Normal Operation and Fault Conditions
With the ignition ON, the ABS module sends messages to the SECM over the HS-CAN 2 and through the SASM. If the SECM does not receive these messages within a certain time frame, the SECM sets a DTC. For information on the messages sent to the SECM by the ABS module, refer to the Network Message Chart in the Description and Operation in Power Steering System .
SECM DTC FAULT TRIGGER CONDITIONS
| DTC | Description | Fault Trigger Conditions |
|---|---|---|
| U0121:00 | Lost Communication With Anti-Lock Brake System (ABS) Control Module: No Sub Type Information | Sets when the SECM detects any of the ABS module messages is missing. This can be due to a ABS module failure, a circuit failure on the HS-CAN or an excessive load on the network. |