I have a Kenmore 665.17742k010 dishwasher that won't drain. I believe it is similar to the whirlpool point voyager models. I couldn't find a clog which i initially thought would be the problem. When test running it I noticed that the main wash motor doesn't run during the start of the drain cycle as it is supposed to. This isn't a reversing wash pump so I am a little unclear why it runs during part of the drain cycle, but I remember hearing it run when it was working properly and the esterline chart on the tech sheet shows it activated at the beginning of the drain cycle. It runs fine during the wash cycle but I measure 6 or 7 vac during the drain cycle.
The drain pump seems to be functioning correctly. The drain pump motor runs and the impeller is not stuck or damaged but it still only will drain a few drops.
At this point I am suspecting the control board but wanted to get an expert opinion before I buy an expensive part. Is there an input to the control board that is malfunctioning and causing the problem? I appreciate any advice you have. Thanks!