3629 Train doors were not proven closed. ~~~~~ 3629 Train doors were not proven closed.    TC opened and closed once to clear fault.  3629 ER & fault trace D/L - Done. No FOD found. Door function check open/close 20x on both DT cabs - OK All doors proven closed & no DIR illuminated. Before cleaning J-rail, LHS door 4.8 kgf  RHS 5.0 kgf. After cleaning J-rail,  LHS door 3.4 kgf  RHS door 3.6 kgf.  Sarma/Kana 44045