Nissan Maxima. Manual - part 307

REAR WINDOW DEFOGGER RELAY

DEF-13

< DTC/CIRCUIT DIAGNOSIS >

C

D

E

F

G

H

I

J

K

M

A

B

DEF

N

O

P

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 

GI-41, "Intermittent Incident"

.

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:0000000010045585

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

< DTC/CIRCUIT DIAGNOSIS >

REAR WINDOW DEFOGGER POWER SUPPLY AND GROUND CIRCUIT

REAR WINDOW DEFOGGER POWER SUPPLY AND GROUND CIRCUIT

Description

INFOID:0000000010045586

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:0000000010045587

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:0000000010045588

Regarding Wiring Diagram information, refer to 

DEF-46, "Wiring Diagram"

.

1.

 CHECK POWER SUPPLY CIRCUIT

1. Turn ignition switch ON.

2. Check voltage between rear window defogger harness connec-

tor B53 terminal 1 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 harness con-

nector B54 terminal 2 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 de-

fogger 

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

< DTC/CIRCUIT DIAGNOSIS >

C

D

E

F

G

H

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J

K

M

A

B

DEF

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1. Turn ignition switch OFF.

2. Disconnect condenser and rear window defogger.

3. Check continuity between condenser harness connector B52

(A) terminal 1 and rear window defogger harness connector B53

(B) terminal 1.

Is the inspection result normal?

YES

>> GO TO 4

NO

>> Replace condenser. Refer to 

DEF-66, "Removal and Installation"

.

4.

 CHECK HARNESS CONTINUITY 2

1. Disconnect fuse block (J/B).

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

B4 (A) terminal 10T, 11T and condenser harness connector B52

(B) terminal 1.

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 

GI-41, "Intermittent Incident"

.

NO

>> Repair filament. Refer to 

DEF-64, "Inspection and Repair"

.

6.

 CHECK INTERMITTENT INCIDENT

Check intermittent incident.

Refer to 

GI-41, "Intermittent Incident"

.

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:0000000010045589

1.

 CHECK FILAMENT

Check the filament for damage or open circuits.

Refer to 

DEF-64, "Inspection and Repair"

.

Is the inspection result normal?

YES

>> Inspection End.

NO

>> Repair filament. Refer to 

DEF-64, "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

DEF-16

< DTC/CIRCUIT DIAGNOSIS >

DRIVER SIDE DOOR MIRROR DEFOGGER

DRIVER SIDE DOOR MIRROR DEFOGGER

Description

INFOID:0000000010045590

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:0000000010045591

1.

 CHECK DOOR MIRROR DEFOGGER LH

Check that heating wire of door mirror defogger LH is heated when turning the rear window defogger switch

ON.
Is the inspection result normal?

YES

>> Door mirror defogger is OK.

NO

>> Refer to 

DEF-16, "Diagnosis Procedure"

.

Diagnosis Procedure

INFOID:0000000010045592

Regarding Wiring Diagram information, refer to 

DEF-46, "Wiring Diagram"

.

1.

 CHECK POWER SUPPLY CIRCUIT 

1. Turn ignition switch OFF.

2. Disconnect door mirror LH. 

3. Turn ignition switch ON.

4. Check voltage between door mirror LH harness connector D4

terminal 5 and ground.

Is the inspection result normal?

YES

>> GO TO 2

NO

>> Repair or replace harness.

2.

 CHECK GROUND CIRCUIT

1. Turn ignition switch OFF.

2. Check continuity between door mirror LH harness connector D4

terminal 13 and ground.

Is the inspection result normal?

YES

>> GO TO 3

NO

>> Repair or replace harness.

3.

 CHECK DOOR MIRROR DEFOGGER LH

Check door mirror defogger LH.

Refer to 

DEF-17, "Component Inspection"

.

Is the inspection result normal?

Terminals

Condition of 
rear window 

defogger 

switch

Voltage (V)

(Approx.)

(+)

(–)

Door mirror LH 

connector

Terminal 

D4

5

Ground

ON

Battery voltage

OFF

0

ALLIA0917ZZ

Door mirror LH connector

Terminal

Ground

Continuity 

D4

13

Yes

ALLIA0918ZZ