OBD scanner not picking up anything - European 1996 GS

Hi everyone, I just got my first car, a beautiful 1996 eclipse, european spec. I connected both one of those crappy blue bluetooth ODB readers, and a slightly less crappy one, and they both fail to make contact with the ECU. The port does have power, (I can connect to bluetooth, after all), but I can't make a connection to read any codes. Does anyone have any experience with this, or tips? I need to figure out why my ABS isn't working!