The icemakers in these KitchenAid refrigerators are actually built by Whirlpool Corporation (as is the whole refrigerator itself). So the troubleshooting information will be identical. Here are a couple docs that’ll help you fix a problem with these ice makers:

Troubleshooting Flowchart for the Ice Maker Itself:

Click to access 21562311-Troubleshooting-the-Whirlpool-Modular-Icemaker.pdf

Troubleshooting Flowchart for the Optical Controls for the Ice Maker:

Click to access TroubleshootingOpticalIcemakerSystem.pdf

To learn more about your ice maker, or to order parts, click here.