Infiniti M45 (Y34). Manual - part 589

 

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Infiniti M45 (Y34). Manual - part 589

 

 

REAR WINDOW DEFOGGER

GW-67

C

D

E

F

G

H

J

K

L

M

A

B

GW

2. 

POWER SUPPLY CIRCUIT INSPECTION (BCM)

1.

Turn ignition switch OFF.

2.

Disconnect the BCM connector M4, check voltage between connector terminal (refer to the “Chart below”)
of the harness connector and ground.

OK or NG?

OK

>> GO TO 3.

NG

>> Check harness for open and short between BCM and fuse.

3. 

GROUND CIRCUIT INSPECTION (BCM)

Check continuity between BCM connector M4 terminals and ground.

OK or NG?

OK

>> System is OK.

NG

>> Repair or replace harness.

Terminals

Power source

Condition

Voltage (V)

(Approx.)

(+)

(–)

Connector

Terminal

(Wire color)

M4

105(Y/L)

Ground

BAT
power supply

Ignition 
switch OFF

Battery 
voltage

68(W/B)

Ground

IGN 
power supply

Ignition 
switch ON

Battery 
voltage

PIIA0206E

56 (B) – Ground

: Continuity should exist.

113 (B) – Ground

: Continuity should exist.

PIIA0170E

GW-68

REAR WINDOW DEFOGGER

CONSULT-II Function

AIS001Q5

CONSULT-II BASIC OPERATION PROCEDURE

1.

Turn ignition switch OFF.

2.

Connect “CONSULT-II” and CONSULT-II CONVERTER to data
link connector.

3.

Turn ignition switch ON.

4.

Touch “START (NISSAN BASED VHCL)”.

5.

Touch “IVMS”on the “SELECT SYSTEM” screen.

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

PBIB1069E

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.

REAR WINDOW DEFOGGER

GW-69

C

D

E

F

G

H

J

K

L

M

A

B

GW

ACTIVE TEST
Display Item List

Trouble Diagnosis Symptom Chart

AIS001O3

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

Rear Window Defogger Switch Circuit Check

AIS001O5

1. 

REAR WINDOW DEFOGGER (MULTIFUNCTION) SWITCH INSPECTION

 With CONSULT-II

Check rear window switch “REAR DEF SW ” in “DATA MONITOR”
mode with CONSULT-II.

 With out CONSULT-II

1.

Turn ignition switch ON.

2.

Check voltage between BCM connector M4 terminal 10(G/R)
and ground.

OK or NG

OK

>> Rear window defogger switch check is OK.

NG

>> GO TO 2.

Test item

Content

REAR DEFOGGER

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

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-69

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

GW-70

3, Replace BCM

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

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 
door mirror defogger operates

1, Driver side door mirror defogger circuit check.

GW-74

Passenger side door mirror defogger does not operated, 
buy door mirror defogger operates.

1, Passenger side door mirror  defogger circuit check.

GW-75

When rear window defogger switch ON

REAR DEF SW

: ON

PIIB0510E

Con-

nector

Terminal

(Wire color)

Condition

Voltage (V)

(Approx.)

(+)

(–)

M4

10 (G/R)

Ground

When rear window defogger 
switch is pressed.

0

When rear window defogger 
switch is OFF.

 5

PIIB0554E

GW-70

REAR WINDOW DEFOGGER

2. 

REAR WINDOW DEFOGGER SWITCH SIGNAL CIRCUIT INSPECTION

1.

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

2.

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

3.

Check continuity between BCM harness connector M4 terminal
10(G/R) 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 multifunction (rear window defogger)
switch connector M83 terminal 2 (B) and ground.

OK or NG

OK

>> Replace multifunction switch.

NG

>> Repair or replace harness between multifunction (rear

window defogger) switch and ground.

Rear Window Defogger and Door Mirror Defogger Circuit Check

AIS001O6

1. 

CHECK FUSE 

1.

Turn ignition switch OFF.

2.

Check if the following fuse for Fuse block (J/B) is blown.

NOTE:
Refer to 

GW-60, "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.

PIIA2886E

COMPONENT PARTS

TERMINAL NO. (SIGNAL)

AMPERE

FUSE NO.

Fuse block (J/B)

2J (IGN power supply)

10A

#1

 

 

 

 

 

 

 

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