Infiniti QX56 (Z62). Manual - part 100

BCS-14

< SYSTEM DESCRIPTION >

DIAGNOSIS SYSTEM (BCM)

DIAGNOSIS SYSTEM (BCM)

COMMON ITEM

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

INFOID:0000000006274796

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.

×

: Applicable item

*: This item is indicated, but not used.

FREEZE FRAME DATA (FFD)

The BCM records the following vehicle condition at the time a particular DTC is detected, and displays on
CONSULT-III.

Diagnosis mode

Function Description

Work Support

Changes the setting for each system function.

Self Diagnostic Result

Displays the diagnosis results judged by BCM. Refer to 

BCS-57, "DTC Index"

.

CAN Diag Support Monitor

Monitors the reception status of CAN communication viewed from BCM. Refer to CONSULT-III opera-
tion manual.

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

• Read and save the vehicle specification.
• Write the vehicle specification when replacing BCM.

System

Sub system selection item

Diagnosis mode

Work Support

Data Monitor

Active Test

Door lock

DOOR LOCK

×

×

×

Rear window defogger

REAR DEFOGGER

×

×

Warning chime

BUZZER

×

×

Interior room lamp timer

INT LAMP

×

×

×

Exterior lamp

HEAD LAMP

×

×

×

Wiper and washer

WIPER

×

×

×

Turn signal and hazard warning lamps

FLASHER

×

×

×

—

AIR CONDITONER*

×

×

• Intelligent Key system
• Engine start system

INTELLIGENT KEY

×

×

×

Combination switch

COMB SW

×

Body control system

BCM

×

IVIS

IMMU

×

×

×

Interior room lamp battery saver

BATTERY SAVER

×

×

×

Back door

TRUNK

×

Vehicle security system

THEFT ALM

×

×

×

RAP system

RETAINED PWR

×

Signal buffer system

SIGNAL BUFFER

×

×

BCS

DIAGNOSIS SYSTEM (BCM)

BCS-15

< SYSTEM DESCRIPTION >

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DOOR LOCK

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

INFOID:0000000006376454

BCM CONSULT-III FUNCTION

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

WORK SUPPORT

CONSULT screen item

Indication/Unit

Description

Vehicle Speed

km/h

Vehicle speed of the moment a particular DTC is detected

Odo/Trip Meter

km

Total mileage (Odometer value) of the moment a particular DTC is detected

Vehicle Condition

SLEEP>LOCK

Power position status of 
the moment a particular 
DTC is detected

While turning BCM status from low power consumption mode to 
normal mode (Power supply position is “LOCK”)

SLEEP>OFF

While turning BCM status from low power consumption mode to 
normal mode (Power supply position is “OFF”.)

LOCK>ACC

While turning power supply position from “LOCK” to “ACC”

ACC>ON

While turning power supply position from “ACC” to “IGN”

RUN>ACC

While turning power supply position from “RUN” to “ACC” (Vehicle 
is stopping and selector lever is except P position.)

CRANK>RUN

While turning power supply position from “CRANKING” to “RUN” 
(From cranking up the engine to run it)

RUN>URGENT

While turning power supply position from “RUN“ to “ACC” (Emer-
gency stop operation)

ACC>OFF

While turning power supply position from “ACC” to “OFF”

OFF>LOCK

While turning power supply position from “OFF” to “LOCK”

OFF>ACC

While turning power supply position from “OFF” to “ACC”

ON>CRANK

While turning power supply position from “IGN” to “CRANKING”

OFF>SLEEP

While turning BCM status from normal mode (Power supply posi-
tion is “OFF”.) to low power consumption mode

LOCK>SLEEP

While turning BCM status from normal mode (Power supply posi-
tion is “LOCK”.) to low power consumption mode

LOCK

Power supply position is “LOCK” (Ignition switch OFF with steer-
ing is locked.)

OFF

Power supply position is “OFF” (Ignition switch OFF with steering 
is unlocked.)

ACC

Power supply position is “ACC” (Ignition switch ACC)

ON

Power supply position is “IGN” (Ignition switch ON with engine 
stopped)

ENGINE RUN

Power supply position is “RUN” (Ignition switch ON with engine 
running)

CRANKING

Power supply position is “CRANKING” (At engine cranking)

IGN Counter

0 - 39

The number of times that ignition switch is turned ON after DTC is detected
• The number is 0 when a malfunction is detected now.
• The number increases like 1 

→

 2 

→

 3...38 

→

 39 after returning to the normal condition 

whenever ignition switch OFF 

→

 ON.

• The number is fixed to 39 until the self-diagnosis results are erased if it is over 39.

BCS-16

< SYSTEM DESCRIPTION >

DIAGNOSIS SYSTEM (BCM)

DATA MONITOR

ACTIVE TEST

REAR WINDOW DEFOGGER

Monitor item

Description

DOOR LOCK-UNLOCK SET

Selective unlock function mode can be changed to operation with this mode
• On: Operate
• Off: Non-operation

AUTOMATIC DOOR LOCK SE-
LECT

Automatic door lock function mode can be selected from the following in this mode
• VH SPD: All doors are locked when vehicle speed more than 24 km/h (15 MPH)
• P RANGE: All doors are locked when shifting the selector lever from P position to other than 

the P position

AUTOMATIC DOOR UNLOCK 
SELECT

Automatic door unlock function mode can be selected from the following in this mode
• MODE 1: All doors are unlocked when the power supply position is changed from ON to 

OFF

• MODE 2: All doors are unlocked when shifting the selector lever from any position other 

than the P to P position

• MODE 3: Driver side door is unlocked when the power supply position is changed from ON 

to OFF

• MODE 4: Driver side door is unlocked when shifting the selector lever from any position oth-

er than the P to P position

• MODE 5: This item is displayed, but cannot be used
• MODE 6: This item is displayed, but cannot be used

AUTOMATIC LOCK/UNLOCK 
SET

Automatic door lock/unlock function mode can be selected from the following in this mode
• Off: Non-operation
• Unlock Only: Door unlock operation only
• Lock Only: Door lock operation only
• Lock/Unlock: Lock and unlock operation

Monitor Item

Contents

REQ SW-DR

Indicated [On/Off] condition of door request switch (driver side)

REQ SW-AS

Indicated [On/Off] condition of door request switch (passenger side)

REQ SW-BD/TR

Indicated [On/Off] condition of back door request switch

DOOR SW-DR

Indicated [On/Off] condition of front door switch (driver side)

DOOR SW-AS

Indicated [On/Off] condition of front door switch (passenger side)

DOOR SW-RR

Indicated [On/Off] condition of rear door switch RH

DOOR SW-RL

Indicated [On/Off] condition of rear door switch LH

DOOR SW-BK

Indicated [On/Off] condition of back door switch

CDL LOCK SW

Indicated [On/Off] condition of lock signal from door lock unlock switch

CDL UNLOCK SW

Indicated [On/Off] condition of unlock signal from door lock unlock switch

KEY CYL LK-SW

Indicated [On/Off] condition of lock signal from door key cylinder switch

KEY CYL UN-SW

Indicated [On/Off] condition of unlock signal from door key cylinder switch

Test item

Description

DOOR LOCK

This test is able to check door lock/unlock operation
• The all door lock actuators are locked when “ALL LOCK” on CONSULT-III screen is touched
• The all door lock actuators are unlocked when “ALL UNLK” on CONSULT-III screen is touched
• The front door lock actuator (driver side) is unlocked when “DR UNLK” on CONSULT-III screen 

is touched

• The front door lock actuator (passenger side) is unlocked when “AS UNLK” on CONSULT- III 

screen is touched

• The door lock actuator (other) is unlocked when “OTR ULK” on CONSULT-III screen is touched

BCS

DIAGNOSIS SYSTEM (BCM)

BCS-17

< SYSTEM DESCRIPTION >

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

INFOID:0000000006376460

Data monitor

ACTIVE TEST

BUZZER

BUZZER : CONSULT-III Function (BCM - BUZZER)

INFOID:0000000006376483

CONSULT-III APPLICATION ITEMS

DATA MONITOR

ACTIVE TEST

INT LAMP

Monitor Item

Description

REAR DEF SW

Displays “Press (ON)/other (OFF)” status determined with the rear window defogger switch.

PUSH SW

Indicates [ON/OFF] condition of push switch.

Test Item

Description

REAR DEFOGGER

Give a drive signal to the rear window defogger relay to activate it.

Test item

Diagnosis mode

Description

BUZZER

Data Monitor

Displays BCM input data in real time.

Active Test

Operation of electrical loads can be checked by sending driving signal to them.

Display item

[Unit]

Description

PUSH SW
[On/Off]

Status of push-button ignition switch judged by BCM.

UNLK SEN-DR
[On/Off]

Status of unlock sensor judged by BCM.

VEH SPEED 1
[km/h]

Value of vehicle speed signal received from combination meter with CAN communication line.

TAIL LAMP SW
[On/Off]

Status of lighting switch judged by BCM using the combination switch readout function.

FR FOG SW
[On/Off]

Status of front fog lamp switch judged by BCM using the combination switch readout function.

DOOR SW-DR
[On/Off]

Status of driver side door switch judged by BCM.

CDL LOCK SW
[On/Off]

Status of door lock unlock switch judged by BCM.

Display item

[Unit]

Description

SEAT BELT WARN TEST

The seat belt warning chime operation can be checked by operating the relevant function (On/Off).

LIGHT WARN ALM

The light warning chime operation can be checked by operating the relevant function (On/Off).