Infiniti F50. Manual - part 599

REAR WINDOW DEFOGGER

GW-67

C

D

E

F

G

H

J

K

L

M

A

B

GW

3.

Turn ignition switch “ON”.

4.

Touch “START(NISSAN BASED VHCL)”.

5.

Touch “IVMS”on the “SELECT SYSTEM” screen.
If  “BCM” is not indicated, go to Refer to 

GI-38

 ,“CONSULT-II

Date Link Connector (DLC) Circuit”.

6.

Check the model specification, and touch either “WITH SUN-
ROOF” or "WITHOUT SUNROOF” on the “SELECT SYS
COND" screen.

7.

Touch "OK". If the selection is wrong, touch “CANCEL”.

8.

Select the desired part to be diagnosed on the "SELECT TEST
ITEM" screen.

DATA MONITOR
Display Item List

ACTIVE TEST
Display Item List

MBIB0233E

PIIA0183E

PIIA0184E

Monitor item “Operation”

Content

REAR DEF SW

“ON/OFF”

Displays “Press (ON)/others (OFF)” status determined with the rear window defogger 
switch.

IGN ON SW

“ON/OFF”

Displays “IGN (ON)/OFF” status determined with the ignition switch signal.

Test item

Content

REAR DEFOGGER

Gives a drive signal to the rear window defogger to activate it.

GW-68

REAR WINDOW DEFOGGER

Trouble Diagnoses Symptom Chart

EIS003SY

●

Check that other systems using the signal of the following systems operate normally.

Rear Window Defogger Switch Circuit Check.

EIS003SZ

1. 

CHECK REAR WINDOW DEFOGGER (MULTI–FUNCTION) SWITCH 

 With CONSULT-II

Check rear window defogger switch “REAR DEF SW” in the “DATA MONITOR” mode with CONSULT-II, 
Refer to 

GW-67

 .

 With out CONSULT-II

1.

Turn ignition switch ON.

2.

Check voltage between BCM connector and ground.

OK or NG

OK

>> Rear window defogger switch is OK.

NG

>> GO TO 2

Symptom

Diagnoses / service procedure

Refer to page

Rear window defogger and door mirror defogger do not 
operate.

1.  Rear window defogger switch circuit check.

GW-68

2.  Rear window defogger and door mirror defogger relay 
circuit check.

GW-69

Rear window defogger does not operate but door mirror 
defogger operate.

1.  Rear window defogger circuit check.

GW-72

2.  Filament check.

GW-76

Door mirror defogger does not operated, but rear win-
dow defogger operates.

1.  Door mirror defogger power supply circuit check.

GW-73

Driver side door mirror defogger does not operated,
but other defogger operates.

1.  Driver side door mirror defogger circuit check.

GW-75

Passenger side door mirror defogger does not operated,
but other defogger operates.

1.  Passenger side door mirror  defogger circuit check.

GW-76

When rear window defogger switch ON

REAR DEF SW

:ON

PIIA0209E

Connector

Terminal

(Wire color)

Condition

Voltage [V]

(Approx)

(+)

(–)

M4

10 (G/R)

Ground

Rear window defogger 
switch is ON.
(With the switch pressed)

0

Rear window defogger 
switch is OFF.

 5

PIIA2884E

REAR WINDOW DEFOGGER

GW-69

C

D

E

F

G

H

J

K

L

M

A

B

GW

2. 

REAR WINDOW DEFOGGER SWITCH SIGNAL CIRCUIT INSPECTION

1.

Turn ignition switch OFF.

2.

Disconnect BCM and multifunction switch (rear window defogger with) connectors.

3.

Check continuity between BCM connector M4 terminal 10 and multifunction switch (rear defogger switch)
connector M83 terminal 5.

4.

Check continuity between BCM harness connector M4 terminal
10 and ground

OK or NG

OK

>> GO TO 3.

NG

>> Repair or replace harness between BCM and multifunc-

tion switch (rear window defogger switch).

3. 

MULTIFUNCTION (REAR WINDOW DEFOGGER) SWITCH GROUND HARNESS INSPECTION

Check continuity between multi-function switch (rear window defogger switch) connector M83 terminal 2 and
ground.

OK or NG

OK

>> Replace multi function switch.

NG

>> Repair or replace harness between multifunction switch

(rear window defogger switch) and ground.

Rear Window Defogger and Door Mirror Defogger Circuit Check

EIS003T0

1. 

CHECK FUSE 

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

NOTE:
Refer to

GW-59, "Component Parts and Harness Connector Location"

 .

OK or NG

OK

>> GO TO 2.

NG

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

PG-2,

"POWER SUPPLY ROUTING"

 .

10 (G/R) – 5(G/R) 

:Continuity should exist

10 (G/R) – Ground 

:Continuity should not exist

PIIA2885E

2(B) 

−

 ground

:Continuity should exist

PIIA3514E

System

Terminal No. (signal)

Power source

Fuse No.

Ampere (A)

Rear defogger

8H

BAT power supply

#10

20

3H

BAT power supply

#11

20

2J

IGN power supply

#1

10

GW-70

REAR WINDOW DEFOGGER

2. 

CHECK REAR WINDOW DEFOGGER AND DOOR MIRROR DEFOGGER RELAY POWER SUPPLY 

CIRCUIT 

1.

Turn ignition switch OFF.

2.

Disconnect rear window defogger and door mirror defogger relay.

3.

Check voltage between rear window defogger and door mirror defogger relay connector B8 terminal 1, 3,
6 and ground.

OK or NG

OK

>> GO TO 3.

NG

>> Check harness for open or short between rear window defogger and door mirror defogger relay

and fuse.

3. 

REAR WINDOW DEFOGGER AND DOOR MIRROR DEFOGGER RELAY INSPECTION

 With CONSULT-II

1.

Connect the rear window defogger and door mirror defogger relay.

2.

Check rear window defogger and door mirror defogger relay  “REAR DEFOGGER RLY” in the ACTIVE
TEST mode with CONSULT-II, Refer to 

GW-67

 , check the operation. 

 Without CONSULT-II

Check continuity between terminals 3 and 5, 6 and 7.

OK or NG

OK

>> GO TO 4.

NG

>> Replace rear window defogger and door mirror defogger relay.

Connector

Terminals (Wire color)

Power source

Condition

Voltage [V]

(Approx.)

(+)

(–)

B8

1 (W/G)

Ground

IGN 
power supply

Ignition 
switch OFF

Battery
voltage

3 (R/B)

BAT
power supply

Ignition 
switch ON

6 (L)

BAT 
power supply

Ignition 
switch OFF

PIIB0316E

The operation sound of rear defogger relay is 
confirmed.

PIIA0208E

Terminal

Condition

Continuity

3

5

12V direct current supply 
between terminals 1 to 2

Should exist

No current supply

Should not exist

6

7

12V direct current supply 
between terminals 1 to 2

Should exist

No current supply

Should not exist

SEC202B