Train EB was applied while departing station in Auto mode. TC reported DIR illuminated intermittentl y with no DMI indication.eded in ATPM mode to next station. ~~~~~ Train EB was applied while departing sta     Check and found #3518-A/S cab door sensing s/w having more then 4mm gap in between cab door sensing s/w plunger.Manual pull when cab door in closing position observed DIR intermittent illuminated and no DMI indication.Check cab door latching over laping was ok.Proceed to adjust cab door sensing s/w plunger and function test ok.Sensing s/w check contact continuity ok and output voltage ok. Done by Koh. 18/07/22