Gateway Module
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 IPC is the gateway module, translating HS-CAN to MS-CAN and vice versa. The FCDIM is the gateway module, translating MS-CAN to I-CAN and vice versa, allowing a message to be distributed throughout the three networks. The IPC and the FCDIM are the only modules on this vehicle that have this ability.