INFINITI QX4 2005 Factory Service Manual

ATC-166
AIR MIX DOOR MOTOR
Revision: October 20052005 QX56
AIR MIX DOOR MOTOR PFP:27732
ComponentsEJS003YL
Air Mix Door Motors - Front Heater and Cooling Unit Assembly
Removal and InstallationEJS003YM
FRONT AIR MIX DOOR MOTOR (DRIVER)
Removal
1. Remove the center console lower cover LH. Refer to IP-10, "INSTRUMENT PANEL ASSEMBLY" .
2. Disconnect the air mix door motor electrical connector.
3. 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 (passenger)
4. Variable blower control 5. Air mix door motor (driver) 6. Mode door motor
7. Defroster door motor

AIR MIX DOOR MOTOR
ATC-167
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Revision: October 20052005 QX56
FRONT AIR MIX DOOR MOTOR (PASSENGER)
Removal
1. Remove the front heater and cooling unit assembly. Refer to ATC-157, "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-35, "BODY SIDE TRIM" .
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

ATC-168
VARIABLE BLOWER CONTROL
Revision: October 20052005 QX56
VARIABLE BLOWER CONTROLPFP:27200
Removal and InstallationEJS003YN
Variable Blower Control - Front Heater and Cooling Unit Assembly
REMOVAL
1. Remove the glove box assembly. Refer to IP-14, "Instrument Lower Cover RH and Glove Box" .
2. Disconnect the variable blower control electrical connector.
3. 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 (passenger)
4. Variable blower control 5. Air mix door motor (driver) 6. Mode door motor
7. Defroster door motor

REAR BLOWER MOTOR RESISTOR
ATC-169
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Revision: October 20052005 QX56
REAR BLOWER MOTOR RESISTORPFP:27150
Removal and InstallationEJS003YO
Rear Blower Motor Resistor
REMOVAL
1. Remove the rear RH interior trim panel. Refer to EI-35, "BODY SIDE TRIM" .
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

ATC-170
DUCTS AND GRILLES
Revision: October 20052005 QX56
DUCTS AND GRILLESPFP:27860
ComponentsEJS003YP
Ducts - Front Heater and Cooling Unit Assembly
WJIA0956E

DUCTS AND GRILLES
ATC-171
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Revision: October 20052005 QX56
Ducts - Rear Heater and Cooling Unit Assembly
1. Defroster nozzle 2. LH side demister duct 3. LH ventilator duct
4. RH side demister duct 5. RH ventilator duct 6. Center ventilator duct
7. Front heater and cooling unit assembly 8. Floor duct 9. Clips
10. Heat duct
LJIA0142E
1. Rear floor duct 2. Rear heater and cooling unit assembly 3. Rear lower overhead duct
4. Rear upper overhead duct

ATC-172
DUCTS AND GRILLES
Revision: October 20052005 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

DUCTS AND GRILLES
ATC-173
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Revision: October 20052005 QX56
Removal and InstallationEJS003YQ
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-37, "FLOOR TRIM" .
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-35, "BODY SIDE TRIM" .
2. Remove the headliner. Refer to EI-38, "
HEADLINING" .
7. LH ventilator grille 8. RH ventilator grille 9. RH side ventilator and demister grille
10. Storage tray bottom cover (RH)

ATC-174
DUCTS AND GRILLES
Revision: October 20052005 QX56
NOTE:
The rear headliner duct connected to the rear overhead duct is part of the headlining trim panel and is
replaced as an assembly.
3. Remove the two bolts and remove the rear upper and lower 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-35, "BODY SIDE TRIM" .
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 panels as necessary. Refer to IP-10, "INSTRUMENT PANEL ASSEMBLY" or EI-
38, "HEADLINING" .
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.

REFRIGERANT LINES
ATC-175
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Revision: October 20052005 QX56
REFRIGERANT LINESPFP:92600
HFC-134a (R-134a) Service ProcedureEJS003YR
SETTING OF SERVICE TOOLS AND EQUIPMENT
Discharging Refrigerant
WA RN ING:
Avoid breathing A/C refrigerant and lubricant vapor or mist. Exposure may irritate eyes, nose and
throat. Remove HFC-134a (R-134a) refrigerant from the A/C system using certified service equipment
meeting requirements of SAE J2210 HFC-134a (R-134a) recycling equipment or SAE J2201 HFC-134a
(R-134a) recovery equipment. If an accidental system discharge occurs, ventilate the work area before
resuming service. Additional health and safety information may be obtained from the refrigerant and
lubricant manufacturers.
Evacuating System and Charging Refrigerant
1. Shut-off valve 2. A/C service valve 3. Recovery/recycling equipment
WJIA0579E
1. Shut-off valve 2. A/C service valve 3. Recovery/recycling equipment
4. Refrigerant container (HFC-134a) 5. Weight scale (J-39650) 6. Evacuating vacuum pump (J-39699)
7. Manifold gauge set (J-39183)
WJIA0580E