Nissan Quest E52. Manual - part 1247

WCS-18

< SYSTEM DESCRIPTION >

DIAGNOSIS SYSTEM (BCM)

DIAGNOSIS SYSTEM (BCM)

COMMON ITEM

COMMON ITEM : CONSULT Function (BCM - COMMON ITEM)

INFOID:0000000009969903

APPLICATION ITEM

CONSULT 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

NOTE:

*: For models with automatic air conditioning control system, this diagnosis mode is 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.

Diagnosis mode

Function Description

Work Support

Changes the setting for each system function.

Self Diagnostic Result

Displays the diagnosis results judged by BCM.

CAN Diag Support Monitor

Monitors the reception status of CAN communication viewed from BCM.

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 control system

INT LAMP

×

×

×

Exterior lamp

HEAD LAMP

×

×

×

Wiper and washer

WIPER

×

×

×

Turn signal and hazard warning lamps

FLASHER

×

×

×

Air conditioning control system

AIR CONDITONER

×

×

*

• Intelligent Key system
• Engine start system

INTELLIGENT KEY

×

×

×

Combination switch

COMB SW

×

Body control system

BCM

×

NVIS

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

×

×

×

WCS

DIAGNOSIS SYSTEM (BCM)

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< SYSTEM DESCRIPTION >

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NOTE:

*: Refer to the following for details of the power supply position.

• OFF (OFF, LOCK): Ignition switch OFF

• ACC: Ignition switch ACC

• IGN: Ignition switch ON with engine stopped

• RUN: Ignition switch ON with engine running

• CRANK: At engine cranking

Power supply position shifts to “OFF (LOCK)” from “OFF (OFF)”, when ignition switch is in the OFF position, shift position is in the P
position, and any of the following conditions are met.

• Closing door

• Opening door

• Door is locked using door request switch

• Door is locked using Intelligent Key

The power supply position shifts to “ACC” when the push-button ignition switch (push switch) is pushed at “OFF (LOCK)”.

BUZZER

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 OFF (LOCK)]

SLEEP>OFF

While turning BCM status from low power consumption mode to 
normal mode [Power supply position is OFF (OFF)]

LOCK>ACC

While turning power supply position from OFF (LOCK) to ACC

ACC>ON

While turning power supply position from ACC to ON

RUN>ACC

While turning power supply position from RUN to ACC (Except 
emergency stop operation)

CRANK>RUN

While turning power supply position from CRANK to RUN

RUN>URGENT

While turning power supply position from RUN to ACC (Emergen-
cy stop operation)

ACC>OFF

While turning power supply position from ACC to OFF (OFF)

OFF>LOCK

While turning power supply position from OFF (OFF) to OFF 
(LOCK)

OFF>ACC

While turning power supply position from OFF (OFF) to ACC

ON>CRANK

While turning power supply position from ON to CRANK

OFF>SLEEP

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

LOCK>SLEEP

While turning BCM status from normal mode [Power supply posi-
tion is OFF (LOCK)] to low power consumption mode

LOCK

Power supply position is OFF (LOCK)

OFF

Power supply position is OFF (OFF)

ACC

Power supply position is ACC

ON

Power supply position is ON

ENGINE RUN

Power supply position is RUN

CRANKING

Power supply position is CRANK

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.

WCS-20

< SYSTEM DESCRIPTION >

DIAGNOSIS SYSTEM (BCM)

BUZZER : CONSULT Function (BCM - BUZZER)

INFOID:0000000009650451

CONSULT APPLICATION ITEMS

DATA MONITOR

NOTE:
The following table includes information (items) inapplicable to this vehicle. For information (items) applicable
to this vehicle, refer to CONSULT display items.

ACTIVE TEST

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).

ID REGIST WARNING

The ID regist 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).

WCS

COMBINATION METER

WCS-21

< ECU DIAGNOSIS INFORMATION >

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ECU DIAGNOSIS INFORMATION

COMBINATION METER

Reference Value

INFOID:0000000009864205

VALUES ON THE DIAGNOSIS TOOL

NOTE:
The following table includes information (items) inapplicable to this vehicle. For information (items) applicable
to this vehicle, refer to CONSULT display items.

Monitor Item

Condition

Value/Status

SPEED METER
[km/h]

Ignition switch 
ON

While driving

Input value of vehicle speed signal 
(CAN communication signal)
NOTE:
655.35 is displayed when the malfunc-
tion signal is received

SPEED OUTPUT
[km/h]

Ignition switch 
ON

While driving

Output value of vehicle speed signal 
(CAN communication signal)
NOTE:
655.35 is displayed when the malfunc-
tion signal is received

ODO OUTPUT
[km/h or mph]

Ignition switch 
ON

—

Output value of odometer signal (CAN 
communication signal)

TACHO METER
[rpm]

Ignition switch 
ON

Engine running

Input value of engine speed signal 
(CAN communication signal)
NOTE:
8191.875 is displayed when the mal-
function signal is received

FUEL METER
[L]

Ignition switch 
ON

—

Input value of fuel level sensor signal

W TEMP METER
[

°

C]

Ignition switch 
ON

—

Input value of engine coolant tempera-
ture signal (CAN communication sig-
nal)
NOTE:
215 is displayed when the malfunction 
signal is input

ABS W/L

Ignition switch 
ON

ABS warning lamp ON

On

ABS warning lamp OFF

Off

VDC/TCS IND

Ignition switch 
ON

VDC OFF indicator lamp ON

On

VDC OFF indicator lamp OFF

Off

SLIP IND

Ignition switch 
ON

VDC warning lamp ON

On

VDC warning lamp OFF

Off

BRAKE W/L

Ignition switch 
ON

Brake warning lamp ON

On

Brake warning lamp OFF

Off

DOOR W/L

Ignition switch 
ON

Door open warning ON

On

Door open warning OFF

Off

HI-BEAM IND

Ignition switch 
ON

High-beam indicator lamp ON

On

High-beam indicator lamp OFF

Off

TURN IND

Ignition switch 
ON

Turn signal indicator lamp ON

On

Turn signal indicator lamp OFF

Off

LIGHT IND

Ignition switch 
ON

Position lamp indicator lamp ON

On

Position lamp indicator lamp OFF

Off