Nissan Quest E52. Instruction — part 247

C1142 PRESS SENSOR

BRC-81

< DTC/CIRCUIT DIAGNOSIS >

[WITH VDC]

C

D

E

G

H

I

J

K

L

M

A

B

BRC

N

O

P

Check brake piping.
• Front: Refer to

BR-22, "FRONT : Inspection"

.

• Rear: Refer to

BR-25, "REAR : Inspection"

.

Is the inspection result normal?

YES

>> GO TO 5.

NO

>> Repair or replace error-detected parts.

5.

CHECK BRAKE PEDAL

Check brake pedal. Refer to

BR-19, "Inspection and Adjustment"

.

Is the inspection result normal?

YES

>> GO TO 6.

NO

>> Repair or replace error-detected parts.

6.

CHECK MASTER CYLINDER

Check master cylinder. Refer to

BR-30, "Inspection"

.

Is the inspection result normal?

YES

>> GO TO 7.

NO

>> Repair or replace error-detected parts.

7.

CHECK BRAKE BOOSTER

Check brake booster. Refer to

BR-32, "Inspection and Adjustment"

.

Is the inspection result normal?

YES

>> GO TO 8.

NO

>> Repair or replace error-detected parts.

8.

CHECK VACUUM PIPING

Check vacuum piping. Refer to

BR-33, "Inspection"

.

Is the inspection result normal?

YES

>> GO TO 9.

NO

>> Repair or replace error-detected parts.

9.

CHECK FRONT DISC BRAKE

Check front disc brake. Refer to

BR-42, "BRAKE CALIPER ASSEMBLY : Inspection"

.

Is the inspection result normal?

YES

>> GO TO 10.

NO

>> Repair or replace error-detected parts.

10.

CHECK REAR DISC BRAKE

Check rear disc brake. Refer to

BR-50, "BRAKE CALIPER ASSEMBLY : Inspection"

.

Is the inspection result normal?

YES

>> GO TO 11.

NO

>> Repair or replace error-detected parts.

11.

CHECK ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT)

With CONSULT

1.

Erase self--diagnosis result for “ABS”.

2.

Start the engine and drive the vehicle for a short period of time.

3.

After the vehicle stops, perform self-diagnosis for “ABS”.

Is DTC“C1142” detected?

YES

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

BRC-123, "Removal and Installa-

tion"

.

NO

>> Check pin terminals and connection of ABS actuator and electric unit (control unit) harness con-

nector for abnormal conditions. Repair or replace error-detected parts.

BRC-82

< DTC/CIRCUIT DIAGNOSIS >

[WITH VDC]

C1143 STEERING ANGLE SENSOR

C1143 STEERING ANGLE SENSOR

DTC Logic

INFOID:0000000009651401

DTC DETECTION LOGIC

DTC CONFIRMATION PROCEDURE

1.

PRECONDITIONING

If “DTC CONFIRMATION PROCEDURE” has been previously conducted, always turn ignition switch OFF and
wait at least 10 seconds before conducting the next test.

>> GO TO 2.

2.

CHECK DTC DETECTION

With CONSULT

1.

Turn the ignition switch OFF to ON.

2.

Perform self-diagnosis for “ABS”.

Is DTC “C1143” detected?

YES

>> Proceed to

BRC-82, "Diagnosis Procedure"

.

NO

>> INSPECTION END

Diagnosis Procedure

INFOID:0000000009651402

1.

CHECK STEERING WHEEL PLAY

Check steering wheel play. Refer to

ST-11, "Inspection"

.

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Repair or replace error-detected parts.

2.

CHECK WHEEL ALIGNMENT

Check wheel alignment.
• Front: Refer to

FSU-7, "Inspection"

.

• Rear: Refer to

RSU-6, "Inspection"

.

Is the inspection result normal?

YES

>> GO TO 3.

NO

>>

Adjust wheel alignment.

• Front: Refer to

FSU-7, "Adjustment"

.

• Rear: Refer to

RSU-6, "Adjustment"

.

3.

CHECK CONNECTOR

1.

Turn the ignition switch OFF.

2.

Check ABS actuator and electric unit (control unit) harness connector for disconnection or looseness.

3.

Check steering angle sensor harness connector for disconnection or looseness.

Is the inspection result normal?

YES

>> GO TO 4.

NO

>> Repair or replace error-detected parts, securely lock the connector, and GO TO 4.

DTC

Display Item

Malfunction detected condition

Possible causes

C1143

ST ANG SEN CIRCUIT

• When a malfunction is detected in steering angle

sensor.

• When an open circuit is detected in steering angle

sensor circuit

• When an short circuit is detected in steering angle

sensor circuit

• Wheel alignment is outside specified range.

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

(control unit)

• Fuse
• Ignition power supply system
• CAN communication line
• Wheel alignment

C1143 STEERING ANGLE SENSOR

BRC-83

< DTC/CIRCUIT DIAGNOSIS >

[WITH VDC]

C

D

E

G

H

I

J

K

L

M

A

B

BRC

N

O

P

4.

PERFORM SELF-DIAGNOSIS

Perform self-diagnosis for “ABS” again.
Is DTC “C1143” detected?

YES

>> GO TO 5.

NO

>> INSPECTION END

5.

CHECK STEERING ANGLE SENSOR POWER SUPPLY

1.

Turn the ignition switch OFF.

2.

Disconnect steering angle sensor harness connector.

3.

Check voltage between steering angle sensor harness connector and ground.

4.

Turn the ignition switch ON.

CAUTION:

Never start engine.

5.

Check voltage between steering angle sensor harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 7.

NO

>> GO TO 6.

6.

CHECK STEERING ANGLE SENSOR POWER SUPPLY CIRCUIT

1.

Turn the ignition switch OFF.

2.

Check 10 A fuse (#3).

3.

Disconnect fuse block (J/B) harness connector.

4.

Check continuity between steering angle sensor harness connector and fuse block (J/B) harness connec-
tor.

5.

Check continuity between steering angle sensor harness connector and ground.

Is the inspection result normal?

YES

>> Perform trouble diagnosis for ignition power supply. Refer to

PG-54, "Wiring Diagram - IGNITION

POWER SUPPLY -"

.

NO

>> Repair or replace error-detected parts.

7.

CHECK STEERING ANGLE SENSOR GROUND CIRCUIT

1.

Turn the ignition switch OFF.

2.

Check continuity between steering angle sensor harness connector and ground.

Steering angle sensor

—

Voltage

Connector

Terminal

M30

4

Ground

Approx. 0 V

Steering angle sensor

—

Voltage

Connector

Terminal

M30

4

Ground

10

−

16 V

Steering angle sensor

Fuse block (J/B)

Continuity

Connector

Terminal

Connector

Terminal

M30

4

M1

2A

Existed

Steering angle sensor

—

Continuity

Connector

Terminal

M30

4

Ground

Not existed

BRC-84

< DTC/CIRCUIT DIAGNOSIS >

[WITH VDC]

C1143 STEERING ANGLE SENSOR

Is the inspection result normal?

YES

>> GO TO 8.

NO

>> Repair or replace error-detected parts.

8.

CHECK TERMINAL

1.

Check steering angle sensor pin terminals for damage or loose connection with harness connector.

2.

Check fuse block (J/B) pin terminals for damage or loose connection with harness connector.

Is the inspection result normal?

YES

>> GO TO 9.

NO

>> Repair or replace error-detected parts.

9.

CHECK CAN COMMUNICATION LINE

Check “STRG BRANCH LINE CIRCUIT”. Refer to

LAN-62, "Diagnosis Procedure"

.

Is the inspection result normal?

YES

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

BRC-123, "Removal and Installa-

tion"

.

NO

>> Repair or replace error-detected parts. Refer to

BRC-7, "Precaution for Harness Repair"

.

Steering angle sensor

—

Continuity

Connector

Terminal

M30

1

Ground

Existed