Nissan Qashqai J11. Manual - part 1813

FRONT WINDOW DEFOGGER RELAY

DEF-35

< DTC/CIRCUIT DIAGNOSIS >

C

D

E

F

G

H

I

J

K

M

A

B

DEF

N

O

P

Is the inspection result normal?

YES

>> Replace A/C control.

NO

>> Repair or replace harness.

6.

CHECK FRONT WINDOW DEFOGGER RELAY CIRCUIT 4

1.

Turn ignition switch OFF.

2.

Disconnect IPDM E/R connector.

3.

Check continuity between front window defogger relay harness connector and IPDM E/R harness connec-
tor.

Is the inspection result normal?

YES

>> Replace IPDM E/R. Refer to 

PCS-67, "Removal and Installation"

.

NO

>> Repair or replace harness.

Component Inspection

INFOID:0000000010505209

1.

CHECK FRONT WINDOW DEFOGGER RELAY

1.

Turn ignition switch OFF.

2.

Disconnect front window defogger relay.

3.

Check continuity between front window defogger relay terminals.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Replace front window defogger relay.

Front window defogger relay

A/C control

Continuity 

Connector

Terminal

Connector

Terminal

LH

E49

3

M6

7

Existed

RH

E48

6

Front window defogger relay

IPDM E/R

Continuity 

Connector

Terminal

Connector

Terminal

LH

E49

3

F90

101

Existed

RH

E48

Terminal

Condition

Continuity

Front window 

defogger relay

12 V direct current supply between terminals 

 and 

.

Existed

No current supply

Not existed

DEF-36

< DTC/CIRCUIT DIAGNOSIS >

FRONT WINDOW DEFOGGER

FRONT WINDOW DEFOGGER

Diagnosis Procedure

INFOID:0000000010434135

1.

CHECK FRONT WINDOW DEFOGGER POWER SUPPLY CIRCUIT 1

1.

Turn ignition switch OFF.

2.

Disconnect front window defogger connector.

3.

Turn ignition switch ON.

4.

Check voltage between front window defogger harness connector and ground.

Is the inspection result normal?

YES

>> Replace windshield glass.

NO

>> GO TO 2.

2.

CHECK FRONT WINDOW DEFOGGER POWER SUPPLY CIRCUIT 2

1.

Turn ignition switch OFF.

2.

Remove front window defogger relay.

3.

Check continuity between front window defogger harness connector and front window defogger relay har-
ness connector.

LH

RH

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Repair or replace harness.

3.

CHECK INTERMITTENT INCIDENT

Check intermittent incident.
Refer to 

GI-41, "Intermittent Incident"

.

>> INSPECTION END

(+)

(–)

Condition 

Voltage (V)

(Approx.)

Front window defogger

Connector

Terminal 

LH

E45

1

Ground

Front window defogger 
switch

ON

Battery voltage

RH

E44

OFF

0

Front window defogger

Front window defogger relay

Continuity 

 Connector

Terminal

Connector

Terminal

E45

1

E49

2

Existed

Front window defogger

Front window defogger relay

Continuity 

 Connector

Terminal

Connector

Terminal

E44

1

E48

2

Existed

REAR WINDOW DEFOGGER AND DOOR MIRROR DEFOGGERS DO NOT OP-

ERATE.

DEF-37

< SYMPTOM DIAGNOSIS >

C

D

E

F

G

H

I

J

K

M

A

B

DEF

N

O

P

SYMPTOM DIAGNOSIS

REAR WINDOW DEFOGGER AND DOOR MIRROR DEFOGGERS DO NOT
OPERATE.

Diagnosis Procedure

INFOID:0000000010434137

1.

CHECK REAR WINDOW DEFOGGER SWITCH

Check rear window defogger switch.
Refer to 

DEF-23, "Component Function Check"

.

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Repair or replace the malfunctioning parts.

2.

CHECK REAR WINDOW DEFOGGER RELAY

Check rear window defogger relay. 
Refer to 

DEF-25, "Component Function Check"

.

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Repair or replace the malfunctioning parts.

3.

CHECK DOOR MIRROR DEFOGGER

Check door mirror defogger. 
Refer to 

DEF-29, "Component Function Check"

.

Is the inspection result normal?

YES

>> GO TO 4.

NO

>> Repair or replace the malfunctioning parts.

4.

CONFIRM THE OPERATION

Confirm the operation again.
Is the inspection result normal?

YES

>> Check intermittent incident. Refer to 

GI-41, "Intermittent Incident"

.

NO

>> GO TO 1.

DEF-38

< SYMPTOM DIAGNOSIS >

REAR WINDOW DEFOGGER DOES NOT OPERATE BUT BOTH DOOR MIRROR 

DEFOGGERS OPERATE

REAR WINDOW DEFOGGER DOES NOT OPERATE BUT BOTH DOOR
MIRROR DEFOGGERS OPERATE

Diagnosis Procedure

INFOID:0000000010434138

1.

CHECK REAR WINDOW DEFOGGER

Check rear window defogger.
Refer to 

DEF-27, "Component Function Check"

.

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Repair or replace the malfunctioning parts.

2.

CONFIRM THE OPERATION

Confirm the operation again

Is the inspection result normal?

YES

>> Check intermittent incident. Refer to 

GI-41, "Intermittent Incident"

.

NO

>> GO TO 1.