Our dishes were not getting clean and I realized that intermittently the dishwasher would not fill. I checked the float and that seems to work Ok. After reading another string here on this sight I checked the voltage between the brown and brown and white wires going to the fill valve and only get 49 vac. According to the other string I read I should get 120vac and that this points towards a control board problem. Before I buy a control board I would like to verify that the fill valve is not the problem. I applied regular household current across the electrical leads for the valve but got no sign of actuation. What would you recommend?

Checked the voltage across the leads to the fill valve and consistently get 50vac. Checked resistance across leads for float switch and get zero. I'm afraid both the control board and fill valve are bad. Any way to test fill valve? Seems like putting household current across leads should make it open.

The resistance a across the fill valve is 966ohms and is the same across the wires at the control board. Would you agree that I probably need both a contol board and a fill valve?

Thanks. I'll you know how things work out.

The valve may have been affecting the voltage though that does not explain why it measured low when/if you checked it with the valve disconnected.
Could be both parts were shot.

FYI: It may have been ghost voltage. The units voltage is AC so it is rising and falling in a sine wave pattern. It can induce a voltage in a near by wire, that is basically how a transformer works. You see voltage but there is really no amperage there as the wires are loose coupled.

In any case I am glad to hear you are up and running.

And thanks for getting back to us. Now when others search for a similar problem they will see what actually worked instead of just suggestions about what could be the cause.