TIMS showed rear DT B3 door operation time out. Staff(CTH) checked and confirmed rear DT car B3 doorclosed normal. TIMS showed rear DT B3 door operation time o ut. Staff(CTH) checked and confirmed rear DT car B3 door clo ~~~~~ 3644 TIMS showed B3 door operation time out. Staff(CTH) confirmed 3644 B3 door closed normal. CE : T423(3643) RDT car 3644(B3 door) check n found no sign of time-out. Door(B3) further check/monitored door ops found ok. Door open/ Closed normal.  3644 B3 door performed the following check :    FC: 972 (Saloon Door B3 open operation) FOD found: N Weather strip condition ok: Y Checked roller condition ok: N, RHS outer roller delam 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 #3644 B3 door replaced both LHS and RHS door rollers, Function check door open/close operation - OK.  Sarma/Au TK/Lee PT 45395