That style of ice maker is the same at the one in this video. (with a few extra trim parts)
Whirlpool Modular Icemaker Repair Help Video
this will show you how to check all of the components of the ice maker. The trick is that yours is mounted sideways for that dispensing system. First look for a 1/4" screw on the under right side of the ice maker that holds the wire connection cover in place. then pull the cover off toward the back of the freezer. next you will need to press a small tab lock on the under side rail of the ice maker mount up to allow the icemaker to slide toward the back of the freezer. after you have it removed you can check the heater, thermostat , motor etc.