TIMS showed BCU fault at RM2 car. Thereafter train came to gradual stop in between station.TC oper ated STBS for train to depart.Pax were detrained at WDL1, thereafter, train was routed to WDL siding. ~~~~~ TIMS showed BCU fault at RM2 car. Therea     Check the above mention.FC-328,329,330,331,307,303 & 301.Replaced BCU & ACU ,,due to hunting and air leak at exhaust RF when in emergency.Brake static check ok.Security check and limited movement several time ok. ACU: New s/n: 1503067 Old s/n: 1434019 Not: 2364741 BCU: New s/n: 1521192 Old s/n: 1521191 Not: 2364743 Done by Saini/Asruddin.  14/03/22