Train door rear M1 car not proven closed. TC opened and closed train door once to clear fault. Staff(TIB) checked and confirmed no abnormalities. Fault did not recur at the next station. Train door rear M1 car not prove  ~~~~~ 1509 Train door not proven closed. TC opened and closed train door once to clear fault. Staff (TIB) checked and confirmed no abnormalities. Fault did not recur at the next station. CE : 1509 Train doors operations ok. Pls check door operations at depot.  1509 all doors checked for FOD - OK. No door related FC found on TIMS. Further checked/found #1509 B1 door wobbling. OPS 20 raised to replace door roller.  Aminur/Fudail/Raja faiz 45333 1509 - To replace B1 door roller.  1509 performed the following door checks : FOD found: Y, B1 door found 20 cent coin Weather strip condition ok: Y Roller condition ok: N, found B1 LHS inner roller pitted Clean J-rail & guide rail: Y 10/20mm gauge test pass: Y, after rectification Push/pull gauge test pass: Y, after rectification Manifold & actuator leaking: N Door cyclic test 20x, DIR extinguish ok: Y, after rectification TIMS door static timing test pass: Y, after rectification Door magnet valve no residue voltage when closed: Y #1509 removed FOD and replaced B1 door LHS inner roller. Function check door operation - OK.  Chan SW/Daniel 45335