MBS_B Expansion node is not starting
- Check the fuse, connectors, and cable harness. - Check the indicators on the faulty node: - No LED is powered or flashing. (Dead expansion node) - Orange LED triple flashing (Application is not executing): Missing or damaged application software: Update the application software , - Orange LED blinking every second (Application is running): No error - Yellow LED is not active: No CAN traffic; the node has no connection to MBS (Master) : Check the CAN bus, connectors, and cable harness. - Yellow active (Shimmering ): CAN communication is OK. No Error - Yellow steady : ECU detects CAN bus physical problems, trying to recover. : Check the connections or damaged wiring.
What you'll see
Components connected to the B-node will not work as inteded. For the driver it will be most obvious the function light in the door buttons will not be lit when the door is open and that the driver's gate light will not work.
System reaction
Functions dependent on MBS_B are missing or degraded in MBS. An amber warning will be shown in the ICL.
Diagnostic depth
No communication has been received from the MBS_B expansion node since startup.
The fault is most likely in the MBS_B unit or the pink CAN bus • During production: - Faulty installation of the expansion node. - Incorrectly connected expansion node. - Dead expansion node. • Bus is in Service (After production) - Dead expansion unit .