Is the motor or the control board broken on my Maytag Dishwasher?

I recently replaced the latch handle and the upper portion of the door (with the button pad) on my dishwasher because both were cracked. When I got it back together again, I found that the motor will not start - it just hums for a few seconds, apparently until the overload circuit cuts it out. The motor will not run forward or reverse. I went through the Automatic Function Test routine and found that it fails with a "Motor High Current" error message. Using the Manual Function Test routine, I find that all the other functions work OK (e.g. water valve, vent, etc.) I checked the continuity of the wiring from the circuit board to the motor (4 wires) and took apart the sprayer from inside the tub until I got to the motor shaft and found that it rotates freely. When I push the Drain/Off button, I measure 120V from the yellow wire to each of the other three wires on the motor on the circuit board (red, gray, and blue).

So...is the problem the motor or is it the circuit board? I might suspect the circuit board since I had to remove it to replace the top portion of the door and maybe I broke something there (although it looks OK and none of the transistor or other wires look broken. But it does seem to work all the other functions. So maybe the motor just decided to fail at the most confusing time for me to troubleshoot it. Could I be missing something else? Is there a start capacitor for this motor that may have shorted?

I'd like to be able to test the motor independently of the circuit board. Is there a way I can power the motor (model # S62NXKDM) through the circuit board connector with an external 120v source? If so, how do I wire it for the test?

Thanks