Control System Logic

WARNING: This page is about a different car, the 2017 Ford Police Interceptor Utility and 2017 Ford Explorer. However, it is still accessible from the selected car via links, so may be relevant.

The DATC system controls are in one or more locations depending on vehicle option content:

Front Controls Interface Control Module B (FCIM-B)
Touchscreen FDIM (part of APIM)

When the FDIM touchscreen 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 request to the PCM over the HS-CAN1. The PCM controls the A/C clutch relay. The GWM also sends the request to the HVAC control module over the MS-CAN.

When the customer inputs an A/C request into the Front Controls Interface Control Module B (FCIM-B), the module sends the request to the GWM over the HS-CAN3. The GWM sends the request to the PCM over the HS-CAN1. The PCM controls the A/C clutch relay. The GWM also sends the request to the HVAC control module over the MS-CAN.

The HVAC control module requires PMI when it is replaced.