Normal Operation
WARNING: This page is about a different car, the 2014 Lincoln MKX and 2014 Ford Edge. 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 the Cruise-Control Module (C-CM) if data messages received from the ABS module over the High Speed Controller Area Network (HS-CAN) are missing. For a complete list of all network messages, refer to MODULE COMMUNICATIONS NETWORK .
- DTC U0129 (Lost Communication With Brake System Control Module) - sets in the PCM if data messages received from the ABS module over the High Speed Controller Area Network (HS-CAN) are missing. The adaptive cruise control is deactivated if it does not receive an active braking message from the ABS module. For a complete list of all network messages, refer to MODULE COMMUNICATIONS NETWORK .
This pinpoint test is intended to diagnose the following:
- ABS module
- C-CM