i would suggest you do a track signal test if you have a working engine. if not see if you have track voltage and also make sure you have dcs turned on and also see if tiu is blinking 1 time on power up a red led inside should flash 1 time on power if your set for tiu 1 on your layout ! are you running dcs conventional or ps 1 engine what is you engine item number 20 - 30 - etc !
Alan