Climate Control System Network Communication

The controls for the climate control system are in one or more locations depending on vehicle option content:

• HVAC Module (DATC)
• FDIM (part of APIM), if equipped with Sony® sound

On vehicles with Sony® Sound the touch screen and voice commands can be used for climate control inputs.

On vehicles without Sony® Sound the customer inputs are directly inputted in to the HVAC Module (DATC).

When A/C is selected, the HVAC module sends the request to the BCM over the MS-CAN. The BCM then sends the request to the PCM over the HS-CAN.