamp illuminate?

If the vehicle is fitted

with a towbar go to

Step 2.

If the vehicle is not

fitted with a towbar

go to Step 5

If the vehicle is fitted

with a towbar go to

Step 5.

If the vehicle is not

fitted with a towbar

go to Step 3

2 Is connector X906 disconnected (to modify the sensor detection range

for the towbar tongue)?

–

Disconnect

connector X906.

Go to Step 5

Rear Park Assist Page 12F1–31

Page 12F1–31

Step Action Yes No

3 Backprobe connector X906 pin 1 with a test lamp (refer to Note 1).

Does the test lamp illuminate?

Repair or replace

circuit 796 (refer to

Note 2) Go to Step 4

4 Backprobe connector A98 – X1 pin 13 with a test lamp (refer to

Note 1).

Does the test lamp illuminate?

Repair or replace

circuit 24 (refer to

Note 2) Go to Step 5

5 Backprobe connector A98 – X1 pin 13 with a test lamp (refer to

Note 1).

Does the test lamp illuminate? Power supply is

serviceable Go to Step 6

6 Check Fuse 12 in the passenger compartment fuse and relay panel

assembly and Fuse 105 in the eng ine compartment fuse and relay

panel assembly.

Are the fuses serviceable? Go to Step 7

Replace fuse and

retest. If the fuse

blows again test for

a short to ground

(refer to Note 1)

7 Backprobe connector X129 – X35 pin 87 with a test lamp (refer to

Note 1).

Does the test lamp illuminate?

Go to Step 8

Repair the ignition

control relay R21

control circuits or

replace the relay as

required (refer to

Note 1)

8 Backprobe connector X100 – X12 pin 3 with a test lamp (refer to

Note 1).

Does the test lamp illuminate? Go to Step 9

Repair or replace

circuits 239 or 3

(refer to Note 2)

9 Backprobe connector X100 – X12 pin 5 with a test lamp (refer to

Note 1).

Does the test lamp illuminate?

Repair or replace

circuit 24 (refer to

Note 2) Go to Step 10

10 Backprobe connector X100 – X12 pin 1 with a test lamp (refer to

Note 1).

Does the test lamp illuminate? Go to Step 11

Repair or replace

circuits 239 or 3

(refer to Note 2)

11 1 Remove the reverse relay R12.

2 Using a multimeter set to measure resistance, probe between

connector X100 – X12 pin 2 and a known ground (refer to

Note 1).

Does the multimeter indicate less than 5 Ω? Replace the reverse

relay R12 Go to Step 12

12 Using a multimeter set to measure resistance, probe between

connectors X100 – X12 pin 2 and A156 – X1 pin 12 (refer to Note 1).

Does the multimeter indicate less than 5 Ω? Go to Step 13

Repair or replace

circuit 38 (refer to

Note 2)

13 1 Connect Tech 2 to the DLC (refer to Note 5).

2 On Tech 2 select:

Body / PIM / Diagnostic Trouble Codes / Read DTC

Information.

Does any of the following DTCs set?

B1000, B1009, B1013, B1014, B1019, U1304, U2100, or U2106.

Refer to 6E1

Powertrain Interface

Module – V6 Go to Step 14

14 On Tech 2 select:

Transmission / Data Display and scroll to Shift Selector Position.

Does Tech 2 display Reverse when the transmission is placed in

Reverse?

Replace the PIM,

refer to 6E1

Powertrain Interface

Module – V6

Refer to 7E2

Automatic

Transmission –

5L40E – Electrical

Diagnosis

When all diagno sis an d repairs are completed, clear all DTCs and check the system for correct operation.

Rear Park Assist Page 12F1–32

Page 12F1–32

2.9 Self Diagnosis Circuit Test

NOTE

Prior to performing this test, ensure the ground

and power circuits function correctly and nothing

is connected into the trailer socket.

Introduction

This test is used by the technician to aid in the diagnosis of the rear park assist system self test circuit.

Circuit Description

When the rear object sensor control module detects low voltage at terminal X1-16 (because circuit 5213 is connected to

ground) the module enters self-test mode.

Refer to the relevant wiring diagram and connector chart in this Section to aid in diagnosis of the rear park assist system

and associated components.

Diagnostic Table Notes

1 For all wiring harness fault diagnoses, refer to Section 12P Wiring Diagrams.

2 For wiring harness repairs, refer to Section 12P Wiring Diagrams.

3 Refer to Section 12O Fuses, Relays and Wiring Harnesses for harness routeing.

4 If the fault is deemed to be intermittent, refer to Section 12P Wiring Diagr ams.

Diagnostic Table

Step Action Value(s) Yes No

1 1 Ground connector X156 – X1 pin 1, located on the

left-hand side of the rear compartment.

2 Switch the ignition on and select reverse gear.

Does the rear object sensor control module enter into

self test mode?

Refer to 2.6

Electrical

Self Test

Diagnosis System Serviceable Go to Step 2

2 Test the rear object sensor alarm assembly, refer to

2.10 No Audible Tone From Alarm.

Is the alarm serviceable? Go to Step 3

Replace the rear

object sensor alarm,

refer to 3.2 Rear

Object Sensor

Alarm Assembly

3 1 Disconnect connector A98 – X1 from the rear

object sensor control module.

2 Using a multimeter set to measure resistance,

probe between connector A 98 – X1 pin 16 and a

known ground (refer to Note 1).

Is the resistance less than the specified value ? 5 Ω

Replace the rear

object sensor

control module,

refer to 3.1 Rear

Object Sensor

Control Module

Assembly

Repair or replace

circuit 5213 (refer to

Note 2)

When all diagno sis an d repairs are completed, check the system for c orrect operation.

Rear Park Assist Page 12F1–33

Page 12F1–33

2.10 No Audible Tone From Alarm

NOTE

Prior to performing this test, ensure the ground

and power circuits function correctly and nothing

is connected into the trailer socket.

Introduction

This test is used by the technician to aid in the diagnosis of the rear park assist system alarm assembly and circuits.

Circuit Description

The rear object sensor alarm assembly is connected to the rear object sensor control module assembly through circuits

513 and 2380.

Refer to the relevant wiring diagram and connector chart in this Section to aid in diagnosis of the rear park assist system

and associated components.

Diagnostic Table Notes

1 For all wiring harness fault diagnoses, refer to Section 12P Wiring Diagrams.

2 For wiring harness repairs, refer to Section 12P Wiring Diagrams.

3 Refer to Section 12O Fuses, Relays and Wiring Harnesses for harness routeing.

4 If the fault is deemed to be intermittent, refer to Section 12P Wiring Diagr ams.

Diagnostic Table

Step Action Value(s) Yes No

1 1 Ground connector X156 – X1 pin 1, located on the

left-hand side of the rear compartment.

2 Switch the ignition on and select reverse gear.

Does an audible tone sound from the alarm?

The rear object

sensor alarm is

serviceable Go to Step 2

2 1 Disconnect connector H31 from the rear object

sensor alarm.

2 Using a multimeter set to measure resistance,

probe across the sensor alarm pins 1 and 2 (refer

to Note 1).

Does the multimeter indicate within the specified range? 95 – 105 Ω Go to Step 3

Replace the rear

object sensor alarm,

refer to 3.2 Rear

Object Sensor

Alarm Assembly

3 1 Disconnect connector A98 – X1 from the control

module.

2 Using a multimeter set to measure resistance,

probe between connectors A 98 – X1 pin 22 and

H31 – X1 pin 1 (refer to Note 1).

Does the multimeter indicate continuity? Go to Step 4

Repair or replace

circuit 513 (refer to

Note 2)

4 Using a multimeter set to measure resistance, probe

between connectors A98 – X1 pin 23 and H31 – X1 pin

2 (refer to Note 1).

Does the multimeter indicate continuity? Go to Step 5

Repair or replace

circuit 2380 (refer to

Note 2)

5 Using a multimeter set to measure resistance, probe

between connector A98 – X1 pin 22 and a known

ground (refer to Note 1).

Does the multimeter indicate contin uity?

Repair or replace

circuit 513 (refer to

Note 2) Go to Step 6

6 Using a multimeter set to measure resistance, probe

between connector A98 – X1 pin 23 and a known

ground (refer to Note 1).

Does the multimeter indicate contin uity?

Repair or replace

circuit 2380 (refer to

Note 2)

Replace the rear

object sensor

control module,

refer to 3.1 Rear

Object Sensor

Control Module

Assembly

When all diagno sis an d repairs are completed, check the system for c orrect operation.

Rear Park Assist Page 12F1–34

Page 12F1–34

2.11 Object Sensor Circuit Test

NOTE

Prior to performing this test, ensure the ground

and power circuits function correctly and nothing

is connected into the trailer socket.

Introduction

This test is used by the technician to aid in the diagnosis of the rear park assist system rear object sensor circuits.

Circuit Description

The rear park assist system rear object sensors share common power and ground circuits. Each rear object sensor has a

dedicated signal return circuit.

Refer to the relevant wiring diagram and connector chart in this Section to aid in diagnosis of the rear park assist system

and associated components.

Test Descriptions

The following numbers refer to the step numbers in the diagnostic table:

2 Checks if the rear object sensor control module is providing voltage to the rear object sensors.

3 Checks if the rear object sensor control module is providing a ground to the rear object sensors.

Diagnostic Table Notes

1 For all wiring harness fault diagnoses, refer to Section 12P Wiring Diagrams.

2 For wiring harness repairs, refer to Section 12P Wiring Diagrams.

3 Refer to Section 12O Fuses, Relays and Wiring Harnesses for harness routeing.

4 If the fault is deemed to be intermittent, refer to Section 12P Wiring Diagr ams.

Rear Park Assist Page 12F1–35

Page 12F1–35

Diagnostic Table

Step Action Value(s) Yes No

1 1 Disconnect connectors B133 from the rear object

sensors.

2 Disconnect connector A98 – X1 from the rear

object sensor control module.

3 Using a multimeter set to measure resistance,

probe between connector A 98 – X1 pin 5 and

each sensor connector B133 – X1 pin 3 (refer to

Note 1).

Does the multimeter indicate continuity? Go to Step 2

Repair or replace

circuit 2374 (refer to

Note 2)

2 Using a multimeter set to measure resistance, probe

between connector A98 – X1 pin 5 and a known ground

(refer to Note 1).

Does the multimeter indicate contin uity?

Repair or replace

circuit 2374 (refer to

Note 2) Go to Step 3

3 1 Switch the ignition on and select reverse gear.

2 Using a multimeter set to measure voltage, probe

between control module A 98 – X1 pin 5 and a

known ground (refer to Note 1).

Does the multimeter indicate within the specified range? 7.8 – 8.2 V Go to Step 4

Replace the rear

object sensor

control module,

refer to 3.1 Rear

Object Sensor

Control Module

Assembly

4 Using a multimeter set to measure resistance, probe

between control module A 98 – X1 pin 6 and a known

ground (refer to Note 1).

Does the multimeter indicate less than the specified

value? 5 Ω Go to Step 5

Replace the rear

object sensor

control module,

refer to 3.1 Rear

Object Sensor

Control Module

Assembly

5 Using a multimeter set to measure resistance, probe

between connector A98 – X1 pin 6 and e ach sensor

connector B133 – X1 pin 2 (refer to Note 1).

Does the multimeter indicate continuity? Go to Step 6

Repair or replace

circuit 2379 (refer to

Note 2)

6 Using a multimeter set to measure resistance, probe

between connector A98 – X1 pins 1, 2, 3, or 4 and the

relevant sensor connector B1 33 – X1 pin 1 (refer to

Note 1).

Does the multimeter indicate continuity in each test? Go to Step 7

Repair or replace

circuit(s) 2375,

2376, 2377, or 2378

as appropriate (refer

to Note 2)

7 Using a multimeter set to measure resistance, probe

between connector A98 – X1 pins 1, 2, 3, or 4 and a

known ground (refer to Note 1).

Does the multimeter indicate continuity in any test?

Repair or replace

circuit(s) 2375,

2376, 2377, or 2378

as appropriate (refer

to Note 2)

Replace the faulty

rear object sensor

as appropriate, refer

to 3.3 Rear Object

Sensor Assembly

and Wiring Harness

When all diagno sis an d repairs are completed, check the system for c orrect operation.

Rear Park Assist Page 12F1–36

Page 12F1–36

2.12 Rear Object Sensor Control Module Pin

Assignments

Pin Number Circuit Number Designation Wire Colour

1 2375 Sensor signal outer left Yellow

2 2376 Sensor signal middle left Orange

3 2377 Sensor signal middle right Dark green

4 2378 Sensor signal outer right Red

5 2374 Sensor voltage supply Dark blue

6 2379 Sensor ground Grey

12 650 Ground Black / Blue

13 24 Reverse input Light green

14 471 System disable White

15 796 Towbar offset Black

16 5213 Diagnostics Light blue

22 513 Alarm - Tan

23 2380 Alarm + Blue / White

Rear Park Assist Page 12F1–37

Page 12F1–37

3 Service Operations

3.1 Rear Object Sensor Control Module

Assembly

LT Section No –

Sedan

NOTE

The rear object sensor control module can be

removed with the rear object sensor alarm

assembly still attached.

Remove

1 Remove the rear window trim panel assembl y, refer to Section 1A8 Hea dlining and Interior Trim.

2 Disconnect the wiring connector (1) from the alarm

assembly (2).

3 Unlock the connector lock lever (3) and ope n the lever,

disconnecting the connector (4) from the rear object

sensor control module.

Figure 12F1 – 18

4 Remove the two retainers (1) attaching the c ontrol

module assembly (2) to the back panel uppe r.

5 Remove the control module assembly.

Figure 12F1 – 19

Reinstall

Reinstallation of the rear object sensor control module assembly is the reverse of the removal procedure .

Rear Park Assist Page 12F1–38

Page 12F1–38

Coupe

NOTE

The rear object sensor control module can be

removed with the rear object sensor alarm

assembly still attached.

Remove

1 Remove the right-hand quarter trim panel, refer to Section 1A8 Headlining and Interior Trim.

2 Disconnect the wiring connector (1) from the alarm

assembly (2).

3 Unlock the connector lock lever (3) and ope n the lever,

disconnecting the connector (4) from the rear object

sensor control module.

Figure 12F1 – 20

4 Carefully drill out the two pop-rivets (1) attaching the

control module (2) to the radio speaker br acket.

5 Remove the control module.

Figure 12F1 – 21

Reinstall

Reinstallation of the rear object sensor control module assembly is the reverse of the removal proced ure, noting the

following:

1 Use new pop-rivets.

Rear Park Assist Page 12F1–39

Page 12F1–39

AWD Wagon

Remove

1 Remove the right-hand rear seat bolster assembl y, refer to Section 1A7 Seat Assemblies .

2 Remove the two retainers (1) attaching the rear object

sensor control module (2).

Figure 12F1 – 22

3 Press the tab (1) to unlock the connector lock

lever (2). Open the connector lock lever and rotate to

disconnect the connector (3) from the rear object

sensor control module (4).

Figure 12F1 – 23

Reinstall

Reinstallation of the rear object sensor control module is the reverse of the removal procedure, noting the following:

1 Ensure that the connector lock lever is secured by the tab.

Rear Park Assist Page 12F1–40

Page 12F1–40

3.2 Rear Object Sensor Alarm Assembly

LT Section –

Sedan

NOTE

It is possible to remove the al arm with the modu le

either in place or removed.

Remove

1 Remove the rear window trim panel assembl y, refer to Section 1A8 Hea dlining and Interior Trim.

2 Disconnect the wiring connector (1) from the alarm assembly (2), refer to Figure 12F1 – 18.

3 Using a knife or paint scraper, carefully prise the alarm

assembly (1) from the control module (2), separating

the double-sided tape.

4 Remove the alarm assembly.

Figure 12F1 – 24

Reinstall

Reinstallation of the rear object sensor alarm assembly is the reverse of the removal procedure, noting the following:

1 If reusing the alarm, remove any remaining double-sided tape from the control module and alarm. Apply new tape

such as 3M 4428 or equivalent.

2 Peel off the adhesive backing paper a nd affix the alarm assembly on to the control module, ensuring it is correctly

positioned.

Rear Park Assist Page 12F1–41

Page 12F1–41

Coupe

NOTE

It is possible to remove the al arm with the modu le

either in place or removed.

Remove

1 Remove the right-hand quarter trim panel, refer to Section 1A8 Headlining and Interior Trim.

2 Disconnect the wiring connector (1) from the alarm assembly (2), refer to Figure 12F1 – 20.

3 Using a knife or paint scraper, carefully prise the alarm

assembly (1) from the control module (2), separating

the double-sided tape.

4 Remove the alarm assembly.

Figure 12F1 – 25

Reinstall

Reinstallation of the rear object sensor alarm assembly is the reverse of the removal procedure, noting the following:

1 If reusing the alarm, remove any remaining double-sided tape from the control module and alarm. Apply new tape

such as 3M 4428 or equivalent.

2 Peel off the adhesive backing paper a nd affix the alarm assembly on to the control module, ensuring it is correctly

positioned.

Rear Park Assist Page 12F1–42

Page 12F1–42

AWD Wagon

Remove

1 Lower the right-hand rear of the head lining to gain access to the rear object sensor alarm assembly, refer to

Section 1A8 Headlining and Interior Trim.

2 Remove the connector (1) from the rear objec t sensor

alarm assembly (2).

3 Using a knife or paint scraper, carefully prise the alarm

assembly from the roof cavity, separating the dou ble-

sided tape.

Figure 12F1 – 26

Reinstall

Reinstallation of the rear object sensor alarm assembly is the reverse of the removal procedure, noting the following:

1 If reusing the alarm assembly, remove any remaining double-sided tape from the vehicle a nd the alarm assembly,

ensuring that the mating surfaces are clean. Apply new tape such as 3M 4428 or equivalent to the flat side of the

alarm assembly.

2 Peel the adhesive backing from the double-sided tape and affix the rear object sensor alarm assembly to the

sheetmetal in the roof cavity, with the alarm assembly vents (3) pointing upwards, refer to Figure 12F1 – 26.

Rear Park Assist Page 12F1–43

Page 12F1–43

3.3 Rear Object Sensor Assembly and

Wiring Harness

LT Section –

Sedan

Remove

1 Remove the rear bumper fascia assembly, refer to Section 1D Bumper Bars.

Replacement rear object sensor assemblies

are supplied pre-painted in the vehicle's body

colour. Do not apply further paint to the rear

object sensor assemblies, as it will have a

detrimental effect on the operation of the rear

object sensor assemb lies.

2 Disconnect the wiring connector (1) from the rear object sens or assembly (2), refer to Figure 12F1 – 27.

3 Lift the top and bottom housing tabs (3) and remove the sensor assembly with the rear object sensor ring (4) from

the rear object sensor housing.

4 If required, remove the sensor ring from the sensor.

NOTE

For removal procedures for the rear object

sensor housing assembly, refer to

Section 1D Bumper Bars.

5 If required, remove the wiring harness (5) by prising the clips (6), four places from the bumper fascia rib.

Figure 12F1 – 27

Rear Park Assist Page 12F1–44

Page 12F1–44

Reinstall

Reinstallation of the rear object sensor assembly and wiring harness is the reverse of the removal procedure, noting the

following:

The rear object sensor ring prevents

vibrations from the rear object sensor

assembly being transferred to the

surrounding components. Incorrect fitment

will change the characteristics of the rear

object sensor assembly.

1 Ensure the rear object sensor ring is fitted correctly.

2 Ensure the sensors are correctly installed in the housing with the connector side facing the centreline of the

vehicle.

3 Attach the wiring harness to the upper side of the bumper fascia rib, aligning each clip at the notches.

Coupe

Remove

1 Remove the rear bumper fascia assembly, refer to Section 1D Bumper Bars.

Replacement rear object sensor assemblies

are supplied pre-painted in the vehicle's body

colour. Do not apply further paint to the rear

object sensor assemblies, as it will have a

detrimental effect on the operation of the rear

object sensor assemb lies.

2 Disconnect the wiring connector (1) from the rear object sens or assembly (2), refer to Figure 12F1 – 28.

3 Lift the top and bottom housing tabs (3) and remove the sensor assembly with the rear object sensor ring (4) from

the rear object sensor housing.

4 If required, remove the sensor ring from the sensor.

NOTE

For removal procedures for the rear

object sensor housing assembly, refer to

Section 1D Bumper Bars.

5 If required, remove the wiring harness (5) by prising the clips (6), four places from the bumper fascia rib.

Figure 12F1 – 28

Rear Park Assist Page 12F1–45

Page 12F1–45

Reinstall

Reinstallation of the rear object sensor assembly and wiring harness is the reverse of the removal procedure, noting the

following:

The rear object sensor ring prevents

vibrations from the rear object sensor

assembly being transferred to the

surrounding components. Incorrect fitment

will change the characteristics of the rear

object sensor assembly.

1 Ensure the rear object sensor ring is fitted correctly.

2 Ensure the sensors are correctly installed in the housing with the connector side facing the centreline of the

vehicle.

3 Attach the wiring harness to the upper side of the bumper fascia rib, aligning each clip at the notches.

AWD Wagon

Remove

1 Remove the rear bumper fascia assembly, refer to Section 1D Bumper Bars.

Replacement rear object sensor assemblies

are supplied pre-painted in the vehicle's body

colour. Do not apply further paint to the rear

object sensor assemblies, as it will have a

detrimental effect on the operation of the rear

object sensor assemb lies.

2 Disconnect the wiring connector (1) from the rear object sens or assembly (2), refer to Figure 12F1 – 29.

3 Lift the top and bottom housing tabs (3) and remove the sensor assembly with the rear object sensor ring (4) from

the rear object sensor housing.

3 If required, remove the sensor ring from the sensor.

NOTE

For removal procedures for the rear

object sensor housing assembly, refer to

Section 1D Bumper Bars.

5 If required, remove the wiring harness (5) by prising the clips (6), five places from the bumper fascia rib, and

unclipping the harness connector (7) from the bumper fascia.

Rear Park Assist Page 12F1–46

Page 12F1–46

Figure 12F1 – 29

Reinstall

Reinstallation of the rear object sensor assembly and wiring harness is the reverse of the removal procedure, noting the

following:

The rear object sensor ring prevents

vibrations from the rear object sensor

assembly being transferred to the

surrounding components. Incorrect fitment

will change the characteristics of the rear

object sensor assembly.

1 Ensure the rear object sensor ring is fitted correctly.

2 Ensure the sensors are correctly installed in the housing with the connector side facing the centreline of the

vehicle.

3 Attach the wiring harness to the upper side of the bumper fascia rib, aligning each clip at the notches.