Rear DT car 'B1' train doors not provenclosed. TC opened and closed train doors twice to clear faul t. TC feedback that the fault has been occurring since WDL N B. Staff (BGB) checked and feedback no abnormalities with th ~~~~~ 433 3604 Rear DT car (3603)'B1' train doors not proven closed. TC opened    and closed train doors twice to clear fault. TC feedback that the fault has been occurring since WDL NB. Staff (BGB) checked and feedback no abnormalities with the affected door. Train is a scheduled withdrawal to UPD.  3603 B1 door performed the following checks : Fault code: 933 (B1 door close operation timeout) FOD found: N Weather strip condition ok: N, LHS rubbing sound Checked roller condition ok: Y Clean J-rail & guide rail: Y Push/pull door smooth & no wobble:  Y, after rectification Door cyclic test 20x, DIR extinguish ok: Y, after rectification TIMS door static timing test pass:  Y, after rectification Door lock switch red line flush with surface for positive latching: Y Door close switch actuating plate distance ok: Y Door gap (criteria 63mm+1.5mm): 63.9mm #3603 B1 door Trim LHS rubber weather strip. Function test & doors able to open and close smoothly.  Sarma/Alan 45289