Infiniti EX35. Manual - part 335

 

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Infiniti EX35. Manual - part 335

 

 

C1121, C1123, C1125, C1127 OUT ABS SOL

BRC-55

< COMPONENT DIAGNOSIS >

[VDC/TCS/ABS]

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C1121, C1123, C1125, C1127 OUT ABS SOL

Description

INFOID:0000000003430130

The solenoid valve increases, holds or decreases the fluid pressure of each brake caliper according to the sig-
nals transmitted by the ABS actuator and electric unit (control unit). 

DTC Logic

INFOID:0000000003132919

DTC DETECTION LOGIC

DTC CONFIRMATION PROCEDURE

1.

DTC REPRODUCTION PROCEDURE

1.

Turn the ignition switch ON.

2.

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

Is DTC “C1121”, “C1123”, “C1125” or “C1127” detected?

YES

>> Proceed to diagnosis procedure. Refer to 

BRC-55, "Diagnosis Procedure"

.

NO

>> INSPECTION END

Diagnosis Procedure

INFOID:0000000003430131

1.

CHECK CONNECTOR

1.

Turn the ignition switch OFF.

2.

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

3.

Check terminal for deformation, disconnection, looseness, etc.

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Repair or replace damaged parts.

2.

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

Check the voltage between ABS actuator and electric unit (control unit) harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Repair or replace damaged parts.

3.

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

Check the continuity between ABS actuator and electric unit (control unit) harness connector and ground.

DTC

Display item

Malfunction detected condition

Possible cause

C1121

FR LH OUT ABS SOL

When the control unit detects a malfunction in the front 
LH outlet solenoid circuit.

ABS actuator and electric unit 
(control unit)

C1123

FR RH OUT ABS SOL

When the control unit detects a malfunction in the front 
RH outlet solenoid circuit.

C1125

RR LH OUT ABS SOL

When the control unit detects a malfunction in the rear LH 
outlet solenoid circuit.

C1127

RR RH OUT ABS SOL

When the control unit detects a malfunction in the rear 
RH outlet solenoid circuit.

ABS actuator and electric unit (control unit)

Voltage

Connector

Terminal

E41

3

Ground

Battery voltage

BRC-56

< COMPONENT DIAGNOSIS >

[VDC/TCS/ABS]

C1121, C1123, C1125, C1127 OUT ABS SOL

Is the inspection result normal?

YES

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

NO

>> Repair or replace damaged parts.

Component Inspection

INFOID:0000000003430132

1.

CHECK ACTIVE TEST

1.

Select each test menu item on ”ACTIVE TEST“.

2.

On the display, touch “Up”, “Keep” and “Down”, and check that the system operates as shown in the table
below.

*: On for 1 to 2 seconds after the touch, and then Off.

NOTE:

A brief moment of On/Off condition occurs every 20 seconds after ignition switch turned ON. This is not malfunction because it is
an operation for checking.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Proceed to diagnosis procedure. Refer to 

BRC-55, "Diagnosis Procedure"

.

Special Repair Requirement

INFOID:0000000003430140

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-8, "ADJUSTMENT OF STEERING ANGLE SENSOR NEU-

TRAL POSITION : Description"

.

>> END

ABS actuator and electric unit (control unit)

Continuity

Connector

Terminal

E41

1

Ground

Existed

4

Test item

Display item

Display (Note)

Up

Keep

Down

FR RH SOL

FR RH IN SOL

Off

On

On

FR RH OUT SOL

Off

Off

On*

USV[FR-RL]

Off

Off

Off

HSV[FR-RL]

Off

Off

Off

FR LH SOL

FR LH IN SOL

Off

On

On

FR LH OUT SOL

Off

Off

On*

USV[FL-RR]

Off

Off

Off

HSV[FL-RR]

Off

Off

Off

RR RH SOL

RR RH IN SOL

Off

On

On

RR RH OUT SOL

Off

Off

On*

USV[FL-RR]

Off

Off

Off

HSV[FL-RR]

Off

Off

Off

RR LH SOL

RR LH IN SOL

Off

On

On

RR LH OUT SOL

Off

Off

On*

USV[FR-RL]

Off

Off

Off

HSV[FR-RL]

Off

Off

Off

C1130 ENGINE SIGNAL

BRC-57

< COMPONENT DIAGNOSIS >

[VDC/TCS/ABS]

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C1130 ENGINE SIGNAL

Description

INFOID:0000000003132923

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

DTC Logic

INFOID:0000000003132924

DTC DETECTION LOGIC

DTC CONFIRMATION PROCEDURE

1.

DTC REPRODUCTION PROCEDURE

1.

Turn the ignition switch ON.

2.

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

Is DTC “C1130” detected?

YES

>> Proceed to diagnosis procedure. Refer to 

BRC-57, "Diagnosis Procedure"

.

NO

>> INSPECTION END

Diagnosis Procedure

INFOID:0000000003132925

1.

ECM SELF-DIAGNOSIS

Perform ECM self-diagnosis.

Is any item indicated on the self-diagnosis display?

YES

>> Check the malfunctioning system.

NO

>> GO TO 2.

2.

ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT) SELF-DIAGNOSIS

1.

Erase ABS actuator and electric unit (control unit) self-diagnosis results.

2.

Turn the ignition switch OFF.

3.

Start the engine. Drive the vehicle for a while.

4.

Make sure that malfunction indicator lamp (MIL) turns OFF.

5.

Stop the engine. Perform ABS actuator and electric unit (control unit) self-diagnosis.

Is any item indicated on the self-diagnosis display?

YES

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

NO

>> Check ABS actuator and electric unit (control unit) pin terminals for damage or loose connection

with harness connector. If any items and damaged, repair or replace damaged parts.

Special Repair Requirement

INFOID:0000000003430142

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-8, "ADJUSTMENT OF STEERING ANGLE SENSOR NEU-

TRAL POSITION : Description"

.

>> END

DTC

Display item

Malfunction detected condition

Possible cause

C1130

ENGINE SIGNAL 1

Major engine components are malfunctioning.

• Harness or connector
• ABS actuator and electric unit 

(control unit)

• ECM
• CAN communication line

BRC-58

< COMPONENT DIAGNOSIS >

[VDC/TCS/ABS]

C1142 PRESS SENSOR

C1142 PRESS SENSOR

Description

INFOID:0000000003132931

The pressure sensor converts the brake fluid pressure to an electric signal and transmits it to the ABS actuator
and electric unit (control unit). [The pressure sensor is integrated in the ABS actuator and electric unit (control
unit).]

DTC Logic

INFOID:0000000003132932

DTC DETECTION LOGIC

DTC CONFIRMATION PROCEDURE

1.

DTC REPRODUCTION PROCEDURE

1.

Turn the ignition switch ON.

2.

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

Is DTC “C1142” detected?

YES

>> Proceed to diagnosis procedure. Refer to 

BRC-58, "Diagnosis Procedure"

.

NO

>> INSPECTION END

Diagnosis Procedure

INFOID:0000000003132933

1.

CHECK STOP LAMP SWITCH

Check stop lamp switch. Refer to 

BRC-51, "Diagnosis Procedure"

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Repair or replace malfunction component.

2.

CHECK DATA MONITOR

Check pressure sensor signal. Refer to 

BRC-58, "Component Inspection"

.

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> • Check brake pedal, brake booster, and master cylinder for mount play, looseness, brake system

fluid leakage, etc.

- Brake pedal: Refer to 

BR-7, "Inspection and Adjustment"

.

- Brake booster: Refer to 

BR-13, "Inspection"

.

- Master cylinder: Refer to 

BR-12, "Inspection"

.

3.

ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT) SELF-DIAGNOSIS

Perform ABS actuator and electric unit (control unit) self-diagnosis.
Is any item indicated on the self-diagnosis display?

YES

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

NO

>> Check ABS actuator and electric unit (control unit) pin terminals for damage or loose connection

with harness connector. If any items are damaged, repair or replace damaged parts.

Component Inspection

INFOID:0000000003132934

1.

CHECK DATA MONITOR

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

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
• Stop lamp switch
• ABS actuator and electric unit 

(control unit)

 

 

 

 

 

 

 

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