Retrieving Diagnostic Trouble Codes: Notes
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 Automatic Temperature Control (ATC) systems are controlled by the Body Control Module (BCM). Both systems can be diagnosed by the DRBIII(R) scan tool or the vehicles own control head display.