Car 1545 & 2545 having BCU Fault. To rep ~~~~~ 1545 & 2545 having BCU Fault. To replace ACU. (Train prep)  1545 & 2545 ACU replaced - Done. Function check - OK. ACU S/N :      OLD             NEW 1545  :      1311/149        1037/057 2545  :      1302/133        1012/012  Chan SW/Hanafi 43977