Manual Temperature Control
WARNING: This page is about a different car, the 2002 Dodge Intrepid, 2002 Chrysler Intrepid, 2002 Chrysler Concorde, and 2002 Chrysler 300M. However, it is still accessible from the selected car via links, so may be relevant.
The BCM interfaces with the A/C-heater control head via hard-wired circuits. Information for the temperature setting is supplied to the BCM via a potentiometer. The rear defogger switch, A/C switch and the mode setting is supplied via a resistive multiplexed circuit. The system on/off status is supplied by a dedicated circuit. The BCM drives the A/C and rear defogger indicator lights via hard-wired circuit to the A/C-heater control head.