Infiniti G37 Coupe. Manual - part 275

BRC-74

< COMPONENT DIAGNOSIS >

[VDC/TCS/ABS]

VDC OFF SWITCH

YES

>> GO TO 3.

NO

>> If the open or short in harness, repair or replace harness.

3.

CHECK COMBINATION METER

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

MWI-35, "Diagnosis Descrip-

tion"

.

Is the inspection result normal?

YES

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

NO

>> Repair or replace combination meter.

Component Inspection

INFOID:0000000001635131

1.

CHECK VDC OFF SWITCH

1.

Turn ignition switch OFF.

2.

Disconnect VDC OFF switch connector.

3.

Check continuity between VDC OFF switch connector terminals.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Replace VDC OFF switch.

VDC OFF switch

Condition

Continuity

Connector

Terminal

M19

1 

−

 2

When VDC OFF switch is hold pressed.

Existed

When releasing VDC OFF switch.

Not existed

ABS WARNING LAMP

BRC-75

< COMPONENT DIAGNOSIS >

[VDC/TCS/ABS]

C

D

E

G

H

I

J

K

L

M

A

B

BRC

N

O

P

ABS WARNING LAMP

Description

INFOID:0000000001635132

×

: ON –: OFF

Component Function Check

INFOID:0000000001635133

1.

CHECK ABS WARNING LAMP OPERATION

Check that the lamp illuminates for approximately 1 second after the ignition switch is turned ON.
Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Go to diagnosis procedure. Refer to 

BRC-75, "Diagnosis Procedure"

.

Diagnosis Procedure

INFOID:0000000001635134

1.

CHECK SELF-DIAGNOSIS

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

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-35, "Diagnosis Descrip-

tion"

.

Is the inspection result normal?

YES

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

NO

>> Repair or replace combination meter.

Condition

ABS warning lamp

Ignition switch OFF

–

For 1 second after turning ON ignition switch

×

1 second later after turning ON ignition switch

–

ABS function is malfunctioning.

×

EBD function is malfunctioning.

×

BRC-76

< COMPONENT DIAGNOSIS >

[VDC/TCS/ABS]

BRAKE WARNING LAMP

BRAKE WARNING LAMP

Description

INFOID:0000000001635135

×

: 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:0000000001635136

1.

BRAKE WARNING LAMP OPERATION CHECK 1

Check that the lamp illuminates for approximately 1 second after the ignition switch is turned ON.

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Go to diagnosis procedure. Refer to 

BRC-76, "Diagnosis Procedure"

.

2.

BRAKE WARNING LAMP OPERATION CHECK 2

Check that the brake warning lamp in the combination meter turns ON/OFF correctly when operating the park-
ing brake lever (M/T models) or the parking brake pedal (A/T models).

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Check parking brake switch. Refer to 

BRC-71, "Diagnosis Procedure"

.

Diagnosis Procedure

INFOID:0000000001635137

1.

CHECK PARKING BRAKE SWITCH

Check that the brake warning lamp in the combination meter turns ON/OFF correctly when operating the park-
ing brake lever (M/T models) or the parking brake pedal (A/T models).

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Check parking brake switch. Refer to 

BRC-71, "Diagnosis Procedure"

.

2.

CHECK SELF-DIAGNOSIS

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

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-35, "Diagnosis Descrip-

tion"

.

Is the inspection result normal?

YES

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

NO

>> Repair or replace combination meter.

Condition

Brake warning lamp (Note 1)

Ignition switch OFF

–

For 1 second after turning ignition switch ON

×

 (Note 2)

1 second later after turning ignition switch ON

×

 (Note 2)

EBD function is malfunctioning.

×

VDC OFF INDICATOR LAMP

BRC-77

< COMPONENT DIAGNOSIS >

[VDC/TCS/ABS]

C

D

E

G

H

I

J

K

L

M

A

B

BRC

N

O

P

VDC OFF INDICATOR LAMP

Description

INFOID:0000000001635138

×

: ON –: OFF

Component Function Check

INFOID:0000000001635139

1.

VDC OFF INDICATOR LAMP OPERATION CHECK 1

Check that the lamp illuminates for approximately 1 second after the ignition switch is turned ON.
Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Go to diagnosis procedure. Refer to 

BRC-77, "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-73, "Diagnosis Procedure"

.

Diagnosis Procedure

INFOID:0000000001635140

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-73, "Diagnosis Procedure"

.

2.

CHECK SELF-DIAGNOSIS

Perform ABS actuator and electric unit (control unit) self-diagnosis.
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-35, "Diagnosis Descrip-

tion"

.

Is the inspection result normal?

YES

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

NO

>> Repair or replace combination meter.

Condition

VDC OFF indicator lamp

Ignition switch OFF

–

For 1 second after turning ignition switch ON

×

1 second later after turning ignition switch ON

–

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

×

VDC/TCS function is malfunctioning.

×

ABS function is malfunctioning.

×

EBD function is malfunctioning.

×