Nissan Qashqai (2007-2010). Manual - part 1457

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< FUNCTION DIAGNOSIS >

REAR WINDOW DEFOGGER SYSTEM

FUNCTION DIAGNOSIS

REAR WINDOW DEFOGGER SYSTEM

System Diagram

INFOID:0000000000951258

System Description

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OPERATION DESCRIPTION

• BCM detects that the rear window defogger switch is turned ON when the ignition switch is ON, and then

transmits the rear window defogger switch signal to IPDM E/R via CAN communication for approximately 15
minutes.

• IPDM E/R turns rear window defogger relay ON when it receives the rear window defogger switch signal.

Then, it transmits the rear window defogger ON signal to ECM via CAN communication.

• The power is supplied to the rear window defogger and door mirror defogger (with mirror defogger) when the

rear window defogger relay is turned ON.

TIMER FUNCTION

• BCM transmits the rear window defogger switch signal to IPDM E/R for approximately 15 minutes when the

rear window defogger switch is turned ON with the ignition switch ON. Then, IPDM E/R operates the rear
window defogger and door mirror defogger (with mirror defogger).

• The timer is cancelled if the rear window defogger switch is pressed again during timer operation. BCM

stops the output of rear window defogger switch signal. The same reaction also occurs during timer opera-
tion if the ignition switch is turned OFF.

INPUT/OUTPUT SIGNAL CHART

*: With mirror defogger

Component Parts Location

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JMLIA0030GB

Switch

Input signal to BCM

BCM function

Acutuator

Rear window defogger switch

Defogger switch signal

Rear window defogger & Door mir-

ror defogger

*

 control

Rear window defogger

Door mirror defogger 

*

Ignition switch

Ignition signal

REAR WINDOW DEFOGGER SYSTEM

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< FUNCTION DIAGNOSIS >

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Component Description

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*With mirror defogger

JMLIA0031ZZ

1.

BCM M65,M66,M67

2.

IPDM E/R E10,E12,E14

3.

Rear window defogger switch (built 
in AUTO AMP. M53)

4.

Rear window defogger switch (built in 
heater control panel M54)

5.

 Rear window defogger B58

6.

 Rear window defogger D155

A.

Behind glove box

B.

Engine room dash panel (LH)

C.

Behind back door trim finisher

BCM

• Operates the rear window defogger with the operation of rear window defogger 

switch.

• Performs the timer control of rear window defogger.

Rear window defogger relay

• Operates the rear window defogger and the door mirror defogger

* 

with the control sig-

nal from IPDM E/R.

Auto amp. / Heter control panel
(Rear window defogger switch)

• The rear window defogger switch is installed.
• Turns the indicator lamp ON when detecting the operation of rear window defogger.

Rear window defogger

• Heats the heating wire with the power supply from the rear window defogger relay to 

prevent the rear window from fogging up.

Door mirror defogger

*

• Heats the heating wire with the power supply from the rear window defogger relay to 

prevent the door mirror from fogging up.

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< FUNCTION DIAGNOSIS >

DIAGNOSIS SYSTEM (BCM)

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 for each system.
NOTE:
It can perform the diagnosis modes except the following for all sub system selection items.

REAR WINDOW DEFOGGER

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

INFOID:0000000000951263

Data monitor

Diagnosis mode

Function Description

WORK SUPPORT

Changes the setting for each system function.

SELF-DIAG RESULTS

Displays the diagnosis results judged by BCM. Refer to 

BCS-61, "DTC Index"

.

CAN DIAG SUPPORT MNTR

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

• Enables to read and save the vehicle specification.
• Enables to write the vehicle specification when replacing BCM.

System

Sub system selection item

Diagnosis mode

WORK SUPPORT

DATA MONITOR

ACTIVE TEST

—

BCM

×

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 CONDITONER

×

Intelligent Key system

INTELLIGENT KEY

×

Combination switch

COMB SW

×

Immobilizer

IMMU

×

×

Interior room lamp battery saver

BATTERY SAVER

×

×

×

Trunk open

TRUNK

×

Vehicle security system

THEFT ALM

×

×

×

Signal buffer system

SIGNAL BUFFER

×

×

PTC heater system

PTC HEATER

×

×

DIAGNOSIS SYSTEM (BCM)

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ACTIVE TEST

Monitor Item

Description

REAR DEF SW

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

IGN ON SW

Indicates [ON/OFF] condition of ignition switch in ON position.

ACC ON SW

Indicates [ON/OFF] condition of ignition switch in ACC position.

Test Item

Description

REAR DEFOGGER

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