Nissan Frontier. Manual - part 163

BRC-180

< DTC/CIRCUIT DIAGNOSIS >

[TYPE 2]

C1140 ACTUATOR RLY

C1140 ACTUATOR RLY

Description

INFOID:0000000009479470

Activates or deactivates each solenoid valve according to the signals transmitted by the ABS actuator and

electric unit (control unit). 

DTC Logic

INFOID:0000000009479471

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-180, "Diagnosis Procedure"

.

NO

>> Inspection End

Diagnosis Procedure

INFOID:0000000009479472

Regarding Wiring Diagram information, refer to 

BRC-213, "Wiring Diagram - VDC WITH HILL DESCENT

CONTROL/HILL START ASSIST"

.

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 connectors and then perform the self-diagnosis. Refer to 

BRC-147, "CONSULT Function

(ABS)"

.

Is any item indicated on the self-diagnosis display?

YES

>> GO TO 2

NO

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

2.

CHECK SOLENOID, VDC SWITCH-OVER VALVE AND ACTUATOR RELAY POWER SUPPLY CIRCUIT

1. Turn ignition switch OFF.

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

3. Check voltage between ABS actuator and electric unit (control unit) connector E127 terminal 32 and

ground.

Is the inspection result normal?

YES

>> GO TO 3

DTC

Display item

Malfunction detected condition

Possible cause

C1140

ACTUATOR RLY

ABS actuator relay or circuit malfunction.

• Harness or connector
• ABS actuator and electric unit 

(control unit)

Self-diagnosis results

ACTUATOR RLY

ABS actuator and electric unit (control unit)

—

Voltage

Connector

Terminal

E127

32

Ground

Battery voltage

C1140 ACTUATOR RLY

BRC-181

< DTC/CIRCUIT DIAGNOSIS >

[TYPE 2]

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BRC

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NO

>> Repair or replace malfunctioning components.

3.

CHECK SOLENOID, VDC SWITCH-OVER VALVE AND ACTUATOR RELAY GROUND CIRCUIT

Check continuity between ABS actuator and electric unit (control unit) connector E127 terminals 16, 47 and

ground.

Is the inspection result normal?

YES

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

BRC-236, "Removal and Installa-

tion"

.

NO

>> Repair or replace malfunctioning components.

Component Inspection

INFOID:0000000009479473

1.

CHECK ACTIVE TEST

1. On “ACTIVE TEST”, select “ABS MOTOR”.

2. Touch On and Off on screen. Make sure motor relay and actuator relay operate as shown in table below.

Is the inspection result normal?

YES

>> Inspection End

NO

>> Go to diagnosis procedure. Refer to 

BRC-180, "Diagnosis Procedure"

.

Special Repair Requirement

INFOID:0000000009479474

1.

ADJUSTMENT OF STEERING ANGLE SENSOR NEUTRAL POSITION

Always perform neutral position adjustment for the steering angle sensor when replacing the ABS actuator

and electric unit (control unit). Refer to 

BRC-124, "ADJUSTMENT OF STEERING ANGLE SENSOR NEU-

TRAL POSITION : Description"

.

>> GO TO 2

2.

CALIBRATION OF DECEL G SENSOR

Always perform calibration of decel G sensor when replacing the ABS actuator and electric unit (control unit).

Refer to 

BRC-125, "CALIBRATION OF DECEL G SENSOR : Description"

.

>> END

ABS actuator and electric unit (control unit)

—

Continuity

Connector

Terminal

E127

16, 47

Ground

Yes

Operation

On

Off

MOTOR RELAY

On

Off

ACTUATOR RLY

On

On

BRC-182

< DTC/CIRCUIT DIAGNOSIS >

[TYPE 2]

C1143, C1144 STEERING ANGLE SENSOR

C1143, C1144 STEERING ANGLE SENSOR

Description

INFOID:0000000009479475

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:0000000009479476

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-182, "Diagnosis Procedure"

.

NO

>> Inspection End

Diagnosis Procedure

INFOID:0000000009479477

Regarding Wiring Diagram information, refer to 

BRC-213, "Wiring Diagram - VDC WITH HILL DESCENT

CONTROL/HILL START ASSIST"

.

1.

CONNECTOR INSPECTION

1. Turn ignition switch OFF.

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

3. Disconnect steering angle sensor connector.

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

or replace terminals.

5. Reconnect connectors and then perform the self-diagnosis. Refer to 

BRC-147, "CONSULT Function

(ABS)"

.

Is any item indicated 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

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

C1143, C1144 STEERING ANGLE SENSOR

BRC-183

< DTC/CIRCUIT DIAGNOSIS >

[TYPE 2]

C

D

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BRC

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1. Turn ignition switch OFF.

2. Disconnect steering angle sensor connector.

3. Check continuity between steering angle sensor connector M47

terminal 1 and ground.

4. Turn ignition switch ON.

5. Check voltage between steering angle sensor connector M47

terminal 2 and ground.

Is the inspection result normal?

YES

>> GO TO 3

NO

>> Repair or replace malfunctioning components.

3.

CHECK DATA MONITOR

Perform the steering angle sensor component inspection. Refer to 

BRC-183, "Component Inspection"

.

Is the inspection result normal?

YES

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

BRC-236, "Removal and Installa-

tion"

.

NO

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

BRC-

238, "Removal and Installation"

.

Component Inspection

INFOID:0000000009479478

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-182, "Diagnosis Procedure"

.

Special Repair Requirement

INFOID:0000000009479479

1.

ADJUSTMENT OF STEERING ANGLE SENSOR NEUTRAL POSITION

Always perform neutral position adjustment for the steering angle sensor when replacing the ABS actuator

and electric unit (control unit). Refer to 

BRC-124, "ADJUSTMENT OF STEERING ANGLE SENSOR NEU-

TRAL POSITION : Description"

.

>> GO TO 2

2.

CALIBRATION OF DECEL G SENSOR

Steering angle sensor

—

Continuity

Connector

Terminal

M47

1

Ground

Yes

AWFIA0447ZZ

Steering angle sensor

—

Voltage

Connector

Terminal

M47

2

Ground

Battery voltage

AWFIA0448ZZ

Steering condition

STR ANGLE SIG (DATA MONITOR)

Driving straight

0

±2.5 °

Turn 90 

° to left

Approx. +90 

°

Turn 90 

° to right

Approx. 

−90 °