I replaced the alternator, still no charge condition... on 1992 Jeep Wrangler

checked wiring, checked fuses in the fuse relay center. code 41..does this mean the computers bad? is there any other fuses or switches ??voltage from the coil side of the alt but none from the tan/black wire from pin 20 on the computer

Asked by for the 1992 Jeep Wrangler