cooling INFINITI QX56 2010 Factory Service Manual

HEATER COREVTL-23
< ON-VEHICLE REPAIR >
C
DE
F
G H
J
K L
M A
B
VTL
N
O P
HEATER CORE
ComponentINFOID:0000000005147614
Front Heater and Cooling Unit Assembly
AWIIA0086ZZ
1. Heater core cover 2. Heater core pipe bracket3. Heater core
4. Upper bracket 5. Upper heater and cooling unit case 6. A/C evaporator
7. Lower heater and cooling unit case 8. Blower motor 9. Variable blower control
Front
Revision: April 20092010 QX56

VTL-24
< ON-VEHICLE REPAIR >
HEATER CORE
Rear Heater and Cooling Unit Assembly
Removal and InstallationINFOID:0000000005147615
FRONT HEATER CORE
Removal
1. Remove the front heater and cooling unit assembly. Refer to VTL-17, "Removal and Installation".
2. Remove the four screws and remove the upper bracket.
3. Remove the four screws and remove the heater core cover.
4. Remove the heater core pipe bracket.
AWIIA0087ZZ
1. Front cover 2. Evaporator and heater core case 3. Evaporator
4. Side cover 5. Heater core6. Blower motor
7. Blower motor case 8. Variable blower control
Front
Revision: April 20092010 QX56

HEATER COREVTL-25
< ON-VEHICLE REPAIR >
C
DE
F
G H
J
K L
M A
B
VTL
N
O P
5. Remove the heater core. NOTE:
If equipped and the in-cabin microfilters are contaminated from
coolant leaking from the heater core, replace the in-cabin micro-
filters with new ones before installing the new heater core.
Installation
Installation is in the reverse order of removal.
REAR HEATER CORE
Removal
1. Partially drain the engine cooling system. Refer to CO-11, "Changing Engine Coolant".
2. Remove the luggage side finisher lower RH. Refer to INT-19, "
Removal and Installation".
3. Disconnect the rear heater hoses from the heater core.
4. Remove the rear heater core bracket.
5. Remove the heater core.
Installation
Installation is in the reverse order of removal.
LJIA0134E
Revision: April 20092010 QX56

VTL-26
< ON-VEHICLE REPAIR >
DEFROSTER DOOR MOTOR
DEFROSTER DOOR MOTOR
Removal and InstallationINFOID:0000000005147616
Defroster Door Motor - Front Heater and Cooling Unit Assembly
REMOVAL
1. Remove the BCM. Refer to BCS-59, "Removal and Installation".
2. Remove the Bose speaker amplifier if equipped. Refer to AV-182, "
Removal and Installation".
3. Disconnect the defroster door motor electrical connector.
4. Remove the three screws and remove the defroster 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
Revision: April 20092010 QX56

INTAKE DOOR MOTORVTL-27
< ON-VEHICLE REPAIR >
C
DE
F
G H
J
K L
M A
B
VTL
N
O P
INTAKE DOOR MOTOR
Removal and InstallationINFOID:0000000005147617
Intake Door Motor - Front Heater and Cooling Unit Assembly
REMOVAL
1. Remove the front heater and cooling unit assembly. Refer to VTL-17, "Removal and Installation".
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
Revision: April 20092010 QX56

VTL-28
< ON-VEHICLE REPAIR >
MODE DOOR MOTOR
MODE DOOR MOTOR
ComponentsINFOID:0000000005147618
Front Mode Door Motor - Front Heater and Cooling Unit Assembly
LJIA0139E
1. Front heater and cooling unit assembly 2. Intake door motor3. Air mix door motor (driver)
4. Variable blower control 5. Air mix door motor (passenger) 6. Mode door motor
7. Defroster door motor
Revision: April 20092010 QX56

MODE DOOR MOTORVTL-29
< ON-VEHICLE REPAIR >
C
DE
F
G H
J
K L
M A
B
VTL
N
O P
Rear Mode Door Motor - Rear Heater and Cooling Unit Assembly
Removal and InstallationINFOID:0000000005147619
FRONT MODE DOOR MOTOR
Removal
1. Remove the instrument lower panel LH. Refer to IP-11, "Exploded View".
2. Remove the accelerator pedal. Refer to ACC-4, "
Removal and Installation".
3. Remove the BCM. Refer to BCS-59, "
Removal and Installation".
4. Remove the BOSE amp. (if equipped). Refer to AV-182, "
Removal and Installation".
5. Remove the center console lower cover LH. Refer to IP-20, "
Removal and Installation".
6. Disconnect the front mode door motor connector.
7. Remove the two screws and remove the front mode door motor.
Installation
Installation is in the reverse order of removal.
REAR MODE DOOR MOTOR
Removal
1. Remove the luggage side finisher lower and upper RH. Refer to INT-19, "Removal and Installation".
2. Remove the rear heater and cooling unit assembly. Refer to VTL-17, "
Removal and Installation".
3. Disconnect the rear mode door motor connector.
4. Remove the two screws and remove rear mode door motor.
Installation
Installation is in the reverse order of removal.
ALIIA0065ZZ
1. Variable blower control 2. Mode door motor3. Rear heater and cooling unit assembly
Front
Revision: April 20092010 QX56

VTL-30
< ON-VEHICLE REPAIR >
AIR MIX DOOR MOTOR
AIR MIX DOOR MOTOR
ComponentINFOID:0000000005147620
Front Air Mix Door Motors - Front Heater and Cooling Unit Assembly
LJIA0139E
1. Front heater and cooling unit assembly 2. Intake door motor3. Air mix door motor (driver)
4. Variable blower control 5. Air mix door motor (passenger) 6. Mode door motor
7. Defroster door motor
Revision: April 20092010 QX56

AIR MIX DOOR MOTORVTL-31
< ON-VEHICLE REPAIR >
C
DE
F
G H
J
K L
M A
B
VTL
N
O P
Rear Air Mix Door Motor - Rear Heater and Cooling Unit Assembly
Removal and InstallationINFOID:0000000005147621
FRONT AIR MIX DOOR MOTOR (DRIVER)
Removal
1. Remove the front heater and cooling unit assembly. Refer to VTL-17, "Removal and Installation".
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.
FRONT AIR MIX DOOR MOTOR (PASSENGER)
Removal
1. Remove the center console lower cover LH. Refer to IP-12, "Removal and Installation".
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 INT-19, "Removal and Installation".
ALIIA0066ZZ
1. Air mix door motor2. Heater core 3. Blower motor
4. Variable blower control 5. Rear heater and cooling unit assembly Front
Revision: April 20092010 QX56

DUCTS AND GRILLESVTL-33
< ON-VEHICLE REPAIR >
C
DE
F
G H
J
K L
M A
B
VTL
N
O P
DUCTS AND GRILLES
ComponentINFOID:0000000005147624
Ducts - Front Heater and Cooling Unit Assembly
AWIIA0090ZZ
1. Defroster nozzle 2. LH side demister duct3. LH ventilator duct
4. RH side demister duct 5. RH ventilator duct6. Center ventilator duct
Revision: April 20092010 QX56