2006 INFINITI M35 Factory Service Manual

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Page 5457 of 5621

INFINITI M35 2006 Factory Service Manual STC-42
[RAS]
TROUBLE DIAGNOSIS
Revision: 2006 January2006 M35/M45
5. CHECK REAR WHEEL STEERING ANGLE SENSOR OUTPUT SIGNAL CIRCUIT
1. Turn ignition switch OFF, disconnect rear wheel steering angle sens

Page 5458 of 5621

INFINITI M35 2006 Factory Service Manual TROUBLE DIAGNOSIS
STC-43
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Revision: 2006 January2006 M35/M45
Inspection 8: Engine Speed Signal MalfunctionNGS000EX
1. CHECK SPEEDOMETER
Start the engine, and then check

Page 5459 of 5621

INFINITI M35 2006 Factory Service Manual STC-44
[RAS]
TROUBLE DIAGNOSIS
Revision: 2006 January2006 M35/M45
Inspection 10: Stop Lamp Switch HarnessNGS000EZ
1. CHECK STOP LAMP SWITCH SIGNAL
With CONSULT-II
Select “STOP LAMP SW” on DATA MON

Page 5460 of 5621

INFINITI M35 2006 Factory Service Manual TROUBLE DIAGNOSIS
STC-45
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Revision: 2006 January2006 M35/M45
2. CHECK RAS WARNING LAMP HARNESS
1. Turn ignition switch OFF, disconnect RAS control unit harness

Page 5461 of 5621

INFINITI M35 2006 Factory Service Manual STC-46
[RAS]
TROUBLE DIAGNOSIS
Revision: 2006 January2006 M35/M45
Diagnosis Chart by Symptom 1NGS000F1
1. CHECK SELF-DIAGNOSTIC RESULTS
Perform RAS self-diagnosis.
With CONSULT-II: STC-28, "SELF-D

STC-46
[RAS]
TROUBLE DIAGNOSIS
Revision: 2006 January2006 M35/M45
Diagnosis Chart by Symptom 1NGS000F1
1. CHECK SELF-DIAGNOSTIC RESULTS
Perform RAS self-diagnosis.
With CONSULT-II: STC-28, "SELF-DIAG RESULT MODE"
Without CONSULT-II: STC-31, "Diagnosis Procedure with Self-Diagnosis Function (Without CONSULT-
II)"
Are malfunctioning items displayed in self-diagnosis results?
YES >> Repair or replace any malfunctioning items.
NO >> GO TO 2.
2. CHECK RAS STATIC/DYNAMIC CHARACTERISTICS
Check RAS static/dynamic characteristics. Refer to STC-48, "
Check RAS Static/Dynamic Characteristics" .
Is the malfunction corrected?
YES >> INSPECTION END
NO >> Perform the following check, and then check the symptom again.
Adjust neutral position of steering angle sensor. Refer to BRC-6, "Adjustment of Steering Angle
Sensor Neutral Position" .
Steering angle sensor mounting condition. Refer to BRC-63, "Removal and Installation" .
Diagnosis Chart by Symptom 2NGS000F2
The steering force does not change smoothly according to the vehicle speed (Heavy steering force with the
vehicle stopped/Light handle operation during high-speed driving)
1. CHECK (1): POWER STEERING SOLENOID VALVE SIGNAL
1. Start engine.
2. Change the vehicle speed from 0 to 100 km/h (0 to 62 MPH)
slowly, and then check voltage RAS control unit harness con-
nector B127.
OK or NG
OK >> GO TO 2.
NG >> GO TO 7.
2. CHECK (2): POWER STEERING SOLENOID VALVE SIGNAL
1. Activate fail-safe function by running engine speed at 1,500 rpm or higher for 10 seconds with the vehicle
stopped.
2. Change the engine speed to the idling speed, approx. 1,600
rpm, and approximately 3,000 rpm slowly, and then check volt-
age RAS control unit harness connector B127.
OK or NG
OK >> GO TO 3.
NG >> GO TO 7.Terminal 36 – 34 : The voltage has changed from
approximately 4.4 - 6.6 V to approxi-
mately 2.4 - 3.6 V.
SGIA1281E
Terminal 36 – 34 : The voltage is changed from
approximately 5.5 V to approximately
2.1 V step-by-step.
SGIA1281E

Page 5462 of 5621

INFINITI M35 2006 Factory Service Manual TROUBLE DIAGNOSIS
STC-47
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Revision: 2006 January2006 M35/M45
3. CHECK POWER STEERING SOLENOID VALVE CONNECTOR
Turn ignition switch OFF, disconnect power steering soleno

Page 5463 of 5621

INFINITI M35 2006 Factory Service Manual STC-48
[RAS]
TROUBLE DIAGNOSIS
Revision: 2006 January2006 M35/M45
Check RAS Static/Dynamic CharacteristicsNGS000F3
1. CHECK (1): RAS ACTUATOR STROKE
Perform CONSULT-II “ACTIVE TEST”, and then

Page 5464 of 5621

INFINITI M35 2006 Factory Service Manual TROUBLE DIAGNOSIS
STC-49
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Revision: 2006 January2006 M35/M45
Component Parts InspectionNGS000F4
RAS MOTOR RELAY
1. Check the resistance between RAS motor relay connecto

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