Infiniti Q45. Manual - part 893

 

  Index      Infiniti     Infiniti Q45 - service repair manual 2006 year

 

Search            copyright infringement  

 

 

 

 

 

 

 



 

 

Content   ..  891  892  893  894   ..

 

 

Infiniti Q45. Manual - part 893

 

 

TROUBLE DIAGNOSIS FOR SYSTEM

STC-75

[WITH REAR ACTIVE STEER]

C

D

E

F

H

I

J

K

L

M

A

B

STC

DTC U1000 CAN COMM

NGS0008O

Check the following if “CAN COMM [U1000]” is detected in self-diagnosis results with CONSULT-II.

DIAGNOSTIC PROCEDURE

1. 

CHECK CAN COMMUNICATION CIRCUIT

 With CONSULT-II

1.

Turn ignition switch “ON” and start engine.

2.

Select “SELF-DIAG RESULTS” mode for “RAS/HICAS” within CONSULT-II.

3.

Perform the self-diagnosis.

Is the “CAN COMM CIRCUIT [U1000]” displayed?

YES

>> Print out CONSULT-II screen and go to 

LAN-17, "Pre-

cautions When Using CONSULT-II"

 .

NO

>> INSPECTION END

DTC U1010 CONTROL UNIT (CAN)

NGS0008P

Check the following if “CONTROL UNIT (CAN) [U1010]” is detected in self-diagnosis results with CON-
SULT-II.

DIAGNOSTIC PROCEDURE

1. 

CHECK CAN COMMUNICATION CIRCUIT

 With CONSULT-II

1.

Turn ignition switch “ON” and start engine.

2.

Select “SELF-DIAG RESULTS” mode for “RAS/HICAS” within CONSULT-II.

3.

Perform the self-diagnosis.

Is the “CAN COMM CIRCUIT [U1010]” displayed?

YES

>> GO TO 2.

NO

>> INSPECTION END

2. 

PERFORM SELF-DIAGNOSIS

 With CONSULT-II

1.

Turn ignition switch “ON”. (Do not start engine.)

2.

Select “SELF-DIAG RESULTS” mode for “RAS/HICAS” with CONSULT-II.

3.

Touch “ERASE”.

4.

Turn ignition switch “OFF” and wait at least 10 seconds.

5.

Perform the self-diagnosis, after driving a vehicle for a while.

Is the “U1010 CONTROL UNIT (CAN)” displayed?

YES

>> Replace RAS control unit. Refer to 

STC-90, "Removal and Installation"

 .

NO

>> INSPECTION END

SDIA1850E

SGIA1488E

STC-76

[WITH REAR ACTIVE STEER]

TROUBLE DIAGNOSIS FOR SYSTEM

RAS Actuator Assembly

NGS0008X

DIAGNOSTIC PROCEDURE

1. 

CHECK (1): RAS ACTUATOR ASSEMBLY STROKE

Perform CONSULT-II “ACTIVE TEST”, and then check the RAS
actuator assembly stroke “S” when turning the steering wheel clock-
wise or counterclockwise by 180

°

 or more. Refer to 

STC-52, "Opera-

tion Procedure"

 .

OK or NG

OK

>> GO TO 2.

NG

>> GO TO 3.

2. 

CHECK (2): RAS ACTUATOR ASSEMBLY STROKE

Perform CONSULT-II “ACTIVE TEST“. When turning the steering
wheel in neutral position “N”, the rear wheel turns clockwise/counter-
clockwise periodically. At that time, check RAS actuator assembly
stroke “S”. Refer to 

STC-52, "Operation Procedure"

 .

OK or NG

OK

>> INSPECTION END

NG

>> GO TO 3.

3. 

CHECK RAS MOTOR

Check RAS motor. Refer to 

STC-82, "RAS MOTOR"

 .

OK or NG

OK

>> GO TO 4.

NG

>> Check the RAS actuator assembly stroke again after replacing.

4. 

CHECK REAR WHEEL STEERING ANGLE SENSOR

Check rear wheel steering angle sensor. Refer to 

STC-83, "REAR WHEEL STEERING ANGLE SENSOR"

 .

OK or NG

OK

>> GO TO 5.

NG

>> Rear wheel steering angle sensor malfunction. Check the stroke again after replacing.

5. 

CHECK (1): RAS ACTUATOR ASSEMBLY STROKE AGAIN

Check RAS actuator assembly stroke again after checking rear suspension components.

OK or NG

OK

>> GO TO 6.

NG

>> RAS actuator assembly is malfunctioning. Replace RAS actuator assembly.

RAS actuator stroke “S”

: 2.8 – 3.0 mm (0.110 – 0.118 in)

SGIA1601E

RAS actuator stroke “S”

: 2.3 – 2.5 mm (0.091 – 0.098 in)

SGIA1601E

TROUBLE DIAGNOSIS FOR SYSTEM

STC-77

[WITH REAR ACTIVE STEER]

C

D

E

F

H

I

J

K

L

M

A

B

STC

6. 

CHECK RAS CONTROL UNIT

Check RAS control unit input/output signal. Refer to 

STC-47, "RAS Control Unit Input/Output Signal Refer-

ence Values"

 .

OK or NG

OK

>> GO TO 7.

NG

>> Check RAS control unit pin terminals for damage or loose connection with harness connector. If

any items are damaged, repair or replace damaged parts.

7. 

CHECK (2): RAS ACTUATOR ASSEMBLY STROKE AGAIN

Check RAS actuator assembly stroke again.

OK or NG

OK

>> INSPECTION END

NG

>> Replace RAS control unit. Refer to 

STC-90, "Removal and Installation"

 .

Power Steering Solenoid Valve

NGS0006V

CONSULT-II REFERENCE VALUE IN DATA MONITOR MODE

Data are reference value.

RAS CONTROL UNIT TERMINALS AND REFERENCE VALUE

Data are reference value and are measured between each terminal and ground.

CAUTION:

When using a circuit tester to measure voltage for inspection, be sure not to extend forcibly any connector terminal.

Monitored item

Content

Condition

Display value

POWER STR SOL [A]

Monitored value of current at 
power steering solenoid 
valve

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

Approx. 1.10 A

Vehicle speed: 100 km/h (62 MPH)

Approx. 0.54 A

Terminal

Wire 

color

Item

Condition

Data (Approx.)

36

LG

Power steering solenoid valve

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

STC-78

[WITH REAR ACTIVE STEER]

TROUBLE DIAGNOSIS FOR SYSTEM

DIAGNOSTIC PROCEDURE

1. 

CHECK POWER STEERING SOLENOID VALVE SIGNAL

 With CONSULT-II

1.

Start engine.

2.

Select “DATA MONITOR” mode for “RAS/HICAS” with CONSULT-II.

3.

Read out the value of “POWER STR SOL”.

 Without CONSULT-II

1.

Start engine.

2.

Check signal between RAS control unit harness connector (A)
terminal and ground.

OK or NG

OK >> GO 

TO 

5.

NG

>> GO TO 2.

2. 

CHECK POWER STEERING SOLENOID VALVE GROUND CIRCUIT

1.

Turn ignition switch “OFF”.

2.

Disconnect power steering solenoid valve harness connector.

3.

Check continuity between power steering solenoid valve har-
ness connector (A) F3 terminal 2 and ground.

Also check harness for short to power.

 OK or NG

 OK 

>> GO TO 3.

 NG

>> Repair or replace damaged parts.

Condition

Display value

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

Approx. 1.10 A

Vehicle speed: 100 km/h (62 MPH)

Approx. 0.54 A

SGIA1405E

Connector

Terminal

Condition

Data 

(Approx.)

B39

 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

SGIA1489E

Continuity should exist.

SGIA1411E

 

 

 

 

 

 

 

Content   ..  891  892  893  894   ..