Train doors were not proven closed at rear DT car B2 door. TC opened and closed train doors once to clear fault. Staff(TAP) checked for 2 stations and there wer e no abnormalities. Train doors were not proven closed at re ~~~~~ Train doors were not proven closed at re        FC-933 on B2 door happen once.Further check no observe of FOD on guide rail.Push/pull 7.8kg-8kg,after clean 5 to 5.2kg mating strip 63-63.5mm,DSS-14.3mm,DLS-red line observe.Door function and static test ok. Doon by Sufian/Jack 18/02/23