TIMS showed intermittent BCU fault at car 2631. Train performance - ok. ~~~~~ ER download, preform brake pressure B1,2,3,EM and coast check uncler criteria. Swasp ACU #2631 to #2632 function check #2632 uncler criteria/ C/O new ACU at #2632 function check ok. Security check ok.  Ganesan / Teh 12.09.2023 ACU C/O S/N: OLD: 1528/126 NEW: 1442/034 Notif: 2523067