Gateway Module
WARNING: This page is about a different car, the 2016 Ford Transit-350 HD, 2016 Ford Transit-350, 2016 Ford Transit-250, and 2016 Ford Transit-150. However, it is still accessible from the selected car via links, so may be relevant.
The IPC and BCM are gateway modules. The IPC translates messages on the MS-CAN to the Infotainment Controller Area Network (I-CAN) and vice versa. The BCM translates messages on the HS-CAN to the MS-CAN and vice versa. This allows a message to be distributed throughout all 3 networks.
The IPC and the BCM are the only modules on this vehicle that have this ability.