Ins INFINITI QX56 2004 Factory Service Manual

INTAKE DOOR MOTOR
ATC-151
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Revision: August 20072004 QX56
INTAKE DOOR MOTORPFP:27730
Removal and InstallationEJS002D9
Intake Door Motor - Front Heater and Cooling Unit Assembly
REMOVAL
1. Remove the front heater and cooling unit assembly. Refer to ATC-145, "FRONT HEATER AND COOLING
UNIT ASSEMBLY" .
2. Remove the steering member from the front heater and cooling unit assembly.
3. Disconnect the intake door motor electrical connector.
4. Remove the three screws and remove the intake door motor.
INSTALLATION
Installation is in the reverse order of removal.
LJIA0139E
1. Front heater and cooling unit assembly 2. Intake door motor 3. Air mix door motor (driver)
4. Variable blower control 5. Air mix door motor (passenger) 6. Mode door motor
7. Defroster door motor

ATC-152
MODE DOOR MOTOR
Revision: August 20072004 QX56
MODE DOOR MOTORPFP:27731
Removal and InstallationEJS002DA
Mode Door Motor - Front Heater and Cooling Unit Assembly
REMOVAL
1. Remove the front heater and cooling unit assembly. Refer to ATC-145, "FRONT HEATER AND COOLING
UNIT ASSEMBLY" .
2. Remove the steering member from the front heater and cooling unit assembly.
3. Disconnect the mode door motor electrical connector.
4. Remove the two screws and remove the mode door motor.
INSTALLATION
Installation is in the reverse order of removal.
LJIA0139E
1. Front heater and cooling unit assembly 2. Intake door motor 3. Air mix door motor (driver)
4. Variable blower control 5. Air mix door motor (passenger) 6. Mode door motor
7. Defroster door motor

AIR MIX DOOR MOTOR
ATC-153
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Revision: August 20072004 QX56
AIR MIX DOOR MOTOR PFP:27732
ComponentsEJS002DB
Air Mix Door Motors - Front Heater and Cooling Unit Assembly
Removal and InstallationEJS002DC
FRONT AIR MIX DOOR MOTOR (DRIVER)
Removal
1. Remove the front heater and cooling unit assembly. Refer to ATC-145, "FRONT HEATER AND COOLING
UNIT ASSEMBLY" .
2. Remove the steering member from the front heater and cooling unit assembly.
3. Disconnect the air mix door motor electrical connector.
4. Remove the three screws and remove the air mix door motor.
Installation
Installation is in the reverse order of removal.
LJIA0139E
1. Front heater and cooling unit assembly 2. Intake door motor 3. Air mix door motor (driver)
4. Variable blower control 5. Air mix door motor (passenger) 6. Mode door motor
7. Defroster door motor

ATC-154
AIR MIX DOOR MOTOR
Revision: August 20072004 QX56
FRONT AIR MIX DOOR MOTOR (PASSENGER)
Removal
1. Remove the front heater and cooling unit assembly. Refer to ATC-145, "FRONT HEATER AND COOLING
UNIT ASSEMBLY" .
2. Remove the steering member from the front heater and cooling unit assembly.
3. Disconnect the air mix door motor electrical connector.
4. Remove the three screws and remove the air mix door motor.
Installation
Installation is in the reverse order of removal.
REAR AIR MIX DOOR MOTOR
Removal
1. Remove the RH rear interior trim panel. Refer to EI-34, "Removal and Installation" .
2. Disconnect the rear air mix door motor electrical connector.
3. Remove the three screws and remove the rear air mix door
motor.
Installation
Installation is in the reverse order of removal.
LJIA0021E

VARIABLE BLOWER CONTROL
ATC-155
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Revision: August 20072004 QX56
VARIABLE BLOWER CONTROLPFP:27200
Removal and InstallationEJS002DD
Variable Blower Control - Front Heater and Cooling Unit Assembly
REMOVAL
1. Remove the front heater and cooling unit assembly. Refer to ATC-145, "FRONT HEATER AND COOLING
UNIT ASSEMBLY" .
2. Remove the steering member from the front heater and cooling unit assembly.
3. Disconnect the variable blower control electrical connector.
4. Remove the two screws and remove the variable blower control.
INSTALLATION
Installation is in the reverse order of removal.
LJIA0139E
1. Front heater and cooling unit assembly 2. Intake door motor 3. Air mix door motor (driver)
4. Variable blower control 5. Air mix door motor (passenger) 6. Mode door motor
7. Defroster door motor

ATC-156
REAR BLOWER MOTOR RESISTOR
Revision: August 20072004 QX56
REAR BLOWER MOTOR RESISTORPFP:27150
Removal and InstallationEJS002DE
Rear Blower Motor Resistor
REMOVAL
1. Remove the rear RH interior trim panel. Refer to EI-34, "Removal and Installation" .
2. Disconnect the rear blower motor resistor electrical connector.
3. Remove the two screws and remove the rear blower motor resistor.
INSTALLATION
Installation is in the reverse order of removal.
LJIA0055E
1. Rear blower motor 2. Rear blower motor case 3. Rear blower motor resistor

DUCTS AND GRILLES
ATC-159
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Revision: August 20072004 QX56
Grilles
LJIA0140E
1. Overhead console trim panel 2. Overhead console front grilles (front) 3. Overhead console rear grilles (rear)
4. Instrument panel 5. Storage tray bottom cover (LH) 6. LH side ventilator and demister grille

ATC-160
DUCTS AND GRILLES
Revision: August 20072004 QX56
Removal and InstallationEJS002DG
CENTER CONSOLE HEAT DUCT AND REAR FINISHER ASSEMBLY GRILLE
Removal
The center console must be removed and disassembled to remove the heat duct and rear finisher assembly
grille. Refer to IP-15, "
Center Console" .
Installation
Installation is in the reverse order of removal.
DEFROSTER NOZZLE
Removal
1. Remove the instrument panel trim. Refer to IP-10, "INSTRUMENT PANEL ASSEMBLY" .
2. Remove the defroster nozzle.
Installation
Installation is in the reverse order of removal.
RH AND LH SIDE DEMISTER DUCT
Removal
1. Remove the instrument panel trim. Refer to IP-10, "INSTRUMENT PANEL ASSEMBLY" .
2. Remove the RH or LH side demister duct.
Installation
Installation is in the reverse order of removal.
RH AND LH VENTILATOR DUCT
Removal
1. Remove the instrument panel trim. Refer to IP-10, "INSTRUMENT PANEL ASSEMBLY" .
2. Remove the RH or LH ventilator duct.
Installation
Installation is in the reverse order of removal.
CENTER VENTILATOR DUCT
Removal
1. Remove the instrument panel trim. Refer to IP-10, "INSTRUMENT PANEL ASSEMBLY" .
2. Remove the defroster nozzle.
3. Remove the RH and LH side demister ducts.
4. Remove the RH and LH ventilator ducts.
5. Remove the center ventilator duct.
Installation
Installation is in the reverse order of removal.
FLOOR DUCT
Removal
1. Remove the floor carpet. Refer to EI-36, "Removal and Installation" .
2. Remove the two clips and remove the floor duct.
Installation
Installation is in the reverse order of removal.
REAR OVERHEAD DUCTS
Removal
1. Remove the rear RH interior trim panel. Refer to EI-34, "Removal and Installation" .
2. Remove the headliner. Refer to EI-37, "
Removal and Installation" .
7. LH ventilator grille 8. RH ventilator grille 9. RH side ventilator and demister grille
10. Storage tray bottom cover (RH)

DUCTS AND GRILLES
ATC-161
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Revision: August 20072004 QX56
NOTE:
The rear headliner duct connected to the rear upper overhead duct is part of the headlining trim panel and
is replaced as an assembly. Refer to EI-37, "
Removal and Installation" .
3. Remove the two bolts and remove the rear lower and upper overhead ducts.
Installation
Installation is in the reverse order of removal.
REAR FLOOR DUCT
Removal
1. Remove the rear RH interior trim panel. Refer to EI-34, "Removal and Installation" .
2. Reposition the floor carpet out of the way.
3. Remove the two bolts and remove the rear floor duct.
Installation
Installation is in the reverse order of removal.
GRILLES
Removal
1. Remove the interior trim panel as necessary. Refer to IP-10, "INSTRUMENT PANEL ASSEMBLY" or EI-
37, "Removal and Installation" .
2. Remove the grille from the interior trim panel.
NOTE:
To remove the overhead console front and rear grilles, turn the grille counter-clockwise to release the
grille from the overhead console trim panel.
Installation
Installation is in the reverse order of removal.

ATC-166
REFRIGERANT LINES
Revision: August 20072004 QX56
Removal and Installation for CompressorEJS002DJ
A/C Compressor Mounting
REMOVAL
1. Discharge the refrigerant. Refer to ATC-162, "HFC-134a (R-134a) Service Procedure" .
2. Remove the front right wheel and tire assembly. Refer to WT-6, "
Rotation" .
3. Remove the engine under cover and the splash shield using power tool.
4. Remove the engine air cleaner and air ducts. Refer to EM-14, "
REMOVAL" .
5. Remove the drive belt. Refer to EM-12, "
Removal" .
6. Disconnect the compressor electrical connector.
7. Disconnect the high-pressure flexible hose and low-pressure flexible hose from the compressor.
CAUTION:
Cap or wrap the joint of the hose with suitable material such as vinyl tape to avoid the entry of
contaminants.
8. Remove the compressor bolts and nut using power tools.
WJIA0958E