dishwasher

I have a Kitchen Aid KUDS02SRSS1 that has a blinking normal"button ". Is there a wiring diagram available so I can pin out the touch panel to confirm if the panel has a sticking button or whether the control board is the problem. It did have a code 2 on the front panel. It was only a code 2 not 2.1 or 2.2. Thanks for any info. Steve