Control System Logic
WARNING: This page is about a different car, the 2018 Ford F-550 Super Duty, 2018 Ford F-450 Super Duty, 2018 Ford F-350 Super Duty, and 2018 Ford F-250 Super Duty. However, it is still accessible from the selected car via links, so may be relevant.
The DATC system customer interface is in one or more locations depending on vehicle option content:
- FCIM
- FDIM (part of APIM)
When the touchscreen FDIM or voice commands are used and A/C is selected, the APIM sends the request message over the HS-CAN3 to the GWM. The GWM sends the message to the FCIM over the Medium Speed Controller Area Network (MS-CAN) and the GWM sends the A/C request to the PCM over the HS-CAN1.
When the customer directly inputs an A/C request into the FCIM, the module sends the request to the GWM over the MS-CAN. The GWM sends the request to the PCM over the HS-CAN1.