TC reported TIMS showed rear DT car "BCUWSP timer" momentarily and fault self cleared. No issues wi th train performance. ~~~~~ 3655 TC reported TIMS showed "BCU WSP timer" momentarily and fault self cleared. No issues with train performance.  3655 ER D/L & FC 322/323 was found. No BCU fault was found. OPS 20 raised to follow-up.  Dinie 44213 To follow up rectify. NML3 3655 found FC 322/323. Checked #3655 Tacho ohm reading - OK. Replaced BCU on #3655. #3655 BCU S/N :    OLD : 1541282 NEW : 1541284  Selvan/Lee PT/Alcus 44214