Airflow Mode
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.
Airflow direction, or airflow mode, is controlled by a series of mode doors connected to an actuator, which are operated by reversible electronic actuator motor and mechanical actuator-to-door linkage. Mode door(s) direct air to flow through HVAC housing and to desired air vent outlets. ATC module sends voltage pulse signals to actuator motor to change position of mode doors for desired airflow mode settings.