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
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
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
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
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