Calibration Test: Description
WARNING: This page is about a different car, the 2001 Dodge Grand Caravan and 2001 Chrysler Town & Country. However, it is still accessible from the selected car via links, so may be relevant.
Automatic Temperature Control (ATC) module must be reset or recalibrated each time a door actuator is replaced or when ATC module is replaced. It is necessary for ATC module to learn feedback voltage values for each door stop position for all doors in front HVAC unit housing and rear HVAC unit housing. If an actuator blend door, mode door, or if recirculation door, or door actuator are out of calibration, ATC system will not perform a maximum efficiency.