Pinpoint Test D: Lost Communication With Abs Module Concern
Normal Operation and Fault Conditions
With the ignition ON, the ABS module sends messages to the SECM over the HS-CAN2 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 the Power Steering article.
DTC Fault Trigger Conditions
| DTC | Description | Fault Trigger Condition |
|---|---|---|
| SECM U0121:00 | Lost Communication With Anti-Lock Brake System (ABS) Control Module 'A': No Sub Type Information | Sets when the SECM detects any of the ABS module messages are missing. This can be due to a ABS module failure, a circuit failure on the HS-CAN or an excessive load on the network. |
| SECM U0415:00 | Invalid Data Received from Anti-Lock Brake System (ABS) Control Module 'A': No Sub Type Information | This DTC sets if the SECM receives invalid data in any of the ABS module steering wheel, yaw rate, or vehicle speed messages. |
| SECM U0415:81 | Invalid Data Received from Anti-Lock Brake System (ABS) Control Module 'A': Invalid Serial Data Received | This DTC sets if the SECM receives invalid data in the ABS module external angle request validity message. |
| SECM U0415:82 | Invalid Data Received from Anti-Lock Brake System (ABS) Control Module 'A': Alive/Sequence Counter Incorrect/Not Updated | This DTC sets if the SECM receives invalid data in the ABS module external angle request message counter message. |
| SECM U0415:83 | Invalid Data Received from Anti-Lock Brake System (ABS) Control Module 'A': Value Of Signal Protection Calculation Incorrect | This DTC sets if the SECM receives invalid data in the ABS module external angle request checksum message. |
Possible Sources
- Network communication concern
- Charging system concern
- SASM
- ABS module
- SECM