Infiniti M35/M45 Y50. Manual — part 1122
TROUBLE DIAGNOSIS
STC-45
[RAS]
C
D
E
F
H
I
J
K
L
M
A
B
STC
Inspection 10: Stop Lamp Switch Harness
NGS000EZ
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 B476.
2.
Operate brake pedal, and then check voltage between RAS con-
trol unit harness connector B476 and ground.
OK or NG
OK
>> Stop lamp switch harness is normal.
NG
>> Stop lamp switch harness malfunction. Repair circuit.
Measuring condition
Data monitor
Brake pedal depressed
ON
Brake pedal released
OFF
SGIA1277E
RAS C/U
Ground
Measuring condition
Voltage
Terminal 22
—
Brake pedal depressed
Battery voltage (approx. 12 V)
Brake pedal released
Approx. 0 V
STC-46
[RAS]
TROUBLE DIAGNOSIS
Inspection 11: RAS Warning Lamp Harness
NGS000F0
1.
CHECK RAS WARNING LAMP SIGNAL
Turn ignition switch ON, and then check voltage between RAS con-
trol unit harness connector B476 and ground.
OK or NG
OK
>> Perform self-diagnosis. Refer to
NG
>> GO TO 2.
2.
CHECK RAS WARNING LAMP HARNESS
1.
Turn ignition switch OFF, disconnect RAS control unit harness connector B476 and combination meter
harness connector M52.
2.
Check continuity between RAS control unit harness connector
B476 and combination meter harness connector M52.
3.
Check continuity between RAS control unit harness connector
B476 and ground.
OK or NG
OK
>> GO TO combination meter power supply circuit.
NG
>> Harness between RAS control unit and combination
meter open or shorted. Repair or replace harness.
RAS control unit
Ground
Voltage
Terminal 26
—
Warning lamp OFF
: Approx. 2.8 V or more
Warning lamp ON
: Approx. 1.4 V or less
SGIA1278E
Terminal 26
−
19
: Continuity should exist.
SGIA1279E
Terminal 26
−
Ground
: Continuity should not exist.
SGIA1280E
TROUBLE DIAGNOSIS
STC-47
[RAS]
C
D
E
F
H
I
J
K
L
M
A
B
STC
Diagnosis Chart by Symptom 1
NGS000F1
1.
CHECK SELF-DIAGNOSTIC RESULTS
Perform RAS self-diagnosis.
●
STC-28, "SELF-DIAG RESULT MODE"
●
Without CONSULT-II:
STC-31, "Diagnosis Procedure with Self-Diagnosis Function (Without CONSULT-
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-49, "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
●
Steering angle sensor mounting condition. Refer to
BRC-60, "Removal and Installation"
Diagnosis Chart by Symptom 2
NGS000F2
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 B476.
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 B476.
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
STC-48
[RAS]
TROUBLE DIAGNOSIS
3.
CHECK POWER STEERING SOLENOID VALVE CONNECTOR
Turn ignition switch OFF, disconnect power steering solenoid valve harness connector, and check terminal for
deformation, disconnection, looseness, etc.
OK or NG
OK
>> GO TO 4.
NG
>> Harness or connector open or shorted. Repair or replace any inoperative parts.
4.
CHECK POWER STEERING SOLENOID VALVE POWER SUPPLY CIRCUIT
Check continuity between RAS control unit harness connector B476
(A) and power steering solenoid valve harness connector F25
(VQ35DE), E211 (VK45DE) (B).
OK or NG
OK
>> GO TO 5.
NG
>> Open or short in harness. Repair or replace any inoper-
ative parts.
5.
CHECK POWER STEERING SOLENOID VALVE GROUND CIRCUIT
Check continuity between power steering solenoid valve harness
connector F25 (VQ35DE), E211 (VK45DE) and ground.
OK or NG
OK
>> GO TO 6.
NG
>> Open or short in harness. Repair or replace any inoper-
ative parts.
6.
CHECK POWER STEERING SOLENOID VALVE
Apply voltage power steering solenoid valve connector F25
(VQ35DE), E211 (VK45DE) and then make sure that the operating
sound (clicking sound) is heard.
OK or NG
OK
>> Perform steering wheel turning force inspection. Refer
to
PS-10, "CHECKING STEERING WHEEL TURNING
NG
>> Power steering solenoid valve is inoperating. Replace it.
7.
CHECK SELF-DIAGNOSIS 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-
Are malfunctioning items displayed in self-diagnosis results?
YES
>> Repair or replace any malfunctioning items.
NO
>> RAS control unit malfunction. Replace it.
RAS C/U
Power steering solenoid valve
Continuity
Terminal 36
Terminal 1
Yes
SGIA1652E
Terminal 2 – Ground
: Continuity should exist.
SGIA1283E
Terminal 1 (+) - 2 (-)
: Operating sound is heard.
SGIA1284E
Нет комментариевНе стесняйтесь поделиться с нами вашим ценным мнением.
Текст