A/C
Purge Mode Description - A/C
Moisture tends to accumulate in the heater and evaporator module assembly after the engine has been shut off. When the engine is restarted and the A/C system turns on, this moisture may be expelled from the instrument panel outlets toward the front seat occupants.
On start-up, the IPM checks for indications that this may occur. If so, the IPM positions the A/C door to direct air toward the floor and the A/C outlets. The blower motor operates.
A/C purge mode is bypassed if any manual mode is chosen.