Rear HVAC Housing

ASSEMBLY

CAUTION: Be certain to adjust the refrigerant oil level when servicing the A/C refrigerant system Refrigerant Oil Level . Failure to properly adjust the refrigerant oil level will prevent the A/C system from operating as designed and can cause serious A/C compressor damage.

NOTE: When replacing multiple A/C system components, refer to the Refrigerant Oil Capacities chart to determine how much oil should be added to the refrigerant systemRefrigerant Oil Level .

NOTE: If the rear A/C evaporator is being replaced, add 30 milliliters (1 fluid ounce) of refrigerant oil to the refrigerant system. Use only refrigerant oil of the type recommended for the A/C compressor in the vehicle.





1. Install the blend-air door (1) and the mode-air door (4) onto the pivots located in the inboard half of the rear HVAC housing (3).
2. Install the rear A/C evaporator (2) into the inboard half of the rear HVAC housing.





3. Align the pivot shafts of the blend-air door and the mode-air door to the pivot holes located in the outboard half of the rear HVAC housing and install the two halves of the rear housing (3) together. Make sure the three plastic retaining tabs (1) are fully engaged.
4. Install the 15 screws (2) and three metal clips (4) that secure the two halves of the rear HVAC housing together. Tighten the screws to 2 Nm (17 in. lbs.).





5. Install the rear blend door actuator (6) and the rear mode door actuator (4) to the rear HVAC housing (5) Blend Door Actuator - Installation and Mode Door Actuator - Installation.
6. Install the rear blower motor (2) .
7. Install the rear blower motor resistor (1) .
8. Install the rear HVAC wire harness (3) onto the rear HVAC housing and connect it to the rear blower motor resistor, rear blower motor, rear blend door actuator and the rear mode door actuator. Make sure the harness is routed through all wiring retainers.





9. Position the flange (5) onto the bottom of the rear HVAC housing (3). Make sure that the evaporator drain is clean and unrestricted.
10. Install the four screws (4) and four clips (2) that secure the flange to the bottom of the rear HVAC housing. Tighten the screws to 2 Nm (17 in. lbs.).
11. If removed, install the rear A/C expansion valve (1) onto the rear A/C evaporator A/C Expansion Valve - Installation.





12. Install the rear heater core (2) into the end of the rear HVAC housing (3). Make sure that the foam seals are properly installed and that the two retaining tabs (1) are fully engaged.





13. Partially bend the inner half of the flange (2) located at the bottom of the rear HVAC housing (3) downward and install the heater core tubes (4) into the flange.
14. Install the foam seal (1) onto the flange. If the seal is deformed or damaged, it must be replaced.
15. Install the rear HVAC housing .
16. If the rear A/C evaporator is being replaced, add 30 milliliters (1 fluid ounce) of refrigerant oil to the refrigerant system. When replacing multiple A/C system components, refer to the Refrigerant Oil Capacities chart to determine how much oil should be added to the refrigerant system Refrigerant Oil Level. Use only refrigerant oil of the type recommended for the A/C compressor in the vehicle.