Nissan Pathfinder. Manual - part 581

EXL-12

< SYSTEM DESCRIPTION >

SYSTEM

FRONT FOG LAMP OPERATION

When the lighting switch position is in the AUTO (if equipped and activated) or headlamp, and the front fog

lamp position,  the BCM detects front fog lamp signal and then sends a front fog lamp request ON signal via

the CAN communication lines to the IPDM E/R. The IPDM E/R then turns ON the front fog lamp relay sending

power to the front fog lamps.

TRAILER TOW SYSTEM
TRAILER TOW SYSTEM : System Diagram

INFOID:0000000009175345

TRAILER TOW SYSTEM : System Description

INFOID:0000000009175346

TRAILER TAIL LAMP OPERATION

The trailer tail lamps are controlled by the trailer tow relay 1. With the combination switch (lighting and turn sig-

nal switch) in the AUTO (if equipped and activated) or parking lamp position, the BCM detects the lighting

switch signal and then sends a parking light ON request via the CAN communication lines to the IPDM E/R.

The IPDM E/R then activates the tail lamp relay which activates the trailer tow relay 1 and sends power to the

trailer connector.

TRAILER TURN SIGNAL LAMP OPERATION

The trailer turn signal lamps are controlled by the BCM. When the turn signal switch is in the LH or RH position

with the ignition switch ON, the combination switch (lighting and turn signal switch) sends a signal to the BCM.

The BCM detects the TURN RH or TURN LH ON request. The BCM sends a control signal to the respective

trailer turn relay which sends power to the trailer connector.

TRAILER HAZARD LAMP OPERATION

The trailer hazard lamps are controlled by the BCM. When the hazard switch is pressed, the BCM detects the

hazard ON request. The BCM then sends a control signal to both trailer turn relays which sends power to the

trailer connector.

TRAILER BRAKE LAMP OPERATION

The trailer brake lamps operate when the brake pedal is pressed sending the stop lamp switch signal to the

trailer connector. 

AWLIA1959GB

DIAGNOSIS SYSTEM (BCM)

EXL-13

< SYSTEM DESCRIPTION >

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DIAGNOSIS SYSTEM (BCM)

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

INFOID:0000000009764001

CAUTION:

After disconnecting the CONSULT vehicle interface (VI) from the data link connector, the ignition must

be cycled OFF 

→ ON (for at least 5 seconds) → OFF. If this step is not performed, the BCM may not go

to ”sleep mode”, potentially causing a discharged battery and no-start condition. 

APPLICATION ITEM

CONSULT performs the following functions via CAN communication with BCM.

SYSTEM APPLICATION

BCM can perform the following functions.

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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CAN Diag 

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Door lock

DOOR LOCK

×

×

×

×

Rear window defogger

REAR DEFOGGER

×

×

×

Warning chime

BUZZER

×

×

Interior room lamp timer

INT LAMP

×

×

×

Exterior lamp

HEADLAMP

×

×

×

Wiper and washer

WIPER

×

×

×

Turn signal and hazard warning lamps FLASHER

×

×

Air conditioner

AIR CONDITIONER

×

Intelligent Key system

INTELLIGENT KEY

×

×

×

×

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

×

EXL-14

< SYSTEM DESCRIPTION >

DIAGNOSIS SYSTEM (BCM)

HEADLAMP
HEADLAMP : CONSULT Function (BCM - HEADLAMP)

INFOID:0000000009764002

CAUTION:

After disconnecting the CONSULT vehicle interface (VI) from the data link connector, the ignition must

be cycled OFF 

→ ON (for at least 5 seconds) → OFF. If this step is not performed, the BCM may not go

to ”sleep mode”, potentially causing a discharged battery and no-start condition. 

DATA MONITOR

ACTIVE TEST

Signal buffer system

SIGNAL BUFFER

×

TPMS

AIR PRESSURE MONITOR

×

×

×

×

System

Sub System

Direct Diagnostic Mode

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CAN Diag 

Support Mntr

Monitor Item [Unit]

Description

PUSH SW [On/Off]

Indicates condition of push-button ignition switch.

ENGINE STATE [STOP/STALL/CRANK/
RUN]

Indicates engine status received from ECM on CAN communication line.

VEH SPEED 1 [km/h]

Indicates vehicle speed signal received from ABS on CAN communication line.

TURN SIGNAL R [On/Off]

Indicates condition of combination switch.

TURN SIGNAL L [On/Off]

TAIL LAMP SW [On/Off]

HI BEAM SW [On/Off]

HEAD LAMP SW 1 [On/Off]

HEAD LAMP SW 2 [On/Off]

PASSING SW [On/Off]

AUTO LIGHT SW [On/Off]

FR FOG SW [On/Off]

DOOR SW-DR [On/Off]

Indicates condition of front door switch LH.

DOOR SW-AS [On/Off]

Indicates condition of front door switch RH.

DOOR SW-RR [On/Off]

Indicates condition of rear door switch RH.

DOOR SW-RL [On/Off]

Indicates condition of rear door switch LH.

DOOR SW-BK [On/Off]

Indicates condition of back door switch.

OPTI SEN (DTCT) [V]

Indicates outside brightness voltage signal from optical sensor.

OPTI SEN (FILT) [V]

Indicates outside brightness voltage signal from optical sensor filtered by BCM.

Test Item

Description

FR FOG LAMP

This test is able to check front fog lamp operation [On/Off].

DAYTIME RUNNING LIGHT

This test is able to check daytime running lamp operation [On/Off].

ILL DIM SIGNAL

This test is able to check head lamp illumination dimming operation [On/Off].

DIAGNOSIS SYSTEM (BCM)

EXL-15

< SYSTEM DESCRIPTION >

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WORK SUPPORT

* : Initial setting

FLASHER
FLASHER : CONSULT Function (BCM - FLASHER)

INFOID:0000000009764003

CAUTION:

After disconnecting the CONSULT vehicle interface (VI) from the data link connector, the ignition must

be cycled OFF 

→ ON (for at least 5 seconds) → OFF. If this step is not performed, the BCM may not go

to ”sleep mode”, potentially causing a discharged battery and no-start condition. 

DATA MONITOR

ACTIVE TEST

Support Item

Setting

Description

TWILIGHT ON

MODE2*

Autolamp function ON.

MODE1

Autolamp function OFF.

WIPER LINK

MODE4

This mode is not used.

MODE3*

Wiper link function operates in INT, LOW and HI.

MODE2

Wiper link function operates in LOW and HI.

MODE1

Wiper link function OFF.

CUSTOM A/LIGHT SETTING

MODE4

Less sensitive than normal setting (turns ON later).

MODE3

More sensitive than MODE2.

MODE2

More sensitive than normal setting (turns ON earlier).

MODE1*

Normal setting.

ILL DELAY SET

MODE 8

Autolamp delay timer.

MODE 7

MODE 6

MODE 4

MODE 5

MODE 3

MODE 2

MODE 1*

Monitor Item [Unit]

Description

REQ SW -DR [On/Off]

Indicates condition of door request switch LH.

REQ SW -AS [On/Off]

Indicates condition of door request switch RH.

PUSH SW [On/Off]

Indicates condition of push-button ignition switch.

TURN SIGNAL R [On/Off]

Indicates condition of turn signal function of combination switch.

TURN SIGNAL L [On/Off]

HAZARD SW [On/Off]

Indicates condition of hazard switch.

RKE-LOCK [On/Off]

Indicates condition of  lock signal from Intelligent Key.

RKE-UNLOCK [On/Off]

Indicates condition of  unock signal from Intelligent Key.

RKE-PANIC [On/Off]

Indicates condition of  panic alarm signal from Intelligent Key.

Test Item

Description

FLASHER

This test is able to check turn signal lamp operation [Off/LH/RH].