Infiniti G37 Coupe. Manual - part 347

 

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Infiniti G37 Coupe. Manual - part 347

 

 

DEF-12

< COMPONENT DIAGNOSIS >

REAR WINDOW DEFOGGER RELAY

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) (fuse block side) and ground.

Is the inspection result normal?

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:0000000001696770

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.

Fuse block (J/B)

Ground

Voltage (V)

(Approx.)

 Connector

Terminal 

M2

4B

Ground

Battery voltage

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

REAR WINDOW DEFOGGER

DEF-13

< COMPONENT DIAGNOSIS >

C

D

E

F

G

H

I

J

K

M

A

B

DEF

N

O

P

REAR WINDOW DEFOGGER

Description

INFOID:0000000001696771

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:0000000001696772

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 

DEF-13, "Diagnosis Procedure"

Diagnosis Procedure

INFOID:0000000001696773

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.

Turn ignition switch ON.

2.

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.

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 and rear window defogger connector.

Rear window defogger

Ground

Condition of rear window

 defogger switch

Voltage (V)

(Approx.)

Connector

Terminal 

B401

1

Ground

ON

Battery voltage

OFF

0

Rear window defogger 

Ground

Continuity 

Connector

Terminal

B402

2

Ground

Existed

DEF-14

< COMPONENT DIAGNOSIS >

REAR WINDOW DEFOGGER

3.

Check continuity between condenser (condenser side) and rear window defogger harness connector.

Is the inspection result normal?

YES

>> GO TO 5.

NO

>> Replace condenser. Refer to 

DEF-63, "Removal and Installation"

5.

CHECK REAR WINDOW DEFOGGER CIRCUIT 2

1.

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

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 filament.
Refer to 

DEF-14, "Component Inspection"

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.

Component Inspection

INFOID:0000000001696774

1.

CHECK FILAMENT

Check the filament for damage or blown.
Refer to 

DEF-61, "Inspection and Repair"

Is the inspection result normal?

Condenser

Rear window defogger

Continuity 

 Connector

Terminal

Connector

Terminal

B26

1

B401

1

Existed

Fuse block (J/B)

Condenser

Continuity 

 Connector

Terminal

Connector

Terminal

B6

10G

B26

1

Existed

11G

Fuse block (J/B)

Ground

Condition of rear window

 defogger switch

Voltage (V)

(Approx.)

Connector

Terminal 

B6

10G

Ground

ON

Battery voltage

OFF

0

11G

ON

Battery voltage

OFF

0

REAR WINDOW DEFOGGER

DEF-15

< COMPONENT DIAGNOSIS >

C

D

E

F

G

H

I

J

K

M

A

B

DEF

N

O

P

YES

>> INSPECTION END.

NO

>> Repair filament.

 

 

 

 

 

 

 

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