After repairing a 'manufacturer's defect' with what I'd call a pretty creative solution (see picture), I'm now perplexed why the ice maker won't cycle on it's own.
I've got the style shown in the second picture on either of these URLs: http://fixitnow.com/...peoicemaker.htm or http://www.repairclinic.com/0080.asp in a Whirlpool refrigerator. Whirlpool was particular unhelpful in trying to find a replacement plastic arm, but I've solved that problem. (Yes, that's a simple coathanger with a rather complicated series of bends to reinforce the oddly designed actuator which easily breaks when any other member of the house puts heavy objects on top of the shut-off arm.)
After operating with the new 'armature' for several weeks, the maker stopped again. I've tried some of the troubleshooting steps and determined that 1.) I can manually jump the 'H' and 'T' ports to cause a cycle and that 2.) I have a 110v reading on the test points 'N', 'M', 'T' and 'V', but no reading on 'H' and 'L'.
The freezer freezes, no problem.
As the gurus you are, I'm sure you'll have some ideas for me to continue troubleshooting. $50 will get me a whole new unit, but no spirituality in knowing I was able to overcome this small difficulty.
Thanks in advance.