Nissan Pathfinder (2011 year). Manual — part 113

C1140 ACTUATOR RLY

BRC-169

< DTC/CIRCUIT DIAGNOSIS >

[TYPE 2]

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C1140 ACTUATOR RLY

Description

INFOID:0000000006246054

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

electric unit (control unit).

DTC Logic

INFOID:0000000006246055

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-169, "Diagnosis Procedure"

.

NO

>> Inspection End.

Diagnosis Procedure

INFOID:0000000006689900

Regarding Wiring Diagram information, refer to

BRC-207, "Wiring Diagram - With VK56DE"

.

1.

CONNECTOR INSPECTION

1. Turn ignition switch OFF.

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

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

replace terminal.

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

BRC-138, "CONSULT-III Function

(ABS)"

.

Is any item indicated on the self-diagnosis display?

YES

>> GO TO 2

NO

>> Poor connection of connector terminal. 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) connec-

tor.

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

AWFIA0018ZZ

2011 Pathfinder

BRC-170

< DTC/CIRCUIT DIAGNOSIS >

[TYPE 2]

C1140 ACTUATOR RLY

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-231, "Removal and Installation"

.

NO

>> Repair or replace malfunctioning components.

Component Inspection

INFOID:0000000006689901

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 operates as shown in table below.

Is the inspection result normal?

YES

>> Inspection End.

NO

>> Go to diagnosis procedure. Refer to

BRC-153, "Diagnosis Procedure"

.

Special Repair Requirement

INFOID:0000000006689902

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-121, "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-122, "CALIBRATION OF DECEL G SENSOR : Description"

.

>> END

ABS actuator and electric unit (control unit)

—

Continuity

Connector

Terminal

E127

16, 47

Ground

Yes

AWFIA0016ZZ

Operation

On

Off

MOTOR RELAY

On

Off

ACTUATOR RLY

On

On

2011 Pathfinder

C1142 PRESS SENSOR

BRC-171

< DTC/CIRCUIT DIAGNOSIS >

[TYPE 2]

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C1142 PRESS SENSOR

Description

INFOID:0000000006246059

The front and rear pressure sensors convert the brake fluid pressure to an electric signal and transmit it to the

ABS actuator and electric unit (control unit).

DTC Logic

INFOID:0000000006246060

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-171, "Diagnosis Procedure (Front Pressure Sen-

sor)"

or

BRC-172, "Diagnosis Procedure (Rear Pressure Sensor)"

.

NO

>> Inspection End.

Diagnosis Procedure (Front Pressure Sensor)

INFOID:0000000006246061

Regarding Wiring Diagram information, refer to

BRC-207, "Wiring Diagram - With VK56DE"

.

1.

CONNECTOR INSPECTION

1. Turn the ignition switch OFF.

2. Disconnect the front pressure sensor connector and ABS actuator and electric unit (control unit) connec-

tor and inspect the terminals for deformation, disconnection, looseness, or damage.

Is the inspection result normal?

YES

>> GO TO 2

NO

>> Repair connector.

2.

FRONT PRESSURE SENSOR CIRCUIT INSPECTION

1. Measure the continuity between the ABS actuator and electric

unit (control unit) connector E127 (A) and front pressure sensor

connector E31 (B).

2. Measure the continuity between the ABS actuator and electric unit (control unit) connector E127 (A) and

body ground.

DTC

Display item

Malfunction detected condition

Possible cause

C1142

PRESS SEN CIRCUIT

Pressure sensor signal line is open or shorted, or pres-
sure sensor is malfunctioning.

• Harness or connector
• Pressure sensor
• ABS actuator and electric unit

(control unit)

Self-diagnosis results

PRESS SEN CIRCUIT

ABS actuator and electric unit

(control unit)

Front pressure sensor

Continuity

Connector

Terminal

Connector

Terminal

E127 (A)

18

E31 (B)

3

Yes

19

1

20

2

AWFIA0021ZZ

2011 Pathfinder

BRC-172

< DTC/CIRCUIT DIAGNOSIS >

[TYPE 2]

C1142 PRESS SENSOR

Is the inspection result normal?

YES

>> GO TO 3

NO

>> Repair or replace harness or connector.

3.

FRONT PRESSURE SENSOR INSPECTION

1. Reconnect the front pressure sensor and ABS actuator and electric unit (control unit) connectors.

2. Perform the front pressure sensor (PRESS SENSOR) component inspection. Refer to

BRC-173, "Compo-

nent Inspection (Front Pressure Sensor)"

.

Is the inspection result normal?

YES

>> Perform self-diagnosis again. If the same results appear, replace the ABS actuator and electric

unit (control unit). Refer to

BRC-231, "Removal and Installation"

.

NO

>> Replace the front pressure sensor.

Diagnosis Procedure (Rear Pressure Sensor)

INFOID:0000000006246062

Regarding Wiring Diagram information, refer to

BRC-207, "Wiring Diagram - With VK56DE"

.

1.

CONNECTOR INSPECTION

1. Turn the ignition switch OFF.

2. Disconnect the rear pressure sensor connector and ABS actuator and electric unit (control unit) connector

and inspect the terminals for deformation, disconnection, looseness, or damage.

Is the inspection result normal?

YES

>> GO TO 2

NO

>> Repair connector.

2.

REAR PRESSURE SENSOR CIRCUIT INSPECTION

1. Measure the continuity between the ABS actuator and electric

unit (control unit) connector E127 (A) and rear pressure sensor

connector E32 (B).

2. Measure the continuity between the ABS actuator and electric unit (control unit) connector E127 (A) and

body ground.

ABS actuator and electric unit (control

unit)

—

Continuity

Connector

Terminal

E127 (A)

18

Ground

No

19

20

ABS actuator and electric unit

(control unit)

Rear pressure sensor

Continuity

Connector

Terminal

Connector

Terminal

E127 (A)

21

E32 (B)

1

Yes

22

3

23

2

AWFIA0022ZZ

2011 Pathfinder

C1142 PRESS SENSOR

BRC-173

< DTC/CIRCUIT DIAGNOSIS >

[TYPE 2]

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Is the inspection result normal?

YES

>> GO TO 3

NO

>> Repair or replace harness or connector.

3.

REAR PRESSURE SENSOR INSPECTION

1. Reconnect the rear pressure sensor and ABS actuator and electric unit (control unit) connectors.

2. Perform the rear pressure sensor (PRESS SEN2) component inspection. Refer to

BRC-173, "Component

Inspection (Rear Pressure Sensor)"

.

Is the inspection result normal?

YES

>> Perform self-diagnosis again. If the same results appear, replace the ABS actuator and electric

unit (control unit). Refer to

BRC-231, "Removal and Installation"

.

NO

>> Replace the rear pressure sensor.

Component Inspection (Front Pressure Sensor)

INFOID:0000000006246063

1.

CHECK DATA MONITOR

On “DATA MONITOR”, select “PRESS SENSOR” and check the brake fluid pressure.

Is the inspection result normal?

YES

>> Inspection End.

NO

>> Replace the appropriate pressure sensor. Refer to

BR-51, "Disassembly and Assembly"

.

Component Inspection (Rear Pressure Sensor)

INFOID:0000000006246064

1.

CHECK DATA MONITOR

On “DATA MONITOR”, select “PRESS SEN2” and check the brake fluid pressure.

Is the inspection result normal?

YES

>> Inspection End.

NO

>> Replace the appropriate pressure sensor. Refer to

BR-51, "Disassembly and Assembly"

.

Special Repair Requirement

INFOID:0000000006689903

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-121, "ADJUSTMENT OF STEERING ANGLE SENSOR NEU-

TRAL POSITION : Description"

.

ABS actuator and electric unit (control

unit)

—

Continuity

Connector

Terminal

E127 (A)

21

Ground

No

22

23

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.

Positive value

Condition

PRESS SEN2

(DATA MONITOR)

With ignition switch turned ON and brake pedal released.

Approx. 0 bar

With ignition switch turned ON and brake pedal depressed.

Positive value

2011 Pathfinder

BRC-174

< DTC/CIRCUIT DIAGNOSIS >

[TYPE 2]

C1142 PRESS SENSOR

>> 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-122, "CALIBRATION OF DECEL G SENSOR : Description"

.

>> END

2011 Pathfinder

C1143, C1144 STEERING ANGLE SENSOR

BRC-175

< DTC/CIRCUIT DIAGNOSIS >

[TYPE 2]

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C1143, C1144 STEERING ANGLE SENSOR

Description

INFOID:0000000006246066

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:0000000006246067

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-175, "Diagnosis Procedure"

.

NO

>> Inspection End.

Diagnosis Procedure

INFOID:0000000006246068

Regarding Wiring Diagram information, refer to

BRC-207, "Wiring Diagram - With VK56DE"

.

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 terminal for deformation, disconnection, looseness, and so on. If any malfunction is found, repair or

replace terminal.

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

BRC-138, "CONSULT-III Function

(ABS)"

.

Is any item indicated on the self-diagnosis display?

YES

>> GO TO 2

NO

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

2.

CHECK STEERING ANGLE SENSOR HARNESS

1. Turn ignition switch OFF.

2. Disconnect steering angle sensor connector.

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

2011 Pathfinder

BRC-176

< DTC/CIRCUIT DIAGNOSIS >

[TYPE 2]

C1143, C1144 STEERING ANGLE SENSOR

3. Check continuity between steering angle sensor connector M47

terminal 2 and ground.

4. Turn ignition switch ON.

5. Check voltage between steering angle sensor connector M47

terminal 3 and ground.

Is the inspection result normal?

YES

>> GO TO 3

NO

>> Repair or replace malfunctioning components.

3.

CHECK DATA MONITOR

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

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

BRC-176, "Component Inspection"

.

Is the inspection result normal?

YES

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

BRC-231, "Removal and Installa-

tion"

.

NO

>> Replace steering angle sensor. Refer to

BRC-233, "Removal and Installation"

.

Component Inspection

INFOID:0000000006246069

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

>> Replace steering angle sensor. Refer to

BRC-233, "Removal and Installation"

.

Special Repair Requirement

INFOID:0000000006689904

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-121, "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

2

Ground

Yes

WFIA0399E

Steering angle sensor

—

Voltage

Connector

Terminal

M47

3

Ground

Battery voltage

AWFIA0023ZZ

Steering condition

STR ANGLE SIG (DATA MONITOR)

Driving straight

0

±

2.5

°

Turn 90

°

to left

Approx. +90

°

Turn 90

°

to right

Approx.

−

90

°

2011 Pathfinder