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1999 Ford Crown Victoria Rear Window Defroster

Tiny
TOMCS
  • MEMBER
  • 1999 FORD CROWN VICTORIA
  • 127,000 MILES
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.
Friday, August 23rd, 2013 AT 2:02 PM

7 Replies

Tiny
MHPAUTOS
  • MECHANIC
  • 31,937 POSTS
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.
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Friday, August 23rd, 2013 AT 6:11 PM
Tiny
TOMCS
  • MEMBER
  • 7 POSTS
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?
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Saturday, August 24th, 2013 AT 8:33 AM
Tiny
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  • MECHANIC
  • 31,937 POSTS
Check the wiring schematic and work through the circuit.
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Sunday, August 25th, 2013 AT 1:40 AM
Tiny
TOMCS
  • MEMBER
  • 7 POSTS
Thank you
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Sunday, August 25th, 2013 AT 12:15 PM
Tiny
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  • MECHANIC
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Your welcome, thank you for using 2cp
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Monday, August 26th, 2013 AT 4:35 AM
Tiny
TOMCS
  • MEMBER
  • 7 POSTS
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.
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Monday, August 26th, 2013 AT 3:02 PM
Tiny
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  • MECHANIC
  • 31,937 POSTS
That's great, thanks' for using 2cp
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Tuesday, August 27th, 2013 AT 2:32 AM

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