Maytag won't drain

My dishwasher will fill up and wash but it won’t drain and empty out I have removed the clamp and pulled the hose from the drain pipe under the sink and blown air back thru the flexable drain line so I don’t think it’s stopped up. No error messages are on the display. I would like to take a shot a repairing myself just need some direction and suggestions where to start and maybe a diagram would be a big help.