Is this dishwasher motor bad?
Pulling up logic which should be stored in my old noggin, from dishwasher trouble-shooting education; The motor can be checked off of the unit, but it's not really a DIY situation. Calling on my memory again: most dishwasher motors run both ways, like a lot of clothes washer motors. One direction will run the pump for the dishwashing cycle, the other direction will run the pump to discharge the water from the unit, so you have a motor that runs in both CW and CCW directions. The wiring on the motor has to be figured out as to which is ground, which is neutral, which one is CW, and which one is CCW, before testing. Did the motor come off the unit with the pump attached? Can you turn the motor/pump assembly by hand to check for pump blockage? If this seems to be in working order, the check the discharge hose, eliminate all possibilities before replacing the motor. Now I have to ask: does the dishwasher/unit fill with water-as it should? Does the unit sound as if it is performing normally during a washing cycle? Have you interrupted the cycle during the wash cycle to see if anything has been going on? The unit should go through one wash cycle and then one drain cycle before doing the rinse cycle. Immediately after the wash, the rinse cycle is when I would check to see if there is any water left in the bottom of the unit. IF you have checked everything you can check at this point, except the motor, then it's either time to check the motor or get a replacement. The two places around here I do business with will check the motors for me, at reasonable cost, before selling me a new motor. Bum time to have a dishwasher go out. Merry Christmas, David