Mode Door Control Selector
WARNING: This page is about a different car, the 1999 Dodge Intrepid and 1999 Chrysler Concorde. However, it is still accessible from the selected car via links, so may be relevant.
Mode door control selector is active whenever ignition is on. There are 7 mode positions: defrost, mix (defrost and floor), floor, bi-level, panel, panel with recirculation (A/C only) and bi-level with recirculation (A/C only).