Infiniti G35 (V35). Manual - part 783

STC-36

[RAS]

TROUBLE DIAGNOSIS

3. 

CHECK (2): REAR WHEEL STEERING ANGLE SENSOR POWER SUPPLY AND GROUND CIRCUIT

1.

Turn ignition switch OFF, disconnect rear wheel steering angle sensor harness connector and RAS control
unit harness connector.

2.

Check continuity between the following terminals.

–

Rear wheel steering angle sensor harness connector B133 ter-
minal 1 and RAS control unit harness connector B136 terminal
5.

–

Rear wheel steering angle sensor harness connector B133 ter-
minal 3 and RAS control unit harness connector B136 terminal
15.

OK or NG

OK

>> RAS control unit malfunction. Replace RAS control unit.

NG

>> Harness between rear wheel steering angle sensor and RAS control unit open or shorted. Repair

or replace harness.

4. 

CHECK REAR WHEEL STEERING ANGLE SENSOR OUTPUT SIGNAL

1.

Connect rear wheel steering angle sensor harness connector B133.

2.

Check voltage RAS control unit harness connector B136 when
starting the engine and turning the steering wheel from neutral
position clockwise/counterclockwise by 180

°

.

CAUTION:

There is approximately 1 V or more difference between main output and sub output at straight-ahead position, inspection
results are “NG”.

OK or NG

OK

>> RAS control unit malfunction. Replace RAS control unit.

NG

>> GO TO 5.

Continuity should exist.

SGIA1733E

SGIA1275E

Steering condition

Rear wheel steering angle sensor

Rear main output

Terminal 4 (+) - 15 (-)

Rear sub output

Terminal 7 (+) - 15 (-)

Straight-ahead (neutral position)

Approx. 2.4 V

Approx. 2.4 V

Turn wheel to the right by 180

°

Approx. 4.4 V

Approx. 4.4 V

Turn wheel to the left by 180

°

Approx. 0.4 V

Approx. 0.4 V

TROUBLE DIAGNOSIS

STC-37

[RAS]

C

D

E

F

H

I

J

K

L

M

A

B

STC

5. 

CHECK REAR WHEEL STEERING ANGLE SENSOR OUTPUT SIGNAL CIRCUIT

1.

Turn ignition switch OFF, disconnect rear wheel steering angle sensor harness connector and RAS control
unit harness connector.

2.

Check continuity between the following terminals.

–

Rear wheel steering angle sensor harness connector B133 ter-
minal 2 and RAS control unit harness connector B136 terminal
7.

–

Rear wheel steering angle sensor harness connector B133 ter-
minal 4 and RAS control unit harness connector B136 terminal
4.

OK or NG

OK

>> Rear wheel steering angle sensor malfunction. Replace

rear wheel steering angle sensor.

NG

>> Harness between rear wheel steering angle sensor and RAS control unit open or shorted. Repair

or replace harness.

Inspection 7: VDC Malfunction

NGS0009V

1. 

CHECK RAS CONTROL UNIT CONNECTOR

1.

Turn ignition switch OFF, disconnect RAS control unit harness connector and rear wheel steering angle
sensor harness connector, and check terminal for deformation, disconnection, looseness, etc.

2.

Reconnect harness connector securely, and perform self-diagnosis.

With CONSULT-II

Without CONSULT-II

Is above displayed on self-diagnosis display?

YES

>> GO TO 2.

NO

>> Connector terminal connection is loose, damaged, open, or shorted. Repair or replace the termi-

nal.

2. 

CHECK SELF-DIAGNOSTIC RESULTS

Perform VDC self-diagnosis. Refer to 

BRC-25, "Self-Diagnosis"

 .

OK or NG

OK

>> RAS control unit malfunction. Replace RAS control unit.

NG

>> Repair or replace indicated part. After that, perform RAS self-diagnosis again to make sure that

there is no malfunction.

Inspection 8: Engine Speed Signal Malfunction

NGS0009W

1. 

CHECK SPEEDOMETER

Start the engine, and then check the combination meter (tachometer) operation.

Does it operate normally?

YES

>> GO TO 2.

NO

>> Combination meter. Refer to 

DI-4, "COMBINATION METERS"

 .

Continuity should exist.

SGIA1734E

Self-diagnosis results

VDC

DTC (warning lamp blinks)

26

STC-38

[RAS]

TROUBLE DIAGNOSIS

2. 

CHECK RAS CONTROL UNIT CONNECTOR

1.

Turn ignition switch OFF, disconnect RAS control unit harness connector, and check terminal for deforma-
tion, disconnection, looseness, etc.

2.

Reconnect harness connector securely, and perform self-diagnosis.

With CONSULT-II

Without CONSULT-II

Is above displayed on self-diagnosis display?

YES

>> RAS control unit malfunction. Replace RAS control unit.

NO

>> Connector terminal connection is loose, damaged, open, or shorted. Repair or replace the termi-

nal.

Inspection 9: CAN Communication System Malfunction

NGS0009X

1. 

CHECK RAS CONTROL UNIT CONNECTOR

1.

Turn ignition switch OFF, disconnect RAS control unit harness connector and rear wheel steering angle
sensor harness connector, and check terminal for deformation, disconnection, looseness, etc.

2.

Reconnect harness connector securely, and perform CONSULT-II self-diagnosis.

Is above displayed on self-diagnosis display?

YES

>>

●

If “CAN COMM CIRCUIT [U1000]” is displayed, print out self–diagnosis. And then, GO TO

LAN-47, "CAN System Specification Chart"

 .

●

Replace RAS control unit if “CONTROL UNIT (CAN) [U1010]” is displayed.

NO

>> Connector terminal connection is loose, damaged, open, or shorted. Repair or replace the termi-

nal.

Self-diagnostic results

MOTOR OUTPUT

DTC (warning lamp blinks)

27

Self-diagnostic results

CAN COMM CIRCUIT [U1000]

CONTROL UNIT (CAN) [U1010]

TROUBLE DIAGNOSIS

STC-39

[RAS]

C

D

E

F

H

I

J

K

L

M

A

B

STC

Inspection 10: Stop Lamp Switch Harness

NGS0009Y

1. 

CHECK STOP LAMP SWITCH SIGNAL

With CONSULT-II

Select “STOP LAMP SW” on DATA MONITOR, and then check the stop lamp switch.

Without CONSULT-II

1.

Turn ignition switch OFF, disconnect RAS control unit harness connector.

2.

Operate brake pedal, and then check voltage between RAS con-
trol unit harness connector and ground.

OK or NG

OK

>> Stop lamp switch harness is normal.

NG

>> Stop lamp switch harness malfunction. Repair circuit.

Inspection 11: RAS Warning Lamp Harness

NGS0009Z

1. 

CHECK RAS WARNING LAMP SIGNAL

Turn ignition switch ON, and then check voltage between RAS con-
trol unit harness connector and ground.

OK or NG

OK

>> Perform self-diagnosis. Refer to 

STC-23, "Self-Diagno-

sis"

 .

NG

>> GO TO 2.

Measuring condition

Data monitor

Brake pedal depressed

ON

Brake pedal released

OFF

Connector

Terminal

Condition

Voltage

B136

22 

−

 Ground

Brake pedal depressed

Battery voltage

(Approx. 12 V)

Brake pedal released

Approx. 0 V

SGIA1277E

Connector

Terminal

Voltage

B136

26 

−

 Ground

Warning lamp OFF

: Approx. 2.8 V or more

Warning lamp ON

: Approx. 1.4 V or less

SGIA1278E