TIMS showed intermittent BCU fault at front M1 car 1629. Train performance - ok. ~~~~~ TIMS showed intermittent BCU fault at fr     Replaced BCU on #1629 cyclic test ok.Fault occure during shunting.To follow up. Done by Sanip/Fauzi/Hakim.  04/01/20 0020 raise to follow up. Fault Reoccur     #1629 Check and found ACU faulty while cut off 750v.Replaced ACU and function brake cycle test ok. Done by Koh/Gopal. 04/01/20 ACU-Old s/n: 1447-052  New s/n: 1447-055 Not: 2117057 raise to RSW.