Removal and Installation - Front Heating and Cooling Unit Assembly

HEATER & COOLING UNIT ASSEMBLY

Removal and Installation - Front Heating and Cooling Unit Assembly


REMOVAL


CAUTION:
Before servicing, turn the ignition switch off, disconnect both battery cables and wait at least three minutes.
NOTE:
When removing components such as hoses, lines/tubes, etc., cap or plug openings to prevent fluid from leaking.
1.Disconnect the negative and positive battery terminals and wait at least three minutes.
2.Discharge the refrigerant. Refer to "Recycle Refrigerant" Recycle Refrigerant.
3.Drain the engine coolant. Refer to "Changing Engine Coolant" Service and Repair.
4.Remove the instrument panel assembly. Refer to "Removal and Installation" Removal and Installation.
5.Remove the steering column. Refer to "Removal and Installation" Removal and Installation.
6.Remove the front floor connecting duct (LH/RH). Refer to "Exploded View" Exploded View.





7.Disconnect the harness connectors (B) from the super multiple junction (SMJ) block (A).
8.Disconnect the high-pressure and low-pressure pipe from the front expansion valve.

CAUTION:
Cap or wrap the joint of the pipe with suitable material such as vinyl tape to avoid the entry of air.
9.Disconnect the heater hoses from the front heater core.
10.Remove the cowl top extension. Refer to "Removal and Installation" Removal and Installation.





11.Remove the body panel plug (A), then remove the steering member bolt.
12.Remove the bolts that retain the steering member to the vehicle body.
13.Disconnect the front drain hose from the front heating and cooling unit assembly.
14.Disconnect the harness connectors from the front heating and cooling unit assembly and steering member.
15.Remove the front heating and cooling unit assembly and steering member from the vehicle as an assembly.

CAUTION:
Use care not to damage the seats when removing the steering member.
16.Remove the bolts that retain the front heating and cooling unit assembly to the steering member.
17.Separate the front heating and cooling unit assembly from the steering member.

INSTALLATION

Revision: March 20122013 Infiniti JX
Installation is in the reverse order of removal.