Nissan GT-R. Instruction — part 69
REAR WINDOW DEFOGGER SWITCH
DEF-7
< DTC/CIRCUIT DIAGNOSIS >
C
D
E
F
G
H
I
J
K
M
A
B
DEF
N
O
P
REAR WINDOW DEFOGGER SWITCH
Component Function Check
INFOID:0000000009161593
1.
CHECK REAR WINDOW DEFOGGER SWITCH FUNCTION
Check that the indicator lamp of rear window defogger illuminates when rear window defogger switch ON.
Is the inspection result normal?
YES
>> Rear window defogger switch function is OK.
NO
>> Refer to
Diagnosis Procedure
INFOID:0000000009161594
1.
CHECK REAR WINDOW DEFOGGER SWITCH
Does rear window defogger switch operate normally?
• Base audio with navigation system. Refer to
• Bose audio with navigation system. Refer to
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> Replace preset switch (rear window defogger switch). Refer to
AV-87, "Removal and Installation"
(Base audio with navigation) or
AV-180, "Removal and Installation"
(Bose audio with navigation).
DEF-8
< DTC/CIRCUIT DIAGNOSIS >
REAR WINDOW DEFOGGER RELAY
REAR WINDOW DEFOGGER RELAY
Diagnosis Procedure
INFOID:0000000009161596
1.
CHECK FUSE
1.
Turn ignition switch OFF.
2.
Check 10A fuse [No.3, located in fuse block (J/B)].
Is the inspection result normal?
YES
>> GO TO 2.
NO
>> Replace the blown fuse after repairing the affected circuit if a fuse is blown.
2.
CHECK REAR WINDOW DEFOGGER CIRCUIT 1
1.
Turn ignition switch ON.
2.
Check voltage between BCM harness connector and ground.
Is the inspection result normal?
YES
>> Rear window defogger power supply circuit is OK.
NO
>> GO TO 3.
3.
CHECK REAR WINDOW DEFOGGER CIRCUIT 2
1.
Turn ignition switch OFF.
2.
Disconnect BCM connector and fuse block (J/B).
3.
Check continuity between BCM harness connector and fuse block (J/B) harness connector.
Is the inspection result normal?
YES
>> GO TO 4.
NO
>> Repair or replace harness.
4.
CHECK REAR WINDOW DEFOGGER RELAY
1.
Disconnect rear window defogger relay,
2.
Check rear window defogger relay.
Refer to
Is the inspection result normal?
YES
>> GO TO 5.
NO
>> Replace rear window defogger relay.
5.
CHECK FUSE BLOCK (J/B)
1.
Install the rear window defogger relay.
2.
Turn ignition switch ON.
3.
Check voltage between fuse block (J/B) connector (fuse block side) and ground.
Is the inspection result normal?
(+)
(–)
Condition
Voltage (V)
(Approx.)
BCM
Connector
Terminal
M123
151
Ground
Rear window defogger switch: ON
0
Rear window defogger switch: OFF
Battery voltage
BCM
Fuse block (J/B)
Continuity
Connector
Terminal
Connector
Terminal
M123
151
M2
4B
Existed
(+)
(–)
Voltage (V)
(Approx.)
Fuse block (J/B)
Connector
Terminal
M2
4B
Ground
Battery voltage
REAR WINDOW DEFOGGER RELAY
DEF-9
< DTC/CIRCUIT DIAGNOSIS >
C
D
E
F
G
H
I
J
K
M
A
B
DEF
N
O
P
YES
>> GO TO 6.
NO
>> Replace fuse block (J/B).
6.
CHECK INTERMITTENT INCIDENT
Check intermittent incident.
Refer to
GI-38, "Intermittent Incident"
>> INSPECTION END
Component Inspection
INFOID:0000000009161597
1.
CHECK REAR WINDOW DEFOGGER RELAY
1.
Turn ignition switch OFF.
2.
Disconnect rear window defogger relay.
3.
Check rear window defogger relay.
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> Replace rear window defogger relay.
Rear window
defogger relay
Condition
Continuity
Terminal
3
5
12 V direct current supply between termi-
nals 1 and 2.
Existed
No current supply
Not existed
SEF497Y
DEF-10
< DTC/CIRCUIT DIAGNOSIS >
REAR WINDOW DEFOGGER
REAR WINDOW DEFOGGER
Diagnosis Procedure
INFOID:0000000009161599
1.
CHECK FUSE
1.
Turn ignition switch OFF.
2.
Check the following.
-
20A fuse [No.15, located in fuse block (J/B)]
Is the inspection result normal?
YES
>> GO TO 2.
NO
>> Replace the blown fuse after repairing the affected circuit if a fuse is blown.
2.
CHECK POWER SUPPLY CIRCUIT
1.
Turn ignition switch ON.
2.
Check voltage between rear window defogger harness connector and ground.
Is the inspection result normal?
YES
>> GO TO 3.
NO
>> GO TO 4.
3.
CHECK GROUND CIRCUIT
1.
Turn ignition switch OFF.
2.
Disconnect rear window defogger connector.
3.
Check continuity between rear window defogger harness connector and ground.
Is the inspection result normal?
YES
>> GO TO 7.
NO
>> Repair or replace harness between rear window defogger and ground.
4.
CHECK REAR WINDOW DEFOGGER CIRCUIT 1
1.
Turn ignition switch OFF.
2.
Disconnect condenser connector.
3.
Check continuity between condenser harness connector and rear window defogger harness connector.
4.
Check continuity between condenser harness connector and ground.
Is the inspection result normal?
YES
>> GO TO 5.
NO
>> Repair or replace harness between condenser and rear window defogger.
(+)
(–)
Condition
Voltage (V)
(Approx.)
Rear window defogger
Connector
Terminal
B471
1
Ground
Rear window defogger switch: ON
Battery voltage
Rear window defogger switch: OFF
0
Rear window defogger
Ground
Continuity
Connector
Terminal
B472
2
Existed
Condenser
Rear window defogger
Continuity
Connector
Terminal
Connector
Terminal
B33
1
B471
1
Existed
Condenser
Ground
Continuity
Connector
Terminal
B33
1
Not existed
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