Infiniti QX56 (JA60). Manual — part 196
DEF-1
DRIVER CONTROLS
C
D
E
F
G
H
I
J
K
M
SECTION
DEF
A
B
DEF
N
O
P
CONTENTS
DEFOGGER
BASIC INSPECTION . . . . . . . . .
DIAGNOSIS AND REPAIR WORKFLOW . . ..
Repair Work Flow . . . . . . . . . . . . . ..
FUNCTION DIAGNOSIS . . . . . . . ...
REAR WINDOW DEFOGGER SYSTEM . . . .
System Diagram . . . . . . . . . . . . . ....
System Description . . . . . . . . . . . . ...
Component Parts Location . . . . . . . . . ....
Component Description . . . . . . . . . . .....
DIAGNOSIS SYSTEM (BCM) . . . . . . . .
COMMON ITEM . . . . . . . . . . . . . . ...
COMMON ITEM : CONSULT-III Function (BCM -
COMMON ITEM) . . . . . . . . . . . . . ...
REAR WINDOW DEFOGGER . . . . . . . . .....
REAR WINDOW DEFOGGER : CONSULT-III
Function (BCM - REAR DEFOGGER) . . . . . ..
COMPONENT DIAGNOSIS . . . . . . ..
REAR WINDOW DEFOGGER SWITCH . . . .
Description . . . . . . . . . . . . . . . ....
Component Function Check . . . . . . . . . ..
Diagnosis Procedure . . . . . . . . . . . .....
REAR WINDOW DEFOGGER RELAY . . . ...
Description . . . . . . . . . . . . . . . ....
Component Function Check . . . . . . . . . ..
Diagnosis Procedure . . . . . . . . . . . .....
REAR WINDOW DEFOGGER POWER SUP-
PLY AND GROUND CIRCUIT . . . . . . .
Description . . . . . . . . . . . . . . . ..
Component Function Check . . . . . . . . .
Diagnosis Procedure . . . . . . . . . . . ...
Component Inspection . . . . . . . . . . .
DOOR MIRROR DEFOGGER LH . . . . . ..
Description . . . . . . . . . . . . . . . ...
Component Function Check . . . . . . . . .
Diagnosis Procedure . . . . . . . . . . . ...
Component Inspection . . . . . . . . . . . .
DOOR MIRROR DEFOGGER RH . . . . . .
Description . . . . . . . . . . . . . . . ...
Component Function Check . . . . . . . . .
Diagnosis Procedure . . . . . . . . . . . ...
Component Inspection . . . . . . . . . . . .
ECU DIAGNOSIS . . . . . . . . . . .
BCM (BODY CONTROL MODULE) . . . . .
Reference Value . . . . . . . . . . . . . ..
Terminal Layout . . . . . . . . . . . . . ...
Physical Values . . . . . . . . . . . . . ...
Wiring Diagram . . . . . . . . . . . . . .
Fail Safe . . . . . . . . . . . . . . . . ..
DTC Inspection Priority Chart . . . . . . . ...
DTC Index . . . . . . . . . . . . . . . ...
SYMPTOM DIAGNOSIS . . . . . . . ..
REAR WINDOW DEFOGGER AND DOOR
MIRROR DEFOGGER DO NOT OPERATE. .
Diagnosis Procedure . . . . . . . . . . . ...
REAR WINDOW DEFOGGER DOES NOT
OPERATE BUT BOTH OF DOOR MIRROR
DEFOGGER OPERATE. . . . . . . . . ...
Diagnosis Procedure . . . . . . . . . . . ...
Diagnosis Procedure . . . . . . . . . . . ...
DRIVER SIDE DOOR MIRROR DEFOGGER
DOES NOT OPERATE. . . . . . . . . . .
DEF-2
PASSENGER SIDE DOOR MIRROR DEFOG-
GER DOES NOT OPERATE. . . . . . . .
Diagnosis Procedure . . . . . . . . . . . ..
Diagnosis Procedure . . . . . . . . . . . ..
PRECAUTION . . . . . . . . . . . .
PRECAUTIONS . . . . . . . . . . . . .
Precaution Necessary for Steering Wheel Rota-
tion After Battery Disconnect . . . . . . . . ..
Handling for Adhesive and Primer . . . . . . ..
ON-VEHICLE REPAIR . . . . . . . ...
REAR WINDOW DEFOGGER . . . . . . ...
Filament Check . . . . . . . . . . . . . ...
DIAGNOSIS AND REPAIR WORKFLOW
DEF-3
< BASIC INSPECTION >
C
D
E
F
G
H
I
J
K
M
A
B
DEF
N
O
P
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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