Infiniti QX56 (JA60). Manual - part 142

VDC OFF SWITCH

BRC-81

< COMPONENT DIAGNOSIS >

[VDC/TCS/ABS]

C

D

E

G

H

I

J

K

L

M

A

B

BRC

N

O

P

Check continuity between VDC OFF switch connector M253 terminal

2 and ground.

Is the inspection result normal?

YES

>> GO TO 4

NO

>> Repair or replace harness.

4.

CHECK COMBINATION METER

Check if the indication and operation of combination meter are normal. Refer to 

MWI-22, "Diagnosis Descrip-

tion"

.

Is the inspection result normal?

YES

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

BRC-116, "Removal and Installa-

tion"

.

NO

>> Replace combination meter. Refer to 

MWI-100, "Removal and Installation"

.

Component Inspection

INFOID:0000000005148068

INSPECTION PROCEDURE

1.

CHECK VDC OFF SWITCH

1. Turn ignition switch OFF.

2. Disconnect VDC OFF switch connector.

3. Check continuity between VDC OFF switch terminals.

Is the inspection result normal?

YES

>> Inspection End

NO

>> Replace VDC OFF switch.

Special Repair Requirement

INFOID:0000000005194924

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-8, "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-9, "CALIBRATION OF DECEL G SENSOR : Description"

.

>> END

VDC OFF switch

—

Continuity

Connector

Terminal

M253

2

Ground

Yes

AWFIA0031ZZ

VDC OFF switch

Condition

Continuity

Terminal

1 

− 2

When VDC OFF switch is pressed.

Yes

When VDC OFF switch is released.

No

AWFIA0446ZZ

BRC-82

< COMPONENT DIAGNOSIS >

[VDC/TCS/ABS]

ABS WARNING LAMP

ABS WARNING LAMP

Description

INFOID:0000000005148069

×: ON –: OFF

Component Function Check

INFOID:0000000005148070

1.

CHECK ABS WARNING LAMP OPERATION

Check that the lamp illuminates for approximately 2 seconds after the ignition switch is turned ON.
Is the inspection result normal?

YES

>> Inspection End

NO

>> Go to diagnosis procedure. Refer to 

BRC-82, "Diagnosis Procedure"

.

Diagnosis Procedure

INFOID:0000000005148071

1.

CHECK SELF-DIAGNOSIS

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

BRC-23, "CONSULT-III Function

(ABS)"

.

Is the inspection result normal?

YES

>> GO TO 2

NO

>> Check items displayed by self-diagnosis.

2.

CHECK COMBINATION METER

Check if the indication and operation of combination meter are normal. Refer to 

MWI-22, "Diagnosis Descrip-

tion"

.

Is the inspection result normal?

YES

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

BRC-116, "Removal and Installa-

tion"

.

NO

>> Replace combination meter. Refer to 

MWI-100, "Removal and Installation"

.

Special Repair Requirement

INFOID:0000000005194925

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-8, "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-9, "CALIBRATION OF DECEL G SENSOR : Description"

.

>> END

Condition

ABS warning lamp

Ignition switch OFF

–

For 2 seconds after turning ON ignition switch

×

2 seconds later after turning ON ignition switch

–

ABS function is malfunctioning.

×

EBD function is malfunctioning.

×

BRAKE WARNING LAMP

BRC-83

< COMPONENT DIAGNOSIS >

[VDC/TCS/ABS]

C

D

E

G

H

I

J

K

L

M

A

B

BRC

N

O

P

BRAKE WARNING LAMP

Description

INFOID:0000000005148072

×: ON –: OFF

NOTE:
• 1: Brake warning lamp will turn on in case of parking brake operation (when switch is ON) or of brake fluid level switch operation

(when brake fluid is insufficient).

• 2: After starting engine, brake warning lamp is turned off.

Component Function Check

INFOID:0000000005148073

1.

BRAKE WARNING LAMP OPERATION CHECK

Check that the lamp illuminates after the ignition switch is turned ON, and turns OFF after the engine is

started.
Is the inspection result normal?

YES

>> Inspection End

NO

>> Go to diagnosis procedure. Refer to 

BRC-83, "Diagnosis Procedure"

.

Diagnosis Procedure

INFOID:0000000005148074

1.

CHECK SELF-DIAGNOSIS

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

BRC-23, "CONSULT-III Function

(ABS)"

.

Is the inspection result normal?

YES

>> GO TO 2

NO

>> Check items displayed by self-diagnosis.

2.

CHECK COMBINATION METER

Check if the indication and operation of combination meter are normal. Refer to 

MWI-22, "Diagnosis Descrip-

tion"

.

Is the inspection result normal?

YES

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

BRC-116, "Removal and Installa-

tion"

.

NO

>> Replace combination meter. Refer to 

MWI-100, "Removal and Installation"

.

Special Repair Requirement

INFOID:0000000005194926

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-8, "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-9, "CALIBRATION OF DECEL G SENSOR : Description"

.

>> END

Condition

Brake warning lamp (Note 1)

Ignition switch OFF

–

Ignition switch ON

× (Note 2)

EBD function is malfunctioning.

×

BRC-84

< COMPONENT DIAGNOSIS >

[VDC/TCS/ABS]

VDC OFF INDICATOR LAMP

VDC OFF INDICATOR LAMP

Description

INFOID:0000000005148075

×: ON –: OFF

Component Function Check

INFOID:0000000005148076

1.

VDC OFF INDICATOR LAMP OPERATION CHECK 1

Check that the lamp illuminates for approximately 2 seconds after the ignition switch is turned ON.
Is the inspection result normal?

YES

>> GO TO 2

NO

>> Go to diagnosis procedure. Refer to 

BRC-84, "Diagnosis Procedure"

.

2.

VDC OFF INDICATOR LAMP OPERATION CHECK 2

Check that the VDC OFF indicator lamp in the combination meter turns ON/OFF correctly when operating the

VDC OFF switch.
Is the inspection result normal?

YES

>> Inspection End

NO

>> Check VDC OFF switch. Refer to 

BRC-80, "Diagnosis Procedure"

.

Diagnosis Procedure

INFOID:0000000005148077

1.

CHECK VDC OFF SWITCH

Check that the VDC OFF indicator lamp in the combination meter turns ON/OFF correctly when operating the

VDC OFF switch.
Is the inspection result normal?

YES

>> GO TO 2

NO

>> Check VDC OFF switch. Refer to 

BRC-80, "Diagnosis Procedure"

.

2.

CHECK SELF-DIAGNOSIS

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

BRC-23, "CONSULT-III Function

(ABS)"

.

Is the inspection result normal?

YES

>> GO TO 3

NO

>> Check items displayed by self-diagnosis.

3.

CHECK COMBINATION METER

Check if the indication and operation of combination meter are normal. Refer to 

MWI-22, "Diagnosis Descrip-

tion"

.

Is the inspection result normal?

YES

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

BRC-116, "Removal and Installa-

tion"

.

NO

>> Replace combination meter. Refer to 

MWI-100, "Removal and Installation"

.

Condition

VDC OFF indicator lamp

Ignition switch OFF

–

For 2 seconds after turning ON ignition switch

×

2 seconds later after turning ON ignition switch

–

VDC OFF switch turned ON. (VDC function is OFF.)

×

VDC/TCS function is malfunctioning.

×

ABS function is malfunctioning.

×

EBD function is malfunctioning.

×