Control System Logic (Non-hybrid)

When the customer inputs an A/C request into the information and entertainment display unit 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 control head the request is sent to the GWM over the MS-CAN. The GWM relays the A/C request message to the PCM over the FD-CAN.

The PCM sends a signal to the A/C compressor control solenoid and the A/C Clutch FET in the BCMC for the A/C Clutch and field coil, commanding the A/C compressor on.

For a list of all the network messages. Refer to: Controller Area Network (CAN) Module Communications Network - System Operation and Component Description .