Nissan GT-R (2007-2014 year). ENGINE COOLING SYSTEM / DEFOGGER. Service Manual - part 2

REAR WINDOW DEFOGGER SWITCH

DEF-7

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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 

DEF-7, "Diagnosis Procedure"

Diagnosis Procedure

INFOID:0000000009161594

1.

CHECK REAR WINDOW DEFOGGER SWITCH

Does rear window defogger switch operate normally?
• Base audio with navigation system. Refer to 

AV-67, "Symptom Table"

• Bose audio with navigation system. Refer to 

AV-158, "Symptom Table"

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).

Revision: 2012 November

2014 GT-R

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 

DEF-9, "Component Inspection"

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

Revision: 2012 November

2014 GT-R

REAR WINDOW DEFOGGER RELAY

DEF-9

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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

Revision: 2012 November

2014 GT-R

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

Revision: 2012 November

2014 GT-R

REAR WINDOW DEFOGGER

DEF-11

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5.

CHECK REAR WINDOW DEFOGGER CIRCUIT 2

1.

Disconnect fuse block (J/B) connector.

2.

Check continuity between fuse block (J/B) harness connector and condenser harness connector.

3.

Check continuity between fuse block (J/B) harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 6.

NO

>> Repair or replace harness between fuse block (J/B) and condenser.

6.

CHECK FUSE BLOCK (J/B)

1.

Turn ignition switch ON.

2.

Check voltage between fuse block (J/B) (fuse block side) and ground.

Is the inspection result normal?

YES

>> GO TO 8.

NO

>> Replace fuse block (J/B).

7.

CHECK FILAMENT

Check the filament for damage or blown.
Refer to 

DEF-25, "Inspection and Repair"

Is the inspection result normal?

YES

>> GO TO 8.

NO

>> Repair filament.

8.

CHECK INTERMITTENT INCIDENT

Check intermittent incident.
Refer to 

GI-38, "Intermittent Incident"

>> INSPECTION END

Fuse block (J/B)

Condenser

Continuity 

 Connector

Terminal

Connector

Terminal

B6

10G

B33

1

Existed

Fuse block (J/B)

Ground

Continuity 

Connector

Terminal

B6

10G

Not existed

(+)

(–)

Condition

Voltage (V)

(Approx.)

Fuse block (J/B)

Connector

Terminal 

B6

10G

Ground

Rear window defogger switch: ON

Battery voltage

Rear window defogger switch: OFF

0

Revision: 2012 November

2014 GT-R

DEF-12

< DTC/CIRCUIT DIAGNOSIS >

DOOR MIRROR DEFOGGER

DOOR MIRROR DEFOGGER

Diagnosis Procedure

INFOID:0000000009161601

1.

CHECK FUSE

1.

Turn ignition switch OFF.

2.

Check 10A fuse [No.13, 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 FUSE BLOCK (J/B)

1.

Disconnect fuse block (J/B) connector.

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 3.

NO

>> Replace fuse block (J/B).

3.

CHECK INTERMITTENT INCIDENT

Check intermittent incident.
Refer to 

GI-38, "Intermittent Incident"

.

>> INSPECTION END

(+)

(–)

Condition

Voltage (V)

(Approx.)

Fuse block (J/B)

Connector

Terminal

M3

9C

Ground

Rear window defogger switch: ON

Battery voltage

Rear window defogger switch: OFF

0

10C

Rear window defogger switch: ON

Battery voltage

Rear window defogger switch: OFF

0

Revision: 2012 November

2014 GT-R

DRIVER SIDE DOOR MIRROR DEFOGGER

DEF-13

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DRIVER SIDE DOOR MIRROR DEFOGGER

Diagnosis Procedure

INFOID:0000000009161603

1.

CHECK POWER SUPPLY CIRCUIT 

1.

Turn ignition switch OFF.

2.

Disconnect door mirror (driver side) connector. 

3.

Turn ignition switch ON.

4.

Check voltage between door mirror (driver side) harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 4.

NO

>> GO TO 2.

2.

CHECK DRIVER SIDE DOOR MIRROR DEFOGGER CIRCUIT

1.

Turn ignition switch OFF.

2.

Disconnect fuse block (J/B) connector.

3.

Check continuity between fuse block (J/B) harness connector and door mirror (driver side) harness con-
nector.

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Repair or replace harness between fuse block (J/B) and door mirror (driver side).

3.

CHECK FUSE BLOCK (J/B) OUTPUT SIGNAL

1.

Turn ignition switch ON.

2.

Check voltage between fuse block (J/B) harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 5.

NO

>> Replace fuse block (J/B).

4.

CHECK GROUND CIRCUIT

1.

Turn ignition switch OFF.

2.

Check continuity between door mirror (driver side) harness connector and ground.

Is the inspection result normal?

(+)

(–)

Condition 

Voltage (V)

(Approx.)

Door mirror (driver side)

 Connector

Terminal 

D3

1

Ground

Rear window defogger switch: ON

Battery voltage

Rear window defogger switch: OFF

0

Fuse block (J/B)

Door mirror (driver side)

Continuity

 Connector

Terminal 

Connector

Terminal

M3

10C

D3

1

Existed

(+)

(–)

Condition 

Voltage (V)

(Approx.)

Fuse block (J/B)

 Connector

Terminal 

M3

10C

Ground

Rear window defogger switch: ON

Battery voltage

Rear window defogger switch: OFF

0

Door mirror (driver side)

Ground

Continuity 

Connector

Terminal

D3

5

Existed

Revision: 2012 November

2014 GT-R

DEF-14

< DTC/CIRCUIT DIAGNOSIS >

DRIVER SIDE DOOR MIRROR DEFOGGER

YES

>> Replace door mirror glass (driver side). Refer to 

MIR-17, "GLASS MIRROR : Disassembly and

Assembly"

.

NO

>> Repair or replace harness between door mirror (driver side) and ground.

5.

CHECK INTERMITTENT INCIDENT

Check intermittent incident.
Refer to 

GI-38, "Intermittent Incident"

>> INSPECTION END

Revision: 2012 November

2014 GT-R

PASSENGER SIDE DOOR MIRROR DEFOGGER

DEF-15

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PASSENGER SIDE DOOR MIRROR DEFOGGER

Diagnosis Procedure

INFOID:0000000009161605

1.

CHECK POWER SUPPLY CIRCUIT

1.

Turn ignition switch OFF.

2.

Disconnect door mirror (passenger side) connector.

3.

Turn ignition switch ON.

4.

Check voltage between door mirror (passenger side) harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 4.

NO

>> GO TO 2.

2.

CHECK PASSENGER SIDE DOOR MIRROR DEFOGGER CIRCUIT

1.

Turn ignition switch OFF.

2.

Disconnect fuse block (J/B) connector.

3.

Check continuity between fuse block (J/B) harness connector and door mirror (passenger side) harness
connector.

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Repair or replace harness between fuse block (J/B) and door mirror (passenger side). 

3.

CHECK FUSE BLOCK (J/B) OUTPUT SIGNAL

1.

Turn ignition switch ON.

2.

Check voltage between fuse block (J/B) harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 5.

NO

>> Replace fuse block (J/B).

4.

CHECK GROUND CIRCUIT

1.

Turn ignition switch OFF.

2.

Check continuity between door mirror (passenger side) harness connector and ground.

Is the inspection result normal?

(+)

(–)

Condition

Voltage (V)

(Approx.)

Door mirror (Passenger side)

Connector

Terminal 

D33

1

Ground

 Rear window defogger switch: ON

Battery voltage

 Rear window defogger switch: OFF

0

Fuse block (J/B)

Door mirror (passenger side)

Continuity

Connector

Terminal Connector

Terminal

M3

9C

D33

1

Existed

(+)

(–)

Condition

Voltage (V)

(Approx.)

Fuse block (J/B)

Connector

Terminal 

M3

9C

Ground

 Rear window defogger switch: ON

Battery voltage

 Rear window defogger switch: OFF

0

Door mirror (passenger side)

Ground

Continuity 

Connector

Terminal

D33

5

Existed

Revision: 2012 November

2014 GT-R

DEF-16

< DTC/CIRCUIT DIAGNOSIS >

PASSENGER SIDE DOOR MIRROR DEFOGGER

YES

>> Replace door mirror glass (passenger side). Refer to 

MIR-17, "GLASS MIRROR : Disassembly

and Assembly"

.

NO

>> Repair or replace harness between door mirror (passenger side) and ground.

5.

CHECK INTERMITTENT INCIDENT

Check intermittent incident.
Refer to 

GI-38, "Intermittent Incident"

>> INSPECTION END

Revision: 2012 November

2014 GT-R

REAR WINDOW DEFOGGER SYSTEM

DEF-17

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REAR WINDOW DEFOGGER SYSTEM

Wiring Diagram - DEFOGGER SYSTEM -

INFOID:0000000009161606

JCLWA4098GB

Revision: 2012 November

2014 GT-R

DEF-18

< SYMPTOM DIAGNOSIS >

REAR WINDOW DEFOGGER DOES NOT OPERATE

SYMPTOM DIAGNOSIS

REAR WINDOW DEFOGGER DOES NOT OPERATE

Diagnosis Procedure

INFOID:0000000009161612

1.

CHECK POWER SUPPLY AND GROUND CIRCUIT

Check power supply and ground circuit.
Refer to 

DEF-6, "Diagnosis Procedure"

.

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Repair or replace the malfunctioning parts.

2.

CHECK REAR WINDOW DEFOGGER SWITCH

Check rear window defogger switch.
Refer to 

DEF-7, "Component Function Check"

.

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Repair or replace the malfunctioning parts.

3.

CHECK REAR WINDOW DEFOGGER RELAY

Check rear window defogger relay. 
Refer to 

DEF-8, "Diagnosis Procedure"

.

Is the inspection result normal?

YES

>> GO TO 4.

NO

>> Repair or replace the malfunctioning parts.

4.

CHECK REAR WINDOW DEFOGGER

Check rear window defogger.
Refer to 

DEF-10, "Diagnosis Procedure"

.

Is the inspection result normal?

YES

>> GO TO 5.

NO

>> Repair or replace the malfunctioning parts.

5.

CONFIRM THE OPERATION

Confirm the operation again.
Is the inspection result normal?

YES

>> Check intermittent incident. Refer to 

GI-38, "Intermittent Incident"

.

NO

>> GO TO 1.

Revision: 2012 November

2014 GT-R

REAR WINDOW DEFOGGER AND DOOR MIRROR DEFOGGERS DO NOT OP-

ERATE

DEF-19

< SYMPTOM DIAGNOSIS >

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REAR WINDOW DEFOGGER AND DOOR MIRROR DEFOGGERS DO NOT
OPERATE

Diagnosis Procedure

INFOID:0000000009161613

1.

CHECK POWER SUPPLY AND GROUND CIRCUIT

Check power supply and ground circuit.
Refer to 

DEF-6, "Diagnosis Procedure"

.

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Repair or replace the malfunctioning parts.

2.

CHECK REAR WINDOW DEFOGGER SWITCH

Check rear window defogger switch.
Refer to 

DEF-7, "Component Function Check"

.

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Repair or replace the malfunctioning parts.

3.

CHECK REAR WINDOW DEFOGGER RELAY

Check rear window defogger relay. 
Refer to 

DEF-8, "Diagnosis Procedure"

.

Is the inspection result normal?

YES

>> GO TO 4.

NO

>> Repair or replace the malfunctioning parts.

4.

CONFIRM THE OPERATION

Confirm the operation again.

Is the inspection result normal?

YES

>> Check intermittent incident. Refer to 

GI-38, "Intermittent Incident"

.

NO

>> GO TO 1.

Revision: 2012 November

2014 GT-R

DEF-20

< SYMPTOM DIAGNOSIS >

REAR WINDOW DEFOGGER DOES NOT OPERATE BUT BOTH DOOR MIRROR 

DEFOGGERS OPERATE

REAR WINDOW DEFOGGER DOES NOT OPERATE BUT BOTH DOOR
MIRROR DEFOGGERS OPERATE

Diagnosis Procedure

INFOID:0000000009161614

1.

CHECK REAR WINDOW DEFOGGER

Check rear window defogger.
Refer to 

DEF-10, "Diagnosis Procedure"

.

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Repair or replace the malfunctioning parts.

2.

CONFIRM THE OPERATION

Confirm the operation again

Is the inspection result normal?

YES

>> Check intermittent incident. Refer to 

GI-38, "Intermittent Incident"

.

NO

>> GO TO 1.

Revision: 2012 November

2014 GT-R

DOOR MIRROR DEFOGGER DOES NOT OPERATE

DEF-21

< SYMPTOM DIAGNOSIS >

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DOOR MIRROR DEFOGGER DOES NOT OPERATE

BOTH SIDES

BOTH SIDES : Diagnosis Procedure

INFOID:0000000009161615

1.

CHECK DOOR MIRROR DEFOGGER

Check door mirror defogger.
Refer to 

DEF-12, "Diagnosis Procedure"

.

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Repair or replace the malfunctioning parts.

2.

CONFIRM THE OPERATION

Confirm the operation again.
Is the inspection result normal?

YES

>> Check intermittent incident. Refer to 

GI-38, "Intermittent Incident"

.

NO

>> GO TO 1.

DRIVER SIDE

DRIVER SIDE : Diagnosis Procedure

INFOID:0000000009161616

1.

CHECK DRIVER SIDE DOOR MIRROR DEFOGGER 

Check driver side door mirror defogger.
Refer to 

DEF-13, "Diagnosis Procedure"

.

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Repair or replace the malfunctioning parts.

2.

CONFIRM THE OPERATION

Confirm the operation again.

Is the inspection result normal?

YES

>> Check intermittent incident. Refer to 

GI-38, "Intermittent Incident"

.

NO

>> GO TO 1.

PASSENGER SIDE

PASSENGER SIDE : Diagnosis Procedure

INFOID:0000000009161617

1.

CHECK PASSENGER SIDE DOOR MIRROR DEFOGGER.

Check passenger side door mirror defogger.
Refer to 

DEF-15, "Diagnosis Procedure"

.

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Repair or replace the malfunctioning parts.

2.

CONFIRM THE OPERATION

Confirm the operation again.
Is the inspection result normal?

YES

>> Check intermittent incident. Refer to 

GI-38, "Intermittent Incident"

.

NO

>> GO TO 1.

Revision: 2012 November

2014 GT-R

DEF-22

< SYMPTOM DIAGNOSIS >

REAR WINDOW DEFOGGER INDICATOR DOES NOT ILLUMINATE

REAR WINDOW DEFOGGER INDICATOR DOES NOT ILLUMINATE

Diagnosis Procedure

INFOID:0000000009161619

1.

CHECK REAR WINDOW DEFOGGER SWITCH

Check rear window defogger operate.

YES

>> 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).

NO

>> Check rear window defogger system.

Revision: 2012 November

2014 GT-R