Infiniti M35/M45 Y50. Manual — part 821

REAR WINDOW DEFOGGER

GW-81

C

D

E

F

G

H

J

K

L

M

A

B

GW

CONSULT-II Function (BCM)

NIS0028Q

CONSULT-II can display each diagnostic item using the diagnostic test modes shown following.

CONSULT-II START PROCEDURE

Refer to

GI-38, "CONSULT-II Start Procedure"

DATA MONITOR
Display Item List

ACTIVE TEST
Display Item List

CONSULT-II Function (IPDM E/R)

NIS0028R

CONSULT-II can display each diagnostic item using the diagnostic test mode shown following.

CONSULT-II START PROCEDURE

Refer to

GI-38, "CONSULT-II Start Procedure"

DATA MONITOR

ACTIVE TEST

BCM diagnostic test item

Check item diagnostic

test mode

Content

REAR DEFOGGER

Data monitor

Displays the input data of BCM in real time.

Active test

Gives a drive signal to a load to check the operation.

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.

IPDM E/R diagnostic test

item

Check item diagnostic

test mode

Content

REAR DEFOGGER

Data monitor

Displays the input data of BCM in real time.

Active test

Gives a drive signal to a load to check the operation.

Monitored Item

Description

RR DEF REQ

Indicates [ON/OFF] condition of rear window defogger function by IPDM E/R.

Test Item

Description

REAR DEFOGGER

This test is able to check rear window defogger operation. Rear window defogger operates when
“ON” on CONSULT-II screen is touched.

GW-82

REAR WINDOW DEFOGGER

Work Flow

NIS0022P

1.

Check the symptom and customer's requests.

2.

Understand the outline of system. Refer to

GW-71, "System Description"

.

3.

According to the trouble diagnosis chart, repair or replace the cause of the malfunction. Refer to

GW-82,

"Trouble Diagnoses Symptom Chart"

.

4.

Does rear window defogger operate normally? YES: GO TO 5, NO: GO TO 3.

5.

INSPECTION END.

Trouble Diagnoses Symptom Chart

NIS0022Q

Make sure other systems using the signal of the following systems operate normally.

*1: With navigation system
*2: Without navigation system

Symptom

Diagnoses / Service procedure

Refer to page

Rear window defogger and door mirror defogger do not
operate.

1. Check BCM power supply and ground circuit

GW-83

2. Check IPDM E/R auto active test

PG-23

3. Check rear window defogger switch circuit

GW-84

4. Check rear window defogger power supply circuit

GW-84

5. Replace IPDM E/ R

PG-31

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

1.Check rear window defogger circuit

GW-86

2.Check filament

GW-92

Both of door mirror defogger does not operated but rear
window defogger operates.

Check door mirror defogger power supply circuit

GW-87

Driver side door mirror defogger does not operate.

Check driver side door mirror defogger circuit

GW-89

Passenger side door mirror defogger does not operate.

Check passenger side door mirror defogger circuit

GW-90

Rear window defogger switch does not light, and rear win-
dow defogger is not displayed on the display.
But rear window defogger operates.

Check rear window defogger signal

AV-249

*

1

AV-108

*

2

Rear window defogger switch does not light, but rear win-
dow defogger operates

Replace multi-function switch

ATC-123

REAR WINDOW DEFOGGER

GW-83

C

D

E

F

G

H

J

K

L

M

A

B

GW

Check BCM Power Supply and Ground Circuit

NIS0022R

First perform the “SELF-DIAG RESULTS” in “BCM” with CONSULT-II, when perform the each trouble
diagnosis. Refer to

BCS-13, "CAN Communication Inspection Using CONSULT-II (Self-Diagnosis)"

.

1.

CHECK FUSE

●

Check 15A fuse [No.1, located in the fuse block (J/B)]

●

Check 10A fuse [No.21, located in the fuse block (J/B)]

●

Check 50A fusible link (letter F located in the fuse and fusible link box).

NOTE:
Refer to

GW-71, "Component Parts and Harness Connector Location"

.

OK or NG

OK

>> GO TO 2.

NG

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

PG-3, "POWER SUPPLY ROUTING CIRCUIT"

.

2.

CHECK POWER SUPPLY CIRCUIT

Check voltage between BCM connector and ground.

OK or NG

OK

>> GO TO 3.

NG

>> Check BCM power supply circuit for open or short.

3.

CHECK GROUND CIRCUIT

1.

Turn ignition switch OFF.

2.

Disconnect BCM connector.

3.

Check continuity between BCM connector and ground.

OK or NG

OK

>> Power supply and ground circuit are OK.

NG

>> Check BCM ground circuit for open or short.

Terminals

Condition of

ignition switch

Voltage (V)

(Approx.)

(+)

(–)

BCM connector

Terminal

M1

38

Ground

ON

Battery voltage

M2

42

OFF

55

PIIB5934E

BCM connector

Terminal

Ground

Continuity

M2

52

Yes

PIIB5935E

GW-84

REAR WINDOW DEFOGGER

Check Rear Window Defogger Switch Circuit

NIS0022S

1.

CHECK REAR WINDOW DEFOGGER SWITCH OPERATION

With CONSULT-II

Check (“REAR DEF SW”, “IGN ON SW”) in DATA MONITOR mode with CONSULT-II.

OK or NG

OK

>> Rear window defogger switch is OK.

NG

>> GO TO 2.

2.

CHECK AV LINE

Check AV line. Refer to

AV-249

(with navigation system),

AV-108

(without navigation system).

OK or NG

OK

>> Check the condition of harness and connector.

NG

>> The diagnosis is continued.

Check Rear Window Defogger Power Supply Circuit

NIS0022T

1.

CHECK FUSE

●

Check 10A fuse [No.12, located in the fuse block (J/B)]

●

Check 20A fuse (No.75, located in the IPDM E/R)

●

Check 20A fuse (No.80, located in the IPDM E/R)

NOTE:
Refer to

GW-71, "Component Parts and Harness Connector Location"

.

OK or NG

OK

>> GO TO 2.

NG

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

PG-3, "POWER SUPPLY ROUTING CIRCUIT"

.

2.

CHECK POWER SUPPLY CIRCUIT

1.

Turn ignition switch OFF.

2.

Remove rear window defogger relay.

3.

Turn ignition switch ON.

4.

Check voltage between rear window defogger relay connector and ground.

OK or NG

OK

>> GO TO 3.

NG

>> Repair or replace harness between fuse block (J/B) and rear window defogger relay.

When rear window defogger switch is turned to ON

REAR DEF SW

: ON

When ignition switch is turned to ON

IGN ON SW

: ON

PIIA2373E

Terminals

Voltage (V)

(Approx.)

(+)

(–)

Rear window

defogger relay

connector

Terminal

E36

1

Ground

Battery voltage

3

6

PIIB5994E