Operation CHARM: Car repair manuals for everyone.

Selector Buttons

The heater and A/C control has a selector button for each of the following operating functions:
^ RECIRC
^ AUTO
^ MODE
^ OUTSIDE AIR
^ A/C
^ FRONT DEFROST
^ REAR DEFOG

If the driver presses AUTO, the following actions occur:
^ The IPM evaluates the internal temperature selected by the operator and the information provided by the system's network of sensors.
^ The IPM then initiates the appropriate air intake point, air discharge points, fan speed, and if the ambient temperature is greater than 3°C (38°F) enables the A/C compressor.