Intermittent brake fault at rear M2 car.Fault self cleared after KRJ SB. ~~~~~ 3616 Intermittent brake fault at rear M2(2615) car. Fault self cleared after KRJ SB.  FC-312-BCU release fault happen once, brake function ok. brake frame no abnormal, swap ACU to 1615 monitor, FC 309-BCU brake demand PWM fault(#2615) Replaced BCU on 2615 done, Security check, limited movement and brake static test ok. To be further monitor on mainline service. ACU Swap 2615>1615 s/n:1447-056 1615>2615 s/n:1504-032 BCU New:15-03-112 old:15-09-158    notif csc:2519321 Done by Sanip/Rizman/Saini/Asruddin 29.08.23