Blower Motor 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.
When blower motor control selector is in OFF position, A/C clutch is disabled and outside/recirculated air door is closed to outside air. There are 4 blower speeds: low, medium-low (M1), medium-high (M2) and high. Blower motor resistor controls blower motor speeds.