TC reported TIMS showed BCU Fault at Front M1 bogie 1 and 2. Fault was intermittent. ~~~~~ TC reported TIMS showed BCU Fault at Fro   Replaced ACU on #1555 and brake static test done ok. ACU=New s/n: 1037-049  Old s/n: 1024-030 Done by Low K.H./Deeshan/Deepan. 06/09/20