Infiniti Q45. Manual - part 620

 

  Index      Infiniti     Infiniti Q45 - service repair manual 2006 year

 

Search            copyright infringement  

 

 

 

 

 

 

 



 

 

Content   ..  618  619  620  621   ..

 

 

Infiniti Q45. Manual - part 620

 

 

REAR WINDOW DEFOGGER

GW-73

C

D

E

F

G

H

J

K

L

M

A

B

GW

4. 

CHECK REAR WINDOW DEFOGGER AND DOOR MIRROR DEFOGGER RELAY GROUND HARNESS

1.

Turn ignition switch ON.

2.

Turn rear window defogger switch OFF.

3.

Installation rear window defogger and door mirror defogger relay.

4.

Check voltage between BCM connector B4 terminal 144 and
ground.

OK or NG

OK

>> GO TO 5.

NG

>> GO TO 6.

5. 

CHECK HARNESS CONTINUITY 

1.

Turn ignition switch OFF.

2.

Disconnect condenser and rear window defogger remove door mirror defogger relay connectors.

3.

Check continuity between condenser B25 terminal 1 and rear
window and door mirror defogger relay connector B8 terminal 7.

OK or NG

OK

>> Check the condition of the harness and the connector.

NG

>> Repair or replace harness. 

6. 

CHECK BCM HARNESS

1.

Turn ignition switch OFF.

2.

Disconnect BCM and rear window defogger and door mirror defogger relay connectors.

3.

Check continuity between BCM connector B4 terminal 144 and
rear window defogger and door mirror defogger relay connector
B8 terminal 2.

OK or NG

OK

>> Check the condition of the harness and the connector.

NG

>> Repair or replace harness.

144 (G/W) – Ground

: Battery voltage

PIIA0211E

1 (LR) – 7 (L/R)

:Continuity should exist.

PIIA3520E

144 (G/W) – 2 (G/W)

:Continuity should exist.

PIIA3516E

GW-74

REAR WINDOW DEFOGGER

Check Rear Window Defogger Circuit

NIS000ZP

1. 

CHECK REAR WINDOW DEFOGGER POWER SUPPLY CIRCUIT 

1.

Turn ignition switch OFF.

2.

Disconnect rear window defogger connector.

3.

Turn ignition switch ON.

4.

Check voltage between rear window defogger connector and ground.

OK or NG

OK

>> GO TO 2.

NG

>> GO TO 3.

2. 

CHECK REAR WINDOW DEFOGGER GROUND HARNESS 

1.

Turn ignition switch OFF.

2.

Check continuity between rear window defogger connector
B421 terminal 1 and ground.

OK or NG

OK

>> Check filament, refer to 

GW-78, "Filament Check"

 .

If filament is OK, check the condition of the harness
and the connector.

If filament is NG, repair filament.

NG

>> Repair or replace harness.

3. 

CHECK CONDENSER POWER SUPPLY CIRCUIT 

1.

Turn ignition switch OFF.

2.

Disconnect condenser connector.

3.

Turn ignition switch ON.

4.

Check voltage between condenser connector and ground.

OK or NG

OK

>> Repair or replace harness.

NG

>> GO TO 4.

Connector

Terminal

(Wire color)

Condition of rear       

window defogger switch

Voltage [V]

(Approx.)

(+)

(–)

B181

2 (B)

Ground

ON

 Battery voltage

OFF

0

PIIA3517E

1 (B) 

 Ground

:Continuity should exist

PIIA3518E

Con-

nector

Terminal

(Wire color)

Condition of rear window 

defogger switch 

Voltage [V]

(Approx.)

(+)

(–)

B25

1 (L/R)

Ground

 ON

 Battery voltage

 OFF

0

PIIA3519E

REAR WINDOW DEFOGGER

GW-75

C

D

E

F

G

H

J

K

L

M

A

B

GW

4. 

CHECK CONDENSER HARNESS

1.

Turn ignition switch OFF.

2.

Disconnect rear window defogger and door mirror defogger relay connector.

3.

Check continuity between condenser connector B25 terminal 1
and rear window defogger and door mirror defogger relay con-
nector B8 terminal 7.

OK or NG

OK 

>> Check the condition of the harness and the connector.

NG

>> Repair or replace harness.

Check Door Mirror Defogger Power Supply Circuit

NIS000ZQ

1. 

CHECK FUSE 

Check if any of the following fuses for Fuse block (J/B) are blown.

NOTE:
Refer to 

GW-61, "Component Parts and Harness Connector Location"

 .

OK or NG

OK

>> GO TO 2.

NG

>> If fuse is blown, make sure to eliminate cause of malfunction before installing new fuse, refer to

PG-2, "POWER SUPPLY ROUTING"

 .

2. 

CHECK DOOR MIRROR DEFOGGER RELAY POWER SUPPLY CIRCUIT 1

1.

Turn ignition switch OFF.

2.

Remove door mirror defogger relay.

3.

Turn ignition switch ON.

4.

Check voltage between door mirror defogger relay connector and ground.

OK or NG

OK

>> GO TO 3.

NG

>> Repair or replace harness.

1 (L/R) – 7 (L/R)

:Continuity should exist.

PIIA3520E

System

Terminal No. 

Power source

Fuse No.

Ampere (A)

Door mirror defogger

3A

ACC power supply

4

10

Connector

Terminal

(Wire color)

Condition of rear 

window defogger 

switch

Voltage [V]

(Approx.)

(+)

(–)

B10

2 (L/R)

Ground

ON

 Battery voltage

OFF

0

PIIA2896E

GW-76

REAR WINDOW DEFOGGER

3. 

CHECK DOOR MIRROR DEFOGGER RELAY 

Check continuity between door mirror defogger relay terminals 3 and 5.

OK or NG

OK

>> GO TO 4.

NG

>> Replace door mirror defogger relay.

4. 

CHECK DOOR MIRROR DEFOGGER RELAY GROUND HARNESS 

1.

Turn ignition switch OFF.

2.

Check continuity between door mirror defogger relay connector
B10 terminal 1 and ground.

OK or NG

OK

>> GO TO 5.

NG

>> Repair or replace harness.

5. 

CHECK DOOR MIRROR DEFOGGER RELAY POWER SUPPLY CIRCUIT 2

Check voltage between door mirror defogger relay connector B10
terminal 5 and ground.

OK or NG

OK

>> GO TO 6.

NG

>> Repair or replace harness.

Terminal

Condition

Continuity

3

5

12V direct current supply 
between terminals 1 to 2

Yes

No current supply

No

PIIA2636E

1 (B) 

 Ground

:Continuity should exist

PIIA2897E

5 (P/B) – Ground

: Battery voltage

PIIA2898E

 

 

 

 

 

 

 

Content   ..  618  619  620  621   ..