Nissan Pathfinder (2012 year). Manual - part 99

BRC-58

< DTC/CIRCUIT DIAGNOSIS >

[TYPE 1]

C1130, C1131, C1132, C1133, C1136 ENGINE SIGNAL

C1130, C1131, C1132, C1133, C1136 ENGINE SIGNAL

Description

INFOID:0000000007356733

ABS actuator and electric unit (control unit) and ECM exchange the engine signal with CAN communication

line.

DTC Logic

INFOID:0000000007356734

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-58, "Diagnosis Procedure"

.

NO

>> Inspection End.

Diagnosis Procedure

INFOID:0000000007356735

1.

CHECK ENGINE SYSTEM

1. Perform ECM self-diagnosis. Repair or replace items indicated, then perform ECM self-diagnosis again.

Refer to  

EC-77, "CONSULT Function"

.

2. Perform ABS actuator and electric unit (control unit) self-diagnosis. Refer to 

BRC-29, "CONSULT Func-

tion (ABS)"

.

Is any item indicated on the self-diagnosis display?

YES

>> Repair or replace the affected part.

NO

>> Inspection End.

DTC

Display item

Malfunction detected condition

Possible cause

C1130

ENGINE SIGNAL 1

Based on the signal from ECM, ABS actuator and electric 
unit (control unit) judges that engine fuel cut system is 
malfunctioning.

• Harness or connector
• ABS actuator and electric unit 

(control unit)

• ECM
• CAN communication line

C1131

ENGINE SIGNAL 2

C1132

ENGINE SIGNAL 3

C1133

ENGINE SIGNAL 4

C1136

ENGINE SIGNAL 6

Self-diagnosis results

ENGINE SIGNAL 1

ENGINE SIGNAL 2

ENGINE SIGNAL 3

ENGINE SIGNAL 4

ENGINE SIGNAL 6

August 2012

2012 Pathfinder

C1140 ACTUATOR RLY

BRC-59

< DTC/CIRCUIT DIAGNOSIS >

[TYPE 1]

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N

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C1140 ACTUATOR RLY

Description

INFOID:0000000007356736

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

electric unit (control unit). 

DTC Logic

INFOID:0000000007356737

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-59, "Diagnosis Procedure"

.

NO

>> Inspection End.

Diagnosis Procedure

INFOID:0000000007818468

Regarding Wiring Diagram information, refer to 

BRC-88, "Wiring Diagram - With VQ40DE"

.

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-29, "CONSULT 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 E125 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

E125

32

Ground

Battery voltage

AWFIA0018ZZ

August 2012

2012 Pathfinder

BRC-60

< DTC/CIRCUIT DIAGNOSIS >

[TYPE 1]

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 E125 terminals 16, 47 and ground.

Is the inspection result normal?

YES

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

Refer to 

BRC-112, "Removal and Installation"

.

NO

>> Repair or replace malfunctioning components.

Component Inspection

INFOID:0000000007818469

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-43, "Diagnosis Procedure"

.

Special Repair Requirement

INFOID:0000000007818452

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-12, "ADJUSTMENT OF STEERING ANGLE SENSOR NEUTRAL

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-13, "CALIBRATION OF DECEL G SENSOR : Description"

.

>> END

ABS actuator and electric unit (control unit)

—

Continuity

Connector

Terminal

E125

16, 47

Ground

Yes

AWFIA0016ZZ

Operation

On

Off

MOTOR RELAY

On

Off

ACTUATOR RLY

On

On

August 2012

2012 Pathfinder

C1143, C1144 STEERING ANGLE SENSOR

BRC-61

< DTC/CIRCUIT DIAGNOSIS >

[TYPE 1]

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C1143, C1144 STEERING ANGLE SENSOR

Description

INFOID:0000000007356741

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:0000000007356742

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-61, "Diagnosis Procedure"

.

NO

>> Inspection End.

Diagnosis Procedure

INFOID:0000000007356743

Regarding Wiring Diagram information, refer to 

BRC-88, "Wiring Diagram - With VQ40DE"

.

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-29, "CONSULT 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

August 2012

2012 Pathfinder

BRC-62

< DTC/CIRCUIT DIAGNOSIS >

[TYPE 1]

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-62, "Component Inspection"

.

Is the inspection result normal?

YES

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

BRC-112, "Removal and Installa-

tion"

.

NO

>> Replace steering angle sensor. Refer to 

BRC-114, "Removal and Installation"

.

Component Inspection

INFOID:0000000007356744

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-114, "Removal and Installation"

.

Special Repair Requirement

INFOID:0000000007818453

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-12, "ADJUSTMENT OF STEERING ANGLE SENSOR NEUTRAL

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 

°

August 2012

2012 Pathfinder

C1143, C1144 STEERING ANGLE SENSOR

BRC-63

< DTC/CIRCUIT DIAGNOSIS >

[TYPE 1]

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

Refer to 

BRC-13, "CALIBRATION OF DECEL G SENSOR : Description"

.

>> END

August 2012

2012 Pathfinder

BRC-64

< DTC/CIRCUIT DIAGNOSIS >

[TYPE 1]

C1155 BRAKE FLUID LEVEL SWITCH

C1155 BRAKE FLUID LEVEL SWITCH

Description

INFOID:0000000007356746

The brake fluid level switch converts the brake fluid level to an electric signal and transmits it to the ABS actu-

ator and electric unit (control unit). 

DTC Logic

INFOID:0000000007356747

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-64, "Diagnosis Procedure"

.

NO

>> Inspection End.

Diagnosis Procedure

INFOID:0000000007356748

Regarding Wiring Diagram information, refer to 

BRC-88, "Wiring Diagram - With VQ40DE"

.

1.

CONNECTOR INSPECTION

1. Disconnect ABS actuator and electric unit (control unit) connector and brake fluid level switch connector. 

2. Check the terminals for deformation, disconnection, looseness or damage.
Is the inspection result normal?

YES

>> GO TO 2

NO

>> Repair or replace as necessary.

2.

CHECK HARNESS BETWEEN BRAKE FLUID LEVEL SWITCH AND ABS ACTUATOR AND ELECTRIC

UNIT (CONTROL UNIT)
1. Check continuity between ABS actuator and electric unit (control

unit) connector E125 (A) terminal 28 and brake fluid level switch

connector E21 (B) terminal 1.

2. Check continuity between ABS actuator and electric unit (control

unit) connector E125 (A) terminal 28 and ground.

DTC

Display item

Malfunction detected condition

Possible cause

C1155

BR FLUID LEVEL LOW

Brake fluid level is low or communication line between 
the ABS actuator and electric unit (control unit) and brake 
fluid level switch is open or shorted.

• Harness or connector
• Brake fluid level switch
• Brake  fluid  level

Self-diagnosis results

BR FLUID LEVEL LOW

ABS actuator and electric unit 

(control unit)

Brake fluid level switch

Continuity

Connector

Terminal

Connector

Terminal

E125 (A)

28

E21 (B)

1

Yes

AWFIA0474ZZ

August 2012

2012 Pathfinder

C1155 BRAKE FLUID LEVEL SWITCH

BRC-65

< DTC/CIRCUIT DIAGNOSIS >

[TYPE 1]

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BRC

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Is the inspection result normal?

YES

>> GO TO 3

NO

>> Repair or replace malfunctioning components.

3.

CHECK BRAKE FLUID LEVEL SWITCH GROUND

Check continuity between brake fluid level switch connector E21 ter-

minal 2 and ground.

Is the inspection result normal?

YES

>> GO TO 4

NO

>> Repair or replace malfunctioning components.

4.

CHECK BRAKE FLUID LEVEL SWITCH

Perform brake fluid level switch component inspection. Refer to 

BRC-65, "Component Inspection"

.

Is the inspection result normal?

YES

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

(control unit). Refer to 

BRC-112, "Removal and Installation"

.

NO

>> Replace brake fluid level switch.

Component Inspection

INFOID:0000000007356749

1.

CHECK BRAKE FLUID LEVEL SWITCH

1. Turn ignition switch OFF.

2. Disconnect brake fluid level switch connector.

3. Check continuity between brake fluid level switch terminals.

Is the inspection result normal?

YES

>> Inspection End.

NO

>> Replace brake fluid level switch.

Special Repair Requirement

INFOID:0000000007818454

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-12, "ADJUSTMENT OF STEERING ANGLE SENSOR NEUTRAL

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-13, "CALIBRATION OF DECEL G SENSOR : Description"

.

ABS actuator and electric unit (control unit)

—

Continuity

Connector

Terminal

E125 (A)

28

Ground

No

Brake fluid level switch

—

Continuity

Connector

Terminal

E21

2

Ground

Yes

AWFIA0026ZZ

Brake fluid level switch terminals

Condition

Continuity

1 

−

 2

Brake fluid reservoir full.

No

Brake fluid reservoir empty.

Yes

ALFIA0026ZZ

August 2012

2012 Pathfinder