Control System Logic
When the cutomer inputs an A/C request into the Center Display or by voice command, the APIM sends the request to the GWM over the HS-CAN3. If the A/C request is inputted through the HVAC auto control head the request is sent to the GWM over the MS-CAN The GWM relays the request to the PCM over the FD-CAN1.
The PCM controls the A/C clutch control FET in the BCMC.
For a list of all network messages, Refer to: Controller Area Network (CAN) Module Communications Network - System Operation and Component Description .