TC reported brake fault at Front M2 carmomentarily when train comes to a stop after braking since B BT SB intermittently. Fault self cleared. TC feedback train performance still ok. ~~~~~ TC reported brake fault at Front M2 car Replaced #2456 ACU and static test ok. Old s/n: 1310-143 New s/n: 1301-124 Done by Sufian/Rosli.  12/05/23