Control System Logic (Hybrid)

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

When the SOBDMC of the HEV requests that the ACCM operate the electric compressor. This takes the place of the non-hybrid A/C clutch and relay engagement.

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 HVAC control module 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 HVAC control module, 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.

The HVAC control module requires PMI when it is replaced.