Control System Logic

When the customer inputs an A/C request into the display unit or by voice command (if equipped), the APIM sends the request to the GWM over the HS-CAN3. The GWM relays the request to the PCM over the FD-CAN.

When the customer directly inputs an A/C request into the HVAC Control Module, the module sends the request to the GWM over the MS-CAN. The GWM sends the request to the PCM over the FD-CAN.

The PCM controls the A/C Clutch Control FET in the BCMC. For a list of all the network messages, Refer to: Controller Area Network (CAN) Module Communications Network - System Operation and Component Description .

The HVAC Control Module requires PMI when it is replaced.