CAN message from the BCS control unit
Check whether there are more fault codes on the red CAN bus which have been registered. If only the affected control unit does not respond, the CAN bus is correct.Check the affected control unit.If the control unit is connected to a different CAN bus than the ELC, this can indicate that this part of the cable harness is faulty.Check also the coordinator's fault codes.Electromagnetic interference can for example come from an incorrectly connected mobile telephone.
What you'll see
No driver-visible symptom recorded.
System reaction
No system-reaction text recorded.
Diagnostic depth
The response time for the CAN message has been too long.
There may be an open circuit or poor contact in the cable harness to the affected control unit. Internal fault in the control unit.The control unit does not have a voltage supply.Electromagnetic interference.