Normal Operation

• DTC U0121:00 (Lost Communication With Anti-Lock Brake System (ABS) Control Module: No Sub Type Information) - sets in continuous memory in the Instrument Panel Cluster (IPC) if data messages received from the ABS module over the High Speed Controller Area Network (HS-CAN) are missing for 5 seconds or more. For a complete list of all network messages, refer to MODULE COMMUNICATIONS NETWORK .

This pinpoint test is intended to diagnose the following: 

• ABS module
• IPC