A side Train doors at rear m2 carwerenot proven closed. TC recycled train doors once - ok. Staff( BBT) checked and confirmed no train doors abnormalities. Fau lt did not recur at subsequent stations. A side Train doors ~~~~~ 2608 A side Train doors were not proven closed. TC recycled train doors once - ok. Staff(BBT) confirmed no train doors abnormalities. Fault did not recur at subsequent stations. CE:2608 all doors proven open and closed No abnormality  2608 FC 083 (door A4 close operation timeout). Weather strip & door rollers checked SATIS. No FOD on door guide. Found Door Lock Switch punger out of criteria, red line visible 100%. Re-adjust plunger till redline flashed. Door gap & closing Switches measured SATIS. Function test door operations ok. Aliff/Daniel/Redzwan/Chan SW 45432