Auxiliary HVAC Module

Auxiliary HVAC Module Removal and Installation

Tools Required
- J 39400-A Halogen Leak Detector

Removal Procedure

1. Recover the refrigerant from the air conditioning (A/C) system. Refer to Refrigerant Recovery and Recharging Service and Repair.
2. Drain the engine coolant. Refer to Cooling System Draining and Filling Service and Repair.
3. Raise the vehicle.
4. Remove the right rear wheelhouse liner panel. Refer to Rear Wheelhouse Panel Liner Replacement Service and Repair.






5. Disconnect the heater lines (2, 3) from the auxiliary HVAC module at the underside of the vehicle.
6. Disconnect the air conditioning lines (4, 5) from the auxiliary HVAC module at the underside of the vehicle.
7. Remove the nuts (6) from the studs (1) that secure the auxiliary HVAC module to the underside of the vehicle.
8. Lower the vehicle.
9. Remove the right rear quarter trim panel. Refer to Quarter Lower Rear Trim Panel Replacement Service and Repair.
10. Disconnect the electrical connectors from the auxiliary HVAC module.






11. Remove the upper auxiliary air distributor duct (2). Refer to Auxiliary Air Conditioning Air Outlet Duct Replacement Service and Repair.






12. Remove the lower auxiliary air distributor duct (2). Refer to Auxiliary Heater Air Outlet Duct Replacement Service and Repair.






13. Remove the fasteners (3) retaining the auxiliary HVAC module to the vehicle.
14. Remove the auxiliary HVAC module (4) from the vehicle.

Installation Procedure






1. Install the auxiliary HVAC module assembly (4) to the vehicle.
2. Install the 2 bolts (3) inside the vehicle in order to retain the auxiliary HVAC module to the vehicle.






3. Install the upper auxiliary air distributor duct. Refer to Auxiliary Air Conditioning Air Outlet Duct Replacement Service and Repair.






4. Install the lower auxiliary air distributor duct. Refer to Auxiliary Heater Air Outlet Duct Replacement Service and Repair.
5. Connect the electrical connectors to the auxiliary HVAC module.
6. Install the right rear quarter trim panel. Refer to Quarter Lower Rear Trim Panel Replacement Service and Repair.






7. Raise the vehicle.
8. Install the nuts that secure the auxiliary HVAC module to the vehicle.

Notice: Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.

Tighten
Tighten the nuts to 9 Nm (80 lb in).

9. Install the air conditioning lines (4, 5) and the nut (6) to the auxiliary HVAC module.

Tighten
Tighten the nut to 16 Nm (12 lb ft).

10. Install the heater lines (2, 3) to the auxiliary HVAC module at the underside of vehicle.
11. Install the right rear wheelhouse liner panel. Refer to Rear Wheelhouse Panel Liner Replacement Service and Repair.
12. Lower the vehicle.
13. Fill the engine coolant. Refer to Cooling System Draining and Filling Service and Repair.
14. Recharge the refrigerant to the system. Refer to Refrigerant Recovery and Recharging Service and Repair.
15. Leak test the fittings of the component using the J 39400-A.