Nissan Pathfinder (2012 year). Manual - part 79

BCS-12

< SYSTEM DESCRIPTION >

SIGNAL BUFFER SYSTEM

SIGNAL BUFFER SYSTEM

System Diagram

INFOID:0000000007354907

System Description

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OUTLINE

BCM has the signal transmission function that outputs/transmits each input/received signal to each unit.

Signal transmission function list

ALMIA0263GB

Signal name

Input

Output

Description

Oil pressure switch signal

IPDM E/R (CAN)

Combination meter (CAN)

Transmits the received oil pres-
sure switch signal via CAN 
communication.

August 2012

2012 Pathfinder

BCS

POWER CONSUMPTION CONTROL SYSTEM

BCS-13

< SYSTEM DESCRIPTION >

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POWER CONSUMPTION CONTROL SYSTEM

System Diagram

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System Description

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OUTLINE

• BCM incorporates a power consumption control function that reduces the power consumption according to

the vehicle status. 

• BCM switches the status (control mode) by itself with the power saving control function. It performs the sleep

request to each unit [IPDM E/R, combination meter and Intelligent Key unit (with Intelligent Key)] that oper-

ates with the ignition switch OFF.

Normal mode (wake-up)

- CAN communication is normally performed with other units

- Each control with BCM is operating properly

CAN communication sleep mode (CAN sleep)

- CAN transmission is stopped

- Control with BCM only is operating

Low power consumption mode (BCM sleep)

- Low power consumption control is active

- CAN transmission is stopped

LOW POWER CONSUMPTION CONTROL WITH BCM

BCM reduces the power consumption with the following operation in the low power consumption mode.

• The reading interval of the each switches changes from 10 ms interval to 20 ms interval.

Sleep mode activation

• BCM receives the sleep-ready signal (ready) from IPDM E/R, combination meter and Intelligent Key unit

(with Intelligent Key) via CAN communication.

• BCM transmits the sleep wake up signal (sleep) to each unit when all of the CAN sleep conditions are ful-

filled.

• Each unit stops the transmission of CAN communication with the sleep wake up signal. BCM is in CAN com-

munication sleep mode.

• BCM is in the low power consumption mode and perform the low power consumption control when all of the

BCM sleep conditions are fulfilled with CAN sleep condition.

AWMIA0019GB

August 2012

2012 Pathfinder

BCS-14

< SYSTEM DESCRIPTION >

POWER CONSUMPTION CONTROL SYSTEM

Sleep condition

Wake-up operation

• BCM transmits sleep wake up signal (wake up) to each unit when any condition listed below is established,

and then goes into normal mode from low power consumption mode.

• Each unit starts transmissions with CAN communication by receiving sleep wake up signals. Each unit trans-

mits wake up signals to BCM with CAN communication to convey the start of CAN communication.

Wake-up condition

CAN sleep condition

BCM sleep condition

• Receiving the sleep-ready signal (ready) from all units
• Ignition switch: OFF
• Vehicle security system alarm: No operation
• Warning lamp: No operation
• Warning chime: No operation
• Stop lamp switch: OFF
• Key switch status: No change for 2 seconds
• Hazard warning lamp: No operation
• Exterior  lamp:  OFF
• Door lock status: No change for 2 seconds
• CONSULT communication status: No communication
• Door switch status: No change for 2 seconds

The controls only BCM are completed.
(Interior room lamp battery saver: Time out etc.)

BCM wake-up condition

• Ignition switch: OFF 

→

 ACC or ON

• Stop lamp switch: ON (Depress brake pedal)
• Any door switch: OFF 

→

 ON

• Lighting switch: OFF 

→

 1ST or PASS

• Hazard switch: OFF 

→

 ON

• Back door opener switch OFF 

→

 ON

• Remote keyless entry receiver: Receiving (with remote keyless entry)
• Intelligent Key unit: Receiving (with Intelligent Key)

August 2012

2012 Pathfinder

BCS

POWER CONSUMPTION CONTROL SYSTEM

BCS-15

< SYSTEM DESCRIPTION >

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Component Parts Location

INFOID:0000000007354911

1.

BCM M18, M19, M20 (view with low-
er instrument lower panel LH re-
moved)

2.

Combination meter M24

3.

Intelligent Key unit M164 (with Intelli-
gent Key) (view with glove box re-
moved)

4.

IPDM E/R

ALMIA0309ZZ

August 2012

2012 Pathfinder

BCS-16

< SYSTEM DESCRIPTION >

DIAGNOSIS SYSTEM (BCM)

DIAGNOSIS SYSTEM (BCM)

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

INFOID:0000000007354912

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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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

×

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

×

×

×

Signal buffer system

SIGNAL BUFFER

×

×

TPMS

AIR PRESSURE MONITOR

×

×

×

×

Panic alarm system

PANIC ALARM

×

August 2012

2012 Pathfinder

BCS

DIAGNOSIS SYSTEM (BCM)

BCS-17

< SYSTEM DESCRIPTION >

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DOOR LOCK
DOOR LOCK : CONSULT Function (BCM - DOOR LOCK)

INFOID:0000000007354913

DATA MONITOR

* : with Intelligent Key
** : without Intelligent Key

ACTIVE TEST

WORK SUPPORT

* : Initial setting

Monitor Item [Unit]

Description

IGN ON SW [On/Off]

Indicates condition of ignition switch ON position.

KEY ON SW [On/Off]

Indicates condition of key switch.

CDL LOCK SW [On/Off]

Indicates condition of lock signal from door lock and unlock switch.

CDL UNLOCK SW [On/Off]

Indicates condition of unlock signal from door lock and unlock switch.

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.

BACK DOOR SW [On/Off]

Indicates condition of back door switch.

KEY CYL LK-SW [On/Off]

Indicates condition of lock signal from door key cylinder switch.

KEY CYL UN-SW [On/Off]

Indicates condition of unlock signal from door key cylinder switch.

I-KEY LOCK* [On/Off]

Indicates condition of lock signal from Intelligent Key.

I-KEY UNLOCK* [On/Off]

Indicates condition of unlock signal from Intelligent Key.

KEYLESS LOCK** [On/Off]

Indicates condition of lock signal from keyfob.

KEYLESS UNLOCK** [On/Off]

Indicates condition of unlock signal from keyfob.

Test Item

Description

DOOR LOCK

This test is able to check door lock operation [OTR ULK/DR UNLK/ALL ULK/ALL LCK].

Support Item

Setting

Description

DOOR LOCK-UNLOCK SET

On*

Automatic door locks function ON.

Off

Automatic door locks function OFF.

ANTI-LOCK OUT SET

Off

Anti lock out function OFF.

On*

Anti lock out function ON.

AUTOMATIC DOOR LOCK SELECT

SHIFT OUT 
OF P

Doors lock automatically when shifted out of park (P).

VH SPD*

Doors lock automatically when vehicle speed reaches 24 km/h (15 mph).

AUTOMATIC DOOR UNLOCK
SELECT

MODE6

Drivers door unlocks automatically when key is removed.

MODE5

Drivers door unlocks automatically when shifted into park (P).

MODE4

Drivers door unlocks automatically when ignition is switched from ON to OFF.

MODE3

Doors unlock automatically when key is removed.

MODE2

Doors unlock automatically when shifted into park (P).

MODE1*

Doors unlock automatically when ignition is switched from ON to OFF.

AUTOMATIC LOCK/UNLOCK
SELECT

On*

Automatic lock/unlock function ON.

Off

Automatic lock/unlock function OFF.

August 2012

2012 Pathfinder

BCS-18

< SYSTEM DESCRIPTION >

DIAGNOSIS SYSTEM (BCM)

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

INFOID:0000000007354914

DATA MONITOR

ACTIVE TEST

BUZZER
BUZZER : CONSULT Function (BCM - BUZZER)

INFOID:0000000007354915

DATA MONITOR

ACTIVE TEST

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

INFOID:0000000007354916

DATA MONITOR

Monitor Item [Unit]

Description

IGN ON SW [On/Off]

Indicates condition of ignition switch ON position.

ACC ON SW [On/Off]

Indicates condition of ignition switch ACC position.

REAR DEF SW [On/Off]

Indicates condition of rear window defogger switch.

Test Item

Description

REAR DEFOGGER

This test is able to check rear window defogger operation [Off/On].

Monitor Item [Unit]

Description

DOOR SW-DR [On/Off]

Indicates condition of front door switch LH.

IGN ON SW [On/Off]

Indicates condition of ignition switch ON position.

KEY ON SW [On/Off]

Indicates condition of key switch.

LIGHT SW 1ST [On/Off]

Indicates condition of combination switch.

BUCKLE SW [On/Off]

Indicates condition of seat belt buckle switch.

Test Item

Description

SEAT BELT WARN TEST

This test is able to check seat belt warning operation [Off/On].

LIGHT WARN ALM

This test is able to check light reminder warning operation [Off/On].

IGN KEY WARN ALM

This test is able to check key warning chime operation [Off/On].

Monitor Item [Unit]

Description

IGN ON SW [On/Off]

Indicates condition of ignition switch ON position.

KEY ON SW [On/Off]

Indicates condition of key switch.

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.

BACK DOOR SW [On/Off]

Indicates condition of back door switch.

KEY CYL LK-SW [On/Off]

Indicates condition of lock signal from door key cylinder switch.

KEY CYL UN-SW [On/Off]

Indicates condition of unlock signal from door key cylinder switch.

CDL LOCK SW [On/Off]

Indicates condition of lock signal from door lock and unlock switch.

August 2012

2012 Pathfinder

BCS

DIAGNOSIS SYSTEM (BCM)

BCS-19

< SYSTEM DESCRIPTION >

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* : with Intelligent Key
** : without Intelligent Key

ACTIVE TEST

WORK SUPPORT

* : Initial setting

MULTI REMOTE ENT
MULTI REMOTE ENT : CONSULT Function (BCM - MULTI REMOTE ENT)

INFOID:0000000007354917

DATA MONITOR

CDL UNLOCK SW [On/Off]

Indicates condition of unlock signal from door lock and unlock switch.

I-KEY LOCK* [On/Off]

Indicates condition of lock signal from Intelligent Key.

I-KEY UNLOCK* [On/Off]

Indicates condition of unlock signal from Intelligent Key.

KEYLESS LOCK** [On/Off]

Indicates condition of lock signal from keyfob.

KEYLESS UNLOCK** [On/Off]

Indicates condition of unlock signal from keyfob.

Monitor Item [Unit]

Description

Test Item

Description

IGN ILLUM

This test is able to check ignition keyhole illumination operation [Off/On].

INT LAMP

This test is able to check interior room lamp operation [Off/On].

LUGGAGE LAMP TEST

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

Support Item

Setting

Description

SET I/L D-UNLCK INTCON

Off

Interior room lamp timer function OFF.

On*

Interior room lamp timer function ON.

ROOM LAMP ON TIME SET

MODE7

0 sec.

Sets the interior room lamp gradual brightening time.

MODE6

5 sec.

MODE5

4 sec.

MODE4

3 sec.

MODE3

2 sec.

MODE2*

1 sec.

MODE1

0.5 sec.

ROOM LAMP OFF TIME SET

MODE7

0 sec.

Sets the interior room lamp gradual dimming time.

MODE6

5 sec.

MODE5

4 sec.

MODE4

3 sec.

MODE3

2 sec.

MODE2*

1 sec.

MODE1

0.5 sec.

Monitor Item [Unit]

Description

IGN ON SW [On/Off]

Indicates condition of ignition switch ON position.

KEY ON SW [On/Off]

Indicates condition of key switch.

ACC ON SW [On/Off]

Indicates condition of ignition switch ACC position.

KEYLESS LOCK [On/Off]

Indicates condition of lock signal from keyfob.

KEYLESS UNLOCK [On/Off]

Indicates condition of unlock signal from keyfob.

August 2012

2012 Pathfinder