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Page 769 of 4083

INFINITI QX56 2008 Factory Service Manual DEF-10
< COMPONENT DIAGNOSIS >
REAR WINDOW DEFOGGER POWER SUPPLY AND GROUND CIRCUIT
REAR WINDOW DEFOGGER POWER SUPPLY AND GROUND CIRCUIT
DescriptionINFOID:0000000001735615
Heats the heating wire with

Page 770 of 4083

INFINITI QX56 2008 Factory Service Manual REAR WINDOW DEFOGGER POWER SUPPLY AND GROUND CIRCUIT
DEF-11
< COMPONENT DIAGNOSIS >
C
D E
F
G H
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M A
B
DEF
N
O P
1. Disconnect IPDM E/R.
2. Check continuity between rear window defogger connector

Page 771 of 4083

INFINITI QX56 2008 Factory Service Manual DEF-12
< COMPONENT DIAGNOSIS >
DOOR MIRROR DEFOGGER LH
DOOR MIRROR DEFOGGER LH
DescriptionINFOID:0000000001735623
Heats the heating wire with the power supply from the rear window defogger relay to pr

Page 772 of 4083

INFINITI QX56 2008 Factory Service Manual DOOR MIRROR DEFOGGER LHDEF-13
< COMPONENT DIAGNOSIS >
C
DE
F
G H
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M A
B
DEF
N
O P
NO >> Repair or replace harness.
4. CHECK DOOR MIRROR DEFOGGER CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect

Page 773 of 4083

INFINITI QX56 2008 Factory Service Manual DEF-14
< COMPONENT DIAGNOSIS >
DOOR MIRROR DEFOGGER RH
DOOR MIRROR DEFOGGER RH
DescriptionINFOID:0000000001735631
Heats the heating wire with the power supply from the rear window defogger relay to pr

Page 774 of 4083

INFINITI QX56 2008 Factory Service Manual DOOR MIRROR DEFOGGER RHDEF-15
< COMPONENT DIAGNOSIS >
C
DE
F
G H
I
J
K
M A
B
DEF
N
O P
NO >> Repair or replace harness.
4. CHECK DOOR MIRROR DEFOGGER CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect

Page 786 of 4083

INFINITI QX56 2008 Factory Service Manual BOTH DOORS MIRROR DEFOGGER DON’T OPERATE BUT REAR WINDOW DEFOGGER OPERATES
DEF-27
< SYMPTOM DIAGNOSIS >
C
DE
F
G H
I
J
K
M A
B
DEF
N
O P
BOTH DOORS MIRROR DEFOGGER DON’T OPERATE BUT REAR WIN-
DOW

Page 790 of 4083

INFINITI QX56 2008 Factory Service Manual PRECAUTIONSDEF-31
< PRECAUTION >
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PRECAUTION
PRECAUTIONS
Precaution for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT BELT
PRE-TENSIONER"
INFOID:00000000048

PRECAUTIONSDEF-31
< PRECAUTION >
C
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PRECAUTION
PRECAUTIONS
Precaution for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT BELT
PRE-TENSIONER"
INFOID:0000000004894308
The Supplemental Restraint System such as “AIR BAG” and “SEAT BELT PRE-TENSIONER”, used along
with a front seat belt, helps to reduce the risk or severi ty of injury to the driver and front passenger for certain
types of collision. This system includes seat belt switch inputs and dual stage front air bag modules. The SRS
system uses the seat belt switches to determine the front air bag deployment, and may only deploy one front
air bag, depending on the severity of a collision and w hether the front occupants are belted or unbelted.
Information necessary to service the system safely is included in the SR and SB section of this Service Man-
ual.
WARNING:
• To avoid rendering the SRS inoper ative, which could increase the risk of personal injury or death in
the event of a collision which would result in air bag inflation, all maintenance must be performed by
an authorized NISSAN/INFINITI dealer.
• Improper maintenance, including in correct removal and installation of the SRS, can lead to personal
injury caused by unintentional act ivation of the system. For removal of Spiral Cable and Air Bag
Module, see the SR section.
• Do not use electrical test equipm ent on any circuit related to the SRS unless instructed to in this
Service Manual. SRS wiring harnesses can be identi fied by yellow and/or orange harnesses or har-
ness connectors.
PRECAUTIONS WHEN USING POWER TOOLS (AIR OR ELECTRIC) AND HAMMERS
WARNING:
• When working near the Airbag Diagnosis Sensor Un it or other Airbag System sensors with the Igni-
tion ON or engine running, DO NOT use air or el ectric power tools or strike near the sensor(s) with a
hammer. Heavy vibration could activate the sensor( s) and deploy the air bag(s), possibly causing
serious injury.
• When using air or electric power tools or hammers, always switch the Ignition OFF, disconnect the battery, and wait at least 3 minutes before performing any service.
Precaution Necessary for Steering Wheel Rotation After Battery Disconnect
INFOID:0000000004894309
NOTE:
• This Procedure is applied only to models with Intelligent Key system and NATS (NISSAN ANTI-THEFT SYS-
TEM).
• Remove and install all control units after disconnecti ng both battery cables with the ignition knob in the
″ LOCK ″ position.
• Always use CONSULT-III to perform self-diagnosis as a part of each function inspection after finishing work.
If DTC is detected, perform trouble diagnosis according to self-diagnostic results.
For models equipped with the Intelligent Key system and NATS , an electrically controlled steering lock mech-
anism is adopted on the key cylinder.
For this reason, if the battery is disconnected or if the battery is discharged, the steering wheel will lock and
steering wheel rotation will become impossible.
If steering wheel rotation is required when battery power is interrupted, follow the procedure below before
starting the repair operation.
OPERATION PROCEDURE
1. Connect both battery cables. NOTE:
Supply power using jumper cables if battery is discharged.
2. Use the Intelligent Key or mechanical key to turn the ignition switch to the ″ACC ″ position. At this time, the
steering lock will be released.
3. Disconnect both battery cables. The steering lock will remain released and the steering wheel can be
rotated.
4. Perform the necessary repair operation.
Revision: March 2010 2008 QX56

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