Evaporator Case: Description and Operation

The A/C evaporator core housing is located on the engine side of the dash panel. It contains the following components:
^ A/C evaporator core
^ heater blower motor switch resistor
^ blower motor

The heater air plenum chamber is located on the passenger side of the dash panel under the instrument panel. System air passes through the dash panel from the A/C evaporator core housing to the heater air plenum chamber.

The heater air plenum chamber is responsible for the distribution of system air within the passenger compartment. It contains the following components:
^ heater core
^ A/C air temperature control door
^ heater air damper door
^ windshield defroster door
^ Two vacuum control motors