Nissan Murano. Instruction — part 329
DEF-12
< DTC/CIRCUIT DIAGNOSIS >
REAR WINDOW DEFOGGER SWITCH
REAR WINDOW DEFOGGER SWITCH
Description
INFOID:0000000009722497
• 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:0000000009722498
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:0000000009722499
WITH BOSE AUDIO SYSTEM
1.
CHECK PRESET SWITCH (REAR WINDOW DEFOGGER SWITCH)
Does preset switch operate normally?
• Without navigation system. Refer to
• With navigation system. Refer to
.
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> Replace preset switch (rear window defogger switch). Refer to
AV-285, "Removal and Installation"
.
(without navigation system) or
AV-457, "Removal and Installation"
(with navigation system).
WITHOUT BOSE AUDIO SYSTEM
1.
CHECK AUTO A/C
Check the operating condition of auto A/C
Does auto A/C operate normally?
YES
>> GO TO 2.
NO
>> Perform auto A/C diagnosis. Refer to
HAC-108, "Diagnosis Chart By Symptom"
2.
CHECK BCM OUTPUT SIGNAL
1.
Turn ignition switch OFF.
2.
Disconnect A/C auto amp. connector.
3.
Turn ignition switch ON.
4.
Check voltage between A/C auto amp. harness connector and ground by oscilloscope.
Is the inspection result normal?
YES
>> GO TO 4.
NO
>> GO TO 3.
3.
CHECK REAR WINDOW DEFOGGER SWITCH CIRCUIT
(+)
(-)
voltage
(Approx.)
A/C auto amp.
Connector
Terminal
M50
27
Ground
JPMIA0012GB
REAR WINDOW DEFOGGER SWITCH
DEF-13
< DTC/CIRCUIT DIAGNOSIS >
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1.
Turn ignition switch OFF.
2.
Disconnect BCM connector.
3.
Check continuity between BCM harness connector and A/C auto amp. harness connector.
4.
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 CONTROL
1.
Turn ignition switch OFF.
2.
Replace A/C control (rear window defogger switch).
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.
REPLACE A/C AUTO AMP.
1.
Turn ignition switch OFF.
2.
Replace A/C auto 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 6.
6.
CHECK INTERMITTENT INCIDENT
GI-44, "Intermittent Incident"
.
Is the inspection result normal?
>> INSPECTION END.
BCM
A/C auto amp.
Continuity
Connector
Terminal
Connector
Terminal
M123
130
M50
27
Existed
BCM
Ground
Continuity
Connector
Terminal
M123
130
Not existed
DEF-14
< DTC/CIRCUIT DIAGNOSIS >
REAR WINDOW DEFOGGER RELAY
REAR WINDOW DEFOGGER RELAY
Description
INFOID:0000000009722500
Power is supplied to the rear window defogger with BCM control.
Component Function Check
INFOID:0000000009722501
1.
CHECK REAR WINDOW DEFOGGER RELAY POWER SUPPLY CIRCUIT
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 relay power supply circuit is OK.
NO
>> Refer to
.
Diagnosis Procedure
INFOID:0000000009722502
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-15, "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-15
< DTC/CIRCUIT DIAGNOSIS >
C
D
E
F
G
H
I
J
K
M
A
B
DEF
N
O
P
5.
CHECK INTERMITTENT INCIDENT
Check intermittent incident.
Refer to
GI-44, "Intermittent Incident"
>> INSPECTION END
Component Inspection
INFOID:0000000009722503
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
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