Tests AF: DTC U0121 - Lost Communication With Anti-Lock Brake System Control Module (ABS)
PINPOINT TEST AF: DTC U0121 - LOST COMMUNICATION WITH ANTI-LOCK BRAKE SYSTEM CONTROL MODULE (ABS)Normal Operation
The instrument cluster sets DTC U0121 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 Information Bus (Module Communications Network).
This pinpoint test is intended to diagnose the following:
- Module communication
- Instrument cluster
