Normal Operation and Fault Conditions

With the ignition ON, the SASM sends adaptive front steering messages to the ABS module over the HS-CAN 2. If the ABS module does not receive these messages within a certain time frame, the ABS module sets a DTC. This can be due to a steering angle sensor failure, a circuit failure on the HS-CAN 2 or an excessive load on the network. For information on the messages sent to the ABS module by the SASM, refer to the Description and Operation in Anti-Lock Brake System (ABS) And Stability Control .

PPT J ABS MODULE DTC FAULT TRIGGER CONDITIONS

DTC		Fault Trigger Conditions
U0126:00	Lost Communication With Steering Angle Sensor Module: No Sub Type Information	This DTC sets in the ABS module if any of the SASM messages are missing. This can be due to a SASM failure, a circuit failure on the HS-CAN or an excessive load on the network.
U0126:87	Lost Communication With Steering Angle Sensor Module: Missing Message	This DTC sets if the steering wheel angle information or steering wheel calibration message from the SASM contains invalid or faulty information.
U0428:82	Invalid Data Received From Steering Angle Sensor Module: Value of Signal Protection Calculation Incorrect	The SASM sends a rolling counter in the adaptive steering messages sent to the ABS module. This DTC sets if the rolling counter value is incorrect.
U0428:83	Invalid Data Received From Steering Angle Sensor Module: Value of Signal Protection Calculation Incorrect	This DTC sets if the calculated and received adaptive steering checksum is incorrect.