TC reported TIMS showed BCU suspension pressure fault at Rear M1. Fault self-cleared at CTH NB. Trai n performance - ok. ~~~~~ 1528 TC reported TIMS showed BCU suspension pressure fault. Fault self-cleared at CTH NB. Train performance - ok. CE : 1528 monitored ok, no BCU suspension fault.  1528 Checked/found FC 315(BCU Suspension Pressure fault. ER shows brakes - ok. Check all isolation cocks are normalized. Swap and replaced BCU from #1528 to #2528. AS pressure at with pressure gauge - ok. Swap pressure transmitter from #1528 to #2527. BCU installed and wheel diameter set accordingly. Perform brake cycle - ok. No residual pressure at COAST & brakes able to be released physically. Performed Limited movement/depot shunting - ok. No fault reoccurred. After swap BCU s/n: #1528: 1825084 #2528: 1816144 (New) Faulty: 1809045  Daniel/Aliff/Redzwan 45295