Nissan Titan A60. Manual - part 133

BCS-12

< SYSTEM DESCRIPTION >

[BCM]

SIGNAL BUFFER SYSTEM

SIGNAL BUFFER SYSTEM

System Diagram

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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.

BCS

POWER CONSUMPTION CONTROL SYSTEM

BCS-13

< SYSTEM DESCRIPTION >

[BCM]

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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 and combination meter) that operates 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 and combination meter via CAN communica-

tion.

• 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.

ALMIA0300GB

BCS-14

< SYSTEM DESCRIPTION >

[BCM]

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

Component Parts Location

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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-III 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

• Remote keyless entry receiver: Receiving

1.

Steering column (view with instru-
ment panel removed)

2.

BCM M18, M19, M20

3.

Combination meter M24

4.

IPDM E/R

ALMIA0302ZZ

BCS

DIAGNOSIS SYSTEM (BCM)

BCS-15

< SYSTEM DESCRIPTION >

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DIAGNOSIS SYSTEM (BCM)

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

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APPLICATION ITEM

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

SYSTEM APPLICATION

BCM can perform the following functions.

DOOR LOCK

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

HEADLAMP

×

×

×

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

×

×

×

Vehicle security system

THEFT ALM

×

×

×

RAP system

RETAINED PWR

×

×

×

Signal buffer system

SIGNAL BUFFER

×

×

TPMS

AIR PRESSURE MONITOR

×

×

×

×

Panic alarm system

PANIC ALARM

×