Train doors at car rear M2 were not proven closed. TC recycled train doors once - ok. Fault did not recur at subsequent stations. ~~~~~ Train doors at car rear M2 were not prov     #2612-A1 door FC 023 1 time.Check mating 63 DCS to plate 16.7 adjusted to 14.7mm.DLS red mark not visiable. Door locking device rubber dislodge.Push/pull-6kg,replace DLD adjusted DLS-red mark 1/2 visiable.Clean guide rail,J-rail,check no FOD.Function test DLD,DLS,DCS-ok.Door cyclic ok.Door timing open/close ok. Door locking Device- Old s/n: C151BDL14Y088 New s/n: C151BDL45078 Not: 2325717 Done by Zulq/Asruddin. 24/10/21