ACTIVE DTCs - ATC AND MTC SYSTEMS
WARNING: This page is about a different car, the 2008 Dodge Magnum, 2008 Dodge Charger, and 2008 Chrysler 300. However, it is still accessible from the selected car via links, so may be relevant.
Refer to HEATING & AIR CONDITIONING - ELECTRICAL DIAGNOSTICS article to diagnose HVAC system DTCs.