Conflict between motion sensor signal and independent motion signal
* Check for DTCs in systems(ABS/EBS) distributing the independent motion signal (EBC2:FrontAxelSpeed). * Check CAN communication/gateway in COO.
What you'll see
No driver-visible symptom recorded.
System reaction
MC80/EV305: * Warning message with error text: "motion conflict" together with Memory Code 80 is displayed in the tachograph display. * The warning message will be displayed repetitively every hour until the cause is withdrawn. * Event stored in the tachograph memory * Event stored and in the inserted tachograph card. * System event in TCO1 CAN message is set to active. * Tachograph warning (amber T) is displayed in the instrument cluster.
Diagnostic depth
Contradiction in the evaluation of the vehicle movement between motion sensor and signal and the independent motion signal (EBC2:FrontAxelSpeed from the ABS/EBS system).
* IMS function is missing or IMS configuration is incorrectly programmed. * Possible operation error during transport on a ferry/train. * Defective motion sensor.