Index Infiniti Infiniti QX56 (Z62) - service repair manual 2011 year

Content .. 776 777 778 779 ..

Infiniti QX56 (Z62). Manual - part 778

HAC-3

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B2630, B2631 SUNLOAD SENSOR (DRIVER
SIDE) ..................................................................

DTC Logic ...............................................................

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

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

B2632, B2633 FRONT AIR MIX DOOR MO-
TOR (DRIVER SIDE) ..........................................

DTC Logic ...............................................................

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

B2634, B2635 FRONT AIR MIX DOOR MO-
TOR (PASSENGER SIDE) .................................

DTC Logic ...............................................................

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

B2636, B2637, B2638, B2639, B2654, B2655
FRONT MODE DOOR MOTOR ..........................

DTC Logic ...............................................................

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

B263D, B263E, B263F INTAKE DOOR MO-
TOR ....................................................................

DTC Logic ...............................................................

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

B2661, B2662, B2663 UPPER VENTILATOR
DOOR MOTOR ...................................................

DTC Logic ...............................................................

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

B2664, B2665 REAR AIR MIX DOOR MOTOR

....

DTC Logic ...............................................................

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

B2666, B2669, B266A REAR MODE DOOR
MOTOR .............................................................

DTC Logic .............................................................

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

B2667, B2668 SUNLOAD SENSOR (PAS-
SENGER SIDE) ................................................

DTC Logic .............................................................

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

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

B266B, B266C REAR IN-VEHICLE SENSOR ..

DTC Logic .............................................................

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

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

B27B0 A/C AUTO AMP. ..................................

DTC Logic .............................................................

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

POWER SUPPLY AND GROUND CIRCUIT ....

A/C AUTO AMP. ......................................................

A/C AUTO AMP. : Diagnosis Procedure ...............

FRONT AIR MIX DOOR MOTOR (DRIVER SIDE) ..

FRONT AIR MIX DOOR MOTOR (DRIVER SIDE)
: Diagnosis Procedure ...........................................

FRONT AIR MIX DOOR MOTOR (PASSENGER
SIDE) ........................................................................

FRONT AIR MIX DOOR MOTOR (PASSENGER
SIDE) : Diagnosis Procedure .................................

FRONT MODE DOOR MOTOR ...............................

FRONT MODE DOOR MOTOR : Diagnosis Pro-
cedure ....................................................................

INTAKE DOOR MOTOR ..........................................

INTAKE DOOR MOTOR : Diagnosis Procedure ...

REAR AIR MIX DOOR MOTOR ...............................

REAR AIR MIX DOOR MOTOR : Diagnosis Pro-
cedure ....................................................................

REAR A/C CONTROL .............................................

REAR A/C CONTROL : Diagnosis Procedure .......

REAR MODE DOOR MOTOR .................................

REAR MODE DOOR MOTOR : Diagnosis Proce-
dure .......................................................................

UPPER VENTILATOR DOOR MOTOR ...................

UPPER VENTILATOR DOOR MOTOR : Diagno-
sis Procedure .........................................................

DOOR MOTOR ................................................

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

DOOR MOTOR COMMUNICATION CIRCUIT .

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

FRONT BLOWER MOTOR .............................

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

Component Inspection (Front Blower Motor) .........

Component Inspection (Blower Relay) ..................

IONIZER ..........................................................

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

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

MAGNET CLUTCH .........................................

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

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

REAR A/C CONTROL COMMUNICATION
SIGNAL ...........................................................

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

REAR A/C SOLENOID VALVE .......................

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

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

REAR BLOWER MOTOR ...............................

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

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

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

HAC-4

FRONT AUTOMATIC AIR CONDITIONING
SYSTEM ...........................................................

Diagnosis Chart By Symptom ................................

REAR AUTOMATIC AIR CONDITIONING
SYSTEM ...........................................................

Diagnosis Chart By Symptom ................................

ACCS (ADVANCE CLIMATE CONTROL
SYSTEM) .........................................................

Symptom Table .....................................................

INSUFFICIENT COOLING ...............................

FRONT AIR CONDITIONER ....................................

FRONT AIR CONDITIONER : Description ............

FRONT AIR CONDITIONER : Diagnosis Proce-
dure .......................................................................

REAR AIR CONDITIONER ......................................

REAR AIR CONDITIONER : Description ...............

REAR AIR CONDITIONER : Diagnosis Procedure

..

INSUFFICIENT HEATING ...............................

FRONT AIR CONDITIONER ....................................

FRONT AIR CONDITIONER : Description ............

FRONT AIR CONDITIONER : Diagnosis Proce-
dure .......................................................................

REAR AIR CONDITIONER ......................................

REAR AIR CONDITIONER : Description ...............

REAR AIR CONDITIONER : Diagnosis Procedure

..

COMPRESSOR DOSE DOT OPERATE .........

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

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

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

FRONT A/C CONTROL ...................................

Removal and Installation .......................................

REAR A/C CONTROL .....................................

Removal and Installation .......................................

A/C AUTO AMP. ..............................................

Removal and Installation .......................................

AMBIENT SENSOR ..........................................

Removal and Installation .......................................

IN-VEHICLE SENSOR ......................................

FRONT A/C UNIT ASSEMBLY ...............................

FRONT A/C UNIT ASSEMBLY : Removal and In-
stallation ................................................................

REAR A/C UNIT ASSEMBLY .................................

REAR A/C UNIT ASSEMBLY : Removal and In-
stallation ................................................................

SUNLOAD SENSOR ........................................

Removal and Installation .......................................

INTAKE SENSOR .............................................

Exploded View ......................................................

Removal and Installation .......................................

EXHAUST GAS/OUTSIDE ODOR SENSOR ...

Removal and Installation .......................................

DOOR MOTOR .................................................

Exploded View ......................................................

MODE DOOR MOTOR ............................................

MODE DOOR MOTOR : Removal and Installation .

AIR MIX DOOR MOTOR .........................................

AIR MIX DOOR MOTOR : Removal and Installa-
tion ........................................................................

INTAKE DOOR MOTOR .........................................

INTAKE DOOR MOTOR : Removal and Installa-
tion ........................................................................

UPPER VENTILATOR DOOR MOTOR ..................

UPPER VENTILATOR DOOR MOTOR : Removal
and Installation ......................................................

REAR MODE DOOR MOTOR .................................

REAR MODE DOOR MOTOR : Removal and In-
stallation ................................................................

REAR AIR MIX DOOR MOTOR ..............................

REAR AIR MIX DOOR MOTOR : Removal and In-
stallation ................................................................

IONIZER ............................................................

Exploded View ......................................................

Removal and Installation .......................................

PRECAUTIONS

HAC-5

< PRECAUTION >

[AUTOMATIC AIR CONDITIONING]

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PRECAUTION

PRECAUTIONS

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

INFOID:0000000006275847

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 severity 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 whether the front occupants are belted or unbelted.
Information necessary to service the system safely is included in the “SRS AIR BAG” and “SEAT BELT” of this
Service Manual.

WARNING:

• To avoid rendering the SRS inoperative, which could increase the risk of personal injury or death in

the event of a collision that would result in air bag inflation, all maintenance must be performed by
an authorized NISSAN/INFINITI dealer.

• Improper maintenance, including incorrect removal and installation of the SRS, can lead to personal

injury caused by unintentional activation of the system. For removal of Spiral Cable and Air Bag
Module, see the “SRS AIR BAG”.

• Do not use electrical test equipment on any circuit related to the SRS unless instructed to in this

Service Manual. SRS wiring harnesses can be identified 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 Air Bag Diagnosis Sensor Unit or other Air Bag System sensors with the

ignition ON or engine running, DO NOT use air or electric 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.

HAC-6

< SYSTEM DESCRIPTION >

[AUTOMATIC AIR CONDITIONING]

COMPONENT PARTS

SYSTEM DESCRIPTION

COMPONENT PARTS

FRONT AUTOMATIC AIR CONDITIONING SYSTEM

FRONT AUTOMATIC AIR CONDITIONING SYSTEM : Component Parts Location

INFOID:0000000006275848

1.

Preset switch

2.

Engine coolant temperature sensor
Refer to

EC-16, "Component Parts

.

3.

IPDM E/R
Refer to

PCS-4, "Component Parts

.

4.

ECM
Refer to

EC-16, "Component Parts

5.

Refrigerant pressure sensor

6.

Ambient sensor

7.

Magnet clutch

8.

AV control unit
Refer to

AV-9, "Component Parts Lo-

.

9.

Combination meter
Refer to

MWI-6, "METER SYSTEM :

Component Parts Location"

.

10. Sunload sensor

11. Front display

12. Upper ventilator door motor

JMIIA0812ZZ

Content .. 776 777 778 779 ..