Nissan Xterra. Manual - part 469

INL-8

< SYSTEM DESCRIPTION >

INTERIOR ROOM LAMP CONTROL SYSTEM

Component Description

INFOID:0000000009483115

Part name

Description

BCM

Provides power and ground and controls timer functions for the 
interior room lamps and cargo lamp.

Key switch

Provides key in ignition status to the BCM. 

Door switches

Provides door OPEN/CLOSED status to the BCM. 

Back door switch

Provides back door OPEN/CLOSED status to the BCM. 

Main power window and door lock/unlock switch

Provides door lock/unlock position switch status to the BCM.

Power window and door lock/unlock switch RH

Front door lock assembly LH (key cylinder switch) 

Provides door lock/unlock status to the BCM. 

Back door key cylinder switch 

ILLUMINATION CONTROL SYSTEM

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ILLUMINATION CONTROL SYSTEM

System Diagram

INFOID:0000000009483116

System Description

INFOID:0000000009483117

The illumination lamps operation is dependent upon the position of the combination switch (lighting and turn

signal switch). When the combination switch (lighting and turn signal switch) is placed in the 1ST or 2ND posi-

tion 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 communica-

tion 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 combination switch (lighting and turn signal 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 10 minutes unless the combination switch (lighting and turn signal

switch) position is changed. If the combination switch (lighting and turn signal switch) position is changed, then

the illumination lamps are turned off after a 30 second delay. When the combination switch (lighting and turn

signal switch) is turned from OFF to 1ST or 2ND position after illumination lamps have been turned off by the

battery saver control, the illumination lamps illuminate again.

AWLIA2284GB

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ILLUMINATION CONTROL SYSTEM

Component Parts Location

INFOID:0000000009483118

Component Description

INFOID:0000000009483119

1.

IPDM E/R E122, E124

2.

Combination switch (lighting and turn 
signal switch) M28

3.

Combination meter M24

4.

Illumination control switch (built into 
combination meter)

5.

BCM M18, M20 (view with lower instru-
ment panel LH removed)

WKIA5029E

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 (lighting and turn signal switch)

The combination switch (lighting and turn signal switch) provides 
input to the BCM about the lighting switch position. 

DIAGNOSIS SYSTEM (BCM)

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DIAGNOSIS SYSTEM (BCM)

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

INFOID:0000000010242938

APPLICATION ITEM

CONSULT performs the following functions via CAN communication with BCM.

SYSTEM APPLICATION

BCM can perform the following functions.

INT LAMP

Direct Diagnostic Mode

Description

ECU Identification

The BCM part number is displayed.

Self Diagnostic Result

The BCM self diagnostic results are displayed.

Data Monitor

The BCM input/output data is displayed in real time.

Active Test

The BCM activates outputs to test components.

Work support

The settings for BCM functions can be changed.

Configuration

• The vehicle specification can be read and saved.
• The vehicle specification can be written when replacing BCM.

CAN Diag Support Mntr

The result of transmit/receive diagnosis of CAN communication is displayed.

System

Sub System

Direct Diagnostic Mode

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Door lock

DOOR LOCK

×

×

×

Rear window defogger

REAR DEFOGGER

×

×

Warning chime

BUZZER

×

×

Interior room lamp timer

INT LAMP

×

×

×

Remote keyless entry system

MULTI REMOTE ENT

×

×

×

Exterior lamp

HEAD LAMP

×

×

×

Wiper and washer

WIPER

×

×

×

Turn signal and hazard warning lamps FLASHER

×

×

Air conditioner

AIR CONDITIONER

×

Combination switch

COMB SW

×

BCM

BCM

×

×

×

×

×

Immobilizer

IMMU

×

×

×

Interior room lamp battery saver

BATTERY SAVER

×

×

×

Back door open

TRUNK

×

×

Vehicle security system

THEFT ALM

×

×

×

RAP system

RETAINED PWR

×

×

×

Signal buffer system

SIGNAL BUFFER

×

×

TPMS

AIR PRESSURE MONITOR

×

×

×

×

Panic alarm system

PANIC ALARM

×