Infiniti Q45. Manual - part 618

REAR WINDOW DEFOGGER

GW-65

C

D

E

F

G

H

J

K

L

M

A

B

GW

TIWM1393E

GW-66

REAR WINDOW DEFOGGER

TIWM1561E

REAR WINDOW DEFOGGER

GW-67

C

D

E

F

G

H

J

K

L

M

A

B

GW

Terminals and Reference Value for BCM

NIS000ZI

Work Flow

NIS000ZJ

1.

Check the symptom and customer's requests.

2.

Understand the outline of system. Refer to 

GW-61, "System Description"

 .

3.

The preliminary check. Refer to 

GW-67, "Preliminary Check"

 .

4.

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

GW-70,

"Trouble Diagnoses Symptom Chart"

 .

5.

Does rear defogger operate normally? 
OK: GO TO 6.
NG:  GO TO 4.

6.

Inspection end.

Preliminary Check

NIS000ZK

POWER SUPPLY AND GROUND CIRCUIT INSPECTION

1. 

FUSE INSPECTION

●

Check that any of the following fuses in the BCM is blown.

NOTE:
Refer to 

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

 .

OK or NG

OK

>> GO TO 2.

NG

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

PG-2,

"POWER SUPPLY ROUTING"

 .

Terminal

Wire 

color

Signal name

Signal

input/

output

CONDITION

VOLTAGE [V]

(Approx.)

Ignition 

switch

Operation or condition

10

BR

Rear defogger switch signal

Input

ON

Rear defogger switch ON
(With the switch pressed)

0

Rear defogger switch OFF

5

56

B

Ground

–

ON

–

0

68

W/B

Ignition switch (ON)

Input

ON

Ignition switch (ON or 
START position)

Battery voltage

105

Y/L

Power source (Fuse)

Input

OFF

–

Battery voltage

113

B

Ground

–

ON

–

0

144

G/W

Rear window defogger and door 
mirror defogger relay control sig-
nal

Output

ON

Rear defogger switch ON

0

Rear defogger switch OFF

Battery voltage

Unit

Terminal NO.

Power source

Fuse NO.

BCM

105

BAT power supply

3

68

IGN power supply

1

GW-68

REAR WINDOW DEFOGGER

2. 

POWER SUPPLY CIRCUIT INSPECTION (BCM)

1.

Turn ignition switch OFF.

2.

Disconnect the BCM connector.

3.

Check voltage between BCM connector and ground.

OK or NG

OK

>> GO TO 3.

NG

>> Repair or replace harness between BCM and fuse.

3. 

GROUND CIRCUIT INSPECTION (BCM)

Check continuity between BCM connector M4 terminals 56, 113 and
ground.

OK or NG

OK

>> Power supply and ground circuit are OK.

NG

>> Repair or replace harness.

CONSULT-II Function

NIS000ZL

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)”.

Terminals

Condition of 

ignition switch

Voltage [V]

(Approx.)

(+)

(–)

Connector

Terminal

(Wire color)

M4

105(Y/L)

Ground

 OFF

Battery 
voltage

68(W/B)

 ON

PIIA0206E

56 (B) – Ground

:Continuity should exist.

113 (B) – Ground

:Continuity should exist.

PIIA0170E

PBIB1069E

BCIA0029E