Normal Operation and Fault Conditions

With the ignition ON, the CCM sends 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. For information on the messages sent to the ABS module by the CCM, refer to the Network Message Chart in Description and Operation of in the Anti-Lock Brake System (ABS) and Stability Control article .

PPT R ABS MODULE DTC FAULT TRIGGER CONDITIONS

DTC	Description	Fault Trigger Conditions
U0104:00	Lost Communication With Cruise Control Module: No Sub Type Information	Sets when the ABS module detects any of the CCM messages are missing. This can be due to a CCM failure, a circuit failure on the HS-CAN or an excessive load on the network.
U0405:41	Invalid Data Received From Cruise Control Module: General Checksum Failure	Sets in continuous memory if the information in one or more of the messages sent by the CCM contains invalid or out of range data.
U0405:82	Invalid Data Received From Cruise Control Module: Alive/Sequence Counter Incorrect/Not Updated	This DTC sets if an invalid checksum value is received in the adaptive cruise control message.
U2107:00	Collision Mitigation By Braking: No Sub Type Information	This DTC sets when the collision deceleration message from the CCM is sent too often or the duration of the message is too long. This is most likely caused by a network communication concern or an internal failure of the CCM.