Infiniti QX56 (Z62). Manual - part 149

C1116 STOP LAMP SWITCH

BRC-81

< DTC/CIRCUIT DIAGNOSIS >

[WITH VDC]

C

D

E

G

H

I

J

K

L

M

A

B

BRC

N

O

P

7.

CHECK STOP LAMP SWITCH CIRCUIT (2)

1.

Turn the ignition switch OFF.

2.

Check 10A fuse (#3).

3.

Disconnect fuse block (J/B) harness connector.

4.

Check fuse block (J/B) pin terminals for damage or loose connection with harness connector.

5.

Check continuity between stop lamp switch harness connector and fuse block (J/B).

Is the inspection result normal?

YES

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

PG-89, "Wiring Diagram - IGNITION

POWER SUPPLY -"

.

NO

>> Repair or replace error-detected parts.

8.

CHECK STOP LAMP SWITCH POWER SUPPLY (3)

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 13.

NO

>> GO TO 9.

9.

CHECK STOP LAMP SWITCH CIRCUIT (3)

1.

Turn the ignition switch OFF.

2.

Disconnect stop lamp switch harness connector.

3.

Check continuity between ABS actuator and electric unit (control unit) harness connector and stop lamp
switch harness connector.

4.

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

Is the inspection result normal?

Stop lamp switch

Fuse block (J/B)

Continuity

Connector

Terminal

Connector

Terminal

E115

3

E103

4F

Existed

ABS actuator and electric unit (control unit)

—

Condition

Voltage

Connector

Terminal

E36

37

Ground

Brake pedal depressed

Approx. 0 V

Brake pedal not depressed

ABS actuator and electric unit (control unit)

—

Condition

Voltage

Connector

Terminal

E36

37

Ground

Brake pedal depressed

Battery voltage

Brake pedal not depressed

Approx. 0 V

ABS actuator and electric unit (control unit)

Stop lamp switch

Continuity

Connector

Terminal

Connector

Terminal

E36

37

E115

2

Existed

ABS actuator and electric unit (control unit)

—

Continuity

Connector

Terminal

E36

37

Ground

Not existed

BRC-82

< DTC/CIRCUIT DIAGNOSIS >

[WITH VDC]

C1116 STOP LAMP SWITCH

YES

>> GO TO 10.

NO

>> Repair or replace error-detected parts.

10.

CHECK STOP LAMP SWITCH

Check stop lamp switch. Refer to 

BRC-85, "Component Inspection (Stop lamp Switch)"

.

Is the inspection result normal?

YES

>> GO TO 11.

NO

>> Repair or replace stop lamp switch. Refer to 

BR-20, "Removal and Installation"

.

11.

CHECK STOP LAMP SWITCH POWER SUPPLY (4)

1.

Check voltage between stop lamp switch harness connector and ground.

2.

Turn the ignition switch ON.

CAUTION:

Never start engine.

3.

Check voltage between stop lamp switch harness connector and ground.

Is the inspection result normal?

YES

>> Check pin terminals and connection of stop lamp switch harness connector for abnormal condi-

tions. Repair or replace error-detected parts.

NO

>> GO TO 12.

12.

CHECK STOP LAMP SWITCH CIRCUIT (4)

1.

Turn the ignition switch OFF.

2.

Check 10A fuse (#7).

3.

Disconnect fuse block (J/B) harness connector.

4.

Check fuse block (J/B) pin terminals for damage or loose connection with harness connector.

5.

Check continuity between stop lamp switch harness connector and fuse block (J/B).

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.

13.

CHECK STOP LAMP RELAY POWER SUPPLY (1)

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.

Stop lamp switch

—

Voltage

Connector

Terminal

E115

1

Ground

Approx. 0 V

Stop lamp switch

—

Voltage

Connector

Terminal

E115

1

Ground

Battery voltage

Stop lamp switch

Fuse block (J/B)

Continuity

Connector

Terminal

Connector

Terminal

E115

1

E103

8F

Existed

ABS actuator and electric unit (control unit)

—

Voltage

Connector

Terminal

E36

46

Ground

Approx. 0 V

C1116 STOP LAMP SWITCH

BRC-83

< 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 18.

NO

>> GO TO 14.

14.

CHECK STOP LAMP RELAY CIRCUIT (1)

1.

Turn the ignition switch OFF.

2.

Disconnect stop lamp relay harness connector.

3.

Check continuity between ABS actuator and electric unit (control unit) harness connector and stop lamp
relay harness connector.

4.

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

Is the inspection result normal?

YES

>> GO TO 15.

NO

>> Repair or replace error-detected parts.

15.

CHECK STOP LAMP RELAY

Check stop lamp relay. Refer to 

BRC-86, "Component Inspection (Stop Lamp Relay)"

.

Is the inspection result normal?

YES

>> GO TO 16.

NO

>> Repair or replace stop lamp relay.

16.

CHECK STOP LAMP RELAY POWER SUPPLY (2)

1.

Turn the ignition switch OFF.

2.

Check voltage between stop lamp relay harness connector and ground.

3.

Turn the ignition switch ON.

CAUTION:

Never start engine.

4.

Check voltage between stop lamp relay harness connector and ground.

Is the inspection result normal?

YES

>> Check pin terminals and connection of stop lamp relay harness connector for abnormal condi-

tions. Repair or replace error-detected parts.

NO

>> GO TO 17.

ABS actuator and electric unit (control unit)

—

Voltage

Connector

Terminal

E36

46

Ground

Battery voltage

ABS actuator and electric unit (control unit)

Stop lamp relay

Continuity

Connector

Terminal

Connector

Terminal

E36

46

E58

2

Existed

ABS actuator and electric unit (control unit)

—

Continuity

Connector

Terminal

E36

46

Ground

Not existed

Stop lamp relay

—

Voltage

Connector

Terminal

E58

1

Ground

Approx. 0 V

Stop lamp relay

—

Voltage

Connector

Terminal

E58

1

Ground

Battery voltage

BRC-84

< DTC/CIRCUIT DIAGNOSIS >

[WITH VDC]

C1116 STOP LAMP SWITCH

17.

CHECK STOP LAMP RELAY CIRCUIT (2)

1.

Turn the ignition switch OFF.

2.

Check 10A fuse (#57).

3.

Disconnect IPDM E/R harness connector.

4.

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

5.

Check continuity between stop lamp relay harness connector and IPDM E/R harness connector.

Is the inspection result normal?

YES

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

PG-89, "Wiring Diagram - IGNITION

POWER SUPPLY -"

.

NO

>> Repair or replace error-detected parts.

18.

CHECK STOP LAMP RELAY POWER SUPPLY (3)

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 stop lamp relay harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 22.

NO

>> GO TO 19.

19.

CHECK STOP LAMP RELAY CIRCUIT (3)

1.

Turn the ignition switch OFF.

2.

Disconnect stop lamp relay harness connector.

3.

Check continuity between ABS actuator and electric unit (control unit) harness connector and stop lamp
relay harness connector.

4.

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

Is the inspection result normal?

YES

>> GO TO 20.

Stop lamp relay

IPDM E/R

Continuity

Connector

Terminal

Connector

Terminal

E58

1

E15

59

Existed

ABS actuator and electric unit (control unit)

—

Voltage

Connector

Terminal

E36

37

Ground

Approx. 0 V

ABS actuator and electric unit (control unit)

—

Condition

Voltage

Connector

Terminal

E36

37

Ground

Brake pedal depressed

Battery voltage

Brake pedal not depressed

Approx. 0 V

ABS actuator and electric unit (control unit)

Stop lamp relay

Continuity

Connector

Terminal

Connector

Terminal

E36

37

E58

5

Existed

ABS actuator and electric unit (control unit)

—

Continuity

Connector

Terminal

E36

37

Ground

Not existed