I ran the dishwasher on Normal Cycle, Air Dry, High Temp Wash like I normally do. After a couple of hours, I came back to check on it, manually shake the water off everything, and prop the door open. The green Clean LED was lit, but when I opened the door, the basin was still full of somewhat mucky water. I tried pressing the control buttons to get the water to drain and nothing would come on although the LED for each key would light. I checked the Thermal Fuse and it was okay (had continuity) and the door switches (they also had continuity when the latch was moved to the proper position). I can hear relays making inside the door when I press the control buttons so I’m skeptical that replacing the electronic control module will help. Any ideas as to what could be wrong?
Here are your parts
http://www.appliancepartspros.com/partsearch/modelsearch.aspx?model=DU940QWDB3
See the attachment for the tech sheet.
You could check the motor windings for continuity/resistance.
Also check them to ground.
Check that the wiring from the board to the motor has continuity.
If all OK then I would say that the board is shot which is fairly expensive and may not be worth replacing unless the unit is in very good shape.