Nissan Murano Z51. Manual — part 355
REAR WINDOW DEFOGGER SWITCH
DEF-11
< DTC/CIRCUIT DIAGNOSIS >
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DEF
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REAR WINDOW DEFOGGER SWITCH
Description
INFOID:0000000005513197
• The rear window defogger is operated by turning the rear window defogger switch ON.
• The indicator lamp in the rear window defogger illuminates when the rear window defogger is operating.
Component Function Check
INFOID:0000000005513198
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:0000000005513199
WITH BOSE AUDIO SYSTEM
1.
CHECK PRESET SWITCH (REAR WINDOW DEFOGGER SWITCH)
Does preset switch operate normally?
• Without navigation system. Refer to
AV-74, "Diagnosis Description"
.
• With navigation system. Refer to
AV-587, "Diagnosis Description"
.
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> Replace preset switch (rear window defogger switch). Refer to
AV-547, "Removal and Installation"
.
(without navigation system) or
AV-797, "Removal and Installation"
(with navigation system).
WITHOUT BOSE AUDIO SYSTEM
1.
CHECK A/C CONTROL (REAR WINDOW DEFOGGER SWITCH)
Check A/C control. Refer to
.
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> Replace A/C control. Refer to
DEF-12
< DTC/CIRCUIT DIAGNOSIS >
REAR WINDOW DEFOGGER RELAY
REAR WINDOW DEFOGGER RELAY
Description
INFOID:0000000005513200
Power is supplied to the rear window defogger with BCM control.
Component Function Check
INFOID:0000000005513201
1.
CHECK REAR WINDOW DEFOGGER RELAY POWER SUPPLY CIRCUIT
1.
Perform Active Test (“REAR DEFOGGER”) with CONSULT-III.
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 is OK.
NO
>> Refer to
Diagnosis Procedure
INFOID:0000000005513202
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 RELAY CIRCUIT
1.
Turn ignition switch ON.
2.
Check voltage between BCM harness connector and ground.
Is the inspection result normal?
YES
>> GO TO 5.
NO
>> GO TO 3.
3.
CHECK FUSE BLOCK (J/B)
Check voltage between fuse block (J/B) connector and ground.
Is the inspection result normal?
YES
>> Repair or replace harness or connector between BCM and fuse block (J/B).
NO
>> GO TO 4.
4.
CHECK REAR WINDOW DEFOGGER RELAY
Check rear window defogger relay.
Refer to
DEF-13, "Component Inspection"
Is the inspection result normal?
YES
>> Replace fuse block (J/B).
NO
>> Replace rear window defogger relay.
(+)
(-)
Condition of rear window defog-
ger switch
Voltage (V)
(Approx.)
BCM
Connector
Terminal
M123
151
Ground
ON 0
OFF
Battery voltage
Fuse block (J/B)
Ground
Voltage (V)
(Approx.)
Connector
Terminal
M2
4B
Battery voltage
REAR WINDOW DEFOGGER RELAY
DEF-13
< DTC/CIRCUIT DIAGNOSIS >
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5.
CHECK INTERMITTENT INCIDENT
Check intermittent incident.
Refer to
GI-39, "Intermittent Incident"
>> INSPECTION END
Component Inspection
INFOID:0000000005513203
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.
Terminal
Condition
Continuity
Rear window
defogger relay
3
5
12 V direct current supply between termi-
nals 1 and 2.
Existed
No current supply
Not existed
SEF497Y
DEF-14
< DTC/CIRCUIT DIAGNOSIS >
REAR WINDOW DEFOGGER
REAR WINDOW DEFOGGER
Description
INFOID:0000000005513204
Heats the heating wire with the power supply from the rear window defogger relay to prevent the rear window
from fogging up.
Component Function Check
INFOID:0000000005513205
1.
CHECK REAR WINDOW DEFOGGER
1.
Perform Active Test (“REAR DEFOGGER”) with CONSULT-III.
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:0000000005513206
1.
CHECK FUSE
1.
Turn ignition switch OFF.
2.
Check the following.
-
20A fuse (No.14, located in fuse block (J/B)
-
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 9.
NO
>> Repair or replace harness or connector between rear window defogger and ground.
4.
CHECK REAR WINDOW DEFOGGER CIRCUIT 1
(+)
(-)
Condition of rear window
defogger switch
Voltage (V)
(Approx.)
Rear window defogger
Connector
Terminal
D184
1
Ground
ON
Battery voltage
OFF
0
Rear window defogger
Ground
Continuity
Connector
Terminal
D185
2
Existed
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