Nissan Frontier D40. Manual - part 201

DEF-8

< COMPONENT DIAGNOSIS >

REAR WINDOW DEFOGGER SWITCH

COMPONENT DIAGNOSIS

REAR WINDOW DEFOGGER SWITCH

Description

INFOID:0000000005272647

• The rear window defogger is operated by turning the rear window defogger switch ON.
• Turns the indicator lamp in the rear window defogger switch ON when operating the rear window defogger.

Component Function Check

INFOID:0000000005272648

1.

 CHECK REAR WINDOW DEFOGGER SWITCH FUNCTION

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

Is the inspection result normal?

YES

>> Rear window defogger switch function is OK.

NO

>> Refer to 

DEF-8, "Diagnosis Procedure Front Air Control"

.

Diagnosis Procedure Front Air Control

INFOID:0000000005272649

Regarding Wiring Diagram information, refer to 

DEF-27, "Wiring Diagram - Defogger Control System"

.

1.

 CHECK FRONT AIR CONTROL (REAR WINDOW DEFOGGER SWITCH) CIRCUIT

Does rear window defogger switch operate normally?

Is the inspection result normal?

YES

>> Inspection End.

NO

>> GO TO 2

2.

 CHECK HARNESS CONTINUITY

1.

Turn ignition switch OFF.

2.

Disconnect BCM and front air control.

3.

Check continuity between BCM harness connector M18 (A) ter-
minal 9 and front air control harness connector M50 (B) terminal
16.

4.

Check continuity between BCM harness connector M18 (A) ter-
minal 9 and ground.

Is the inspection result normal?

YES

>> Replace front air control. Refer to 

VTL-7, "Removal and Installation"

.

NO

>> Repair or replace harness as necessary.

BCM connector

Terminal

Front air control con-

nector

Terminal

Continuity 

M18

9

M50

16

Yes

BCM connector

Terminal

Ground

Continuity

M18

9

No

AWLIA1685ZZ

REAR WINDOW DEFOGGER RELAY

DEF-9

< COMPONENT DIAGNOSIS >

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REAR WINDOW DEFOGGER RELAY

Description

INFOID:0000000005272650

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

Component Function Check

INFOID:0000000005272651

1.

 CHECK REAR WINDOW DEFOGGER RELAY POWER SUPPLY CIRCUIT

Check that an operation noise of rear window defogger relay (located in IPDM E/R) 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-9, "Diagnosis Procedure"

.

Diagnosis Procedure

INFOID:0000000005272652

Regarding Wiring Diagram information, refer to 

DEF-27, "Wiring Diagram - Defogger Control System"

.

1.

CHECK FUSES 

Check if any of the following fuses in the IPDM E/R are blown.

Is the inspection result normal?

YES

>> GO TO 2

NO

>> If fuse is blown, be sure to eliminate cause of malfunction before installing new fuse.

2.

 CHECK REAR WINDOW DEFOGGER RELAY POWER SUPPLY CIRCUIT

1.

Turn ignition switch ON.

2.

Check voltage between IPDM E/R harness connector E124 ter-
minal 60 and ground.

Is the inspection result normal?

YES

>> Replace IPDM E/R. Refer to 

PCS-33, "Removal and Installation of IPDM E/R"

.

NO

>> GO TO 3

3.

 CHECK INTERMITTENT INCIDENT

Check intermittent incident.
Refer to 

GI-46, "Intermittent Incident"

.

Is the inspection result normal?

YES

>>

Check the following.

• Battery power supply circuit
• IPDM E/R

NO

>> Repair or replace the malfunctioning parts.

COMPONENT PARTS

AMPERE

FUSE NO.

IPDM E/R

15A

46

IPDM E/R

15A

47

Terminals

Condition of rear 

window defogger 

switch

Voltage (V)

(Approx.)

(+)

(–)

IPDM E/R con-

nector

Terminal 

E124

60

Ground

ON Battery 

voltage

OFF

0

LIIA2190E

DEF-10

< COMPONENT DIAGNOSIS >

REAR WINDOW DEFOGGER POWER SUPPLY AND GROUND CIRCUIT

REAR WINDOW DEFOGGER POWER SUPPLY AND GROUND CIRCUIT

Description

INFOID:0000000005272653

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:0000000005272654

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-10, "Diagnosis Procedure"

.

Diagnosis Procedure

INFOID:0000000005272655

Regarding Wiring Diagram information, refer to 

DEF-27, "Wiring Diagram - Defogger Control System"

.

1.

 CHECK POWER SUPPLY CIRCUIT

1.

Turn ignition switch ON.

2.

Check voltage between rear window defogger harness connec-
tor B165 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 B210 terminal 2 and ground.

Is the inspection result normal?

YES

>> GO TO 4

NO

>> Repair or replace harness as necessary.

3.

 CHECK HARNESS CONTINUITY

Terminals

Condition of rear 

window

 defogger switch

Voltage (V)

(Approx.)

(+)

(–)

Rear window 

defogger 

connector

Terminal 

B165

1

Ground

ON

Battery voltage

OFF

0

ALLIA0177ZZ

Rear window defogger connector

Terminal

Ground

Continuity 

B210

2

Yes

ALLIA0178ZZ

REAR WINDOW DEFOGGER POWER SUPPLY AND GROUND CIRCUIT

DEF-11

< COMPONENT DIAGNOSIS >

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1.

Disconnect IPDM E/R.

2.

Check continuity between rear window defogger harness con-
nector B165 (A) terminal 1 and IPDM E/R harness connector
E124 (B) terminal 60.

3.

Check continuity between rear window defogger harness con-
nector B165 (A) terminal 1 and ground.

Is the inspection result normal?

YES

>> GO TO 5

NO

>> Replace or repair harness.

4.

 CHECK FILAMENT

Check filament.
Refer to 

DEF-11, "Component Inspection"

.

Is the inspection result normal?

YES

>> Refer to 

GI-46, "Intermittent Incident"

.

NO

>> Repair filament. Refer to 

DEF-40, "Filament Repair"

.

5.

 CHECK INTERMITTENT INCIDENT

Check intermittent incident.
Refer to 

GI-46, "Intermittent Incident"

.

Is the inspection result normal?

YES

>>

Check the following.

• Battery power supply circuit
• IPDM E/R

NO

>> Repair or replace the malfunctioning parts.

Component Inspection

INFOID:0000000005272656

1.

 CHECK FILAMENT

Check the filament for damage or open circuits.
Refer to 

DEF-40, "Filament Check"

.

Is the inspection result normal?

YES

>> Inspection End.

NO

>> Repair filament. Refer to 

DEF-40, "Filament Repair"

.

Rear window defog-

ger connector

Terminal

IPDM E/R 
connector

Terminal

Continuity 

B165 (A)

1

E124 (B)

60

Yes

Rear window defog-

ger connector

Terminal

Ground

Continuity 

B165 (A)

1

No

LIIA2644E