Train doors at car 2669 were not provenclosed. TC recycled train doors once - ok. Fault did not rec ur at subsequent stations. ~~~~~ 2669 Train doors were not proven closed. TC recycled train doors once - ok. Fault did not recur at subsequent stations.  2669 D/L ER, fault date & trace date. Found B4 door close door operation time-out : CLE. Checked DLS rubber, FOD, weather strip & door guide - All OK. Cleaned J-rail as preventive measure. Door resistance check - OK.  Au TK 44700