TIMS showed BCU fault at the Rear M1 car. Fault only occurred for 1 station. Fault self cleared. Tra in performance - ok. ~~~~~ TIMS showed BCU fault at the Rear M1 car     #1609 Fault code 314(coast at 0.16) Found ACU leaking at coasting and hunting at EM. Replace ACU ok,brake cyclic test done ok and to be further monitor at M/L.ER download done. ACU-Old s/n: 1539-179  New s/n: 1409-008 Done by Fadzzal/Deeshan/Sanip.  10/02/21