TC feedback DIR indicator illuminated momentarily in-between BSH SB TO BDL SB. Staff(ORC) checked an d confirmed all train doors were working normally. Fault rec urred between MRB SB to MSP SB ~~~~~ 3510 TC feedback DIR indicator illuminated momentarily in-between BSH SB TO BDL SB. Staff(ORC) checked and confirmed all train doors were working normally. Fault recurred between MRB SB to MSP SB. CE:N . OE depot check.  3510 B/S cab door sensing s/w plunger found out of criteria. Re-adjusted to criteria & function check cab door - OK. Checked all doors proven closed & DIR not lighted up.  Sarma 44605