Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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 the Anti-Lock Brake System (ABS) and Stability Control article.
| 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 following CCM messages are missing: collision mitigation by braking deceleration, collision mitigation by braking precharge, adaptive cruise control deceleration or adaptive cruise control precharge. |
| U0405:82 | Invalid Data Received From Cruise Control Module: Alive/Sequence Counter Incorrect/Not Updated | This DTC sets if the counter signal value in the adaptive cruise control message does not increase. |
| U0405:83 | Invalid Data Received From Cruise Control Module: Value of Signal Protection Calculation Incorrect | 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. |
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.