HVAC - Service Information: Operation: Notes
WARNING: This page is about a different car, the 2005 Dodge Durango. However, it is still accessible from the selected car via links, so may be relevant.
The standard front and the optional rear heating-A/C systems used in this vehicle are blend-air type systems. In a blend-air heating-A/C system, a blend-air door controls the amount of conditioned air that is allowed to flow through, or around, the heater core. A temperature control determines the discharge air temperature by operating an electric actuator, which operates the blend-air door. This allows an almost immediate control of the output air temperature of the systems. Both the front and rear A/C systems are designed for the use of non-CFC, R-134a refrigerant and use an A/C evaporator to cool and dehumidify the incoming air prior to blending it with the heated air.