Nissan Pathfinder. Manual - part 254

C1121, C1123, C1125, C1127 ABS OUT VALVE SYSTEM

BRC-75

< DTC/CIRCUIT DIAGNOSIS >

[VDC/TCS/ABS]

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C1121, C1123, C1125, C1127 ABS OUT VALVE SYSTEM

DTC Logic

INFOID:0000000009177285

DTC DETECTION LOGIC

DTC CONFIRMATION PROCEDURE

1.

CHECK SELF-DIAGNOSTIC RESULT

With CONSULT.

1. Turn ignition switch OFF to ON.

2. Perform self-diagnostic result.
Is DTC C1121, C1123, C1125 or C1127 detected?

YES

>> Proceed to diagnosis procedure. Refer to 

BRC-75, "Diagnosis Procedure"

.

NO

>> Inspection End.

Diagnosis Procedure

INFOID:0000000009177286

Regarding Wiring Diagram information, refer to 

BRC-44, "Wiring Diagram"

.

1.

CONNECTOR INSPECTION

1. Turn ignition switch OFF.

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

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

YES

>> GO TO 2.

NO

>> Repair or replace as necessary.

2.

CHECK ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT) BATTERY POWER SUPPLY

Check voltage between ABS actuator and electric unit (control unit) connector E125 terminal 3 and ground.

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Repair or replace malfunctioning components.

3.

CHECK ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT) GROUND CIRCUIT

Check continuity between ABS actuator and electric unit (control unit) connector E125 terminals 1, 2 and

ground.

DTC

Display Item

Malfunction detected condition

Possible causes

C1121

FR LH OUT ABS SOL

When a malfunction is detected in front LH ABS OUT 
valve.

• Harness or connector
• ABS actuator and electric unit 

(control unit)

• Fusible link
• Battery power supply system

C1123

FR RH OUT ABS SOL

When a malfunction is detected in front RH ABS OUT 
valve.

C1125

RR LH OUT ABS SOL

When a malfunction is detected in rear LH ABS OUT 
valve.

C1127

RR RH OUT ABS SOL

When a malfunction is detected in rear RH ABS OUT 
valve.

ABS actuator and electric unit (control unit)

—

Voltage

(Approx.)

Connector

Terminal

E125

3

Ground

Battery voltage

BRC-76

< DTC/CIRCUIT DIAGNOSIS >

[VDC/TCS/ABS]

C1121, C1123, C1125, C1127 ABS OUT VALVE SYSTEM

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 malfunctioning components.

ABS actuator and electric unit (control unit)

—

Continuity

Connector

Terminal

E125

1

Ground

Yes

2

C1130 ENGINE SIGNAL

BRC-77

< DTC/CIRCUIT DIAGNOSIS >

[VDC/TCS/ABS]

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C1130 ENGINE SIGNAL

DTC Logic

INFOID:0000000009177287

DTC DETECTION LOGIC

DTC CONFIRMATION PROCEDURE

1.

CHECK SELF-DIAGNOSTIC RESULT

With CONSULT.

1. Turn ignition switch OFF to ON.

2. Perform self-diagnostic result.
Is DTC C1130 detected?

YES

>> Proceed to diagnosis procedure. Refer to 

BRC-77, "Diagnosis Procedure"

.

NO

>> Inspection End.

Diagnosis Procedure

INFOID:0000000009177288

1.

CHECK SELF-DIAGNOSTIC RESULT FOR ENGINE SYSTEM

With CONSULT.

Perform self-diagnostic result. Refer to 

EC-61, "CONSULT Function"

.

Are any ECM DTCs detected?

YES

>> Refer to 

EC-91, "DTC Index"

.

NO

>> GO TO 2.

2.

CHECK SELF-DIAGNOSTIC RESULT FOR ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT)

With CONSULT.

1. Perform self-diagnostic result and erase DTCs.

2. Turn ignition switch OFF.

3. Start engine and drive vehicle for a short period of time.

4. Check that malfunction indicator lamp (MIL) turns OFF.

5. Stop vehicle and perform self-diagnostic result.
Is DTC C1130 detected?

YES

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

BRC-123, "Removal and Installa-

tion"

.

NO

>> Check pin terminals and connection of connectors for abnormal conditions. Repair or replace mal-

functioning components.

DTC

Display Item

Malfunction detected condition

Possible causes

C1130

ENGINE SIGNAL 1

When a malfunction is detected in ECM system.

• ECM
• ABS actuator and electric unit 

(control unit)

• CAN communication line

BRC-78

< DTC/CIRCUIT DIAGNOSIS >

[VDC/TCS/ABS]

C1140 ACTUATOR RELAY SYSTEM

C1140 ACTUATOR RELAY SYSTEM

DTC Logic

INFOID:0000000009177289

DTC DETECTION LOGIC

DTC CONFIRMATION PROCEDURE

1.

CHECK SELF-DIAGNOSTIC RESULT

With CONSULT.

1. Turn ignition switch OFF to ON.

2. Perform self-diagnostic result.
Is DTC C1140 detected?

YES

>> Proceed to diagnosis procedure. Refer to 

BRC-78, "Diagnosis Procedure"

.

NO

>> Inspection End.

Diagnosis Procedure

INFOID:0000000009177290

Regarding Wiring Diagram information, refer to 

BRC-44, "Wiring Diagram"

.

1.

CONNECTOR INSPECTION

1. Turn ignition switch OFF.

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

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

YES

>> GO TO 2.

NO

>> Repair or replace as necessary.

2.

CHECK ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT) BATTERY POWER SUPPLY

Check voltage between ABS actuator and electric unit (control unit) connector E125 terminals 3, 4 and

ground.

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Repair or replace malfunctioning components.

3.

CHECK ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT) GROUND CIRCUIT

Check continuity between ABS actuator and electric unit (control unit) connector E125 terminals 1, 2 and

ground.

DTC

Display Item

Malfunction detected condition

Possible causes

C1140

ACTUATOR RLY

When a malfunction is detected in actuator relay.

• Harness or connector
• ABS actuator and electric unit 

(control unit)

• Fusible link
• Battery power supply system

ABS actuator and electric unit (control unit)

—

Voltage

(Approx.)

Connector

Terminal

E125

3

Ground

Battery voltage

4