Ecu Good Or Bad

IS THERE A WAY TO FIND OUT IF THE ECU IS GOOD OR BAD ARE THERE ANY TESTS THAT I CAN DO BEFORE I REPLACE IT FOR NOTHING ?? EVERYTHING GOOD BUT FUEL INJECTORS ARE NOT WORKING ?? 93 S10 PLEASE LET ME KNOW I BEEN WORKING ON THIS BAD BOY FOR OVER 3 MONTHS STILL DIDNT FIGURE IT OUT. THANX CHRIS FOR THE LAST HELP. :banghead:

Get One From A Junkyard. They Aren`t That Expensive There. I Know Of No Test To Check Out The Ecu, Or, M. Unit, Or Module. Follow The Dirsctions In The "fuel Injection" Trouble Shooting Section Of A Good Manual. I ASSUME THIS IS TBI, NOT PORT INJECTION.