Infiniti M35/M45 Y50. Manual - part 1120

 

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Infiniti M35/M45 Y50. Manual - part 1120

 

 

TROUBLE DIAGNOSIS

STC-37

[RAS]

C

D

E

F

H

I

J

K

L

M

A

B

STC

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 Malfunction

NGS000ES

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 

SGIA1268E

STC-38

[RAS]

TROUBLE DIAGNOSIS

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 Signal

NGS000ET

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

TROUBLE DIAGNOSIS

STC-39

[RAS]

C

D

E

F

H

I

J

K

L

M

A

B

STC

Inspection 5: Steering Angle Signal Malfunction

NGS000EU

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

STC-40

[RAS]

TROUBLE DIAGNOSIS

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 Malfunction

NGS000EV

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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