Freezer works fine. Ice maker will not produce ice. Water runs fine through door. Almost seems the arm that pushes ice out is stuck.

Here are the manuals: https://dl.dropboxusercontent.com/u/8010163/Whirlpool%20%20Icemaker%20Ice%20Dispenser.pdf
https://dl.dropboxusercontent.com/u/8010163/Whirlpool%20%26%20Kitchenaid%20indoor%20Ice%20Make r%20Systems.pdf
https://dl.dropboxusercontent.com/u/8010163/Electrical%20Theory%20and%20Diagnosis%20of%20Major %20Appliances%20Service%20Manual.pdf
You need a good digital multimeter to check out the parts. There are only about seven parts that need to be checked, and it's a very simple device. You have a motor and a heater at the bottom to help harvesting (Which will burn out.) and you have a couple of micro-switches and a harvest thermostat. Also, it will not work if the coils are dirty under the refrigerator because it will not get cold enough. To get really cold the first thing you need to do is to make sure the coils are clean under the unit. To get to these you first unplug the unit and remove the front and rear covers at the bottom. You can then slide out the drain pan to clean it then you can see the coils which you spray off with a water hose's sprayer and some spray cleaner. Do not get water IN fan motor, but clean fan blades well, as dirt on fan blades keep from blowing well. Then vacuum up water with wet-vac. This should improve the cooling 100%. Once it is clean check out the parts in the ice maker. The first things to check are the heater and see if water has been getting into the ice making section. Then check where the arm is attached and see if something is broken. It sometimes is best to unplug the ice maker and take it out so you can work on it. If the heater was bad and it tried to harvest it will ruin the gears in the motor, so you might as well just buy a replacement unit with a new water solenoid. They are cheap and it's easy to just plug in a new unit.