Nissan Maxima. Instruction — part 258

C1142 PRESS SEN CIRCUIT

BRC-53

< DTC/CIRCUIT DIAGNOSIS >

[VDC/TCS/ABS]

C

D

E

G

H

I

J

K

L

M

A

B

BRC

N

O

P

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-6, "ADJUSTMENT OF STEERING ANGLE SENSOR NEU-

TRAL POSITION : Special Repair Requirement"

.

>> END

BRC-54

< DTC/CIRCUIT DIAGNOSIS >

[VDC/TCS/ABS]

C1143, C1144 STEERING ANGLE SENSOR

C1143, C1144 STEERING ANGLE SENSOR

Description

INFOID:0000000010049092

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:0000000010049093

DTC DETECTION LOGIC

DTC CONFIRMATION PROCEDURE

1.

CHECK SELF-DIAGNOSIS RESULTS

Check the self-diagnosis results.

Is above displayed on the self-diagnosis display?

YES

>> Proceed to diagnosis procedure. Refer to

BRC-54, "Diagnosis Procedure"

.

NO

>> Inspection End.

Diagnosis Procedure

INFOID:0000000010049094

Regarding Wiring Diagram information, refer to

BRC-83, "Wiring Diagram"

.

1.

CONNECTOR INSPECTION

1. Turn ignition switch OFF.

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

3. Check terminals for deformation, disconnection, looseness, and so on. If any malfunction is found, repair

or replace terminals.

4. Reconnect connector and perform self-diagnosis. Refer to

BRC-21, "CONSULT Function (ABS)"

.

Is any item displayed on the self-diagnosis display?

YES

>> GO TO 2

NO

>> Poor connection of connector terminals. Repair or replace connector.

2.

CHECK STEERING ANGLE SENSOR HARNESS

1. Check CAN communication system. Refer to

LAN-15, "Trouble

Diagnosis Flow Chart"

.

2. Turn ignition switch OFF.

3. Disconnect steering angle sensor connector.

4. Check continuity between steering angle sensor harness con-

nector M53 terminal 1 and ground.

DTC

Display item

Malfunction detected condition

Possible cause

C1143

ST ANG SEN CIRCUIT

Neutral position of steering angle sensor is dislocated, or
the steering angle sensor is malfunctioning.

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

(control unit)

C1144

ST ANG SEN SIGNAL

Neutral position of steering angle sensor is not finished.

Self-diagnosis results

ST ANG SEN CIRCUIT

ST ANG SEN SIGNAL

Steering angle sensor

Ground

Continuity

Connector

Terminal

M53

1

—

Yes

ALFIA0017ZZ

C1143, C1144 STEERING ANGLE SENSOR

BRC-55

< DTC/CIRCUIT DIAGNOSIS >

[VDC/TCS/ABS]

C

D

E

G

H

I

J

K

L

M

A

B

BRC

N

O

P

5. Turn ignition switch ON.

6. Check voltage between steering angle sensor connector M53

terminal 4 and ground.

Is the inspection result normal?

YES

>> GO TO 3

NO

>> Repair or replace malfunctioning components.

3.

CHECK DATA MONITOR

1. Turn ignition switch OFF.

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

3. Perform the steering angle sensor component inspection. Refer to

BRC-55, "Component Inspection"

.

Is the inspection result normal?

YES

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

BRC-106, "Removal and Installa-

tion"

.

NO

>> Replace steering angle sensor. Refer to

BRC-109, "Removal and Installation"

.

Component Inspection

INFOID:0000000010049095

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

>> Go to diagnosis procedure. Refer to

BRC-54, "Diagnosis Procedure"

.

Special Repair Requirement

INFOID:0000000010049096

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-6, "ADJUSTMENT OF STEERING ANGLE SENSOR NEU-

TRAL POSITION : Special Repair Requirement"

.

>> END

Steering angle sensor

Ground

Voltage

(Approx.)

Connector

Terminal

M53

4

—

Battery voltage

ALFIA0018ZZ

Steering condition

STR ANGLE SIG (DATA MONITOR)

Driving straight

±2.5 °

Turn 90

° to right

Approx. +90

°

Turn 90

° to left

Approx.

−90 °

BRC-56

< DTC/CIRCUIT DIAGNOSIS >

[VDC/TCS/ABS]

C1145, C1146 YAW RATE/SIDE/DECEL G SENSOR

C1145, C1146 YAW RATE/SIDE/DECEL G SENSOR

Description

INFOID:0000000010049097

The yaw rate/side/decel G sensor detects the yaw rate/side/decel G affecting the vehicle, and transmits the

data to the ABS actuator and electric unit (control unit) as an analog voltage signal.

DTC Logic

INFOID:0000000010049098

DTC DETECTION LOGIC

DTC CONFIRMATION PROCEDURE

1.

CHECK SELF-DIAGNOSIS RESULTS

Check the self-diagnosis results.

Is above displayed on the self-diagnosis display?

YES

>> Proceed to diagnosis procedure. Refer to

BRC-56, "Diagnosis Procedure"

.

NO

>> Inspection End.

Diagnosis Procedure

INFOID:0000000010049099

Regarding Wiring Diagram information, refer to

BRC-83, "Wiring Diagram"

.

CAUTION:

• Sudden turns (such as spin turns, acceleration turns), drifting, etc., when VDC function is off (VDC

OFF switch “ON”) may cause yaw rate/side/decel G sensor system to indicate a malfunction. How-

ever, this is not a malfunction if normal operation can be resumed after restarting engine. Then erase

memory of self-diagnosis.

• If vehicle is on turn-table at entrance to parking garage, or on other moving surfaces, SLIP indicator

lamp may illuminate and CONSULT self-diagnosis may indicate yaw rate sensor system malfunction.

However, in this case there is no malfunction in yaw rate sensor system. Take vehicle off of turn-

table or other moving surfaces, and start engine. Results will return to normal. Also, after doing spin

turns or acceleration turns with VDC function off (VDC OFF switch “ON”), the results will return to a

normal condition by re-starting vehicle.

1.

CONNECTOR INSPECTION

1. Turn ignition switch OFF.

2. Disconnect yaw rate/side/decel G sensor connector and ABS actuator and electric unit (control unit) con-

nector.

3. Check terminals for deformation, disconnection, looseness, and so on. If any malfunction is found, repair

or replace terminals.

4. Reconnect connectors and perform self-diagnosis. Refer to

BRC-21, "CONSULT Function (ABS)"

.

Is any item displayed on the self-diagnosis display?

YES

>> GO TO 2

NO

>> Poor connection of connector terminals. Repair or replace connectors.

DTC

Display item

Malfunction detected condition

Possible cause

C1145

YAW RATE SENSOR

Yaw rate sensor is malfunctioning, or the yaw rate sensor
signal line is open or shorted.

• Harness or connector
• ABS actuator and electric unit

(control unit)

• Yaw rate/side G sensor

C1146

SIDE G-SEN CIRCUIT

Side G sensor is malfunctioning, or circuit of side G sen-
sor is open or shorted.

Self-diagnosis results

YAW RATE SENSOR

SIDE G-SEN CIRCUIT