Nissan Pathfinder (2008 year). Manual - part 400

TRAILER TOW

EXL-99

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ALLIA0499GB

EXL-100

< ECU DIAGNOSIS >

BCM (BODY CONTROL MODULE)

ECU DIAGNOSIS

BCM (BODY CONTROL MODULE)

Description

INFOID:0000000001712404

REFERENCE VALUES FOR BCM

For BCM reference values, refer to 

BCS-38, "Reference Value"

.

TERMINAL LAYOUT FOR BCM

For the terminal layout for the BCM, refer to 

BCS-41, "Terminal Layout"

.

PHYSICAL VALUES FOR BCM

For physical values for the BCM, refer to 

BCS-41, "Physical Values"

.

WIRING DIAGRAM - BCM

For the BCM wiring diagram, refer to 

BCS-47, "Wiring Diagram"

.

DTC INSPECTION PRIORITY CHART - BCM

For the BCM DTC inspection priority chart, refer to 

BCS-50, "DTC Inspection Priority Chart"

.

DTC INDEX - BCM

For the BCM DTC index, refer to 

BCS-51, "DTC Index"

.

IPDM E/R (INTELLIGENT POWER DISTRIBUTION MODULE ENGINE ROOM)

EXL-101

< ECU DIAGNOSIS >

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IPDM E/R (INTELLIGENT POWER DISTRIBUTION MODULE ENGINE
ROOM)

Description

INFOID:0000000001712405

REFERENCE VALUES FOR IPDM E/R

For IPDM E/R reference values, refer to 

PCS-17, "Reference Value"

.

TERMINAL LAYOUT FOR IPDM E/R

For the terminal layout for the IPDM E/R, refer to 

PCS-19, "Terminal Layout"

.

PHYSICAL VALUES FOR IPDM E/R

For physical values for the IPDM E/R, refer to 

PCS-19, "Physical Values"

.

WIRING DIAGRAM - IPDM E/R

For the IPDM E/R wiring diagram, refer to 

PCS-23, "Wiring Diagram"

.

FAIL SAFE  - IPDM E/R

For IPDM E/R fail safe information, refer to 

PCS-26, "Fail Safe"

.

DTC INDEX - IPDM E/R

For the IPDM E/R DTC index, refer to 

PCS-28, "DTC Index"

.

EXL-102

< SYMPTOM DIAGNOSIS >

EXTERIOR LIGHTING SYSTEM SYMPTOMS

SYMPTOM DIAGNOSIS

EXTERIOR LIGHTING SYSTEM SYMPTOMS

Symptom Table

INFOID:0000000001712406

CAUTION:

Perform the self-diagnosis with CONSULT-III before the symptom diagnosis. Perform the trouble diag-
nosis if any DTC is detected.

Symptom

Possible cause

Inspection item

Headlamp does not 
switch to the high beam.

One side

• Fuse
• Harness between IPDM E/R 

and the front combination lamp

• Front combination lamp

(High beam relay)

• IPDM E/R

Headlamp (HI) circuit
Refer to 

EXL-26

.

Both sides

Symptom diagnosis
 "BOTH SIDE HEADLAMPS DO NOT SWITCH TO HIGH BEAM"
Refer to 

EXL-105

.

High beam indicator lamp is not turned ON.
(Headlamp switches to the high beam.)

• Combination meter
• BCM

• Combination meter. 

Data monitor "HI-BEAM IND"

• BCM (HEAD LAMP)

Active test "HEADLAMP"

Headlamp does not 
switch to the low beam.

One side

Front combination lamp (Low 
beam relay)

—

Both sides

• Combination switch
• Harness between the combina-

tion switch and BCM

• BCM

Combination switch
Refer to 

BCS-7

.

High beam request signal
• BCM
• IPDM E/R

IPDM E/R
Data monitor "HL HI REQ"

IPDM E/R

—

Headlamp does not turn 
ON.

One side

• Fuse
• Bulb
• Harness between IPDM E/R 

and the front combination lamp

• Front combination lamp
• IPDM E/R

Headlamp (LO) circuit
Refer to 

EXL-28

.

Both sides

Symptom diagnosis
"BOTH SIDE HEADLAMPS (LO) ARE NOT TURNED ON"
Refer to 

EXL-106, "Description"

.

Headlamp does not turn 
OFF.

When the ignition 
switch is turned ON

• BCM
• Combination switch

Combination switch
Refer to 

BCS-7

.

The ignition switch is 
turned OFF (After acti-
vating the battery sav-
er).

IPDM E/R

—

Headlamp is not turned ON/OFF with the lighting 
switch AUTO.

• Combination switch
• Harness between the combina-

tion switch and BCM

• BCM

Combination switch
Refer to 

BCS-7

.

• Optical sensor
• Harness between the optical 

sensor and BCM

• BCM

Optical sensor
Refer to 

EXL-40

.

EXTERIOR LIGHTING SYSTEM SYMPTOMS

EXL-103

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Daytime light system does not activate.

• Either high beam bulb
• Parking brake switch
• Combination switch
• BCM
• IPDM E/R
• Daytime light relay
• Harness between IPDM E/R 

and daytime light relay.

Daytime light system description. 
Refer to 

EXL-9, "System Descrip-

tion"

.

Front fog lamp is not 
turned ON.

One side

• Front fog lamp bulb
• Harness between IPDM E/R 

and the front combination lamp

• Front combination lamp
• IPDM E/R

Front fog lamp circuit
Refer to 

EXL-30

.

Both side

Symptom diagnosis
"BOTH SIDE FRONT FOG LAMPS ARE NOT TURNED ON"
Refer to 

EXL-108

.

Parking lamp is not turned 
ON.

One side

• Fuse
• Parking lamp bulb
• Harness between IPDM E/R 

and the front/rear combination 
lamp

• Front/rear combination lamp
• IPDM E/R

Parking lamp circuit
Refer to 

EXL-32

.

Both sides

Symptom diagnosis
"PARKING, LICENSE PLATE AND TAIL LAMPS ARE NOT TURNED 
ON"
Refer to 

EXL-107

.

Turn signal lamp does not 
blink.

Indicator lamp is nor-
mal.
(The applicable side 
performs the high flash-
er activation).

• Harness between BCM and 

each turn signal lamp

• Turn signal lamp bulb
• Door mirror (if equipped with 

turn signals in the door mirrors)

Turn signal lamp circuit
Refer to 

EXL-37

.

Turn signal indicator lamp 
does not blink.

One side

Combination meter

—

Both sides
(Always)

• Turn signal indicator lamp sig-

nal

• Combination meter
• BCM

• Combination meter. 

Data monitor "TURN IND"

• BCM (FLASHER)

Active test "FLASHER"

Both sides
(Does blink when acti-
vating the hazard warn-
ing lamp with the 
ignition switch OFF)

• The combination meter power 

supply and the ground circuit

• Combination meter

Combination meter
Power supply and the ground circuit
Refer to 

MWI-29

.

Symptom

Possible cause

Inspection item

EXL-104

< SYMPTOM DIAGNOSIS >

NORMAL OPERATING CONDITION

NORMAL OPERATING CONDITION

Description

INFOID:0000000001712407

AUTO LIGHT SYSTEM

The auto light system may not turn the headlamp ON/OFF immediately after passing a dark area or a bright
area (short tunnel, sky bridge, shadowed area etc.). This is normal.

BOTH SIDE HEADLAMPS DO NOT SWITCH TO HIGH BEAM

EXL-105

< SYMPTOM DIAGNOSIS >

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BOTH SIDE HEADLAMPS DO NOT SWITCH TO HIGH BEAM

Description

INFOID:0000000001712408

The headlamps (both sides) do not switch to high beam when the lighting switch is in the HI or PASS setting.

Diagnosis Procedure

INFOID:0000000001712409

1.

COMBINATION SWITCH INSPECTION

Check the combination switch. Refer to 

BCS-7, "System Description"

.

Is the combination switch normal?

YES

>> GO TO 2

NO

>> Repair or replace the malfunctioning part.

2.

CHECK HEADLAMP (HI) REQUEST SIGNAL INPUT

CONSULT-III DATA MONITOR

1.

Select "HL HI REQ" of IPDM E/R DATA MONITOR item.

2.

With operating the lighting switch, check the monitor status.

Is the item status normal?

YES

>> GO TO 3

NO

>> Replace BCM. Refer to 

BCS-54, "Removal and Installation"

 .

3.

HEADLAMP (HI) CIRCUIT INSPECTION

Check the headlamp (HI) circuit. Refer to 

EXL-26, "Description"

.

Is the headlamp (HI) circuit normal?

YES

>> Replace IPDM E/R. Refer to 

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

 .

NO

>> Repair or replace the malfunctioning part.

Monitor item

Condition

Monitor status

HL HI REQ

Lighting switch
(2ND)

HI or PASS

ON

Except for HI or 
PASS

OFF

EXL-106

< SYMPTOM DIAGNOSIS >

BOTH SIDE HEADLAMPS (LO) ARE NOT TURNED ON

BOTH SIDE HEADLAMPS (LO) ARE NOT TURNED ON

Description

INFOID:0000000001712410

The headlamps (both sides) do not turn ON in any lighting switch setting.

Diagnosis Procedure

INFOID:0000000001712411

1.

CHECK COMBINATION SWITCH

Check the combination switch. Refer to 

BCS-7, "System Description"

.

Is the combination switch normal?

YES

>> GO TO 2

NO

>> Repair or replace the malfunctioning part.

2.

CHECK HEADLAMP (LO) REQUEST SIGNAL INPUT

CONSULT-III DATA MONITOR

1.

Select "HL LO REQ" of IPDM E/R DATA MONITOR item.

2.

With operating the lighting switch, check the monitor status.

Is the item status normal?

YES

>> GO TO 3

NO

>> Replace BCM. Refer to 

BCS-54, "Removal and Installation"

 .

3.

HEADLAMP (LO) CIRCUIT INSPECTION

Check the headlamp (LO) circuit. Refer to 

EXL-28, "Description"

.

Is the headlamp (LO) circuit normal?

YES

>> Replace IPDM E/R. Refer to 

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

 .

NO

>> Repair or replace the malfunctioning part.

Monitor item

Condition

Monitor status

HL LO REQ

Lighting switch

2ND

ON

OFF

OFF