Open the latch on the KitchenAid door to open the appliance, which stops automatically if a cycle is in progress.
Lower the door and slide the bottom rack out of the KitchenAid to locate the coarse filter screen inside the bottom in the front right corner.
Grab the tab sticking upward on the coarse screen and twist to the left to release it from the appliance.
Lift the filter cup out of the space below the coarse screen and remove it from the appliance.
Wash the coarse screen and filter in the sink with running water. Use an old toothbrush to scrub away stubborn particles stuck to the parts.
Push the clean filter cup down into the Kitchenaid and press the coarse filter screen on top of it. Twist the screen to the right while pressing downward to snap it in place.
Raise the door and press against the dishwasher cabinet to latch the door in the closed position.