Air Distribution Control - Dual Zone Automatic System

Air distribution into the cabin is controlled automatically by the ATC module unless any manual overrides have been requested. Manual overrides can be made by pressing the appropriate air distribution momentary switch on the control panel. If a manual override has been requested, the 'AUTO' LED located in the center of the blower motor rotary controller will extinguish.

NOTE: The central rotary controller contains 2 LED's. The top (round) LED will illuminate when the blower motor is under automatic control. The bottom (rectangular) LED will illuminated when air distribution into the cabin is under automatic control.

Air distribution can be returned to automatic control by pressing the 'AUTO' switch located in the center of the blower motor rotary controller. This will illuminate the 'AUTO' LED and allow the ATC module to control air distribution in line with its 'comfort' algorithm

Air distribution is controlled by 2 air distribution doors. The ATC module controls the position of the air distribution doors by providing LIN bus messages to the door stepper motors. Hall effect sensors located within the stepper motors inform the ATC module that movement of the stepper motors is taking place.