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![INFINITI M35 2007 Factory Service Manual STC-34
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TROUBLE DIAGNOSIS
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DIAGNOSIS CHART BY SYMPTOM
24 Rear wheel steering angle (main)RR ST ANGLE SENSOR [MAIN SIGNAL] [C1915]
STC-40RR ST ANGLE SENSOR [ABNORMA INFINITI M35 2007 Factory Service Manual STC-34
[RAS]
TROUBLE DIAGNOSIS
Revision: 2007 April2007 M35/M45
DIAGNOSIS CHART BY SYMPTOM
24 Rear wheel steering angle (main)RR ST ANGLE SENSOR [MAIN SIGNAL] [C1915]
STC-40RR ST ANGLE SENSOR [ABNORMA](/manual-img/42/57024/w960_57024-4472.png)
STC-34
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TROUBLE DIAGNOSIS
Revision: 2007 April2007 M35/M45
DIAGNOSIS CHART BY SYMPTOM
24 Rear wheel steering angle (main)RR ST ANGLE SENSOR [MAIN SIGNAL] [C1915]
STC-40RR ST ANGLE SENSOR [ABNORMAL VOL] [C1914]
RR ST ANGLE SENSOR [OFFSET SIG1] [C1917]
RR ST ANGLE SENSOR [OFFSET SIG2] [C1918]
25 Rear wheel steering angle (sub)RR ST ANGLE SENSOR [SUB SIGNAL] [C1916]
RR ST ANGLE SENSOR [ABNORMAL VOL] [C1914]
RR ST ANGLE SENSOR [OFFSET SIG1] [C1917]
RR ST ANGLE SENSOR [OFFSET SIG2] [C1918]
26 VDC VDC [C1929]STC-43
33 Engine speed signal MOTOR OUTPUT [C1921]STC-44
— CAN COMM CIRCUIT [U1000]
STC-44
— CONTROL UNIT (CAN) [U1010]
Symptom Reference
It is not entering the self-diagnosis mode.STC-32, "
BASIC INSPECTION 3: RAS CONTROL UNIT POWER
SUPPLY CIRCUIT AND GROUND CIRCUIT INSPECTION"
STC-45, "Inspection 10: Stop Lamp Switch Harness"
STC-46, "Inspection 11: RAS Warning Lamp Harness"
RAS warning lamp does not turn on with ignition switch ON.STC-32, "
BASIC INSPECTION 3: RAS CONTROL UNIT POWER
SUPPLY CIRCUIT AND GROUND CIRCUIT INSPECTION"
STC-46, "Inspection 11: RAS Warning Lamp Harness"
RAS warning lamp turns on with ignition switch ON. It does not
turn off even if the engine is started.STC-32, "
Basic Inspection"
STC-28, "SELF-DIAG RESULT MODE"
STC-31, "Diagnosis Procedure with Self-Diagnosis Function
(Without CONSULT-II)"
RAS warning lamp may turn on after the engine is started.STC-28, "SELF-DIAG RESULT MODE"
The steering force does not change smoothly according to the
vehicle speed.STC-47, "Diagnosis Chart by Symptom 2"
Noise
STC-28, "SELF-DIAG RESULT MODE"
STC-31, "Diagnosis Procedure with Self-Diagnosis Function
(Without CONSULT-II)"
STC-14, "INSPECTION AFTER DISASSEMBLY"
Malfunction other than aboveSTC-47, "Diagnosis Chart by Symptom 1"
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Inspection 1: RAS Control Unit MalfunctionNGS000EQ
1. CHECK SELF-DIAGNOSIS RESULTS
Check self-diagnosis resul INFINITI M35 2007 Factory Service Manual TROUBLE DIAGNOSIS
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Inspection 1: RAS Control Unit MalfunctionNGS000EQ
1. CHECK SELF-DIAGNOSIS RESULTS
Check self-diagnosis resul](/manual-img/42/57024/w960_57024-4473.png)
TROUBLE DIAGNOSIS
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Inspection 1: RAS Control Unit MalfunctionNGS000EQ
1. CHECK SELF-DIAGNOSIS RESULTS
Check self-diagnosis results.
With CONSULT-II
Without CONSULT-II
Is above displayed on self-diagnosis display?
YES >> Replace RAS control unit. Perform self-diagnosis again after replacing.
NO >> INSPECTION END
Inspection 2: Motor Power Supply SystemNGS000ER
1. CHECK RAS CONTROL UNIT CONNECTOR
1. Turn ignition switch OFF, disconnect RAS control unit harness connector and RAS motor harness connec-
tor, and check terminal for deformation, disconnection, looseness, etc.
2. Reconnect harness connector securely, and perform self-diagnosis.
With CONSULT-II
Without CONSULT-II
Is above displayed on self-diagnosis display?
YES >> GO TO 2.
NO >> Connector terminal connection is loose, damaged, open, or shorted. Repair or replace the termi-
nal.
Self-diagnostic results
CONTROL UNIT [ABNORMAL1] [C1900]
CONTROL UNIT [ABNORMAL2] [C1901]
CONTROL UNIT [ABNORMAL3] [C1905]
CONTROL UNIT [ABNORMAL5] [C1906]
CONTROL UNIT [ABNORMAL4] [C1907]
CONTROL UNIT [ABNORMAL7] [C1908]
CONTROL UNIT [ABNORMAL6] [C1909]
CONTROL UNIT [ABNORMAL8] [C1922]
CONTROL UNIT [ABNORMAL5] [C1927]
CONTROL UNIT [ABNORMAL9] [C1928]
DTC (warning lamp blinks)
11
Self-diagnosis results
MOTOR VOLTAGE [LOW VOLTAGE] [C1911]
MOTOR VOLTAGE [BAD OBSTRCT] [C1912]
DTC (warning lamp blinks)
12
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![INFINITI M35 2007 Factory Service Manual STC-36
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TROUBLE DIAGNOSIS
Revision: 2007 April2007 M35/M45
2. CHECK RAS MOTOR RELAY BATTERY CIRCUIT
1. Turn ignition switch OFF, and disconnect RAS motor relay harness connector B480.
2. Check vo INFINITI M35 2007 Factory Service Manual STC-36
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TROUBLE DIAGNOSIS
Revision: 2007 April2007 M35/M45
2. CHECK RAS MOTOR RELAY BATTERY CIRCUIT
1. Turn ignition switch OFF, and disconnect RAS motor relay harness connector B480.
2. Check vo](/manual-img/42/57024/w960_57024-4474.png)
STC-36
[RAS]
TROUBLE DIAGNOSIS
Revision: 2007 April2007 M35/M45
2. CHECK RAS MOTOR RELAY BATTERY CIRCUIT
1. Turn ignition switch OFF, and disconnect RAS motor relay harness connector B480.
2. Check voltage between RAS motor relay harness connector
B480 and ground.
OK or NG
OK >> GO TO 3.
NG >> RAS motor relay power supply circuit open or shorted.
Repair or replace power supply circuit and fuse.
3. CHECK RAS MOTOR RELAY HARNESS
1. Disconnect RAS motor relay harness connector B480 and RAS control unit harness connector B476.
2. Check continuity between RAS motor relay harness connector
B480 and RAS control unit harness connector B476.
3. Check continuity between RAS motor relay harness connector
B480 and ground.
OK or NG
OK >> GO TO 4.
NG >> RAS motor relay harness open or shorted. Repair or replace applicable malfunctioning harness.
4. CHECK RAS MOTOR RELAY RESISTANCE
Check the resistance between RAS motor relay connector.
OK or NG
OK >> GO TO 5.
NG >> RAS motor relay malfunction (replacement)Terminal 3 – Ground : Battery voltage (Approx. 12 V)
SGIA1246E
Terminal 5 – 37 : Continuity should exist.
Terminal 1 – 25 : Continuity should exist.
2 – Ground : Continuity should exist.
SGIA1265E
Terminal 1 – 2 : Approx. 74 Ω
SGIA1266E
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5. CHECK RAS CONTROL UNIT OUTPUT SIGNAL
1. Connect RAS control unit harness connector B476 and RAS
motor rela INFINITI M35 2007 Factory Service Manual TROUBLE DIAGNOSIS
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5. CHECK RAS CONTROL UNIT OUTPUT SIGNAL
1. Connect RAS control unit harness connector B476 and RAS
motor rela](/manual-img/42/57024/w960_57024-4475.png)
TROUBLE DIAGNOSIS
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5. CHECK RAS CONTROL UNIT OUTPUT SIGNAL
1. Connect RAS control unit harness connector B476 and RAS
motor relay harness connector B480.
2. Check voltage between RAS motor relay harness connector
B480 and ground.
OK or NG
OK >> Check RAS motor relay separately from other parts.
Refer to STC-50, "
RAS MOTOR RELAY" .
NG >> RAS control unit malfunction (replacement)
Inspection 3: RAS Motor Output MalfunctionNGS000ES
1. CHECK RAS CONTROL UNIT CONNECTOR
1. Turn ignition switch OFF, disconnect RAS control unit harness connector and RAS motor harness connec-
tor, and check terminal for deformation, disconnection, looseness, etc.
2. Reconnect harness connector securely, and perform self-diagnosis.
With CONSULT-II
Without CONSULT-II
Is above displayed on self-diagnosis display?
YES >> GO TO 2.
NO >> Connector terminal connection is loose, damaged, open, or shorted. Repair or replace the termi-
nal.
2. CHECK RAS MOTOR RESISTANCE
1. Turn ignition switch OFF, and disconnect RAS motor harness connector B463.
2. Check the resistance RAS motor connector.
OK or NG
OK >> GO TO 3.
NG >> RAS motor malfunction. Replace RAS motor.1–Ground
Ignition switch ON : Battery voltage (Approx. 12 V)
Ignition switch OFF : Approx. 0V
SGIA1267E
Self-diagnosis results
MOTOR OUTPUT [ABNORMAL SIG] [C1913]
MOTOR OUTPUT [REV CURRENT] [C1902]
MOTOR OUTPUT [NO CURRENT] [C1903]
MOTOR OUTPUT [OVERCURRENT] [C1904]
MOTOR OUTPUT [MOTOR LOCK] [C1910]
DTC (warning lamp blinks)
13
Terminal 1 – 2 : Approx. 0.6 Ω
SGIA1268E
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![INFINITI M35 2007 Factory Service Manual STC-38
[RAS]
TROUBLE DIAGNOSIS
Revision: 2007 April2007 M35/M45
3. CHECK RAS MOTOR HARNESS
1. Connect RAS motor harness connector B463.
2. Disconnect RAS control unit harness connector B476.
3. Check INFINITI M35 2007 Factory Service Manual STC-38
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TROUBLE DIAGNOSIS
Revision: 2007 April2007 M35/M45
3. CHECK RAS MOTOR HARNESS
1. Connect RAS motor harness connector B463.
2. Disconnect RAS control unit harness connector B476.
3. Check](/manual-img/42/57024/w960_57024-4476.png)
STC-38
[RAS]
TROUBLE DIAGNOSIS
Revision: 2007 April2007 M35/M45
3. CHECK RAS MOTOR HARNESS
1. Connect RAS motor harness connector B463.
2. Disconnect RAS control unit harness connector B476.
3. Check continuity RAS control unit harness connector B476.
OK or NG
OK >> RAS control unit malfunction. Replace RAS control unit.
NG >> Harness between RAS motor and RAS control unit open
or shorted. Repair or replace harness.
Inspection 4: Vehicle Speed SignalNGS000ET
1. CHECK SPEEDOMETER
Start the engine, and then check the combination meter (speedometer) operation.
Does it operate normally?
YES >> GO TO 2.
NO >> Combination meter. Refer to DI-5, "
COMBINATION METERS" .
2. CHECK RAS CONTROL UNIT CONNECTOR
1. Turn ignition switch OFF, disconnect RAS control unit harness connector, and check terminal for deforma-
tion, disconnection, looseness, etc.
2. Reconnect harness connector securely, and perform self-diagnosis.
With CONSULT-II
Without CONSULT-II
Is above displayed on self-diagnosis display?
YES >> RAS control unit malfunction. Replace RAS control unit.
NO >> Connector terminal connection is loose, damaged, open, or shorted. Repair or replace the termi-
nal. Terminal 38 – 39 : Continuity should exist.
SGIA1269E
Self-diagnosis results
VEHICLE SPEED SEN [NO SIGNAL] [C1919]
DTC (warning lamp blinks)
21
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Inspection 5: Steering Angle Signal MalfunctionNGS000EU
1. CHECK CONNECTOR
1. Turn ignition switch OFF, disco INFINITI M35 2007 Factory Service Manual TROUBLE DIAGNOSIS
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Inspection 5: Steering Angle Signal MalfunctionNGS000EU
1. CHECK CONNECTOR
1. Turn ignition switch OFF, disco](/manual-img/42/57024/w960_57024-4477.png)
TROUBLE DIAGNOSIS
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Inspection 5: Steering Angle Signal MalfunctionNGS000EU
1. CHECK CONNECTOR
1. Turn ignition switch OFF, disconnect RAS control unit harness connector and steering angle sensor har-
ness connector, and check terminal for deformation, disconnection, looseness, etc.
2. Reconnect harness connector securely, and perform self-diagnosis.
With CONSULT-II
Without CONSULT-II
Is above displayed on self-diagnosis display?
YES >> GO TO 2.
NO >> Connector terminal connection is loose, damaged, open, or shorted. Repair or replace the termi-
nal.
2. ADJUST NEUTRAL POSITION OF STEERING ANGLE SENSOR
Adjust the steering angle sensor neutral position, and then perform self-diagnosis again. Refer to BRC-6,
"Adjustment of Steering Angle Sensor Neutral Position" .
Is the result of self-diagnosis normal?
OK >> Inappropriate neutral position adjustment of steering angle sensor.
NG >> GO TO 3.
3. CHECK STEERING ANGLE SENSOR POWER SUPPLY AND GROUND CIRCUIT
1. Turn ignition switch OFF, and disconnect steering angle sensor harness connector M47.
2. Check continuity steering angle sensor harness connector M47
and ground.
3. Turn ignition switch ON, and then check voltage steering angle
sensor harness connector M47 and ground.
OK or NG
OK >> GO TO 4.
NG >> Steering angle sensor power supply and ground circuit
open or shorted. Repair or replace the applicable mal-
functioning circuit.
Self-diagnosis results
STEERING ANGLE SEN [NO CHANGE] [C1923]
STEERING ANGLE SEN [NO NEUT STATE] [C1924]
STEERING ANGLE SEN [NO SIGNAL] [C1920]
STEERING ANGLE SEN [C1926]
DTC (warning lamp blinks)
22
Steering angle sensor Ground Continuity
Terminal 2 — Yes
SGIA1270E
Steering angle sensor Ground Continuity
Terminal 3 —Battery voltage
(approx. 12V)
SGIA1271E
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![INFINITI M35 2007 Factory Service Manual STC-40
[RAS]
TROUBLE DIAGNOSIS
Revision: 2007 April2007 M35/M45
4. DATA MONITOR
1. Connect steering angle sensor harness connector.
2. Select “DATA MONITOR” on “STEERING ANG” mode, and then ch INFINITI M35 2007 Factory Service Manual STC-40
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TROUBLE DIAGNOSIS
Revision: 2007 April2007 M35/M45
4. DATA MONITOR
1. Connect steering angle sensor harness connector.
2. Select “DATA MONITOR” on “STEERING ANG” mode, and then ch](/manual-img/42/57024/w960_57024-4478.png)
STC-40
[RAS]
TROUBLE DIAGNOSIS
Revision: 2007 April2007 M35/M45
4. DATA MONITOR
1. Connect steering angle sensor harness connector.
2. Select “DATA MONITOR” on “STEERING ANG” mode, and then check the steering angle.
OK or NG
OK >> RAS control unit malfunction. Replace RAS control unit.
NG >> Replace steering angle sensor and adjust neutral position of steering angle sensor. Refer to BRC-
6, "Adjustment of Steering Angle Sensor Neutral Position" .
Inspection 6: Rear Main Signal and Rear Sub Signal MalfunctionNGS000EV
1. CHECK RAS CONTROL UNIT CONNECTOR
1. Turn ignition switch OFF, disconnect RAS control unit harness connector and rear wheel steering angle
sensor harness connector, and check terminal for deformation, disconnection, looseness, etc.
2. Reconnect harness connector securely, and perform self-diagnosis.
With CONSULT-II
Without CONSULT-II
Is above displayed on self-diagnosis display?
YES >> GO TO 2.
NO >> Connector terminal connection is loose, damaged, open, or shorted. Repair or replace the termi-
nal.
Steering condition DATA MONITOR
Straight-ahead position – 3.5 - +3.5°
Turn wheel to the right by 90°Approx. R 90°
Turn wheel to the left by 90°Approx. R 90°
Self-diagnosis results
RR ST ANGLE SENSOR [MAIN SIGNAL] [C1915]
RR ST ANGLE SENSOR [SUB SIGNAL] [C1916]
RR ST ANGLE SENSOR [OFFSET SIG1] [C1917]
RR ST ANGLE SENSOR [OFFSET SIG2] [C1918]
RR ST ANGLE SENSOR [ABNORMAL VOL] [C1914]
DTC (warning lamp blinks)
24
25
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2. CHECK (1): REAR WHEEL STEERING ANGLE SENSOR POWER SUPPLY AND GROUND CIRCUIT
1. Turn ignition switch OFF, a INFINITI M35 2007 Factory Service Manual TROUBLE DIAGNOSIS
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2. CHECK (1): REAR WHEEL STEERING ANGLE SENSOR POWER SUPPLY AND GROUND CIRCUIT
1. Turn ignition switch OFF, a](/manual-img/42/57024/w960_57024-4479.png)
TROUBLE DIAGNOSIS
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2. CHECK (1): REAR WHEEL STEERING ANGLE SENSOR POWER SUPPLY AND GROUND CIRCUIT
1. Turn ignition switch OFF, and disconnect rear wheel steering angle sensor harness connector B465.
2. Check continuity rear wheel steering angle sensor harness con-
nector B465 and ground.
3. Turn ignition switch ON, and then check voltage rear wheel
steering angle sensor harness connector B465 and ground.
OK or NG
OK >> GO TO 4.
NG >> GO TO 3.
3. CHECK (2): REAR WHEEL STEERING ANGLE SENSOR POWER SUPPLY AND GROUND CIRCUIT
1. Turn ignition switch OFF, disconnect rear wheel steering angle sensor harness connector B465 and RAS
control unit harness connector B476.
2. Check continuity each harness connector of rear wheel steering
angle sensor harness connector B465 (A) and RAS control unit
harness connector B476 (B).
OK or NG
OK >> RAS control unit malfunction. Replace RAS control unit.
NG >> Harness between rear wheel steering angle sensor and
RAS control unit open or shorted. Repair or replace har-
ness. Terminal 3 − Ground : Continuity should exist.
SGIA1272E
Terminal 1 − Ground : Approx. 5 V
SGIA1273E
Rear wheel steering angle sensor RAS control unit Continuity
Terminal 1 Terminal 5 Yes
Terminal 3 Terminal 15 Yes
SGIA1650E