Dishwasher stops at drain cycle (won't drain). Built-in diagnostic indicates turbidity sensor fault. This sensor apparently is no longer available. However LIGHT CYCLE does not use this sensor according to the logic chart, so why does drain not work on its own? Ohmeter check of the 4 motor connections indicates continuity and no short to ground.
When DRAIN/OFF pushed, voltage check of 4-wire connector to motor shows momentary power between two outside (blue and yellow) leads, and motor buzzes lightly during this time, about 2 seconds, but there is no power on DRAIN (red) lead.
Is control logic at fault, or does turbidity sensor affect this, or??
thanks for any help