Air INFINITI QX56 2010 Factory Service Manual

REAR WINDOW DEFOGGER POWER SUPPLY AND GROUND CIRCUIT
DEF-11
< COMPONENT DIAGNOSIS >
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1. Disconnect IPDM E/R.
2. Check continuity between rear window defogger connector (A) and IPDM E/R connector (B).
3. Check continuity between rear window defogger connector (A) and ground.
Is the inspection result normal?
YES >> GO TO 5
NO >> Replace or repair harness.
4. CHECK FILAMENT
Check filament.
Refer to DEF-45, "
Filament Check".
Is the inspection result normal?
YES >> Refer to GI-38, "Intermittent Incident".
NO >> Repair filament. Refer to DEF-45, "
Filament Repair".
5. CHECK INTERMITTENT INCIDENT
Check intermittent incident.
Refer to GI-38, "
Intermittent Incident".
Is the inspection result normal?
YES >> Check the following. • Battery power supply circuit.
• IPDM E/R.
NO >> Repair or replace the malfunctioning parts.
Component InspectionINFOID:0000000005146833
1. CHECK FILAMENT
Check the filament for damage or open circuits.
Refer to DEF-45, "
Filament Check".
Is the inspection result normal?
YES >> Inspection End.
NO >> Repair filament. Refer to DEF-45, "
Filament Repair".
Rear window defog-
ger connector Te r m i n a l
IPDM E/R
connector Terminal Continuity
D406 (A) 1 E124 (B) 60 Yes
Rear window defog- ger connector Te r m i n a l
GroundContinuity
D406 (A) 1 No
LIIA2644E
Revision: April 20092010 QX56

DOOR MIRROR DEFOGGER LHDEF-13
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Is the inspection result normal?
YES >> GO TO 4
NO >> Repair or replace harness.
4. CHECK DOOR MIRROR DEFOGGER CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect IPDM E/R and door mirror LH.
3. Check continuity between IPDM E/R connector E120 terminal 23 and door mirror LH connector D4 terminal 10.
Is the inspection result normal?
YES >> GO TO 5
NO >> Repair or replace harness.
5. CHECK DOOR MIRROR DEFOGGER GROUND CIRCUIT
Check continuity between door mirror LH connector D4 terminal 11
and ground.
Is the inspection result normal?
YES >> GO TO 6
NO >> Repair or replace harness.
6. CHECK DOOR MIRROR DEFOGGER LH
Check door mirror defogger LH.
Refer to DEF-13, "
Component Inspection".
Is the inspection result normal?
YES >> GO TO 7
NO >> Replace door mirror. Refer to MIR-17, "
Door Mirror Assembly".
7. CHECK INTERMITTENT INCIDENT
Check intermittent incident.
Refer to GI-38, "
Intermittent Incident".
Is the inspection result normal?
YES >> Check the following. • Battery power supply circuit.
• IPDM E/R.
NO >> Repair or replace the malfunctioning parts.
Component InspectionINFOID:0000000005146837
1. CHECK DOOR MIRROR DEFOGGER
D4 10 Ground Rear window defogger
switch ON
Battery voltage
Rear window defogger
switch OFF 0
23 - 10
: Continuity should exist.
WIIA0529E
11 - Ground: Continuity should exist.
LIIA1454E
Revision: April 20092010 QX56

DEF-16
< COMPONENT DIAGNOSIS >
DOOR MIRROR DEFOGGER RH
Is the inspection result normal?
YES >> GO TO 4
NO >> Repair or replace harness.
4. CHECK DOOR MIRROR DEFOGGER CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect IPDM E/R and door mirror RH.
3. Check continuity between IP DM E/R connector E120 terminal
23 and door mirror RH connector D107 terminal 10.
Is the inspection result normal?
YES >> GO TO 5
NO >> Repair or replace harness.
5. CHECK DOOR MIRROR DEFOGGER GROUND CIRCUIT
Check continuity between door mirror RH connector D107 terminal
11 and ground.
Is the inspection result normal?
YES >> GO TO 6
NO >> Repair or replace harness.
6. CHECK DOOR MIRROR DEFOGGER RH
Check door mirror defogger RH.
Refer to DEF-16, "
Component Inspection".
Is the inspection result normal?
YES >> GO TO 7
NO >> Replace door mirror. Refer to MIR-17, "
Door Mirror Assembly".
7. CHECK INTERMITTENT INCIDENT
Check intermittent incident.
Refer to GI-38, "
Intermittent Incident".
Is the inspection result normal?
YES >> Check the following. • Battery power supply circuit.
• IPDM E/R.
NO >> Repair or replace the malfunctioning parts.
Component InspectionINFOID:0000000005146841
1. CHECK DOOR MIRROR DEFOGGER
D107 10 Ground Rear window defogger
switch ON
Battery voltage
Rear window defogger
switch OFF 0
23 - 10
: Continuity should exist.
WIIA0529E
11 - Ground: Continuity should exist.
LIIA1454E
Revision: April 20092010 QX56

DEF-18
< ECU DIAGNOSIS >
BCM (BODY CONTROL MODULE)
ECU DIAGNOSIS
BCM (BODY CONTROL MODULE)
Reference ValueINFOID:0000000005327536
VALUES ON THE DIAGNOSIS TOOL
Monitor ItemCondition Value/Status
AIR COND SW A/C switch OFF
OFF
A/C switch ON ON
AUT LIGHT SYS Outside of the room is dark
OFF
Outside of the room is bright ON
AUTO LIGHT SW Lighting switch OFF
OFF
Lighting switch AUTO ON
BACK DOOR SW Back door closed
OFF
Back door opened ON
CARGO LAMP SW Cargo lamp switch OFF
OFF
Cargo lamp switch ON ON
CDL LOCK SW Door lock/unlock switch does not operate
OFF
Press door lock/unlock switch to the LOCK side ON
CDL UNLOCK SW Door lock/unlock switch does not operate
OFF
Press door lock/unlock switch to the UNLOCK side ON
DOOR SW-AS Front door RH closed
OFF
Front door RH opened ON
DOOR SW-DR Front door LH closed
OFF
Front door LH opened ON
DOOR SW-RL Rear door LH closed
OFF
Rear door LH opened ON
DOOR SW-RR Rear door RH closed
OFF
Rear door RH opened ON
ENGINE RUN Engine stopped
OFF
Engine running ON
FR FOG SW Front fog lamp switch OFF
OFF
Front fog lamp switch ON ON
FR WASHER SW Front washer switch OFF
OFF
Front washer switch ON ON
FR WIPER LOW Front wiper switch OFF
OFF
Front wiper switch LO ON
FR WIPER HI Front wiper switch OFF
OFF
Front wiper switch HI ON
FR WIPER INT Front wiper switch OFF
OFF
Front wiper switch INT ON
FR WIPER STOP Any position other than front wiper stop position
OFF
Front wiper stop position ON
HAZARD SW When hazard switch is not pressed
OFF
When hazard switch is pressed ON
Revision: April 20092010 QX56

REAR WINDOW DEFOGGER AND DOOR MIRROR DEFOGGER DO NOT OPER-
ATE.
DEF-37
< SYMPTOM DIAGNOSIS >
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SYMPTOM DIAGNOSIS
REAR WINDOW DEFOGGER AND DO OR MIRROR DEFOGGER DO NOT
OPERATE.
Diagnosis ProcedureINFOID:0000000005146849
1. CHECK REAR WINDOW DEFOGGER SWITCH
Check rear window defogger switch.
Refer to DEF-10, "
Component Function Check".
Is the inspection result normal?
YES >> GO TO 2
NO >> Repair or replace the malfunctioning parts.
2. CHECK REAR WINDOW DEFOGGER RELAY
Check rear window defogger relay.
Refer to DEF-9, "
Component Function Check".
Is the inspection result normal?
YES >> Refer to GI-38, "Intermittent Incident".
NO >> Repair or replace the malfunctioning parts.
Revision: April 20092010 QX56

DEF-38
< SYMPTOM DIAGNOSIS >
REAR WINDOW DEFOGGER DOES NOT OPERATE BUT BOTH OF DOOR MIR-ROR DEFOGGER OPERATE.
REAR WINDOW DEFOGGER DOES NO T OPERATE BUT BOTH OF DOOR
MIRROR DEFOGGER OPERATE.
Diagnosis ProcedureINFOID:0000000005146850
1. CHECK REAR WINDOW DEFOGGER POWER SUPPLY AND GROUND CIRCUIT
Check rear window defogger power supply and ground circuit.
Refer to DEF-10, "
Component Function Check".
Is the inspection result normal?
YES >> Refer to GI-38, "Intermittent Incident".
NO >> Repair or replace the malfunctioning parts.
Revision: April 20092010 QX56

BOTH DOORS MIRROR DEFOGGER DON’T OPERATE BUT REAR WINDOW DEFOGGER OPERATES
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BOTH DOORS MIRROR DEFOGGER DON’T OPERATE BUT REAR WIN-
DOW DEFOGGER OPERATES
Diagnosis ProcedureINFOID:0000000005146851
1. CHECK INTERMITTENT INCIDENT
Check intermittent incident.
Refer to GI-38, "
Intermittent Incident".
Is the inspection result normal?
YES >> Check the following. • Battery power supply circuit.
• IPDM E/R.
NO >> Repair or replace the malfunctioning parts.
Revision: April 20092010 QX56

DEF-40
< SYMPTOM DIAGNOSIS >
DRIVER SIDE DOOR MIRROR DEFOGGER DOES NOT OPERATE.
DRIVER SIDE DOOR MIRROR DEFOGGER DOES NOT OPERATE.
Diagnosis ProcedureINFOID:0000000005146852
1. CHECK DOOR MIRROR DEFOGGER LH
Check door mirror defogger LH.
Refer to DEF-12, "
Component Function Check".
Is the inspection result normal?
YES >> Refer to GI-38, "Intermittent Incident".
NO >> Repair or replace the malfunctioning parts.
Revision: April 20092010 QX56

PASSENGER SIDE DOOR MIRROR DEFOGGER DOES NOT OPERATE.
DEF-41
< SYMPTOM DIAGNOSIS >
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PASSENGER SIDE DOOR MIRROR DEFOGGER DOES NOT OPERATE.
Diagnosis ProcedureINFOID:0000000005146853
1. CHECK DOOR MIRROR DEFOGGER RH
Check door mirror defogger RH.
Refer to DEF-15, "
Component Function Check".
Is the inspection result normal?
YES >> Refer to GI-38, "Intermittent Incident".
NO >> Repair or replace the malfunctioning parts.
Revision: April 20092010 QX56

PRECAUTIONSDEF-43
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PRECAUTION
PRECAUTIONS
Precaution for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT BELT
PRE-TENSIONER"
INFOID:0000000005367609
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:0000000005367612
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: April 20092010 QX56