Nissan GT-R. Manual - part 70

REAR WINDOW DEFOGGER

DEF-11

< DTC/CIRCUIT DIAGNOSIS >

C

D

E

F

G

H

I

J

K

M

A

B

DEF

N

O

P

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

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

DRIVER SIDE DOOR MIRROR DEFOGGER

DEF-13

< DTC/CIRCUIT DIAGNOSIS >

C

D

E

F

G

H

I

J

K

M

A

B

DEF

N

O

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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

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