Up to now you still didn`t tell us which ecm you have exactly. Here:http://www.gearhead-efi.com/Fuel-Inj...ams-Tuner-Info!
you should find your diagramm. DRAC normally has 6 connections: two are coming from the transmission, two are plus and minus, two go to the ecm.
If you connect ecm and plus minus only, then error message should go.
If you want to delete the TCC you need a socket for an eeprom, a 27xx512 and a programmer like the moates one or the xgpro TL866.Or you ask here on the forum if somebody will settings on your memcal.Everything is described here in the first thread.