Nissan Frontier. Manual - part 230

DEF-8

< DTC/CIRCUIT DIAGNOSIS >

REAR WINDOW DEFOGGER SWITCH

DTC/CIRCUIT DIAGNOSIS

REAR WINDOW DEFOGGER SWITCH

Description

INFOID:0000000009479590

• 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:0000000009479591

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"

.

Diagnosis Procedure

INFOID:0000000009479592

Regarding Wiring Diagram information, refer to 

DEF-27, "Wiring Diagram"

.

1.

 CHECK REAR WINDOW DEFOGGER SWITCH REQUEST SIGNAL

1. Turn ignition switch ON.

2. Check voltage between front air control harness connector and ground.

Is the inspection result normal?

YES

>> Refer to 

GI-42, "Intermittent Incident"

.

NO

>> GO TO 2.

2.

 CHECK REAR WINDOW DEFOGGER SWITCH VOLTAGE SIGNAL

1. Turn ignition switch OFF.

2. Disconnect front air control.

3. Turn ignition switch ON.

4. Check voltage between front air control harness connector and ground.

Terminals

Condition of rear window 

defogger switch

Voltage (V)

(Approx.)

(+)

(–)

Front air control connec-

tor

Terminal 

M49

(with manual A/C type 2)

11

Ground

ON 0

M50

(with manual A/C type 1)

16

OFF

5

M52

(with auto A/C)

REAR WINDOW DEFOGGER SWITCH

DEF-9

< DTC/CIRCUIT DIAGNOSIS >

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A

B

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N

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P

Is the inspection result normal?

YES

>> Replace front air control. Refer to 

VTL-7, "Removal and Installation"

.

NO

>> GO TO 3.

3.

 CHECK HARNESS CONTINUITY

1. Turn ignition switch OFF.

2. Disconnect BCM harness connector M19.

3. Check continuity between BCM harness connector M19 terminal 41 and front air control harness connec-

tor.

4. Check continuity between BCM harness connector M19 terminal 41 and ground.

Is the inspection result normal?

YES

>> Replace BCM. Refer to 

BCS-49, "Removal and Installation"

.

NO

>> Repair or replace harness as necessary.

Terminals

Voltage (V)

(Approx.)

(+)

(–)

Front air control connector

Terminal 

M49

(with manual A/C type 2)

11

Ground

5

M50

(with manual A/C type 1)

16

M52

(with auto A/C)

BCM connector

Terminal

Front air control connector

Terminal

Continuity 

M19

41

M49 (with manual A/C type 2)

11

Yes

M50 (with manual A/C type 1)

16

M52 (with auto A/C)

BCM connector

Terminal

Ground

Continuity

M19

41

No

DEF-10

< DTC/CIRCUIT DIAGNOSIS >

REAR WINDOW DEFOGGER RELAY

REAR WINDOW DEFOGGER RELAY

Description

INFOID:0000000009479593

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

Component Function Check

INFOID:0000000009479594

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-10, "Diagnosis Procedure"

.

Diagnosis Procedure

INFOID:0000000009479595

Regarding Wiring Diagram information, refer to 

DEF-27, "Wiring Diagram"

.

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

>> GO TO 3.

NO

>> Replace IPDM E/R. Refer to 

PCS-28, "Removal and Installation of IPDM E/R"

.

3.

 CHECK INTERMITTENT INCIDENT

Check intermittent incident.

Refer to 

GI-42, "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

REAR WINDOW DEFOGGER POWER SUPPLY AND GROUND CIRCUIT

DEF-11

< DTC/CIRCUIT DIAGNOSIS >

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DEF

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REAR WINDOW DEFOGGER POWER SUPPLY AND GROUND CIRCUIT

Description

INFOID:0000000009479596

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:0000000009479597

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-11, "Diagnosis Procedure"

.

Diagnosis Procedure

INFOID:0000000009479598

Regarding Wiring Diagram information, refer to 

DEF-27, "Wiring Diagram"

.

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