Manuals through 2025 now available!
Our trusted friends have launched a new website named LEMON, which has newer manuals. It also contains all the CHARM manuals.
LEMON is the logical successor to CHARM, I recommend you try it!
Link:
lemon-manuals.la
A/C Switch Status/Evaporator Temperature Status
When the ignition is in the RUN position, the
Body Control Module (BCM) monitors the evaporator temperature and the status of the A/C switch (manual A/C only) or the current status of the ATC system. Based on this information, the BCM sends a CCD message to the powertrain control module (PCM) indicating the A/C switch status and the evaporator temperature status.