Infiniti QX56 (Z62). Manual — part 379

DEF-26

< DTC/CIRCUIT DIAGNOSIS >

REAR WINDOW DEFOGGER RELAY

REAR WINDOW DEFOGGER RELAY

Description

INFOID:0000000006299436

The rear window defogger is operated by turning the rear window defogger switch ON.

Component Function Check

INFOID:0000000006299437

1.

CHECK FUNCTION

1.

Perform IPDM E/R Active Test (“REAR DEFOGGER”) using CONSULT-III.

2.

Touch “ON”.

3.

Check that the rear window heating wire is getting warmer.

Is the inspection result normal?

YES

>> Rear window defogger relay function is OK.

NO

>> Refer to

DEF-26, "Diagnosis Procedure"

Diagnosis Procedure

INFOID:0000000006299438

1.

CHECK FUSE

1.

Turn ignition switch OFF.

2.

Check the 15A fuse (No. 41, 42 located in IPDM E/R).

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Replace the blown fuse after repairing the affected circuit if a fuse is blown.

2.

CHECK IPDM E/R OUTPUT SIGNAL

1.

Perform IPDM E/R Active Test (“REAR DEFOGGER”) using CONSULT-III.

2.

Touch “ON”.

3.

Check voltage between IPDM E/R harness connector and ground.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Replace IPDM E/R. Refer to

PCS-32, "Removal and Installation"

.

(+)

(

−

)

CONSULT-III Active Test condition

Voltage (V)

(Approx.)

IPDM E/R

Connector

Terminal

E11

14

Ground

REAR DEFOGGER

ON

Battery voltage

OFF

0

REAR WINDOW DEFOGGER

DEF-27

< DTC/CIRCUIT DIAGNOSIS >

C

D

E

F

G

H

I

J

K

M

A

B

DEF

N

O

P

REAR WINDOW DEFOGGER

Description

INFOID:0000000006299439

Heats the heating wire with the power supply from the rear window defogger relay to prevent the rear window
from fogging up.

Component Function Check

INFOID:0000000006299440

1.

CHECK FUNCTION

1.

Perform IPDM E/R Active Test (“REAR DEFOGGER”) using CONSULT-III.

2.

Touch “ON”.

3.

Check that the rear window heating wire is getting warmer.

Is the inspection result normal?

YES

>> Rear window defogger relay function is OK.

NO

>> Refer to

DEF-26, "Diagnosis Procedure"

Diagnosis Procedure

INFOID:0000000006299441

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 harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> GO TO 4.

2.

CHECK REAR WINDOW DEFOGGER GROUND CIRCUIT

1.

Turn ignition switch OFF.

2.

Check continuity between rear window defogger harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Repair or replace harness.

3.

CHECK FILAMENT

Refer to

DEF-43, "Inspection and Repair"

.

Is the inspection result normal?

YES

>> GO TO 5.

NO

>> Repair filament.

4.

CHECK REAR WINDOW DEFOGGER POWER SUPPLY CIRCUIT

1.

Turn ignition switch OFF.

2.

Disconnect IPDM E/R connector.

3.

Check continuity between IPDM E/R harness connector and rear window defogger harness connector.

(+)

(

−

)

Condition

Voltage (V)

(Approx.)

Rear window defogger

Connector

Terminal

D103

1

Ground

Rear window defogger switch

ON

Battery voltage

OFF

0

Rear window defogger

Ground

Continuity

Connector

Terminal

D104

2

Existed

DEF-28

< DTC/CIRCUIT DIAGNOSIS >

REAR WINDOW DEFOGGER

4.

Check continuity between IPDM E/R connector and ground.

Is the inspection result normal?

YES

>> GO TO 5.

NO

>> Repair or replace harness.

5.

CHECK INTERMITTENT INCIDENT

Check intermittent incident.
Refer to

GI-40, "Intermittent Incident"

.

>> INSPECTION END

IPDM E/R

Rear window defogger

Continuity

Connector

Terminal

Connector

Terminal

E11

14

D103

1

Existed

IPDM E/R

Ground

Continuity

Connector

Terminal

E11

14

Not existed

DOOR MIRROR DEFOGGER

DEF-29

< DTC/CIRCUIT DIAGNOSIS >

C

D

E

F

G

H

I

J

K

M

A

B

DEF

N

O

P

DOOR MIRROR DEFOGGER

Description

INFOID:0000000006299442

Heats the heating wire with the power supply from the rear window defogger relay to prevent the door mirror
from fogging up.

Component Function Check

INFOID:0000000006299443

1.

CHECK DOOR MIRROR DEFOGGER

1.

Perform IPDM E/R Active Test (“REAR DEFOGGER”) using CONSULT-III.

2.

Touch “ON”.

3.

Check that both side door mirror glasses are getting warmer.

Is the inspection result normal?

YES

>> Door mirror defogger is OK.

NO

>> Refer to

DEF-29, "Diagnosis Procedure"

Diagnosis Procedure

INFOID:0000000006299444

1.

CHECK FUSE

1.

Turn ignition switch OFF.

2.

Check 10A fuse [No.80, located in fuse block (J/B)].

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Replace the blown fuse after repairing the affected circuit if a fuse is blown.

2.

CHECK DOOR MIRROR DEFOGGER CIRCUIT

1.

Disconnect IPDM E/R connector and door mirror (both sides) connector.

2.

Check continuity between IPDM E/R harness connector and door mirror (driver side) harness connector.

3.

Check continuity between IPDM E/R harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Repair or replace harness.

3.

CHECK INTERMITTENT INCIDENT

Check intermittent incident.
Refer to

GI-40, "Intermittent Incident"

.

>> INSPECTION END

IPDM E/R

Door mirror (driver side)

Continuity

Connector

Terminal

Connector

Terminal

E11

14

D3

7

Existed

IPDM E/R

Ground

Continuity

Connector

Terminal

E11

14

Not existed