Train doors at car 1701 were not provenclosed. TC recycled train doors once - ok. Staff(YWT) checke d and confirmed car 1701 "B4"Fault did not recur at subseq uent stations. SM (BGB) isolated car 1701 "B4" door in close ~~~~~ Train doors at car 1701 were not prove nclosed. TC recycled train doors once - ok. Staff(YWT) checked and confirmed car 1701 "B4"  Fault did not recur at subsequent stations.SM (BGB) isolated car 1701 "B4" door in closed position CE: T421-1701 B4 Saloon Door  Isolated and Faulty Door Sticker Pasted .  FC993 B4 door cle occured twice, FC996 B4 door DOM once. Door gap 14cm Open/close speed passed. No FOD found, door cycle 20x ok, found rubbing mark on LHS of carbody caused by weather strip, re-adjusted ok. Door push/pull ok. Door mating gap 63.6mm, DLS red line present. DLS cushion intact. DCS distance 14.6mm. Door no wobble. Preventively cleaned J-rail and gudie rail. scoped rollers ok. Static timing ok. Done by: Johari, Daniel 9.7.24