Nissan Murano. Manual - 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 

DEF-12, "Diagnosis Procedure"

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 

AV-178, "Description"

.

• With navigation system. Refer to 

AV-315, "Description"

.

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

Refer to 

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 

DEF-14, "Diagnosis Procedure"

.

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 >

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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