Nissan Quest E52. Manual - part 252

POWER SUPPLY AND GROUND CIRCUIT

BRC-101

< DTC/CIRCUIT DIAGNOSIS >

[WITH VDC]

C

D

E

G

H

I

J

K

L

M

A

B

BRC

N

O

P

POWER SUPPLY AND GROUND CIRCUIT

Diagnosis Procedure

INFOID:0000000009651424

1.

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

1.

Turn the ignition switch OFF.

2.

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

3.

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

4.

Turn the ignition switch ON

CAUTION:

Never start engine.

5.

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

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> GO TO 2.

2.

CHECK ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT) IGNITION POWER SUPPLY CIRCUIT 

1.

Turn the ignition switch OFF.

2.

Check 10 A fuse (#45).

3.

Disconnect IPDM E/R harness connector.

4.

Check continuity between ABS actuator and electric unit (control unit) harness connector and IPDM E/R
harness connector.

5.

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

Is the inspection result normal?

YES

>> Perform trouble diagnosis for ignition power supply. Refer to 

PG-54, "Wiring Diagram - IGNITION

POWER SUPPLY -"

.

NO

>> Repair or replace error-detected parts.

3.

CHECK MOTOR AND MOTOR RELAY POWER SUPPLY

1.

Turn the ignition switch OFF.

2.

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

ABS actuator and electric unit (control unit)

—

Voltage

Connector

Terminal

E36

20

Ground

Approx. 0 V

ABS actuator and electric unit (control unit)

—

Voltage

Connector

Terminal

E36

20

Ground

10 

−

 16 V

ABS actuator and electric unit (control unit)

IPDM E/R

Continuity

Connector

Terminal

Connector

Terminal

E36

20

E10

25

Existed

ABS actuator and electric unit (control unit)

—

Continuity

Connector

Terminal

E36

20

Ground

Not existed

ABS actuator and electric unit (control unit)

—

Voltage

Connector

Terminal

E36

14

Ground

10 

−

 16 V

BRC-102

< DTC/CIRCUIT DIAGNOSIS >

[WITH VDC]

POWER SUPPLY AND GROUND CIRCUIT

3.

Turn the ignition switch ON.

CAUTION:

Never start engine.

4.

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

Is the inspection result normal?

YES

>> GO TO 5.

NO

>> GO TO 4.

4.

CHECK ABS MOTOR AND MOTOR RELAY POWER SUPPLY CIRCUIT

1.

Turn the ignition switch OFF.

2.

Check 30 A fusible link (#F).

3.

Check continuity and short circuit between ABS actuator and electric unit (control unit) harness connector
terminal (14) and 30 A fusible link (#F).

Is the inspection result normal?

YES

>> Perform trouble diagnosis for battery power supply. Refer to 

PG-11, "Wiring Diagram - BATTERY

POWER SUPPLY -"

.

NO

>> Repair or replace error-detected parts.

5.

CHECK ACTUATOR RELAY, ABS IN VALVE, ABS OUT VALVE, CUT VALVE, SUCTION VALVE POWER

SUPPLY

1.

Turn the ignition switch OFF.

2.

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

3.

Turn the ignition switch ON

CAUTION:

Never start engine.

4.

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

Is the inspection result normal?

YES

>> GO TO 7.

NO

>> GO TO 6.

6.

CHECK ACTUATOR RELAY, ABS IN VALVE, ABS OUT VALVE, CUT VALVE, SUCTION VALVE POWER

SUPPLY CIRCUIT

1.

Turn the ignition switch OFF.

2.

Check 20 A fusible link (#G).

3.

Check continuity and short circuit between ABS actuator and electric unit (control unit) harness connector
terminal (1) and 20 A fusible link (#G).

Is the inspection result normal?

YES

>> Perform trouble diagnosis for battery power supply. Refer to 

PG-11, "Wiring Diagram - BATTERY

POWER SUPPLY -"

.

NO

>> Repair or replace error-detected parts.

7.

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

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

ABS actuator and electric unit (control unit)

—

Voltage

Connector

Terminal

E36

14

Ground

10 

−

 16 V

ABS actuator and electric unit (control unit)

—

Voltage

Connector

Terminal

E36

1

Ground

10 

−

 16 V

ABS actuator and electric unit (control unit)

—

Voltage

Connector

Terminal

E36

1

Ground

10 

−

 16 V

POWER SUPPLY AND GROUND CIRCUIT

BRC-103

< DTC/CIRCUIT DIAGNOSIS >

[WITH VDC]

C

D

E

G

H

I

J

K

L

M

A

B

BRC

N

O

P

Is the inspection result normal?

YES

>> GO TO 8.

NO

>> Repair or replace error-detected parts.

8.

CHECK TERMINAL

1.

Check ABS actuator and electric unit (control unit) pin terminals for damage or loose connection with har-
ness connector.

2.

Check IPDM E/R pin terminals for damage or loose connection with harness connector.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Repair or replace error-detected parts.

ABS actuator and electric unit (control unit)

—

Continuity

Connector

Terminal

E36

13

Ground

Existed

26

BRC-104

< DTC/CIRCUIT DIAGNOSIS >

[WITH VDC]

PARKING BRAKE SWITCH

PARKING BRAKE SWITCH

Component Function Check

INFOID:0000000009651425

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 

BRC-104, "Diagnosis Procedure"

.

Diagnosis Procedure

INFOID:0000000009651426

1.

CHECK PARKING BRAKE SWITCH CIRCUIT

1.

Turn the ignition switch OFF.

2.

Disconnect parking brake switch harness connector. 

3.

Disconnect combination meter harness connector. 

4.

Check continuity between parking brake switch harness connector and combination meter harness con-
nector.

5.

Check continuity between parking brake switch harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Repair or replace error-detected parts.

2.

CHECK PARKING BRAKE SWITCH

Check the parking brake switch. Refer to 

BRC-104, "Component Inspection"

.

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Replace parking brake switch. Refer to 

PB-6, "Removal and Installation"

.

3.

CHECK COMBINATION METER

Check combination meter. Refer to 

MWI-35, "CONSULT Function"

.

Is the inspection result normal?

YES

>> Check each pin terminals for damage or loose connection with harness connector. If any items

are damaged, repair or replace error-detected parts.

NO

>> Repair or replace combination meter. Refer to 

MWI-93, "Removal and Installation"

.

Component Inspection

INFOID:0000000009651427

1.

CHECK PARKING BRAKE SWITCH

1.

Turn the ignition switch OFF.

2.

Disconnect parking brake switch harness connector.

3.

Check continuity between parking brake switch harness connector.

Parking brake switch

Combination meter

Continuity

Connector

Terminal

Connector

Terminal

E27

1

M34

26

Existed

Parking brake switch

—

Continuity

Connector

Terminal

E27

1

Ground

Not existed