Pax feedback to Staff(WDL) train jerky intermittently from JUR MT to WDL SB.without any fault indication. ~~~~~ 3676 Pax feedback to Staff(WDL) train jerky intermittently from JUR MT to WDL SB.##TC confirm train jerky without any fault indication.  675/676 ER D/L & found multiple counts of wheel slide triggering.    Checked TIMS & found FC 322/323 on #3675. Wheel slide indication blinking when train was stationary. Replaced BCU on #3675 & function check - OK. No fault code or wheel slide indication found during depot shunting. #3675 BCU S/N : OLD : 1544/291 NEW : 1544/2872  Solihin/Farid/Koon PL/Salleh 44120