Normal Operation

WARNING: This page is about a different car, the 2012 Ford Pickup, 2012 Ford F550 Super Duty, 2012 Ford F450 Super Duty, and 2012 Ford Cab & Chassis. However, it is still accessible from the selected car via links, so may be relevant.

DTC U0155 (Lost Communication With Instrument Panel Cluster (IC) Control Module) - sets in the Trailer Brake Control (TBC) module if data messages received from the IPC are missing. The IPC sends a TRAILER BRAKE CONFIG message to the TBC module. For a complete list of all network messages, refer to INSTRUMENTATION, MESSAGE CENTER, AND WARNING CHIMES .

This pinpoint test is intended to diagnose the following:

IPC
TBC module