2008 INFINITI QX56 Factory Service Manual

battery capacity lug pattern belt air filter fuse chart trunk

Page 3857 of 4083

INFINITI QX56 2008 Factory Service Manual HEATER & COOLING UNIT ASSEMBLYVTL-17
< ON-VEHICLE REPAIR >
C
DE
F
G H
J
K L
M A
B
VTL
N
O P
1. Move the two front seats to the rear most position on the seat track.
2. Disconnect the battery negative

HEATER & COOLING UNIT ASSEMBLYVTL-17
< ON-VEHICLE REPAIR >
C
DE
F
G H
J
K L
M A
B
VTL
N
O P
1. Move the two front seats to the rear most position on the seat track.
2. Disconnect the battery negative terminal and battery positive terminal.
3. Discharge the refrigerant from the A/C system. Refer to HA-20, "
HFC-134a (R-134a) Service Procedure".
4. Drain the coolant from the engine cooling system. Refer to CO-11, "
Changing 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-12, "
Removal and Installation".
8. Remove the steering column. Refer to ST-20, "
Removal and Installation".
9. Disconnect the instrument panel wire harness at t he RH and LH in-line connector brackets, and the fuse
block (J/B) electrical connectors. Refer to PG-9, "
Wiring Diagram — Battery Power Supply —".
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 at tached to the steering member.
12. Remove the front heater and cooling uni t 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 com-
pressor 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 CO-11, "
Changing Engine Cool-
ant".
• Recharge the A/C system. Refer to HA-20, "
HFC-134a (R-134a) Service Procedure".
REAR HEATER AND COOLING UNIT ASSEMBLY
Removal
1. Discharge the refrigerant from the A/C system. Refer to HA-20, "HFC-134a (R-134a) Service Procedure".
2. Drain the coolant from the engine cooling system. Refer to CO-11, "
Changing Engine Coolant".
3. Remove the luggage side finisher lower RH. Refer to INT-19, "
Removal and Installation".
4. Disconnect the rear heater core hoses from the rear heater core.
5. Disconnect the rear A/C pipes from the rear expansion valve.
6. Disconnect the following electrical connectors: • Rear blower motor
• Rear variable blower control
• 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 com- pressor 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 CO-11, "
Changing Engine Cool-
ant".
• Recharge the A/C system. Refer to HA-20, "
HFC-134a (R-134a) Service Procedure".
Revision: March 2010 2008 QX56

Page 3858 of 4083

INFINITI QX56 2008 Factory Service Manual VTL-18
< ON-VEHICLE REPAIR >
HEATER CORE
HEATER CORE
ComponentINFOID:0000000001516612
Front Heater and Cooling Unit Assembly
AWIIA0086ZZ
1. Heater core cover2. Heater core pipe bracket3. Heater core
4

Page 3859 of 4083

INFINITI QX56 2008 Factory Service Manual HEATER COREVTL-19
< ON-VEHICLE REPAIR >
C
DE
F
G H
J
K L
M A
B
VTL
N
O P
Rear Heater and Cooling Unit Assembly
Removal and InstallationINFOID:0000000001516613
FRONT HEATER CORE
Removal
1. Remove the f

Page 3860 of 4083

INFINITI QX56 2008 Factory Service Manual VTL-20
< ON-VEHICLE REPAIR >
HEATER CORE
5. Remove the heater core.NOTE:
If the in-cabin microfilters are c ontaminated from coolant leaking
from the heater core, replace the in-cabin microfilters wit

Page 3861 of 4083

INFINITI QX56 2008 Factory Service Manual DEFROSTER DOOR MOTORVTL-21
< ON-VEHICLE REPAIR >
C
DE
F
G H
J
K L
M A
B
VTL
N
O P
DEFROSTER DOOR MOTOR
Removal and InstallationINFOID:0000000001516614
Defroster Door Motor - Front Heater and Cooling U

Page 3862 of 4083

INFINITI QX56 2008 Factory Service Manual VTL-22
< ON-VEHICLE REPAIR >
INTAKE DOOR MOTOR
INTAKE DOOR MOTOR
Removal and InstallationINFOID:0000000001516615
Intake Door Motor - Front Heater and Cooling Unit Assembly
REMOVAL
1. Remove the front

Page 3863 of 4083

INFINITI QX56 2008 Factory Service Manual MODE DOOR MOTORVTL-23
< ON-VEHICLE REPAIR >
C
DE
F
G H
J
K L
M A
B
VTL
N
O P
MODE DOOR MOTOR
ComponentsINFOID:0000000001516616
Front Mode Door Motor - Front Heater and Cooling Unit Assembly
LJIA0139E

Page 3864 of 4083

INFINITI QX56 2008 Factory Service Manual VTL-24
< ON-VEHICLE REPAIR >
MODE DOOR MOTOR
Rear Mode Door Motor - Rear Heater and Cooling Unit Assembly
Removal and InstallationINFOID:0000000001516617
FRONT MODE DOOR MOTOR
Removal
1. Remove the ce

Load next 8 pages

Page: < prev 1-10 ... 3825-3832 3833-3840 3841-3848 3849-3856 3857-3864 3865-3872 3873-3880 3881-3888 3889-3896 ... 4088 next >

remote start change time deactivate airbag relay lock sport mode