hyundai ecu

does anyone know where i can get a schematic for the ecu in my 91 hyundai excel? i need it to trace down a short on the board, it keeps blow up circuit traces like they were fuses.

At Hyundai Webtech (http://www.hmaservice.com/webtech/default.asp?recent=7&source=home). Click on your model (Excel) the year (1991) and the engine type. Then click on the ETM tab on top and viola.

TS out

as far as i can tell that site only shows me up to the pin out of the ecu, and everything that get attached to it, that stuff i already know. I need the circuit board schematic for the ecu. Maybe i'm not finding it on that site....