Johnson-Koulianos was granted a deferred judgment Monday. He received a year's probation and was fined $315.
Johnson-Koulianos had also been charged with unlawful possession of cocaine and prescription drugs. If Johnson-Koulianos successfully completes his probation the charge will be expunged from his record.
Coach Kirk Ferentz suspended Johnson-Koulianos after his arrest last month. Johnson-Koulianos finished his career as Iowa's all-time leading receiver.