Nissan Xterra. Manual - part 179

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DRIVER CONTROLS

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SECTION 

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CONTENTS

DEFOGGER

BASIC INSPECTION  ....................................

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DIAGNOSIS AND REPAIR WORKFLOW  ..........

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Repair Work Flow ......................................................

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SYSTEM DESCRIPTION  ..............................

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REAR WINDOW DEFOGGER SYSTEM .............

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System Diagram ........................................................

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System Description  ...................................................

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Component Parts Location ........................................

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Component Description .............................................

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DIAGNOSIS SYSTEM (BCM)  .............................

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COMMON ITEM ...........................................................

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

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REAR DEFOGGER  .....................................................

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

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DTC/CIRCUIT DIAGNOSIS  ..........................

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REAR WINDOW DEFOGGER SWITCH  .............

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Description ................................................................

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Component Function Check ......................................

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Diagnosis Procedure .................................................

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REAR WINDOW DEFOGGER RELAY  ...............

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Description ................................................................

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Component Function Check ......................................

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Diagnosis Procedure .................................................

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REAR WINDOW DEFOGGER POWER SUP-
PLY AND GROUND CIRCUIT ............................

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Description ..............................................................

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Component Function Check ....................................

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Diagnosis Procedure ...............................................

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Component Inspection  ............................................

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DOOR MIRROR DEFOGGER LH  ......................

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Description ...............................................................

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Component Function Check  ....................................

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Diagnosis Procedure  ...............................................

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Component Inspection .............................................

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DOOR MIRROR DEFOGGER RH .....................

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Description ...............................................................

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Component Function Check  ....................................

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Diagnosis Procedure  ...............................................

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Component Inspection .............................................

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ECU DIAGNOSIS INFORMATION ..............

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BCM (BODY CONTROL MODULE)  .................

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Reference Value ......................................................

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Terminal Layout .......................................................

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Physical Values  .......................................................

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WIRING DIAGRAM ......................................

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REAR WINDOW DEFOGGER  ..........................

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Wiring Diagram ........................................................

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SYMPTOM DIAGNOSIS  ..............................

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REAR WINDOW DEFOGGER AND DOOR 
MIRROR DEFOGGER DO NOT OPERATE.  ....

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Diagnosis Procedure  ...............................................

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REAR WINDOW DEFOGGER DOES NOT 
OPERATE BUT BOTH OF DOOR MIRROR 
DEFOGGER OPERATE. ...................................

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Diagnosis Procedure  ...............................................

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BOTH DOORS MIRROR DEFOGGER DON’T 
OPERATE BUT REAR WINDOW DEFOG-
GER OPERATES  ..............................................

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Diagnosis Procedure  ...............................................

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DRIVER SIDE DOOR MIRROR DEFOGGER 
DOES NOT OPERATE. .....................................

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Diagnosis Procedure  ...............................................

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DEF-2

PASSENGER SIDE DOOR MIRROR DEFOG-
GER DOES NOT OPERATE.  ............................

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Diagnosis Procedure  ..............................................

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REAR WINDOW DEFOGGER SWITCH DOES 
NOT LIGHT, BUT REAR WINDOW DEFOG-
GER OPERATES ...............................................

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Diagnosis Procedure  ..............................................

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PRECAUTION .............................................

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PRECAUTIONS  .................................................

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Precaution for Supplemental Restraint System 
(SRS) "AIR BAG" and "SEAT BELT PRE-TEN-
SIONER" .................................................................

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Handling for Adhesive and Primer  ..........................

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REMOVAL AND INSTALLATION ..............

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REAR WINDOW DEFOGGER ...........................

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Filament Check  .......................................................

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Filament Repair .......................................................

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DIAGNOSIS AND REPAIR WORKFLOW

DEF-3

< BASIC INSPECTION >

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BASIC INSPECTION

DIAGNOSIS AND REPAIR WORKFLOW

Repair Work Flow

INFOID:0000000009484745

DETAILED FLOW

1.

 LISTEN TO CUSTOMER COMPLAINT

Listen to customer complaint. Get detailed information about the conditions and environment when the symp-

tom occurs.

>> GO TO 2

2.

 VERIFY THE SYMPTOM WITH OPERATIONAL CHECK

Verify the symptom with operational check.  

>> GO TO 3

3.

 GO TO APPROPRIATE TROUBLE DIAGNOSIS

Go to appropriate trouble diagnosis. 

>> GO TO 4

4.

 REPAIR OR REPLACE

Repair or replace the specific parts.

>> GO TO 5

5.

 FINAL CHECK

Final check.
Is inspection result normal?

YES

>> Inspection End

NO

>> Check for intermittent incident. Refer to 

GI-40, "Intermittent Incident"

.

DEF-4

< SYSTEM DESCRIPTION >

REAR WINDOW DEFOGGER SYSTEM

SYSTEM DESCRIPTION

REAR WINDOW DEFOGGER SYSTEM

System Diagram

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System Description

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Operation Description

• When rear window defogger switch is turned ON while ignition switch is ON, the front air control transmits

rear window defogger switch signal to BCM.

• BCM transmits rear window defogger control signal to IPDM E/R via CAN communication when rear window

defogger operates.

• IPDM E/R turns rear window defogger relay and heated mirror relay (if equipped) ON when rear window

defogger switch signal is received.

• Rear window defogger and door mirror defogger (if equipped) are supplied with power and operate when

rear window defogger relay and heated mirror relay (if equipped) turn ON.

• Rear window defogger ON is displayed when signal is received.

Timer Function

• BCM turns rear window defogger relay and heated mirror relay (if equipped) ON for approximately 15 min-

utes when rear window defogger switch is turned ON while ignition switch is ON. It makes rear window

defogger and door mirror defogger (if equipped) operate.

• Timer is canceled after pressing rear window defogger switch again during timer operation. Then BCM turns

rear window defogger relay and heated mirror relay (if equipped) OFF. The same reaction also occurs during

timer operation, if the ignition switch is turned OFF. 

INPUT/OUTPUT SIGNAL CHART

ALLIA1045GB

Switch

Input signal to BCM

BCM function

Actuator

Rear window defogger switch

Defogger switch signal

Rear window defogger & door mirror 

defogger (if equipped) control

Rear window defogger

Door mirror defogger (if 

equipped)

Ignition switch

Ignition signal