Nissan Quest E52. Manual - part 248

 

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Nissan Quest E52. Manual - part 248

 

 

C1144 INCOMPLETE STEERING ANGLE SENSOR ADJUSTMENT

BRC-85

< DTC/CIRCUIT DIAGNOSIS >

[WITH VDC]

C

D

E

G

H

I

J

K

L

M

A

B

BRC

N

O

P

C1144 INCOMPLETE STEERING ANGLE SENSOR ADJUSTMENT

DTC Logic

INFOID:0000000009651403

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 “C1144” detected?

YES

>> Proceed to 

BRC-85, "Diagnosis Procedure"

.

NO

>> INSPECTION END

Diagnosis Procedure

INFOID:0000000009651404

1.

ADJUST THE NEUTRAL POSITION OF STEERING ANGLE SENSOR

Perform neutral position adjustment of steering angle sensor. Refer to 

BRC-49, "Work Procedure"

.

>> GO TO 2.

2.

CHECK ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT)

 With 

CONSULT

Perform self-diagnosis for “ABS”.
Is DTC “C1144” detected?

YES

>> GO TO 3.

NO

>> INSPECTION END

3.

CHECK STEERING ANGLE SENSOR SYSTEM

1.

Turn the ignition switch OFF.

2.

Check steering angle sensor system. Refer to 

BRC-82, "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.

DTC

Display Item

Malfunction detected condition

Possible causes

C1144

ST ANG SEN SIGNAL

When neutral position adjustment of steering angle 
sensor is not complete.

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

(control unit)

• Incomplete neutral position ad-

justment of steering angle sen-
sor

BRC-86

< DTC/CIRCUIT DIAGNOSIS >

[WITH VDC]

C1145, C1146 YAW RATE/SIDE G SENSOR

C1145, C1146 YAW RATE/SIDE G SENSOR

DTC Logic

INFOID:0000000009651405

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 “C1145” or “C1146” detected?

YES

>> Proceed to 

BRC-86, "Diagnosis Procedure"

.

NO

>> INSPECTION END

Diagnosis Procedure

INFOID:0000000009651406

CAUTION:

• Sudden turns (such as spin turns, acceleration turns), drifting, etc. may cause yaw rate/side G sen-

sor circuit indicate a malfunction. However this is not a malfunction if normal operation can be
resumed after restarting engine.

• When on a turntable, such as at a parking structure entrance, or when on a moving object with

engine running, the VDC warning lamp might turn on and self-diagnosis using the CONSULT yaw
rate sensor system malfunction might be displayed, but in this case there is no malfunction with yaw
rate/side G sensor circuit. As soon as the vehicle leaves the turntable or moving object, restart the
engine to return the system to normal.

1.

CHECK CONNECTOR

1.

Turn ignition switch OFF.

2.

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

3.

Check yaw rate/side G sensor harness connector for disconnection or looseness.

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Repair or replace error-detected parts, securely lock the connector, and GO TO 2.

2.

PERFORM SELF-DIAGNOSIS

Perform self-diagnosis for “ABS” again.

Is DTC “C1145” or “C1146” detected?

YES

>> GO TO 3.

NO

>> INSPECTION END

DTC

Display item

Malfunction detected condition

Possible cause

C1145

YAW RATE SENSOR

• Yaw rate sensor is malfunctioning.
• Yaw rate/side G sensor signal line is open or shorted.
• When yaw rate/side G sensor power supply voltage is 

in following state.

- Yaw rate/side G sensor power supply voltage: 10 V 

 

Yaw rate/side G sensor.

- Yaw rate/side G sensor power supply voltage: 16 V 

 

Yaw rate/side G sensor power supply voltage.

• Harness or connector
• Yaw rate/side G sensor
• ABS actuator and electric unit 

(control unit)

C1146

SIDE G-SEN CIRCUIT

Side G sensor is malfunctioning.

C1145, C1146 YAW RATE/SIDE G SENSOR

BRC-87

< DTC/CIRCUIT DIAGNOSIS >

[WITH VDC]

C

D

E

G

H

I

J

K

L

M

A

B

BRC

N

O

P

3.

CHECK YAW RATE/SIDE G SENSOR POWER SUPPLY

1.

Turn ignition switch OFF.

2.

Disconnect yaw rate/side G sensor harness connector.

3.

Check voltage between yaw rate/side G sensor harness connector and ground.

4.

Turn the ignition switch ON.

CAUTION:

Never start engine.

5.

Check voltage between yaw rate/side G sensor harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 5.

NO

>> GO TO 4.

4.

CHECK YAW RATE/SIDE G SENSOR POWER SUPPLY CIRCUIT

1.

Turn ignition switch OFF.

2.

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

3.

Check continuity between yaw rate/side G sensor harness connector and ABS actuator and electric unit
(control unit) harness connector.

4.

Check continuity between yaw rate/side G sensor harness connector and ground.

Is the inspection result normal?

YES

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

BRC-123, "Removal and Installa-

tion"

.

NO

>> Repair or replace error-detected parts.

5.

CHECK YAW RATE/SIDE G SENSOR GROUND CIRCUIT

1.

Turn ignition switch OFF.

2.

Check continuity between yaw rate/side G sensor harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 6.

NO

>> Repair or replace error-detected parts.

6.

CHECK YAW RATE/SIDE G SENSOR SIGNAL CIRCUIT

Yaw rate/side G sensor

Voltage

Connector

Terminal

M52

4

Ground

Approx. 0 V

Yaw rate/side G sensor

Voltage

Connector

Terminal

M52

4

Ground

Approx. 12 V

Yaw rate/side G sensor

ABS actuator and electric unit (control unit)

Continuity

Connector

Terminal

Connector

Terminal

M52

4

E36

4

Existed

Yaw rate/side G sensor

Continuity

Connector

Terminal

M52

4

Ground

Not existed

Yaw rate/side G sensor

Continuity

Connector

Terminal

M52

1

Ground

Existed

BRC-88

< DTC/CIRCUIT DIAGNOSIS >

[WITH VDC]

C1145, C1146 YAW RATE/SIDE G SENSOR

Check continuity between yaw rate/side G sensor harness connector and ABS actuator and electric unit (con-
trol unit) harness connector.

Is the inspection result normal?

YES

>> GO TO 7.

NO

>> Repair or replace error-detected parts.

7.

CHECK TERMINAL

1.

Disconnect ABS actuator and electric unit (control unit) harness connector and then check ABS actuator
and electric unit (control unit) pin terminals for damage or loose connection with harness connector.

2.

Disconnect yaw rate/side G sensor harness connector and check yaw rate/side G sensor pin terminals for
damage or loose connection with harness connector.

Is the inspection result normal?

YES

>> GO TO 8.

NO

>> Repair or replace error-detected parts.

8.

REPLACE YAW RATE/SIDE G SENSOR

With CONSULT

1.

Connect ABS actuator and electric unit (control unit) harness connector

2.

Replace yaw rate/side G sensor. Refer to 

BRC-125, "Removal and Installation"

.

3.

Erase self-diagnosis result for “ABS”.

4.

Turn the ignition switch OFF.

5.

Turn the ignition switch ON.

CAUTION:

Never start engine.

6.

Perform self-diagnosis for “ABS”.

Is DTC “C1145” or “c1146” detected?

YES

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

BRC-123, "Removal and Installa-

tion"

.

NO

>> INSPECTION END

Yaw rate/side G sensor

ABS actuator and electric unit (control unit)

Continuity

Connector

Terminal

Connector

Terminal

M52

2

E36

25

Existed

3

19

 

 

 

 

 

 

 

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