Nissan Quest E52. Instruction — part 317
DEF-22
< DTC/CIRCUIT DIAGNOSIS >
REAR WINDOW DEFOGGER SWITCH
Is the inspection result normal?
YES
>> GO TO 4.
NO
>> GO TO 3.
3.
CHECK REAR WINDOW DEFOGGER SWITCH CIRCUIT
1.
Disconnect BCM connector.
2.
Check continuity between BCM harness connector and A/C amp. harness connector.
3.
Check continuity between BCM harness connector and ground.
Is the inspection result normal?
YES
>> Replace BCM. Refer to
BCS-98, "Removal and Installation"
NO
>> Repair or replace harness.
4.
REPLACE A/C AMP.
1.
Turn ignition switch OFF.
2.
Replace A/C amp.
3.
Turn ignition switch ON.
4.
Operate rear window defogger switch and check the operating condition.
Is the inspection result normal?
YES
>> INSPECTION END.
NO
>> GO TO 5.
5.
CHECK INTERMITTENT INCIDENT
GI-42, "Intermittent Incident"
Is the inspection result normal?
>> INSPECTION END
(+)
(-)
Voltage
(Approx.)
A/C amp.
Connector
Terminal
M49
27
Ground
JPMIA0012GB
BCM
A/C amp.
Continuity
Connector
Terminal
Connector
Terminal
M121
15
M49
27
Existed
BCM
Ground
Continuity
Connector
Terminal
M121
15
Not existed
REAR WINDOW DEFOGGER RELAY
DEF-23
< DTC/CIRCUIT DIAGNOSIS >
C
D
E
F
G
H
I
J
K
M
A
B
DEF
N
O
P
REAR WINDOW DEFOGGER RELAY
Component Function Check
INFOID:0000000009650824
1.
CHECK REAR WINDOW DEFOGGER RELAY POWER SUPPLY CIRCUIT
1.
Perform BCM Active Test (“REAR DEFOGGER”) with CONSULT.
2.
Touch “ON”.
3.
Check that the rear window heating wire is getting warmer.
Is the inspection result normal?
YES
>> Rear window defogger relay power supply circuit function is OK.
NO
>> Refer to
.
Diagnosis Procedure
INFOID:0000000009650825
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
>> GO TO 6.
Fixed at 0 V>>GO TO 3.
Fixed at 9
−
16 V >>Replace BCM. Refer to
BCS-98, "Removal and Installation"
.
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
Check rear window defogger relay.
Refer to
DEF-24, "Component Inspection"
.
Is the inspection result normal?
YES
>> GO TO 5.
NO
>> Replace rear window defogger relay.
5.
CHECK FUSE BLOCK (J/B)
(+)
(–)
Condition
Voltage (V)
(Approx.)
BCM
Connector
Terminal
M121
1
Ground
Rear window de-
fogger switch
ON 0
OFF
Battery voltage
BCM
Fuse block (J/B)
Continuity
Connector
Terminal
Connector
Terminal
M121
1
M2
4B
Existed
DEF-24
< DTC/CIRCUIT DIAGNOSIS >
REAR WINDOW DEFOGGER RELAY
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?
YES
>> GO TO 7.
NO
>> Replace fuse block (J/B).
6.
CHECK REAR WINDOW DEFOGGER RELAY 2
Check rear window defogger relay.
Refer to
DEF-24, "Component Inspection"
Is the inspection result normal?
YES
>> GO TO 7.
NO
>> Replace rear window defogger relay.
7.
CHECK INTERMITTENT INCIDENT
Check intermittent incident.
Refer to
GI-42, "Intermittent Incident"
>> INSPECTION END
Component Inspection
INFOID:0000000009650826
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.
(+)
(–)
Voltage (V)
(Approx.)
Fuse block (J/B)
Connector
Terminal
M2
4B
Ground
Battery voltage
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
REAR WINDOW DEFOGGER
DEF-25
< DTC/CIRCUIT DIAGNOSIS >
C
D
E
F
G
H
I
J
K
M
A
B
DEF
N
O
P
REAR WINDOW DEFOGGER
Component Function Check
INFOID:0000000009650827
1.
CHECK REAR WINDOW DEFOGGER
1.
Perform Active Test (“REAR DEFOGGER”) with CONSULT.
2.
Touch “ON”.
3.
Check that the rear window heating wire is getting warmer.
Is the inspection result normal?
YES
>> Rear window defogger is OK.
NO
>> Refer to
.
Diagnosis Procedure
INFOID:0000000009650828
1.
CHECK FUSE
1.
Turn ignition switch OFF.
2.
Check 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.
Disconnect rear window defogger harness connector.
2.
Turn ignition switch ON.
3.
Check voltage between rear window defogger 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.
Check continuity between rear window defogger harness connector and ground.
Is the inspection result normal?
YES
>> GO TO 6.
NO
>> Repair or replace harness or connector between rear window defogger and ground.
4.
CHECK REAR WINDOW DEFOGGER CIRCUIT
1.
Turn ignition switch OFF.
2.
Disconnect fuse block (J/B) harness connector.
3.
Check continuity between fuse block (J/B) harness connector and rear window defogger harness connec-
tor.
(+)
(-)
Condition
Voltage (V)
(Approx.)
Rear window defogger
Connector
Terminal
D184
1
Ground
Rear window defogger
switch
ON
Battery voltage
OFF
0
Rear window defogger
Ground
Continuity
Connector
Terminal
D185
2
Existed
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