Nissan Qashqai J11. Manual — part 1810

REAR WINDOW DEFOGGER SWITCH

DEF-23

< DTC/CIRCUIT DIAGNOSIS >

C

D

E

F

G

H

I

J

K

M

A

B

DEF

N

O

P

DTC/CIRCUIT DIAGNOSIS

REAR WINDOW DEFOGGER SWITCH

Component Function Check

INFOID:0000000010434117

1.

CHECK REAR WINDOW DEFOGGER SWITCH FUNCTION

Check that the indicator lamp of rear window defogger illuminates when rear window defogger switch ON.

Is the inspection result normal?

YES

>> Rear window defogger switch function is OK.

NO

>> Refer to

DEF-23, "Diagnosis Procedure"

Diagnosis Procedure

INFOID:0000000010434118

1.

CHECK A/C TYPE

Check A/C type.

Automatic A/C>>GO TO 2.
Except for automatic A/C>>GO TO 5.

2.

CHECK INTEGRAL SWITCH (REAR WINDOW DEFOGGER SWITCH)

Perform ON BOARD SELF-DIAGNOSIS of A/C control.
Refer to

HAC-45, "Diagnosis Description"

.

Is the inspection result normal?

YES

>> GO TO 4.

NO

>> GO TO 3.

3.

REPLACE A/C CONTROL

1.

Turn ignition switch OFF.

2.

Replace A/C control (rear window defogger switch). Refer to

HAC-126, "Removal and Installation"

.

3.

Turn ignition switch ON.

4.

Operate rear window defogger switch and check the operating condition.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> GO TO 4.

4.

REPLACE A/C AUTO AMP.

1.

Turn ignition switch OFF.

2.

Replace A/C auto amp. Refer to

HAC-127, "Removal and Installation"

.

3.

Turn ignition switch ON.

4.

Operate rear window defogger switch and check the operating condition.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> GO TO 6.

5.

REPLACE A/C AMP.

1.

Turn ignition switch OFF.

2.

Replace A/C amp. Refer to

HAC-222, "Removal and Installation"

(For models with manual A/C) or

HAC-

289, "Removal and Installation"

(For models with manual heater).

3.

Turn ignition switch ON.

4.

Operate rear window defogger switch and check the operating condition.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> GO TO 6.

6.

CHECK INTERMITTENT INCIDENT

Refer to

GI-41, "Intermittent Incident"

.

DEF-24

< DTC/CIRCUIT DIAGNOSIS >

REAR WINDOW DEFOGGER SWITCH

Is the inspection result normal?

>> INSPECTION END

REAR WINDOW DEFOGGER RELAY

DEF-25

< DTC/CIRCUIT DIAGNOSIS >

C

D

E

F

G

H

I

J

K

M

A

B

DEF

N

O

P

REAR WINDOW DEFOGGER RELAY

Component Function Check

INFOID:0000000010434119

1.

CHECK REAR WINDOW DEFOGGER RELAY POWER SUPPLY CIRCUIT

1.

Perform BCM Active Test (“REAR DEFOGGER”) with CONSULT.

2.

Touch “ON”.

3.

Check that the rear window heating wire is getting warmer.

Is the inspection result normal?

YES

>> Rear window defogger relay power supply circuit is OK.

NO

>> Refer to

DEF-25, "Diagnosis Procedure"

Diagnosis Procedure

INFOID:0000000010434120

1.

CHECK REAR WINDOW DEFOGGER CIRCUIT 1

1.

Turn ignition switch ON.

2.

Check voltage between BCM harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 5.

NO-1

>> Fixed at 0 V and remains unchanged: GO TO 2.

NO-2

>> Fixed at 9 – 16 V and remains unchanged: Replace BCM. Refer to

BCS-132, "Removal and

Installation"

.

2.

CHECK REAR WINDOW DEFOGGER CIRCUIT 2

1.

Turn ignition switch OFF.

2.

Disconnect BCM connector and fuse block (J/B) connector.

3.

Check continuity between BCM harness connector and fuse block (J/B) harness connector.

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Repair or replace harness.

3.

CHECK REAR WINDOW DEFOGGER RELAY1

Check rear window defogger relay.
Refer to

DEF-26, "Component Inspection"

.

Is the inspection result normal?

YES

>> GO TO 4.

NO

>> Replace rear window defogger relay.

4.

CHECK FUSE BLOCK (J/B)

1.

Install the rear window defogger relay.

2.

Turn ignition switch ON.

3.

Check voltage between fuse block (J/B) (fuse block side) and ground.

(+)

(-)

Condition

Voltage (V)

BCM

Connector

Terminal

M70

64

Ground

Rear window defogger switch

ON

0 – 0.5

OFF

9 – 16

BCM

Fuse block (J/B)

Continuity

Connector

Terminal

Connector

Terminal

M70

64

M76

6B

Existed

DEF-26

< DTC/CIRCUIT DIAGNOSIS >

REAR WINDOW DEFOGGER RELAY

Is the inspection result normal?

YES

>> GO TO 6.

NO

>> Repair or replace fuse block (J/B).

5.

CHECK REAR WINDOW DEFOGGER RELAY2

1.

Turn ignition switch OFF.

2.

Check rear window defogger relay. Refer to

DEF-26, "Component Inspection"

.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Replace rear window defogger relay.

6.

CHECK INTERMITTENT INCIDENT

Refer to

GI-41, "Intermittent Incident"

.

Is the inspection result normal?

>> INSPECTION END

Component Inspection

INFOID:0000000010434121

1.

CHECK REAR WINDOW DEFOGGER RELAY

1.

Turn ignition switch OFF.

2.

Disconnect rear window defogger relay.

3.

Check continuity between rear window defogger relay terminals.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Replace rear window defogger relay.

(+)

(-)

Voltage (V)

(Approx.)

Fuse block (J/B)

Connector

Terminal

M76

6B

Ground

Battery voltage

Terminal

Condition

Continuity

Rear window

defogger relay

12 V direct current supply between termi-

nals

and .

Existed

No current supply

Not existed

SEF497Y