Train door failed to close at Rear M1 car at B4 door. Recycled a few time to no avail. Pax subsequen tly disembarked at JUR MT. Operated DIRBS, train routed to B SD for scheduled withdrawal. ~~~~~ Train door failed to close at Rear M1 ca     Check fault reporting & Tims door fault was #1626-B4 saloon door.From Tims observed FC 993(Saloon door B4 close operation Timeout:CLE)on car #1626.Check guide & J rails did not observed any signs of FOD.Check door mating strip gap ok.DCS & DLS rigging within criteria.DLD cushion contact.Push/pull test approx.8kg withi criteria.Check rollers observed some rocking on the RHS door leaf.Replaced rollers ok.Door operation was smooth,push pull 6kg.Performed door cyclic test ok.Door static test all doors timing within criteria. Done by Rizman/Kalees/Henry   05/05/22