TC reported TIMS showed Front M1 BCU fault at Bogie #1 and #2 when train at stationary WDL2 platform . Fault self-cleared when train departing station. Fault recurred at all stations. ~~~~~ TC reported TIMS showed Front M1 BCU fau     Replaced ACU on #1501 & #2501 Function test and cyclic brake test ok. #1501-ACU-New s/n: 1002-004  Old s/n: 1244-109 Not: 2199192 #2501-ACU-New s/n: 1037-053  Old s/n: 1024-030 Not: 2199193 Done by Sufhian/Rizman/Henry. 11/09/20