2006 INFINITI M35 check

TROUBLE DIAGNOSIS
STC-35
[RAS]
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Revision: 2006 January2006 M35/M45
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 motor 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. CHECK RAS MOTOR RELAY BATTERY CIRCUIT
1. Turn ignition switch OFF, and disconnect RAS motor relay harness connector B126.
2. Check voltage between RAS motor relay harness connector
B126 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.
Self-diagnostic results
CONTROL_UNIT [ABNORMAL1 - 9]
DTC (warning lamp blinks)
11
Self-diagnosis results
MOTOR_VOLTAGE [LOW_VOLTAGE] (ꞏ a)
MOTOR_VOLTAGE [BAD_OBSTRCT] (ꞏ b)
DTC (warning lamp blinks)
12
Terminal 3 – Ground : Battery voltage (Approx. 12 V)
SGIA1246E

STC-36
[RAS]
TROUBLE DIAGNOSIS
Revision: 2006 January2006 M35/M45
3. CHECK RAS MOTOR RELAY HARNESS
1. Disconnect RAS motor relay harness connector B126 and RAS control unit harness connector B127.
2. Check continuity between RAS motor relay harness connector
B126 and RAS control unit harness connector B127.
3. Check continuity between RAS motor relay harness connector
B126 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)
5. CHECK RAS CONTROL UNIT OUTPUT SIGNAL
1. Connect RAS control unit harness connector B127 and RAS
motor relay harness connector B126.
2. Check voltage between RAS motor relay harness connector
B126 and ground.
OK or NG
OK >> Check RAS motor relay separately from other parts.
Refer to STC-49, "
RAS MOTOR RELAY" .
NG >> RAS control unit malfunction (replacement)Terminal 5 – 37 : Continuity exist.
Terminal 1 – 25 : Continuity exist.
2 – Ground : Continuity exist.
SGIA1265E
Terminal 1 – 2 : Approx. 74
SGIA1266E
1–Ground
Ignition switch ON : Battery voltage (Approx. 12 V)
Ignition switch OFF : Approx. 0V
SGIA1267E

TROUBLE DIAGNOSIS
STC-37
[RAS]
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Revision: 2006 January2006 M35/M45
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.
NG >> 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 B105.
2. Check the resistance RAS motor connector.
OK or NG
OK >> GO TO 3.
NG >> RAS motor malfunction. Replace RAS motor.
3. CHECK RAS MOTOR HARNESS
1. Connect RAS motor harness connector B105.
2. Disconnect RAS control unit harness connector B127.
3. Check continuity RAS control unit harness connector B127.
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.
Self-diagnosis results
MOTOR_OUTPUT [ABNORMAL_SIG] (ꞏ a)
MOTOR_OUTPUT [REV_CURRENT] (ꞏ c)
MOTOR_OUTPUT [NO_CURRENT] (ꞏ d)
MOTOR_OUTPUT [OVERCURRENT] (ꞏ e)
MOTOR_OUTPUT [MOTOR_LOCK] (ꞏ b)
DTC (warning lamp blinks)
13
Terminal 1 – 2 : Approx. 0.6
SGIA1268E
Terminal 38 – 39 : Continuity exist.
SGIA1269E

STC-38
[RAS]
TROUBLE DIAGNOSIS
Revision: 2006 January2006 M35/M45
Inspection 4: Vehicle Speed SignalNGS000ET
1. CHECK SPEEDOMETER
Start the engine, and then check the combination meter (speed meter) 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.
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.
Self-diagnosis results
VEHICLE_SPEED_SEN [NO_SIGNAL]
DTC (warning lamp blinks)
21
Self-diagnosis results
STEERING_ANGLE_SEN [NO_CHANGE] (ꞏ a)
STEERING_ANGLE_SEN [NO_NEUT_STATE] (ꞏ b)
STEERING_ANGLE_SEN [NO_SIGNAL]
STEERING_ANGLE_SEN
DTC (warning lamp blinks)
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TROUBLE DIAGNOSIS
STC-39
[RAS]
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STC
Revision: 2006 January2006 M35/M45
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.
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" .
Steering angle sensor Ground Continuity
Te r m i n a l 2 — Ye s
SGIA1270E
Steering angle sensor Ground Continuity
Terminal 3 — Battery voltage (approx. 12V)
SGIA1271E
Steering condition DATA MONITOR
Straight-ahead position – 3.5 - +3.5
Turn wheel to the right by 90Approx. R 90
Turn wheel to the left by 90Approx. R 90

STC-40
[RAS]
TROUBLE DIAGNOSIS
Revision: 2006 January2006 M35/M45
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.
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 B104.
2. Check continuity rear wheel steering angle sensor harness con-
nector B104 and ground.
3. Turn ignition switch ON, and then check voltage rear wheel
steering angle sensor harness connector B104 and ground.
OK or NG
OK >> GO TO 4.
NG >> GO TO 3.
Self-diagnosis results
RR_ST_ANGLE_SENSOR [MAIN_SIGNAL] (ꞏ a)
RR_ST_ANGLE_SENSOR [SUB_SIGNAL] (ꞏ b)
RR_ST_ANGLE_SENSOR [OFFSET_SIG 1, 2] (ꞏ c)
RR_ST_ANGLE_SENSOR [ABNORMAL_VOL] (ꞏ d)
DTC (warning lamp blinks)
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25
Terminal 3 Ground : Continuity exist.
SGIA1272E
Terminal 1 Ground : Approx. 5 V
SGIA1273E

TROUBLE DIAGNOSIS
STC-41
[RAS]
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STC
Revision: 2006 January2006 M35/M45
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 B104 and RAS
control unit harness connector B127.
2. Check continuity each harness connector of rear wheel steering
angle sensor harness connector B 104 and RAS control unit
harness connector B127.
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 harness.
4. CHECK REAR WHEEL STEERING ANGLE SENSOR OUTPUT SIGNAL
1. Connect rear wheel steering angle sensor harness connector B104.
2. Check voltage RAS control unit harness connector B127 when
starting the engine and turning the steering wheel from neutral
position clockwise/counterclockwise by 180
.
CAUTION:
There is approximately 1 V or more difference between main output and sub output at straight-ahead position, inspection
results are “NG”.
OK or NG
OK >> RAS control unit malfunction. Replace RAS control unit.
NG >> GO TO 5.
SGIA1274E
Rear wheel steering angle sensor RAS control unit Continuity
Terminal 1 Terminal 5 Yes
Te r m i n a l 3 Te r m i n a l 1 5 Ye s
SGIA1275E
Steering conditionRear wheel steering angle sensor
Rear main output
Terminal 4 (+) - 15 (-)Rear sub output
Terminal 7 (+) - 15 (-)
Straight-ahead (neutral position) Approx. 2.4 V Approx. 2.4 V
Turn wheel to the right by 180
Approx. 4.4 V Approx. 4.4 V
Turn wheel to the left by 180
Approx. 0.4 V Approx. 0.4 V

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 sensor harness connector B104 and RAS
control unit harness connector B127.
2. Check continuity between each harness connector of rear wheel
steering angle sensor harness connector B104 and RAS control
unit harness connector B127.
OK or NG
OK >> Rear wheel steering angle sensor malfunction. Replace rear wheel steering angle sensor.
NG >> Harness between rear wheel steering angle sensor and RAS control unit open or shorted. Repair
or replace harness.
Inspection 7: VDC MalfunctionNGS000EW
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.
2. CHECK SELF-DIAGNOSTIC RESULTS
Perform VDC self-diagnosis. Refer to BRC-23, "
Self-Diagnosis" .
OK or NG
OK >> RAS control unit malfunction. Replace RAS control unit.
NG >> Repair or replace indicated part. After that, perform RAS self-diagnosis again to make sure that
there is no malfunction.
SGIA1276E
Rear wheel steering angle sensor RAS C/U Continuity
Te r m i n a l 2 Te r m i n a l 7 Ye s
Te r m i n a l 4 Te r m i n a l 4 Ye s
Self-diagnosis results
VDC
DTC (warning lamp blinks)
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