Nissan Tiida C11. Manual - part 141

DEF-12

< COMPONENT DIAGNOSIS >

REAR WINDOW DEFOGGER RELAY

REAR WINDOW DEFOGGER RELAY

Description

INFOID:0000000001697551

Power is supplied to the rear window defogger with BCM control.

Component Function Check

INFOID:0000000001697552

1.

 CHECK REAR WINDOW DEFOGGER RELAY POWER SUPPLY CIRCUIT

Check that an operation noise of rear window defogger relay [located in fuse block (J/B)] can be heard when
turning the rear window defogger switch ON.
Is the inspection result normal?

YES

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

NO

>> Refer to 

DEF-12, "Diagnosis Procedure"

.

Diagnosis Procedure

INFOID:0000000001697553

1.

 CHECK REAR WINDOW DEFOGGER RELAY GROUND CIRCUIT

1.

Turn ignition switch ON.

2.

Check voltage between BCM connector and ground.

Is the inspection result normal?

YES

>> Rear window defogger power supply circuit is OK.

NO

>> GO TO 2

2.

 CHECK HARNESS CONTINUITY

1.

Turn ignition switch OFF.

2.

Disconnect BCM and fuse block (J/B).

3.

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

Is the inspection result normal?

YES

>> GO TO 3

NO

>> Repair or replace harness.

3.

 CHECK REAR WINDOW DEFOGGER RELAY

Check rear window defogger relay.
Refer to 

DEF-13, "Component Inspection"

.

Is the inspection result normal?

YES

>> GO TO 4

NO

>> Replace rear window defogger relay.

4.

 CHECK INTERMITTENT INCIDENT

Check intermittent incident.
Refer to 

XX-XX, "*****"

Is the inspection result normal?

YES

>>

Check the following.

Terminals

Condition of rear 

window defogger 

switch

Voltage (V)

(Approx.)

(+)

(–)

BCM connector

Terminal 

M18

59

Ground

ON 0

OFF

Battery voltage

ALLIA0175ZZ

BCM connector

Terminal

Fuse block (J/B) 

connector

Terminal

Continuity 

M18 (A)

59

M4 (B)

4Q

Yes

ALLIA0176ZZ

REAR WINDOW DEFOGGER RELAY

DEF-13

< COMPONENT DIAGNOSIS >

C

D

E

F

G

H

I

J

K

M

A

B

DEF

N

O

P

• Battery power supply circuit.
• Fuse block (J/B).

NO

>> Repair or replace the malfunctioning parts.

Component Inspection

INFOID:0000000001697554

1.

 CHECK REAR WINDOW DEFOGGER RELAY

Check rear window defogger relay.

Is the inspection result normal?

YES

>> Inspection End.

NO

>> Replace rear window defogger relay.

Terminal

Condition

Continuity

Rear window 

defogger relay

3

5

12V direct current supply between termi-
nals 1 and 2.

Yes

No current supply

No

SEF497Y

DEF-14

< COMPONENT DIAGNOSIS >

REAR WINDOW DEFOGGER POWER SUPPLY AND GROUND CIRCUIT

REAR WINDOW DEFOGGER POWER SUPPLY AND GROUND CIRCUIT

Description

INFOID:0000000001697555

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:0000000001697556

1.

 CHECK REAR WINDOW DEFOGGER

Check that the heating wire of rear window defogger is heated when turning the rear window defogger switch
ON.

Is the inspection result normal?

YES

>> Rear window defogger is OK.

NO

>> Refer to 

DEF-14, "Diagnosis Procedure"

.

Diagnosis Procedure

INFOID:0000000001697557

1.

 CHECK POWER SUPPLY CIRCUIT

1.

Turn ignition switch ON.

2.

Check voltage between rear window defogger connector and
ground.

Is the inspection result normal?

YES

>> GO TO 2

NO

>> GO TO 3

2.

 CHECK GROUND CIRCUIT

1.

Turn ignition switch OFF.

2.

Disconnect rear window defogger.

3.

Check continuity between rear window defogger connector and
ground.

Is the inspection result normal?

YES

>> GO TO 5

NO

>> Repair or replace harness.

3.

 CHECK HARNESS CONTINUITY 1

Terminals

Condition of rear 

window

 defogger switch

Voltage (V)

(Approx.)

(+)

(–)

Rear window 

defogger 

connector

Terminal 

B53

1

Ground

ON

Battery voltage

OFF

0

ALLIA0177ZZ

Rear window defogger connector

Terminal

Ground

Continuity 

B54

2

Yes

ALLIA0178ZZ

REAR WINDOW DEFOGGER POWER SUPPLY AND GROUND CIRCUIT

DEF-15

< COMPONENT DIAGNOSIS >

C

D

E

F

G

H

I

J

K

M

A

B

DEF

N

O

P

1.

Turn ignition switch OFF.

2.

Disconnect condenser and rear window defogger.

3.

Check continuity between condenser connector (A) and rear
window defogger connector (B).

Is the inspection result normal?

YES

>> GO TO 4

NO

>> Replace condenser. Refer to 

DEF-38, "Removal and

Installation"

.

4.

 CHECK HARNESS CONTINUITY 2

1.

Disconnect fuse block (J/B).

2.

Check continuity between fuse block (J/B) connector (A) and
condenser connector (B).

Is the inspection result normal?

YES

>> GO TO 6

NO

>> Replace or repair harness.

5.

 CHECK FILAMENT

Check filament.
Refer to 

DEF-15, "Component Inspection"

.

Is the inspection result normal?

YES

>> Refer to 

XX-XX, "*****"

.

NO

>> Repair filament. Refer to 

DEF-36, "Inspection and Repair"

.

6.

 CHECK INTERMITTENT INCIDENT

Check intermittent incident.
Refer to 

XX-XX, "*****"

.

Is the inspection result normal?

YES

>>

Check the following.

• Battery power supply circuit.
• Fuse block (J/B).

NO

>> Repair or replace the malfunctioning parts.

Component Inspection

INFOID:0000000001697558

1.

 CHECK FILAMENT

Check the filament for damage or open circuits.
Refer to 

DEF-36, "Inspection and Repair"

.

Is the inspection result normal?

YES

>> Inspection End.

NO

>> Repair filament. Refer to 

DEF-36, "Inspection and Repair"

.

Condenser 

connector

Terminal

Rear window defogger 

connector

Terminal

Continuity 

B52 (A)

1

B53 (B)

1

Yes

ALLIA0179ZZ

Fuse block (J/B) 

connector

Terminal

Condenser 

connector

Terminal

Continuity 

B4 (A)

10T

B52 (B)

1

Yes

11T

ALLIA0180ZZ