Rear HVAC Housing

INSTALLATION






1. Position the rear heater-A/C housing (4) into the vehicle.

2. Install the two bolts (5) that secure the rear heater-A/C housing to the two brackets (3) located on the rear inner quarter panel (1). Tighten the bolts to 3 Nm (27 in. lbs.).

3. Install the two nuts (2) that secure the rear heater core tubes (8) to the floor panel (9). Tighten the nuts to 3 Nm (27 in. lbs.).

4. Install the bolt (7) that secures the rear heater core tubes to the rear inner quarter panel. Tighten the bolt to 3 Nm (27 in. lbs.).

5. Connect the body wire harness to the rear heater-A/C wire harness connector (6).

6. Install the rear ceiling distribution duct Air Outlet - Installation.

7. Install the rear floor distribution duct Floor Distribution Duct - Installation.

8. Install the metal support strap to the rear quarter panel and floor. Tighten the fasteners securely.

9. Install the right rear quarter panel trim Quarter Trim Panel - Installation.





10. Raise and support the vehicle.

11. Lubricate new rubber O-ring seals with clean engine coolant and install them onto the rear heater core tube fittings. Use only the specified O-rings as they are made of a special material designed for use with engine coolant. Use only engine coolant of the type recommended for the engine in the vehicle.

CAUTION:
DO NOT apply excessive force on underbody heater lines or rear heater hose quick connect fittings when connecting the connections. Excessive force may damage or deform the fittings and or lines, causing an engine coolant leak.

12. Connect the quick connect fittings (3) for the underbody heater lines (4) to the rear heater core tubes (1) and engage the inserts (2). Make sure the inserts are fully engaged to the rear heater core tube fittings.





NOTE:
Illustration shown with rear body cradle removed for clarity.

13. Remove the tape or plugs from underbody refrigerant extension line fittings and rear expansion valve ports.

14. Lubricate new rubber O-ring seals with clean refrigerant oil and install them onto the rear underbody refrigerant line fittings. Use only the specified O-ring seals as they are made of a special material for the R-134a refrigerant system. Use only refrigerant oil of the type recommended for the A/C compressor in the vehicle.

15. Connect the underbody refrigerant extension lines (3) to the rear A/C expansion valve (1).

16. Install the nut (2) that secures the extension lines and sealing plate (4) to the to the rear A/C expansion valve. Tighten the nut to 23 Nm (17 ft. lbs.).

17. Lower the vehicle.

18. Reconnect the negative battery cable.

19. If the heater core is being replaced, flush the cooling system Service and Repair.

20. Fill the engine cooling system Service and Repair.

21. Evacuate the refrigerant system Refrigerant System Evacuate.

22. Charge the refrigerant system Refrigerant System Charge.

23. Calibrate the A/C-heater control HVAC System Test.