Communication with the BCS control unit
â–¶ How to fix
Check the yellow CAN bus wiring and connectors. Check the circuit for the BCS control unit power supply (30) and the circuit for the BCS control unit's activation signal (15). You can see whether the BCS control unit has generated any fault codes via the instrument cluster.
What you'll see
No driver-visible symptom recorded.
System reaction
No system-reaction text recorded.
Diagnostic depth
Detection
Communication between the coordinator and the BCS control unit has been interrupted.
Possible cause
The fault may be due to: Open circuit in the yellow CAN bus.Short circuit or open circuit in the BCS control unit power supply.Internal fault in the BCS control unit