Infiniti QX56 (JA60). Manual - part 196

 

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Infiniti QX56 (JA60). Manual - part 196

 

 

DEF-1

DRIVER CONTROLS

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SECTION 

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CONTENTS

DEFOGGER

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

3

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

3

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

3

FUNCTION DIAGNOSIS ...............................

4

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

4

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

4

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

4

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

5

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

5

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

6

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

6

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

6

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

6

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

7

COMPONENT DIAGNOSIS  ..........................

8

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

8

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

8

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

8

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

8

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

9

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

9

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

9

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

9

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

10

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

10

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

10

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

10

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

11

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

12

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

12

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

12

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

12

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

13

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

15

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

15

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

15

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

15

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

16

ECU DIAGNOSIS .........................................

18

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

18

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

18

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

21

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

21

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

27

Fail Safe ..................................................................

34

DTC Inspection Priority Chart ...............................

35

DTC Index ...............................................................

35

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

37

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

37

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

37

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

38

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

38

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

39

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

39

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

40

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

40

DIAGNOSIS AND REPAIR WORKFLOW

DEF-3

< BASIC INSPECTION >

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BASIC INSPECTION

DIAGNOSIS AND REPAIR WORKFLOW

Repair Work Flow

INFOID:0000000005146816

DETAILED FLOW

1.

 OBTAIN INFORMATION ABOUT SYMPTOM

Interview the customer to obtain the malfunction information (conditions and environment when the malfunc-

tion occurred) as much as possible when the customer brings the vehicle in.

>> GO TO 2

2.

 REPRODUCE THE MALFUNCTION INFORMATION

Check the malfunction on the vehicle that the customer describes.

Inspect the relation of the symptoms and the condition when the symptoms occur.

>> GO TO 3

3.

 IDENTIFY THE MALFUNCTIONING SYSTEM WITH “SYMPTOM DIAGNOSIS”

Use “Symptom diagnosis” from the symptom inspection result in step 2 and then identify where to start per-

forming the diagnosis based on possible causes and symptoms.

>> GO TO 4

4.

 IDENTIFY THE MALFUNCTIONING PARTS WITH “COMPONENT DIAGNOSIS”

Perform the diagnosis with “Component diagnosis” of the applicable system.

>> GO TO 5

5.

 REPAIR OR REPLACE THE MALFUNCTIONING PARTS

Repair or replace the specified malfunctioning parts.

>> GO TO 6

6.

 FINAL CHECK

Check that malfunctions are not reproduced when obtaining the malfunction information from the customer,

referring to the symptom inspection result in step 2.
Are the malfunctions corrected?

YES

>> Inspection End.

NO

>> Refer to 

GI-38, "Intermittent Incident"

.

DEF-4

< FUNCTION DIAGNOSIS >

REAR WINDOW DEFOGGER SYSTEM

FUNCTION DIAGNOSIS

REAR WINDOW DEFOGGER SYSTEM

System Diagram

INFOID:0000000005146817

System Description

INFOID:0000000005146818

Operation Description

• When rear window defogger switch is turned ON while ignition switch is ON, the A/C and AV switch assem-

bly (rear window defogger switch) transmits rear window defogger switch signal to BCM.

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

when rear window defogger operates.

• IPDM E/R turns rear window defogger relay and heated mirror relay ON when rear window defogger switch

signal is received.

• Rear window defogger and door mirror defogger are supplied with power and operate when rear window

defogger relay and heated mirror relay turn ON.

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

Timer function

• BCM turns rear window defogger relay and heated mirror relay ON for approximately 15 minutes when rear

window defogger switch is turned ON while ignition switch is ON. It makes rear window defogger and door

mirror defogger 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 OFF. The same reaction also occurs during timer opera-

tion, if the ignition switch is turned OFF. 

INPUT/OUTPUT SIGNAL CHART

ALLIA0892GB

Switch

Input signal to BCM

BCM function

Actuator

Rear window defogger switch

Defogger switch signal

Rear window defogger & door mirror 

defogger control

Rear window defogger

Door mirror defogger 

Ignition switch

Ignition signal

 

 

 

 

 

 

 

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