TIMS showed BCU fault at car 3701. Trainperformance - ok. TIMS showed BCU fault at car 3701. Train performance - ok. ~~~~~ TIMS showed BCU fault at car 3701. Train    #1701-FC-318/319 and 324,replaced R10 v/v and security check tested ok.And #1701-axle 4 FC 351 replaced speed sensor done.Security check and tested ok. R10 v/v:- New s/n: 16500125 SPC Old s/n: 1648801 SPC Not: 2484767 Speed sensor:- New s/n: Z0031726502 D02 Old s/n: Z0031726495 D02 Not: 2484768 Done by Saini/Asruddin/Haslan. 02/05/23