Front Controls Interface Module (FCIM)
WARNING: This page is about a different car, the 2012 Ford Fiesta. However, it is still accessible from the selected car via links, so may be relevant.
The Front Controls Interface Module (FCIM) is the customer interface to the audio system. It is separate from the ACM, and utilizes a dedicated Local Interconnect Network (LIN) with the FCDIM to transmit button press information.