Nissan Pathfinder (2008 year). Manual - part 134

DEF-8

< COMPONENT DIAGNOSIS >

REAR WINDOW DEFOGGER SWITCH

COMPONENT DIAGNOSIS

REAR WINDOW DEFOGGER SWITCH

Description

INFOID:0000000001712106

• 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:0000000001712107

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 A/C and AV Switch Assembly"

 (with auto A/C) or 

DEF-8,

"Diagnosis Procedure Front Air Control"

 (without aut A/C).

Diagnosis Procedure A/C and AV Switch Assembly

INFOID:0000000001712108

1.

 CHECK A/C AND AV SWITCH ASSEMBLY (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 A/C and AV switch assembly.

3.

Check continuity between BCM connector (A) and A/C and AV
switch assembly connector (B).

4.

Check continuity between BCM connector (A) and ground.

Is the inspection result normal?

YES

>> Replace A/V and AC switch assembly. Refer to 

AV-266, "Removal and Installation"

.

NO

>> Repair or replace harness.

Diagnosis Procedure Front Air Control

INFOID:0000000001726732

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

BCM connector

Terminal

A/C and AV switch 

assembly connector

Terminal

Continuity 

M18 (A)

9

M98 (B)

16

Yes

BCM connector

Terminal

Ground

Continuity

M18 (A)

9

No

ALLIA0315ZZ

REAR WINDOW DEFOGGER SWITCH

DEF-9

< COMPONENT DIAGNOSIS >

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B

DEF

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1.

Turn ignition switch OFF.

2.

Disconnect BCM and front air control.

3.

Check continuity between BCM connector and front air control
connector.

4.

Check continuity between BCM connector and ground.

Is the inspection result normal?

YES

>>

VTL-8, "Removal and Installation"

NO

>> Repair or replace harness.

BCM connector

Terminal

A/C and AV switch 

assembly connector

Terminal

Continuity 

M18

9

M49

11

Yes

BCM connector

Terminal

Ground

Continuity

M18

9

No

LIIA2047E

DEF-10

< COMPONENT DIAGNOSIS >

REAR WINDOW DEFOGGER RELAY

REAR WINDOW DEFOGGER RELAY

Description

INFOID:0000000001712109

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

Component Function Check

INFOID:0000000001712110

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:0000000001712111

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 connector and ground.

Is the inspection result normal?

YES

>> Replace IPDM E/R. Refer to 

PCS-30, "Removal and Installation of IPDM E/R"

.

NO

>> GO TO 3

3.

 CHECK INTERMITTENT INCIDENT

Check intermittent incident.
Refer to 

GI-51, "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

< COMPONENT DIAGNOSIS >

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REAR WINDOW DEFOGGER POWER SUPPLY AND GROUND CIRCUIT

Description

INFOID:0000000001712112

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:0000000001712113

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:0000000001712114

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 4

NO

>> Repair or replace harness.

3.

 CHECK HARNESS CONTINUITY

Terminals

Condition of rear 

window

 defogger switch

Voltage (V)

(Approx.)

(+)

(–)

Rear window 

defogger 

connector

Terminal 

D651

1

Ground

ON

Battery voltage

OFF

0

ALLIA0177ZZ

Rear window defogger connector

Terminal

Ground

Continuity 

D604

2

Yes

ALLIA0178ZZ

DEF-12

< COMPONENT DIAGNOSIS >

REAR WINDOW DEFOGGER POWER SUPPLY AND GROUND CIRCUIT

1.

Disconnect IPDM E/R.

2.

Check continuity between rear window defogger connector (A)
and IPDM E/R connector (B).

3.

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

Is the inspection result normal?

YES

>> GO TO 5

NO

>> Replace or repair harness.

4.

 CHECK FILAMENT

Check filament.
Refer to 

DEF-12, "Component Inspection"

.

Is the inspection result normal?

YES

>> Refer to 

GI-51, "Intermittent Incident"

.

NO

>> Repair filament. Refer to 

DEF-34, "Filament Repair"

.

5.

 CHECK INTERMITTENT INCIDENT

Check intermittent incident.
Refer to 

GI-51, "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:0000000001712115

1.

 CHECK FILAMENT

Check the filament for damage or open circuits.
Refer to 

DEF-34, "Filament Check"

.

Is the inspection result normal?

YES

>> Inspection End.

NO

>> Repair filament. Refer to 

DEF-34, "Filament Repair"

.

Rear window defog-

ger connector

Terminal

IPDM E/R 
connector

Terminal

Continuity 

D651 (A)

1

E124 (B)

60

Yes

Rear window defog-

ger connector

Terminal

Ground

Continuity 

D651 (A)

1

No

LIIA2644E

DOOR MIRROR DEFOGGER LH

DEF-13

< COMPONENT DIAGNOSIS >

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DOOR MIRROR DEFOGGER LH

Description

INFOID:0000000001712116

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:0000000001712117

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-13, "Diagnosis Procedure"

.

Diagnosis Procedure

INFOID:0000000001712118

1.

 CHECK POWER SUPPLY

Check if the following fuse in the IPDM E/R is 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 DOOR MIRROR DEFOGGER POWER SUPPLY CIRCUIT

Check voltage between IPDM E/R connector and ground.

Is the inspection result normal?

YES

>> GO TO 3

NO

>> Replace IPDM E/R. Refer to 

PCS-30, "Removal and Installation of IPDM E/R"

.

3.

 CHECK DOOR MIRROR DEFOGGER 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 connector and ground.

Is the inspection result normal?

YES

>> GO TO 4

COMPONENT PARTS

AMPERE

FUSE NO.

IPDM E/R

15A

43

Connector

Terminal

Condition

Voltage (V)

(Approx.)

(+)

(-)

E120

23

Ground

Rear window defogger 
switch ON

 Battery voltage

Rear window defogger 
switch OFF

0

LIIA2049E

Connector

Terminal

Condition

Voltage (V)

(Approx.)

(+)

(-)

D4

1

Ground

Rear window defogger 
switch ON

 Battery voltage

Rear window defogger 
switch OFF

0

LIIA2050E

DEF-14

< COMPONENT DIAGNOSIS >

DOOR MIRROR DEFOGGER LH

NO

>> Repair or replace harness.

4.

CHECK DOOR MIRROR DEFOGGER CIRCUIT

1.

Turn ignition switch OFF.

2.

Disconnect IPDM E/R.

3.

Check continuity between IPDM E/R connector and door mirror
LH or RH connector.

4.

Check continuity between IPDM E/R and ground.

Is the inspection result normal?

YES

>> GO TO 4.

NO

>> Repair or replace harness.

5.

 CHECK DOOR MIRROR DEFOGGER GROUND CIRCUIT

Check continuity between door mirror LH connector D4 terminal 6
and ground.

Is the inspection result normal?

YES

>> GO TO 6

NO

>> Repair or replace harness.

6.

 CHECK DOOR MIRROR DEFOGGER LH

Check door mirror defogger LH.
Refer to 

DEF-14, "Component Inspection"

.

Is the inspection result normal?

YES

>> GO TO 7

NO

>> Replace door mirror. Refer to 

MIR-13, "Door Mirror Assembly"

.

7.

 CHECK INTERMITTENT INCIDENT

Check intermittent incident.
Refer to 

GI-51, "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:0000000001712119

1.

 CHECK DOOR MIRROR DEFOGGER 

Connector

Terminal

Connector

Terminal

Continuity

A

B

IPDM E/R: 

E120

23

Door mirror: 

D4

1

Yes

A

Ground

Continuity

Connector

Terminal

IPDM E/R: 

E120

23

No

LIIA2191E

6 - Ground

: Continuity should exist.

LIIA2037E

DOOR MIRROR DEFOGGER LH

DEF-15

< COMPONENT DIAGNOSIS >

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Check continuity between door mirror LH terminals 1 and 6.

Is the inspection result normal?

YES

>> Check the condition of the harness and the connector.

NO

>> Replace malfunctioning door mirror LH. Refer to 

MIR-

13, "Door Mirror Assembly"

.

1 - 6

: Continuity should exist.

LIIA2038E