2006 INFINITI QX56 instrument panel

HEATER & COOLING UNIT ASSEMBLYATC-155
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Revision: November 2009 2006 QX56
4. Drain the coolant from the engine cooling system. Refer to MA-13, "DRAINING ENGINE COOLANT" .
5. Disconnect the front heater hoses from the front heater core.
6. Disconnect the high/low pressure pipes from the front expansion valve.
7. Remove the instrument panel and console panel. Refer to IP-10, "
INSTRUMENT PANEL ASSEMBLY" .
8. Remove the steering column. Refer to PS-10, "
STEERING COLUMN" .
9. Disconnect the instrument panel wire harness at the RH and LH in-line connector brackets, and the fuse block (J/B) electrical connectors. Refer to PG-4, "
POWER SUPPLY ROUTING CIRCUIT" .
10. Disconnect the steering member from each side of the vehicle body.
11. Remove the front heater and cooling unit assembly with it attached to the steering member, from the vehi- cle.
CAUTION:
Use care not to damage the seats and interior trim panels when removing the front heater and
cooling unit assembly with it attached to the steering member.
12. Remove the front heater and cooling unit assembly from the steering member.
Installation
Installation is in the reverse order of removal.
CAUTION:

Replace the O-ring of the low-pressure pipe and high-pressure pipe with a new one, and apply
compressor oil to it when installing it.

After charging the refrigerant, check for leaks.
NOTE:

Fill the engine cooling system with the specified coolant mixture. Refer to MA-14, "REFILLING ENGINE
COOLANT" .

Recharge the A/C system. Refer to ATC-171, "Evacuating System and Charging Refrigerant" .
REAR HEATER AND COOLING UNIT ASSEMBLY
Removal
1. Discharge the refrigerant from the A/C system. Refer to ATC-171, "Discharging Refrigerant" .
2. Drain the coolant from the engine cooling system. Refer to MA-13, "
DRAINING ENGINE COOLANT" .
3. Disconnect the rear heater core hoses from the rear heater core.
4. Disconnect the rear A/C pipes from the rear expansion valve.
5. Remove the luggage side finisher lower RH. Refer to EI-35,
"BODY SIDE TRIM" .
6. Disconnect the following electrical connectors:

Rear blower motor

Rear blower motor resistor

Rear air mix door motor
7. Disconnect the ducts from the rear heater and cooling unit assembly.
8. Remove the rear heater and cooling unit assembly.
Installation
Installation is in the reverse order of removal.
CAUTION:

Replace the O-ring of the low-pressure pipe and high-pressure pipe with a new one, and apply
compressor oil to it when installing it.

After charging the refrigerant, check for leaks.
NOTE:

Fill the engine cooling system with the specified coolant mixture. Refer to MA-14, "REFILLING ENGINE
COOLANT" .

Recharge the A/C system. Refer to ATC-171, "Evacuating System and Charging Refrigerant" .
LJIA0021E

MODE DOOR MOTORATC-161
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Revision: November 2009 2006 QX56
MODE DOOR MOTORPFP:27731
Removal and InstallationEJS003YK
Mode Door Motor - Front Heater and Cooling Unit Assembly
REMOVAL
1. Remove the center console lower cover LH. Refer to IP-10, "INSTRUMENT PANEL ASSEMBLY" .
2. Disconnect the mode door motor electrical connector.
3. 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 MOTORATC-163
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FRONT AIR MIX DOOR MOTOR (PASSENGER)
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.
REAR AIR MIX DOOR MOTOR
Removal
1. Remove the luggage side lower finisher RH. Refer to EI-40, "LUGGAGE FLOOR 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-164
VARIABLE BLOWER CONTROL
Revision: November 20092006 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, "Lower Instrument Panel 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 (driver)
4. Variable blower control 5. Air mix door motor (passenger) 6. Mode door motor
7. Defroster door motor

ATC-168
DUCTS AND GRILLES
Revision: November 20092006 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 GRILLESATC-169
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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-16, "
REMOVAL AND INSTALLATION" .
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 front heater and cooling unit assembly. Refer to ATC-154, "
FRONT HEATER AND COOLING
UNIT ASSEMBLY" .
3. 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 front heater and cooling unit assembly. Refer to ATC-154, "
FRONT HEATER AND COOLING
UNIT ASSEMBLY" .
3. 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 front heater and cooling unit assembly. Refer to ATC-154, "
FRONT HEATER AND COOLING
UNIT ASSEMBLY" .
3. 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 front heater and cooling unit assembly. Refer to ATC-154, "
FRONT HEATER AND COOLING
UNIT ASSEMBLY" .
3. Remove the defroster nozzle.
4. Remove the RH and LH side demister ducts.
5. Remove the RH and LH ventilator ducts.
6. 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" .
7. LH ventilator grille 8. RH ventilator grille 9. RH side ventilator and demister grille
10. Storage tray bottom cover (RH)

ATC-170
DUCTS AND GRILLES
Revision: November 20092006 QX56
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 luggage side finisher lower RH. Refer to EI-40, "LUGGAGE FLOOR TRIM" .
2. Remove the headliner. Refer to EI-38, "
HEADLINING" .
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 luggage side finisher lower RH. Refer to EI-40, "LUGGAGE FLOOR 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.

AV-56
AUDIO
Revision: November 20092006 QX56
5. Remove Bose speaker amp. screws (A) and remove Bose
speaker amp. from Bose speaker amp./satellite radio tuner
bracket.
Installation
Installation is in the reverse order of removal.
CENTER SPEAKER
Removal
1. Remove center console. Refer to IP-16, "REMOVAL AND INSTALLATION" .
2. Remove cluster lid D. Refer to IP-12, "
Removal" .
3. Disconnect center speaker connectors.
4. Remove the center speaker screws and remove the center speaker.
Installation
Installation is in the reverse order of removal.
FRONT DOOR SPEAKER
Removal
1. Remove front door finisher. Refer to EI-32, "DOOR FINISHER" .
2. Remove the four front door speaker screws.
3. Disconnect connector and remove front door speaker.
Installation
Installation is in the reverse order of removal.
FRONT TWEETER
Removal
1. Remove front tweeter grille. Refer to IP-10, "INSTRUMENT PANEL ASSEMBLY" .
LKIA0678E
WKIA1799E
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