Answer Hello Bill! Check and replace the lid switch WP8318084, if defective. You can test parts by using a MultiMeter MA-DM1. Here is a link from our free repair forum you can refer to for help with using a multi meter. Hope this helps, thanks! http://forum.appliancepartspros.com/oven-repair-including-ranges-cooktops/4810-how-check-continuity-ohmmeter.html Read More... Answered by AppliancePartsPros.com | Tuesday, January 17, 2012