Maytag mdb7979shz filling but not washing

Maytag mdb7979shz filling but not washing

My dishwasher is less than 2 years old. It fills with water, heats up and drains but the spray arms are not working. We cleaned everything, no clogs. We checked the inlet valve, the sump, and circulation motor and all test good. We replaced the capacitor still having the same problem. It’s running through a full cycle but just not washing. Any ideas????