Infiniti FX35, FX50 (S51). Manual - part 267

PARKING BRAKE SWITCH

BRC-99

< DTC/CIRCUIT DIAGNOSIS >

[VDC/TCS/ABS]

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PARKING BRAKE SWITCH

Component Function Check

INFOID:0000000005234621

1.

CHECK PARKING BRAKE SWITCH OPERATION

Operate the parking brake pedal. Then check that the brake warning lamp in the combination meter turns ON/
OFF correctly.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Proceed to diagnosis procedure. Refer to 

BRC-99, "Diagnosis Procedure"

.

Diagnosis Procedure

INFOID:0000000005234622

1.

CHECK PARKING BRAKE SWITCH

Check parking brake switch. Refer to 

BRC-99, "Component Inspection"

.

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Replace parking brake switch. Refer to 

PB-5, "Exploded View"

.

2.

CHECK COMBINATION METER

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

MWI-43, "Diagnosis Descrip-

tion"

.

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Repair or replace combination meter.

3.

CHECK DATA MONITOR

Select “ABS”, “DATA MONITOR” and “PARK BRAKE SW” in order with CONSULT-III, and perform the parking
brake switch inspection.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Check unified meter and A/C amp. Refer to 

MWI-45, "CONSULT-III Function (METER/M&A)"

.

Component Inspection

INFOID:0000000005234623

1.

CHECK PARKING BRAKE SWITCH

1.

Turn the ignition switch OFF.

2.

Disconnect parking brake switch harness connector.

3.

Check the continuity between parking brake switch harness connector and ground.

Condition

Brake warning lamp illumination status

When the parking brake pedal is operation

ON

When the parking brake pedal is not oper-
ation.

OFF

Condition

PARK BRAKE SW (DATA MONITOR)

Parking brake switch is active

ON

Parking brake switch is inactive

OFF

Parking brake switch

—

Condition

Continuity

Terminal

1

Ground

When the parking brake switch is operated.

Existed

When the parking brake switch is not operated.

Not existed

BRC-100

< DTC/CIRCUIT DIAGNOSIS >

[VDC/TCS/ABS]

PARKING BRAKE SWITCH

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Replace parking brake switch. Refer to 

PB-5, "Exploded View"

.

VDC OFF SWITCH

BRC-101

< DTC/CIRCUIT DIAGNOSIS >

[VDC/TCS/ABS]

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VDC OFF SWITCH

Description

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VDC OFF switch can deactivate (turn OFF) the VDC/TCS function by pressing the VDC OFF switch.

Component Function Check

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1.

CHECK VDC OFF SWITCH OPERATION

Turn ON/OFF the VDC OFF switch and check that the VDC OFF indicator lamp in the combination meter turns
ON/OFF correctly.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Proceed to diagnosis procedure. Refer to 

BRC-101, "Diagnosis Procedure"

.

Diagnosis Procedure

INFOID:0000000005234626

1.

CHECK VDC OFF SWITCH

Check VDC OFF switch. Refer to 

BRC-102, "Component Inspection"

.

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> VDC OFF switch is malfunctioning. Replace VDC OFF switch.

2.

CHECK VDC OFF SWITCH HARNESS

1.

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

2.

Disconnect VDC OFF switch harness connector.

3.

Check the continuity between VDC OFF switch harness connector and ABS actuator and electric unit
(control unit) connector.

4.

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

5.

Check the continuity between VDC OFF switch harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 3.

NO

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

Condition

VDC OFF indicator lamp illumination status

Press the VDC OFF switch when VDC 
OFF indicator lamp is OFF.

ON

Press the VDC OFF switch when VDC 
OFF indicator lamp is ON.

OFF

ABS actuator and electric unit 

(control unit)

VDC OFF switch

Continuity

Connector

Terminal

Connector

Terminal

E41

31

M19

1

Existed

ABS actuator and electric unit (control unit)

—

Continuity

Connector

Terminal

E41

31

Ground

Not existed

VDC OFF switch

—

Continuity

Connector

Terminal

M19

2

Ground

Existed

BRC-102

< DTC/CIRCUIT DIAGNOSIS >

[VDC/TCS/ABS]

VDC OFF SWITCH

3.

CHECK COMBINATION METER

1.

Connect ABS actuator and electric unit (control unit) harness connector.

2.

Connect VDC OFF switch harness connector.

3.

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

MWI-43, "Diagnosis

Description"

.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Repair or replace combination meter.

Component Inspection

INFOID:0000000005234627

1.

CHECK VDC OFF SWITCH

1.

Turn the ignition switch OFF.

2.

Disconnect VDC OFF switch harness connector.

3.

Check the continuity between VDC OFF switch harness connector terminals.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Replace VDC OFF switch.

VDC OFF switch

Condition

Continuity

Terminal

1 

−

 2

When VDC OFF switch is hold pressed.

Existed

When releasing VDC OFF switch.

Not existed