DIAGNOSIS
1. Using scan tool (M.U.T.-IIISE), diagnose the CAN bus line.
2. Using scan tool (M.U.T.-IIISE), read the other system DTC (Check if DTC B222C is set in the ETACS-ECU).
3. Using scan tool (M.U.T.-IIISE), read the BSW-ECU (master) DTC again.