Infiniti EX35. Manual - part 336

 

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Infiniti EX35. Manual - part 336

 

 

C1142 PRESS SENSOR

BRC-59

< COMPONENT DIAGNOSIS >

[VDC/TCS/ABS]

C

D

E

G

H

I

J

K

L

M

A

B

BRC

N

O

P

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Proceed to diagnosis procedure. Refer to 

BRC-58, "Diagnosis Procedure"

.

Special Repair Requirement

INFOID:0000000003430144

1.

ADJUSTMENT OF STEERING ANGLE SENSOR NEUTRAL POSITION

Always perform the neutral position adjustment for the steering angle sensor, when replacing the ABS actua-
tor and electric unit (control unit). Refer to 

BRC-8, "ADJUSTMENT OF STEERING ANGLE SENSOR NEU-

TRAL POSITION : Description"

.

>> END

Condition

PRESS SENSOR

(DATA MONITOR)

With ignition switch turned ON and brake pedal released.

Approx. 0 bar

With ignition switch turned ON and brake pedal depressed.

 40 to 300 bar

BRC-60

< COMPONENT DIAGNOSIS >

[VDC/TCS/ABS]

C1143 STEERING ANGLE SENSOR

C1143 STEERING ANGLE SENSOR

Description

INFOID:0000000003132936

The steering angle sensor detects the rotation amount, angular velocity and direction of the steering wheel,
and transmits the data to the ABS actuator and electric unit (control unit) via CAN communication.

DTC Logic

INFOID:0000000003132937

DTC DETECTION LOGIC

DTC CONFIRMATION PROCEDURE

1.

DTC REPRODUCTION PROCEDURE

1.

Turn the ignition switch ON.

2.

Perform ABS actuator and electric unit (control unit) self-diagnosis.

Is DTC “C1143” detected?

YES

>> Proceed to diagnosis procedure. Refer to 

BRC-60, "Diagnosis Procedure"

.

NO

>> INSPECTION END

Diagnosis Procedure

INFOID:0000000003132938

1.

CHECK CONNECTOR

1.

Turn the ignition switch OFF.

2.

Disconnect ABS actuator and electric unit (control unit) connector.

3.

Disconnect steering angle sensor connector.

4.

Check terminal for deformation, disconnection, looseness, etc.

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Repair or replace damaged parts.

2.

CHECK STEERING ANGLE SENSOR HARNESS

1.

Turn ignition switch ON.

CAUTION:

Never start the engine.

2.

Check the voltage between steering angle sensor harness connector and ground.

3.

Turn the ignition switch OFF.

4.

Check the continuity between steering angle sensor harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Repair or replace damaged parts.

DTC

Display item

Malfunction detected condition

Possible cause

C1143

ST ANG SEN CIRCUIT

Steering angle sensor is malfunctioning.

• Harness or connector
• Steering angle sensor
• ABS actuator and electric unit 

(control unit)

Steering angle sensor

Voltage

Connector

Terminal

M37

8

Ground

Battery voltage

Steering angle sensor

Continuity

Connector

Terminal

M37

7

Ground

Existed

C1143 STEERING ANGLE SENSOR

BRC-61

< COMPONENT DIAGNOSIS >

[VDC/TCS/ABS]

C

D

E

G

H

I

J

K

L

M

A

B

BRC

N

O

P

3.

CHECK DATA MONITOR

1.

Connect steering angle sensor connector and ABS actuator and electric unit (control unit) connector.

2.

Check steering angle sensor signal. Refer to 

BRC-61, "Component Inspection"

.

Is the inspection result normal?

YES

>> Replace ABS actuator and electric unit (control unit).

NO

>> Replace steering angle sensor and adjust neutral position of steering angle sensor.

Component Inspection

INFOID:0000000003132939

1.

CHECK DATA MONITOR

Select “STR ANGLE SIG” in “DATA MONITOR” and check steering angle sensor signal.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Proceed to diagnosis procedure. Refer to 

BRC-60, "Diagnosis Procedure"

.

Special Repair Requirement

INFOID:0000000003132940

1.

ADJUSTMENT OF STEERING ANGLE SENSOR NEUTRAL POSITION

Always perform the neutral position adjustment for the steering angle sensor, when replacing the steering
angle sensor or the ABS actuator and electric unit (control unit). Refer to 

BRC-8, "ADJUSTMENT OF STEER-

ING ANGLE SENSOR NEUTRAL POSITION : Description"

.

>> END

Steering condition

STR ANGLE SIG (DATA MONITOR)

Driving straight

±

2.5 

°

Turn 90 

°

 to right

Approx. +90 

°

Turn 90 

°

 to left

Approx. 

90 

°

BRC-62

< COMPONENT DIAGNOSIS >

[VDC/TCS/ABS]

C1144 STEERING ANGLE SENSOR

C1144 STEERING ANGLE SENSOR

DTC Logic

INFOID:0000000003441412

DTC DETECTION LOGIC

DTC CONFIRMATION PROCEDURE

1.

DTC REPRODUCTION PROCEDURE

1.

Turn the ignition switch ON.

2.

Select “ST ANG SEN ADJUSTMENT” in “WORK SUPPORT”, and perform adjust the neutral position of
steering angle sensor.

3.

Perform ABS actuator and electric unit (control unit) self-diagnosis.

Is DTC “C1144” detected?

YES

>> Proceed to diagnosis procedure. Refer to 

BRC-62, "Diagnosis Procedure"

.

NO

>> INSPECTION END

Diagnosis Procedure

INFOID:0000000003441413

1.

CHECK STEERING ANGLE SENSOR

Check steering angle sensor. Refer to 

BRC-60, "Diagnosis Procedure"

.

Is the inspection result normal?

YES

>> Replace ABS actuator and electric unit (control unit).

NO

>> Repair or replace damaged parts.

Special Repair Requirement

INFOID:0000000003441415

1.

ADJUSTMENT OF STEERING ANGLE SENSOR NEUTRAL POSITION

Always perform the neutral position adjustment for the steering angle sensor, when replacing the steering
angle sensor or the ABS actuator and electric unit (control unit). Refer to 

BRC-8, "ADJUSTMENT OF STEER-

ING ANGLE SENSOR NEUTRAL POSITION : Description"

.

>> END

DTC

Display item

Malfunction detected condition

Possible cause

C1144

ST ANG SEN SIGNAL

Neutral position of steering angle sensor is not finished.

• Harness or connector
• Steering angle sensor
• ABS actuator and electric unit 

(control unit)

 

 

 

 

 

 

 

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