1999 Ford Crown Victoria Rear Window Defroster

1999 FORD CROWN VICTORIA
127,000 MILES
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TOMCS
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My rear window defroster quit working. The light on the switch turns on. There is no voltage going to the grid. I have checked the fuse, relay and window grid. They all checked out. I have replaced the switch and it still does not work.
Aug 23, 2013 at 2:02 PM
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MHPAUTOS
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If you have voltage at the grid and it is earthed, and still not working the grid will be open circuit, check this with a multimeter.
Aug 23, 2013 at 6:11 PM
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TOMCS
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I do not have power at the grid. I checked the grid and it is okay. I also checked the fuse, relay and switch. They checked okay. Is there another component I may have missed? I read about a timer. Could that be the problem? If so, where is it located and how do I test it?
Aug 24, 2013 at 8:33 AM
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MHPAUTOS
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Check the wiring schematic and work through the circuit.
Image (Click to enlarge)
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Aug 25, 2013 at 1:40 AM
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TOMCS
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Thank you
Aug 25, 2013 at 12:15 PM
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MHPAUTOS
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Your welcome, thank you for using 2cp
Aug 26, 2013 at 4:35 AM
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TOMCS
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Your wiring diagram was just the thing. I found a loose wire at the hidden antenna module. Repaired it and all is well.
Thanks again.
Aug 26, 2013 at 3:02 PM
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MHPAUTOS
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That's great, thanks' for using 2cp
Aug 27, 2013 at 2:32 AM