Control System Logic

Climate control commands are input through and controlled by the FCIM. Inputs can also be commanded through voice commands or the touch screen FDIM (part of APIM).

When the customer uses the FDIM touchscreen or voice commands to select any climate control function, the APIM sends a function request message over the HS-CAN3 to the GWM. The GWM sends the requests to the FCIM over the MS-CAN. For A/C requests, the GWM sends the request to the SOBDMC and the ACCM over the HS-CAN1.

When the customer directly inputs any climate control function to the FCIM, the module sends the request to the GWM over the MS-CAN. For A/C requests, the GWM sends the request to the SOBDMC and the ACCM over the HS-CAN1.

For A/C requests, when all conditions are met, the SOBDMC sends the enable request over the HS-CAN1 to the ACCM.