Train encountered brake fault at car 1506 while arriving station. Fault self-cleared when departing station. Train performance - ok. Train encountered brake fau lt at car 1506 while arriving station. Fault self-cleared wh ~~~~~ Train encountered brake fault at car 150 #1506 fault code 308/330/331 happen once.Conduct brake cyclic test and check ACU no abnormalities.Swap #1506/#2506-ACU. Brake cyclic #2506 ok,#1506 ACU RF hunting at EM-replace ACU at #1506-tested ok.BCP within criteria.Fault clear during brake cyclic test. Not: 2479280 raise. Done by Haslan/Zulq.  12/04/23