Rear defoger not working

[kjphilippona]

My rear window defoger was not working, found the fuse blown but did not have to use it until the other day and still does not work. Any ideas as to what could be wrong :disappoin

[psdenno]

Have you checked to see if you're getting power at the glass grid connections? How is the condition of the glass grid - any breaks?

Dennis

[kjphilippona]

No have not checked for power, there appears to be no breaks in the grid.

[EScanlon]

No have not checked for power, there appears to be no breaks in the grid.

Appearances can be deceiving.

A simple continuity check between the two terminals will tell you if you have at least ONE of the lines working. No continuity and you either do NOT have ANY unbroken lines OR your spade contact is no longer attached to the grid.

First check for 12v at the wiring to the defroster with the switch on AND the ignition switch in the RUN position (to ensure the relay has powered the grid up). If you don't have 12v, then your problem may be in the fuse, wiring or switch. Do a continuity test just for S&G but I'd look at the wiring before proceeding further.

FWIW

E