Nissan Pathfinder (2009 year). Manual - part 476

ILLUMINATION CONTROL SYSTEM

INL-9

< FUNCTION DIAGNOSIS >

C

D

E

F

G

H

I

J

K

M

A

B

INL

N

O

P

ILLUMINATION CONTROL SYSTEM

System Diagram

INFOID:0000000003938843

System Description

INFOID:0000000003938844

The illumination lamps operation is dependent upon the position of the lighting switch (combination switch).
When the lighting switch is placed in the 1ST or 2ND position (or if the auto light system is activated) the BCM
(body control module) receives input requesting the parking lamps to illuminate. This input is communicated to
the IPDM E/R (intelligent power distribution module engine room) via the CAN communication lines. The CPU
(central processing unit) of the IPDM E/R controls the tail lamp relay coil. When energized, this relay directs
power to the parking and illumination lamps, which then illuminate. 

BATTERY SAVER CONTROL

When the lighting switch (combination switch) is in the 1ST or 2ND position and the ignition switch is turned
from ON or ACC to OFF, the battery saver control feature is activated. Under this condition, the illumination
lamps remain illuminated for 30 minutes unless the lighting switch position is changed. If the lighting switch
position is changed, then the illumination lamps are turned off after a 30 second delay. When the lighting
switch is turned from OFF to 1ST or 2ND position (or if auto light system is activated) after illumination lamps
have been turned off by the battery saver control, the illumination lamps illuminate again.

ALLIA0424GB

2009 Pathfinder

INL-10

< FUNCTION DIAGNOSIS >

ILLUMINATION CONTROL SYSTEM

Component Parts Location

INFOID:0000000003938845

Component Description

INFOID:0000000003938846

1.

IPDM E/R E122, E124

2.

Combination switch M28

3.

Combination meter M24

4.

Illumination control switch (built into 
combination meter)

5.

BCM M18, M20 (view with instrument 
panel removed)

WKIA4973E

Part name

Description

BCM

The BCM monitors the lighting switch position with the combina-
tion switch reading function.  The BCM requests, via CAN com-
munication, that the IPDM E/R activate the tail lamp relay. 

IPDM E/R

The IPDM E/R activates the tail lamp relay based on inputs re-
ceived from the BCM via the CAN communication network. 

Combination meter (illumination control switch)

The illumination control switch is a part of the combination meter.  
The combination meter controls illumination intensity by varying 
ground to the illumination lamps based on the illumination control 
switch position. 

Combination switch

The combination switch provides input to the BCM about the light-
ing switch position. 

2009 Pathfinder

DIAGNOSIS SYSTEM (BCM)

INL-11

< FUNCTION DIAGNOSIS >

C

D

E

F

G

H

I

J

K

M

A

B

INL

N

O

P

DIAGNOSIS SYSTEM (BCM)

COMMON ITEM

COMMON ITEM : CONSULT-III Function (BCM - COMMON ITEM)

INFOID:0000000004404641

APPLICATION ITEM

CONSULT-III performs the following functions via CAN communication with BCM.

SYSTEM APPLICATION

BCM can perform the following functions for each system.
NOTE:
It can perform the diagnosis modes except the following for all sub system selection items.

1: With remote keyless entry system

2: With Intelligent Key

INT LAMP

Diagnosis mode

Function Description

WORK SUPPORT

Changes the setting for each system function.

SELF-DIAG RESULTS

Displays the diagnosis results judged by BCM. Refer to 

INL-62, "DTC Index"

.

CAN DIAG SUPPORT MNTR

Monitors the reception status of CAN communication viewed from BCM.

DATA MONITOR

The BCM input/output signals are displayed.

ACTIVE TEST

The signals used to activate each device are forcibly supplied from BCM.

ECU IDENTIFICATION

The BCM part number is displayed.

CONFIGURATION

• Enables to read and save the vehicle specification.
• Enables to write the vehicle specification when replacing BCM.

System

Sub system selection item

Diagnosis mode

WORK SUPPORT

DATA MONITOR

ACTIVE TEST

BCM

BCM

×

Door lock

DOOR LOCK

×

×

×

Rear window defogger

REAR DEFOGGER

×

×

Warning chime

BUZZER

×

×

Interior room lamp timer

INT LAMP

×

×

×

Remote keyless entry system

1

MULTI REMOTE ENT

×

×

×

Exterior lamp

HEAD LAMP

×

×

×

Wiper and washer

WIPER

×

×

×

Turn signal and hazard warning lamps

FLASHER

×

×

Air conditioner

AIR CONDITONER

×

Intelligent Key system

2

INTELLIGENT KEY

×

Combination switch

COMB SW

×

Immobilizer

IMMU

×

×

Interior room lamp battery saver

BATTERY SAVER

×

×

×

Back door open

TRUNK

×

×

Theft alarm

THEFT ALM

×

×

×

RAP (retained accessory power)

RETAINED PWR

×

×

×

Signal buffer system

SIGNAL BUFFER

×

×

TPMS (tire pressure monitoring sys-
tem)

AIR PRESSURE MONITOR 

×

×

×

Vehicle security system

PANIC ALARM

×

2009 Pathfinder

INL-12

< FUNCTION DIAGNOSIS >

DIAGNOSIS SYSTEM (BCM)

INT LAMP : CONSULT-III Function (BCM - INT LAMP)

INFOID:0000000004404642

WORK SUPPORT

* : Initial setting

DATA MONITOR

JPLIA0093GB

Work Item

Setting item

Setting

SET I/L D-UNLCK INTCON

ON*

With the interior room lamp timer function

OFF

Without the interior room lamp timer function

ROOM LAMP ON TIME SET

MODE 1

0.5 sec.

Sets the interior room lamp gradual brightening time.

MODE 2*

1 sec.

MODE 3

2 sec.

MODE 4

3 sec.

MODE 5

0 sec.

ROOM LAMP OFF TIME SET

MODE 1

0.5 sec.

Sets the interior room lamp gradual dimming time.

MODE 2

1 sec.

MODE 3

2 sec.

MODE 4*

3 sec.

MODE 5

0 sec.

Monitor Item

[Unit]

Description

IGN ON SW [ON/OFF]

Ignition switch (ON) status judges from IGN signal (ignition power supply)

KEY ON SW [ON/OFF]

The switch status input from key switch

DOOR SW-DR [ON/OFF]

The switch status input from front door switch LH

DOOR SW-AS [ON/OFF]

The switch status input from front door switch RH

DOOR SW-RR [ON/OFF]

The switch status input from rear door switch RH

DOOR SW- RL [ON/OFF]

The switch status input from rear door switch LH

BACK DOOR SW [ON/OFF]

The switch status input from back door switch

KEY CYL LK-SW [ON/OFF]

Lock switch status input from door lock and unlock switch

KEY CYL UN-SW [ON/OFF]

Lock switch status input from door lock and unlock switch

CDL LOCK SW [ON/OFF]

Lock switch status input from door lock and unlock switch

CDL UNLOCK SW [ON/OFF]

Unlock switch status input from door lock and unlock switch

KEYLESS LOCK

1

 [ON/OFF]

Lock signal status received from remote keyless entry receiver (integrated in the 
BCM)

2009 Pathfinder

DIAGNOSIS SYSTEM (BCM)

INL-13

< FUNCTION DIAGNOSIS >

C

D

E

F

G

H

I

J

K

M

A

B

INL

N

O

P

1: With remote keyless entry

2: With Intelligent Key

ACTIVE TEST

BATTERY SAVER

BATTERY SAVER : CONSULT-III Function (BCM - BATTERY SAVER)

INFOID:0000000004404643

WORK SUPPORT

*: Initial setting

DATA MONITOR

KEYLESS UNLOCK

1

 [ON/OFF]

Unlock signal status received from remote keyless entry receiver (integrated in the 
BCM)

I-KEY LOCK

2

 [ON/OFF]

Lock signal status received from Intelligent Key unit by CAN communication

I-KEY UNLOCK

2

 [ON/OFF]

Unlock signal status received from Intelligent Key unit by CAN communication

Monitor Item

[Unit]

Description

Test Item

Operation

Description

INT LAMP

ON

Outputs the interior room lamp control signal to turn the interior room lamps ON.

OFF

Stops the interior room lamp control signal to turn the interior room lamps OFF.

IGN ILLUM

ON

Outputs the ignition keyhole illumination control signal to turn the ignition keyhole il-
lumination lamp ON.

OFF

Stops the ignition keyhole illumination control signal to turn the ignition keyhole illu-
mination lamp OFF.

STEP LAMP TEST

ON

Outputs the step lamp control signal to turn the step lamps ON.

OFF

Stops the step lamp control signal to turn the step lamps OFF.

LUGGAGE LAMP TEST

ON

Outputs the luggage lamp control signal to turn the luggage lamp ON.

OFF

Stops the luggage lamp control signal to turn the luggage lamp OFF.

Work Item

Setting Item

Setting

ROOM LAMP TIMER SET

MODE 1*

15 min.

Sets the interior room lamp battery saver timer operating 
time. 

MODE 2

30 min.

Monitor Item

[Unit]

Description

IGN ON SW [ON/OFF]

Ignition switch (ON) status judges from IGN signal (ignition power supply)

KEY ON SW [ON/OFF]

The switch status input from key switch

DOOR SW-DR [ON/OFF]

The switch status input from front door switch (driver side)

DOOR SW-AS [ON/OFF]

The switch status input from front door switch (passenger side)

DOOR SW-RR [ON/OFF]

The switch status input from rear door switch RH

DOOR SW- RL [ON/OFF]

The switch status input from rear door switch LH

BACK DOOR SW [ON/OFF]

The switch status input from back door switch

KEY CYL LK-SW [ON/OFF]

Lock switch status input from door key cylinder switch

KEY CYL UN-SW [ON/OFF]

Unlock switch status input from door key cylinder switch

CDL LOCK SW [ON/OFF]

Lock switch status input from door lock and unlock switch

CDL UNLOCK SW [ON/OFF]

Unlock switch status input from door lock and unlock switch

I-KEY LOCK

1

 [ON/OFF]

Lock signal status received from Intelligent Key unit by CAN communication

I-KEY UNLOCK

1

 [ON/OFF]

Unlock signal status received from Intelligent Key unit by CAN communication

2009 Pathfinder

INL-14

< FUNCTION DIAGNOSIS >

DIAGNOSIS SYSTEM (BCM)

1: With Intelligent Key

2: With remote keyless entry

ACTIVE TEST

*: Each lamp switch is in ON position.

KEYLESS LOCK

2

 [ON/OFF]

Lock signal status received from remote keyless entry receiver (integrated in the 
BCM)

KEYLESS UNLOCK

2

 [ON/OFF]

Unlock signal status received from remote keyless entry receiver (integrated in the 
BCM)

Monitor Item

[Unit]

Description

Test Item

Operation

Description

BATTERY SAVER

OFF

Cuts the interior room lamp power supply to turn interior room lamps OFF.

ON

Outputs the interior room lamp power supply to turn interior room lamps ON.*

2009 Pathfinder

POWER SUPPLY AND GROUND CIRCUIT

INL-15

< COMPONENT DIAGNOSIS >

C

D

E

F

G

H

I

J

K

M

A

B

INL

N

O

P

COMPONENT DIAGNOSIS

POWER SUPPLY AND GROUND CIRCUIT

BCM

BCM : Diagnosis Procedure

INFOID:0000000004404644

1.

 CHECK FUSES AND FUSIBLE LINK

Check that the following fuses and fusible link are not blown.

Is the fuse blown?

YES

>> Replace the blown fuse or fusible link after repairing the affected circuit.

NO

>> GO TO 2

2.

 CHECK POWER SUPPLY CIRCUIT

1.

Turn ignition switch OFF.

2.

Disconnect BCM.

3.

Check voltage between BCM harness connector and ground.

Is the measurement value normal?

YES

>> GO TO 3

NO

>> Repair or replace harness.

3.

 CHECK GROUND CIRCUIT

Check continuity between BCM harness connector and ground.

Does continuity exist?

YES

>> Inspection End.

NO

>> Repair or replace harness.

Terminal No.

Signal name

Fuses and fusible link No.

57

Battery power supply

18 (10A)

70

G (50A)

11

Ignition ACC or ON

4 (10A)

38

Ignition ON or START

1 (10A)

Connector

Terminals 

Power

source

Condition

Voltage (V) (Ap-

prox.)

(+)

(-)

M18

11

Ground

ACC 

power 

supply

Ignition 

switch 

ACC or 

ON

Battery voltage

38

Ground

Ignition 

power 

supply

Ignition 

switch ON 

or START

Battery voltage

M20

57

Ground

Battery 

power 

supply

Ignition 

switch 

OFF

Battery voltage

70

Ground

Battery 

power 

supply

Ignition 

switch 

OFF

Battery voltage

LIIA2415E

BCM

Ground

Continuity

Connector

Terminal

M20

67

Yes

LIIA0915E

2009 Pathfinder

INL-16

< COMPONENT DIAGNOSIS >

BATTERY SAVER OUTPUT/POWER SUPPLY CIRCUIT

BATTERY SAVER OUTPUT/POWER SUPPLY CIRCUIT

Description

INFOID:0000000003938851

Provides the battery saver output/power supply. Also cuts the power supply when the interior room lamp bat-
tery saver is activating.

Component Function Check

INFOID:0000000003938852

1.

CHECK BATTERY SAVER OUTPUT/POWER SUPPLY FUNCTION

CONSULT-III

1.

Turn ignition switch ON.

2.

Turn each interior room lamp ON.

-

Front room/map lamp assembly

-

Vanity lamps (if equipped)

-

Cargo lamp

-

Personal lamp 2nd row (with personal lamp 2nd row)

-

Room lamp 2nd row (without personal lamp 2nd row)

3.

Select “BATTERY SAVER” of BCM (BATTERY SAVER) active test item.

4.

 While operating the test item, check that each interior room lamp turns ON/OFF.

Is the inspection result normal?

YES

>> Battery saver output/power supply circuit is normal.

NO

>> Refer to 

INL-16, "Diagnosis Procedure"

.

Diagnosis Procedure

INFOID:0000000003938853

1.

CHECK BATTERY SAVER OUTPUT/POWER SUPPLY OUTPUT

CONSULT-III

1.

Turn ignition switch ON.

2.

Select “BATTERY SAVER” of BCM (BATTERY SAVER) active
test item.

3.

While operating the test item, check voltage between BCM con-
nector M20 terminal 56 and ground.

Is the inspection result normal?

YES

>> GO TO 2

NO

>> Replace BCM. Refer to 

BCS-59, "Removal and Installation"

.

2.

CHECK BATTERY SAVER OUTPUT/POWER SUPPLY OPEN CIRCUIT

1.

Turn ignition switch OFF.

2.

Disconnect the following connectors.

-

BCM  M20

-

Ignition keyhole illumination

-

Front room/map lamp assembly

-

Vanity lamp LH (if equipped)

-

Vanity lamp RH (if equipped)

-

Cargo lamp

-

Personal lamp 2nd row (with personal lamp 2nd row)

-

Room lamp 2nd row (without personal lamp 2nd row)

OFF

: Interior room lamp OFF

ON

: Interior room lamp ON

(+)

(-)

Test item

Voltage

Connector

Terminal

BATTERY SAVER

M20

56

Ground

OFF

0V

ON

Battery voltage

ALLIA0408GB

2009 Pathfinder