Infiniti G35 (V35) Sedan. Manual - part 1284

STC-26

< BASIC INSPECTION >

[WITH 4WAS]

DIAGNOSIS AND REPAIR WORKFLOW

5.

Check the error system detected from the self-diagnosis.

CAUTION:

Check the “DATA MONITOR” value of each DTC detected with the self-diagnosis function.

6.

Erase 4WAS main control unit self-diagnosis memory.

CAUTION:

• Never erase the self-diagnosis result (record) history when replacing 4WAS main control unit.
• Erase the memory of the self-diagnosis results (record) after printing out or recording all the val-

ues of “DATA MONITOR” when erasing the memory of the self-diagnosis results (record).

>> GO TO 6.

6.

CHECK TERMINAL

Check each harness connector pin terminal for disconnection.

>> GO TO 7.

7.

CHECK SYMPTOM REPRODUCTION

 With CONSULT-III

Perform DTC reproduction procedure for the error system.

Is any error system detected?

YES

>> GO TO 2.

NO

>> GO TO 8.

8.

PERFORM SYMPTOM DIAGNOSIS

 With CONSULT-III

Perform the symptom diagnosis for each system.

Is any error detected?

YES

>> GO TO 2.

NO

>> GO TO 9.

9.

FINAL CHECK

 With CONSULT-III

Check input/output signal standard of 4WAS front control unit and 4WAS main control unit.
Is the input/output the standard value?

YES

>> INSPECTION END

NO

>> GO TO 2.

INSPECTION AND ADJUSTMENT

STC-27

< BASIC INSPECTION >

[WITH 4WAS]

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INSPECTION AND ADJUSTMENT

ADDITIONAL SERVICE WHEN REPLACING CONTROL UNIT

ADDITIONAL SERVICE WHEN REPLACING CONTROL UNIT : Description

INFOID:0000000000958728

• Perform 4WAS front actuator adjustment after replacing 4WAS front control unit.
• Perform 4WAS front actuator adjustment when performing any service below.
- 4WAS front actuator and the steering components (included adjusting wheel alignment) removal. Refer to

STC-27, "4WAS FRONT ACTUATOR NEUTRAL POSITION ADJUSTMENT : Special Repair Requirement
(Pattern 1)"

.

CAUTION:

• Check the following items before the removal.
- Turn 4WAS warning lamp OFF after the engine starts.
- Perform the self-diagnosis of each control unit of 4WAS system (4WAS front control unit and

4WAS main control unit). Check that 4WAS system controls properly.

- 4WAS front actuator and the steering components (included adjusting wheel alignment) installation. Refer to

STC-28, "4WAS FRONT ACTUATOR NEUTRAL POSITION ADJUSTMENT : Special Repair Requirement
(Pattern 2)"

.

- 4WAS front control unit and the steering angle sensor replacement. Refer to 

STC-28, "4WAS FRONT

ACTUATOR NEUTRAL POSITION ADJUSTMENT : Special Repair Requirement (Pattern 3)"

.

- When driving while misaligning the steering wheel position (center) after installing 4WAS front actuator.

Refer to 

STC-30, "4WAS FRONT ACTUATOR NEUTRAL POSITION ADJUSTMENT : Special Repair

Requirement (Pattern 4)"

.

4WAS FRONT ACTUATOR NEUTRAL POSITION ADJUSTMENT

4WAS FRONT ACTUATOR NEUTRAL POSITION ADJUSTMENT : Description

INFOID:0000000000958729

• Perform 4WAS front actuator adjustment when performing any service below.
- 4WAS front actuator and the steering components (included adjusting wheel alignment) removal. Refer to

STC-27, "4WAS FRONT ACTUATOR NEUTRAL POSITION ADJUSTMENT : Special Repair Requirement
(Pattern 1)"

.

CAUTION:

• Check the following items before the removal.
- Turn 4WAS warning lamp OFF after the engine starts.
- Perform the self-diagnosis of each control unit of 4WAS system (4WAS front control unit and

4WAS main control unit). Check that 4WAS system controls properly.

- 4WAS front actuator and the steering components (included adjusting wheel alignment) installation. Refer to

STC-28, "4WAS FRONT ACTUATOR NEUTRAL POSITION ADJUSTMENT : Special Repair Requirement
(Pattern 2)"

.

- 4WAS front control unit and the steering angle sensor replacement. Refer to 

STC-28, "4WAS FRONT

ACTUATOR NEUTRAL POSITION ADJUSTMENT : Special Repair Requirement (Pattern 3)"

.

- When driving while misaligning the steering wheel position (center) after installing 4WAS front actuator.

Refer to 

STC-30, "4WAS FRONT ACTUATOR NEUTRAL POSITION ADJUSTMENT : Special Repair

Requirement (Pattern 4)"

.

4WAS FRONT ACTUATOR NEUTRAL POSITION ADJUSTMENT : Special Repair 
Requirement (Pattern 1)

INFOID:0000000000958730

1.

4WAS FRONT ACTUATOR ADJUSTMENT

 With CONSULT-III

1.

Start the engine.

CAUTION:

Stop the vehicle.

2.

Turn the steering wheel to adjust “ACTR ROTA ANG” of the 4WAS front control unit “DATA MONITOR” so
that it falls within the range shown below:

3.

Turn the ignition switch OFF.

ACTR ROTA ANG

: 

−

3.5 – 3.5 deg

STC-28

< BASIC INSPECTION >

[WITH 4WAS]

INSPECTION AND ADJUSTMENT

CAUTION:

Never touch the steering wheel after turning ignition switch OFF.

>> END

4WAS FRONT ACTUATOR NEUTRAL POSITION ADJUSTMENT : Special Repair 
Requirement (Pattern 2)

INFOID:0000000000958731

1.

4WAS FRONT ACTUATOR ADJUSTMENT

 With CONSULT-III

1.

Turn the ignition switch ON.

CAUTION:

Never start the engine.

2.

Steer to 30

°

 leftward slowly. Steer to 30

°

 rightward and return the steering wheel to the straight-ahead

position.

3.

Perform the steering angle sensor neutral position adjustment. Refer to 

BRC-8, "ADJUSTMENT OF

STEERING ANGLE SENSOR NEUTRAL POSITION : Special Repair Requirement"

.

4.

Turn the ignition switch OFF.

>> GO TO 2.

2.

PERFORM ACTIVE TEST (SLOW MODE)

 With CONSULT-III

1.

Start the engine.

CAUTION:

Stop the vehicle.

2.

Select “SLOW MODE” item on “ACTIVE TEST” of 4WAS front control unit.

3.

Perform “MODE START” of “ACTIVE TEST”.

4.

Steer the steering wheel leftward slowly until the turning stops.

5.

Steer the steering wheel rightward slowly until the turning stops.

Is “OK” indicated on both right and left on “SLOW MODE”?

YES

>> GO TO 3.

NO

>> Refer to 

STC-30, "4WAS FRONT ACTUATOR NEUTRAL POSITION ADJUSTMENT : Special

Repair Requirement (Pattern 4)"

.

3.

PERFORM SELF-DIAGNOSIS (4WAS FRONT CONTROL UNIT)

 With CONSULT-III

Perform 4WAS front control unit self-diagnosis.
NOTE:
Detect DTC “C1671” when replacing 4WAS front control unit or performing 4WAS front actuator adjustment.
DTC “C1671” becomes past record if 4WAS front actuator adjustment is completed normally.

Is any error system detected?

YES

>> Check the error system.

NO

>> GO TO 4.

4.

ERROR HISTORY ERASE

 With CONSULT-III

Erase the memory of 4WAS main control unit and 4WAS main control unit self-diagnosis result.

>> END

4WAS FRONT ACTUATOR NEUTRAL POSITION ADJUSTMENT : Special Repair 
Requirement (Pattern 3)

INFOID:0000000000958732

1.

PERFORM ACTIVE TEST (LOCK OPERATION)

 With CONSULT-III

INSPECTION AND ADJUSTMENT

STC-29

< BASIC INSPECTION >

[WITH 4WAS]

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1.

Stop the vehicle to the straight-ahead position.

2.

Turn the ignition switch ON.

CAUTION:

Never start the engine.

3.

Select “LOCK OPERATION” item on “ACTIVE TEST” of 4WAS front control unit.

4.

Perform “RELEASE” of “ACTIVE TEST”.

CAUTION:

• Turn the steering wheel 90

°

. Check that the front wheels do not move.

• Never turn the steering wheel during “RELEASE”.

5.

Turn the steering wheel to adjust “

4WAS STR

 ANG” of the 4WAS front control unit “DATA MONITOR” so

that it falls within the range shown below:

6.

Perform “LOCK” item on “ACTIVE TEST” of 4WAS front control unit.

7.

Steer to 30

°

 leftward slowly. Steer to 30

°

 rightward and return the steering wheel to the straight-ahead

position.

8.

Finish 4WAS front control unit active test.

>> GO TO 2.

2.

STEERING ANGLE SENSOR NEUTRAL POSITION ADJUSTMENT

1.

Perform the steering angle sensor neutral position adjustment. Refer to 

BRC-8, "ADJUSTMENT OF

STEERING ANGLE SENSOR NEUTRAL POSITION : Special Repair Requirement"

.

2.

Turn the ignition switch OFF.

>> GO TO 3.

3.

RETURN TO 4WAS FRONT ACTUATOR INITIAL POSITON

1.

Start the engine.

CAUTION:

Stop the vehicle.

2.

Steer 90

°

 leftward slowly. Then steer 90

°

 rightward.

3.

Steer 90

°

 leftward slowly again. Then steer 90

°

 rightward. Return the steering wheel to the straight-ahead

position.

4.

Stop the vehicle in the straight-ahead position after driving for a period of time. (When engine is running)

>> GO TO 4.

4.

CHECK 4WAS FRONT ACTUATOR INSPECTION

 With CONSULT-III

1.

Check “

4WAS 

STR ANG” item on “DATA MONITOR” of 4WAS front control unit.

CAUTION:

Never touch the steering wheel during the service.

2.

Turn the ignition switch OFF.

Is the inspection result normal?

YES

>> GO TO 5.

NO

>> GO TO 1.

5.

PERFORM ACTIVE TEST (SLOW MODE)

 With CONSULT-III

1.

Start the engine.

CAUTION:

Stop the vehicle.

2.

Select “SLOW MODE” item on “ACTIVE TEST” of 4WAS front control unit.

3.

Perform “MODE START” of “ACTIVE TEST”.

4.

Steer the steering wheel leftward slowly until the turning stops.

4WAS STR

 ANG

: 

−

3.5 – 3.5 deg

4WAS 

STR ANG

: 

−

3.5 – 3.5 deg