Normal Operation
WARNING: This page is about a different car, the 2012 Ford Pickup. However, it is still accessible from the selected car via links, so may be relevant.
- DTC U0121:00 (Lost Communication With Anti-Lock Brake System (ABS) Control Module: No Sub-Type Information) - sets in continuous memory in the TCCM if data messages received from the ABS module over the HS-CAN are missing for 5 seconds or longer with ignition in RUN and battery voltage in range. For a complete list of all network messages, REFER to MODULE COMMUNICATIONS NETWORK .
This pinpoint test is intended to diagnose the following:
- ABS module
- TCCM