Infiniti QX56 (JA60). Manual - part 997

HEATER CORE

VTL-23

< ON-VEHICLE REPAIR >

C

D

E

F

G

H

J

K

L

M

A

B

VTL

N

O

P

HEATER CORE

Component

INFOID:0000000005147614

Front Heater and Cooling Unit Assembly

AWIIA0086ZZ

1.

Heater core cover

2.

Heater core pipe bracket

3.

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

VTL-24

< ON-VEHICLE REPAIR >

HEATER CORE

Rear Heater and Cooling Unit Assembly

Removal and Installation

INFOID: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 core

6.

Blower motor

7.

Blower motor case

8.

Variable blower control

Front

HEATER CORE

VTL-25

< ON-VEHICLE REPAIR >

C

D

E

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

VTL-26

< ON-VEHICLE REPAIR >

DEFROSTER DOOR MOTOR

DEFROSTER DOOR MOTOR

Removal and Installation

INFOID: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