Nissan Pathfinder (2010 year). Manual - part 133

DIAGNOSIS SYSTEM (BCM)

DEF-7

< FUNCTION DIAGNOSIS >

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REAR WINDOW DEFOGGER : CONSULT-III Function (BCM - REAR DEFOGGER)

INFOID:0000000005485382

DATA MONITOR

ACTIVE TEST

Monitor Item

[Unit]

Description

IGN ON SW [ON/OFF]

Indicates condition of ignition switch in ON position

ACC ON SW [ON/OFF]

Indicates condition of ignition switch in ACC position

REAR DEF SW [ON/OFF] Displays “Press (ON)/other (OFF)” status determined with the rear window defogger switch

Test Item

Description

REAR DEFOGGER

This test is able to check rear window defogger operation. Rear window defogger operates 
when ’ON" on CONSULT-III screen is touched

2010 Pathfinder

DEF-8

< COMPONENT DIAGNOSIS >

REAR WINDOW DEFOGGER SWITCH

COMPONENT DIAGNOSIS

REAR WINDOW DEFOGGER SWITCH

Description

INFOID:0000000005256866

• 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:0000000005256867

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-9,

"Diagnosis Procedure Front Air Control"

 (without auto A/C).

Diagnosis Procedure A/C and AV Switch Assembly

INFOID:0000000005256868

Regarding Wiring Diagram information, refer to 

DEF-28, "Wiring Diagram"

.

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 harness connector M18 (A) terminal 9 and A/C and AV switch assembly

harness connector M98 (B) terminal 16.

 

4. Check continuity between BCM harness connector M18 (A) terminal 9 and ground.

Is the inspection result normal?

YES

>> Replace A/C and AV switch assembly. Refer to 

VTL-7, "Removal and Installation"

.

NO

>> Repair or replace harness.

BCM connector

Terminal

A/C and AV switch 

assembly connector

Terminal

Continuity 

M18 (A)

9

M98 (B)

16

Yes

ALLIA0315ZZ

BCM connector

Terminal

Ground

Continuity

M18 (A)

9

No

2010 Pathfinder

REAR WINDOW DEFOGGER SWITCH

DEF-9

< COMPONENT DIAGNOSIS >

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Diagnosis Procedure Front Air Control

INFOID:0000000005256869

Regarding Wiring Diagram information, refer to 

DEF-28, "Wiring Diagram"

.

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 terminal

9 and front air control harness connector M52 terminal 11.

4. Check continuity between BCM harness connector M18 terminal

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.

BCM connector

Terminal

Front air control    

connector

Terminal

Continuity 

M18

9

M52

11

Yes

BCM connector

Terminal

Ground

Continuity

M18

9

No

LIIA2047E

2010 Pathfinder

DEF-10

< COMPONENT DIAGNOSIS >

REAR WINDOW DEFOGGER RELAY

REAR WINDOW DEFOGGER RELAY

Description

INFOID:0000000005256870

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

Component Function Check

INFOID:0000000005256871

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:0000000005256872

Regarding Wiring Diagram information, refer to 

DEF-28, "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 connector E124 terminal 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-37, "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

2010 Pathfinder

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:0000000005256873

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:0000000005256874

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:0000000005256875

Regarding Wiring Diagram information, refer to 

DEF-28, "Wiring Diagram"

.

1.

 CHECK POWER SUPPLY CIRCUIT

1. Turn ignition switch ON.

2. Press the rear window defogger switch.

3. Check voltage between rear window defogger harness connec-

tor D651 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 D604 terminal 2 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

2010 Pathfinder

DEF-12

< COMPONENT DIAGNOSIS >

REAR WINDOW DEFOGGER POWER SUPPLY AND GROUND CIRCUIT

1. Disconnect IPDM E/R.

2. Check continuity between rear window defogger harness con-

nector D651 (A) terminal 1 and IPDM E/R connector E124 (B)

terminal 60.

3. Check continuity between rear window defogger harness con-

nector D651 (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-12, "Component Inspection"

.

Is the inspection result normal?

YES

>> Refer to 

GI-37, "Intermittent Incident"

.

NO

>> Repair filament. Refer to 

DEF-43, "Filament Repair"

.

5.

 CHECK INTERMITTENT INCIDENT

Check intermittent incident.

Refer to 

GI-37, "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:0000000005256876

1.

 CHECK FILAMENT

Check the filament for damage or open circuits.

Refer to 

DEF-43, "Filament Check"

.

Is the inspection result normal?

YES

>> Inspection End.

NO

>> Repair filament. Refer to 

DEF-43, "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

2010 Pathfinder

DOOR MIRROR DEFOGGER LH

DEF-13

< COMPONENT DIAGNOSIS >

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DOOR MIRROR DEFOGGER LH

Description

INFOID:0000000005256877

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:0000000005256878

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:0000000005256879

Regarding Wiring Diagram information, refer to 

DEF-28, "Wiring Diagram"

.

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

1. Turn ignition switch ON.

2. Check voltage between IPDM E/R connector E120 terminal 23

and ground.

Is the inspection result normal?

YES

>> GO TO 3

NO

>> Replace IPDM E/R. Refer to 

PCS-33, "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 harness connector terminal 1 and ground.

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

2010 Pathfinder

DEF-14

< COMPONENT DIAGNOSIS >

DOOR MIRROR DEFOGGER LH

WITHOUT AUTOMATIC DRIVE POSITIONER

WITH AUTOMATIC DRIVE POSITIONER

Is the inspection result normal?

YES

>> GO TO 4

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 E120 (A) termi-

nal 23 and door mirror LH harness connector (B) terminal 1.

WITHOUT AUTOMATIC DRIVE POSITIONER

WITH AUTOMATIC DRIVE POSITIONER

4. Check continuity between IPDM E/R connector E120 terminal 23 and ground.

Is the inspection result normal?

YES

>> GO TO 5.

NO

>> Repair or replace harness.

5.

 CHECK DOOR MIRROR DEFOGGER GROUND CIRCUIT

Connector

Terminal

Condition

Voltage (V)

(Approx.)

(+)

(-)

D4

1

Ground

Rear window defogger 
switch ON

 Battery voltage

Rear window defogger 
switch OFF

0

Connector

Terminal

Condition

Voltage (V)

(Approx.)

(+)

(-)

D18

1

Ground

Rear window defogger 
switch ON

 Battery voltage

Rear window defogger 
switch OFF

0

LIIA2050E

LIIA2191E

Connector

Terminal

Connector

Terminal

Continuity

A

B

IPDM E/R: E120

23

Door mirror: 

D4 

1

Yes

Connector

Terminal

Connector

Terminal

Continuity

A

B

IPDM E/R: E120

23

Door mirror: 

D18 

1

Yes

A

Ground

Continuity

Connector

Terminal

IPDM E/R: E120

23

No

2010 Pathfinder