2000 Oldsmobile Alero injectors not working

Electrical problem
2000 Oldsmobile Alero 4 cyl Front Wheel Drive Automatic

replaced my ignition now car will not start ignition good checked fuel pump spark plugs coil belt hoses every thing working correctly double checked still good I did not remove battery when replacing ignition I think that this is causing the injectors to not open up and spit fuel out question is how do I fix this problem do I need to turn the key on and off for a set code remove a fuse or battery or something else I know everything else is in working order this is the only thing left to try to fix
please help me