Have Ford Questions? Ask a Mechanic for Answers ASAP
Hello and thank you for you question,There are two fuse you need to check first to make sure they are not blown, check the F 43 fuse located in the interior fuse panel and the other is the F 32 fuse located in the under hood panel. If both fuse check okay then you are going to need to do some testing starting at the connector for the grid. I have enclosed the pinpoint test as well as the wiring diagram in the links below, copy and paste the links to your browser to open and view them.https://dl.dropboxusercontent.com/u/104923897/Pinpoint%20test%20H%20Oct%2021.pdfhttps://dl.dropboxusercontent.com/u/104923897/Defrost%20wiring%20Oct%2021.pdfPost back if you have more questions and or need more help and we can work from there.