Infiniti G35 (V35) Sedan. Manual - part 1312

 

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Infiniti G35 (V35) Sedan. Manual - part 1312

 

 

STC-138

< COMPONENT DIAGNOSIS >

[WITH 4WAS]

POWER STEERING SOLENOID VALVE

POWER STEERING SOLENOID VALVE

Description

INFOID:0000000000958910

• The power steering oil pressure in the gear housing assembly is controlled. 

Diagnosis Procedure

INFOID:0000000000958911

1.

CHECK POWER STEERING SOLENOID VALVE SIGNAL

 With CONSULT-III

1.

Start the engine.

2.

Check “POWER STR SOL” item on “DATA MONITOR” of 4WAS main control unit.

 Without CONSULT-III

1.

Start the engine.

2.

Check the voltage between 4WAS main control unit harness connector and the ground.

3.

Check that there is no malfunction in 4WAS main control unit harness connector or disconnection.

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Replace 4WAS main control unit. Refer to 

STC-178, "Exploded View"

.

2.

CHECK POWER STEERING SOLENOID VALVE CIRCUIT

1.

Turn the ignition switch OFF.

2.

Disconnect 4WAS main control unit harness connector.

3.

Disconnect the power steering solenoid valve harness connector.

4.

Check the continuity between 4WAS main control unit harness connector and power steering solenoid
valve harness connector.

5.

Check the continuity between power steering solenoid valve harness connector and the ground.

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Repair or replace the harnesses and connectors.

Monitor item

Condition

Display value

POWER STR SOL

Vehicle speed: 0 km/h (0 MPH)
(Engine is running)

Approx. 1.10 A

Vehicle speed: 100 km/h (62 MPH)

Approx. 0.42 A

4WAS main control unit

Data (Approx.)

Connector

Terminal

Condition

B54

36 – Ground

Vehicle speed: 0 km/h (0 MPH)
(Engine is running)

4.4 – 6.6 V

Vehicle speed: 100 km/h (62 
MPH)

2.4 – 3.6 V

4WAS main control unit

Power steering solenoid 

valve

Continuity

Connector

Terminal

Connector

Terminal

M54

36

F45

1

Existed

Power steering solenoid valve

Continuity

Connector

Terminal

F45

2 – Ground

Existed

POWER STEERING SOLENOID VALVE

STC-139

< COMPONENT DIAGNOSIS >

[WITH 4WAS]

C

D

E

F

H

I

J

K

L

M

A

B

STC

N

O

P

3.

CHECK POWER STEERING SOLENOID VALVE

1.

Check the resistance between power steering solenoid valve connector.

2.

Check for click (power steering solenoid valve activation sound) when applying approximately 12 V
between the power steering solenoid valve connector.

CAUTION:

• Never make the terminals short.
• Assign the positive terminal to No. 1 terminal, and the negative terminal to No. 2 terminal. Con-

nect the fuse between the terminals when applying the voltage.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Repair the steering gear. Refer to 

ST-26, "2WD : Exploded View"

.

Component Inspection

INFOID:0000000000958912

1.

POWER STEERING SOLENOID VALVE INSPECTION

1.

Turn the ignition switch OFF.

2.

Disconnect the power steering solenoid valve harness connector.

3.

Check the resistance between power steering solenoid valve connector.

4.

Check for click (power steering solenoid valve activation sound) when applying approximately 12 V
between the power steering solenoid valve connector.

CAUTION:

• Never make the terminals short.
• Assign the positive terminal to No. 1 terminal, and the negative terminal to No. 2 terminal. Con-

nect the fuse between the terminals when applying the voltage.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Repair the steering gear.

ST-26, "2WD : Exploded View"

.

Power steering solenoid valve

Resistance (Approx.)

Connector

Terminal

F45

1 – 2

4 – 6 

Power steering solenoid valve

Resistance (Approx.)

Connector

Terminal

F45

1 – 2

4 – 6 

STC-140

< COMPONENT DIAGNOSIS >

[WITH 4WAS]

4WAS WARNING LAMP

4WAS WARNING LAMP

Description

INFOID:0000000000958913

• Turn 4WAS warning lamp ON when ignition switch turns ON from OFF. Then, turn 4WAS warning lamp OFF

after the engine is started.

• The check of 4WAS system is performed.
• 4WAS system stops (error) when turning 4WAS warning lamp ON.

Diagnosis Procedure

INFOID:0000000000958914

1.

PERFORM UNIFIED METER AND A/C AMP. SELF-DIAGNOSIS 

 With CONSULT-III

 Perform the self-diagnosis of the unified meter and A/C amp.

Is any error system detected?

YES

>> Check the error system.

NO

>> GO TO 2.

2.

PERFORM SELF-DIAGNOSIS (4WAS MAIN CONTROL UNIT)

 With CONSULT-III

Perform 4WAS main control unit self-diagnosis.

Is DTC “U1000” or “U1010” detected?

YES

>> Check the error system.

NO

>> GO TO 3.

3.

PERFORM COMBINATION METER CIRCUIT

1.

Turn the ignition switch OFF.

2.

Disconnect the unified meter and A/C amp. harness connector.

3.

Disconnect the combination meter harness connector.

4.

Check the continuity between the unified meter and A/C amp. harness connector and the combination
meter harness connector terminal.

Is the inspection result normal?

YES

>> GO TO 4.

NO

>> Repair or replace the harnesses and connectors.

4.

CHECK 4WAS WARNING LAMP SIGNAL

 With CONSULT-III

1.

Connect the unified meter and A/C amp. harness connector.

2.

Connect the combination meter harness connector.

3.

Disconnect 4WAS front control unit harness connector.

4.

Turn the ignition switch ON.

CAUTION:

Never start the engine.

5.

Check “WARNING LAMP” item on DATA MONITOR of 4WAS main control unit.

Does the item on “DATA MONITOR” indicate “On”?

YES

>> GO TO 5.

NO

>> Replace 4WAS main control unit. Refer to 

STC-178, "Exploded View"

.

5.

CHECK COMBINATION METER

 With CONSULT-III

Unified meter and A/C amp.

Combination meter

Continuity

Connector

Terminal

Connector

Terminal

M66

7

M53

3

Existed

M66

27

M53

2

4WAS WARNING LAMP

STC-141

< COMPONENT DIAGNOSIS >

[WITH 4WAS]

C

D

E

F

H

I

J

K

L

M

A

B

STC

N

O

P

Perform the trouble diagnosis of the combination meter. Refer to 

MWI-49, "COMBINATION METER : Diagno-

sis Procedure"

.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Replace the combination meter. Refer to 

MWI-156, "Exploded View"

.

Special Repair Requirement

INFOID:0000000000958915

BEFORE REPLACING 4WAS MAIN CONTROL UNIT

• Record the self-diagnosis results (history).

CAUTION:

• Replace it without erasing the memory (history) of self-diagnosis results when replacing 4WAS

main control unit after diagnosis.

• 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).

 

 

 

 

 

 

 

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