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Door switches

Tiny
BROESCHE
  • MEMBER
  • 2004 FORD F-150
  • 4.6L
  • V8
  • 2WD
  • AUTOMATIC
  • 80,000 MILES
I have an intermittent problem with the door lock switch, window switches (driver side) and mirror control switch. I left my house this morning with all switches working. When I got to my destination, none worked, (The remote switch and the passenger side switch both work, so there is power available). When I got home this afternoon, they were not working. About thirty minutes ago I went out to the truck and the switches were working.
I am wondering if there is a loose ground wire in the circuit feeding those switches.
If you agree, where do you suggest looking? At the fuse box?
Any advice you can give will be much appreciated.

Thank you, Edwin Broesche
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Tuesday, September 20th, 2016 AT 1:50 PM

6 Replies

Tiny
WRENCHTECH
  • MECHANIC
  • 20,757 POSTS
It is more likely that you have a broken wire in the harness at the door jam. You would have to follow a wiring diagram to test what is missing on which wire.
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Tuesday, September 20th, 2016 AT 1:55 PM
Tiny
BROESCHE
  • MEMBER
  • 3 POSTS
Where can I find a wiring diagram?
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Tuesday, September 20th, 2016 AT 4:06 PM
Tiny
WRENCHTECH
  • MECHANIC
  • 20,757 POSTS
http://i1198.photobucket.com/albums/aa448/Wrenchtech/107265468.gif

https://www.2carpros.com/images/external/107265469.gif

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+1
Tuesday, September 20th, 2016 AT 4:11 PM
Tiny
RENEE L
  • ADMIN
  • 1,257 POSTS
Nice posted wiring diagram WRENCHTECH!
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Wednesday, September 21st, 2016 AT 11:44 AM
Tiny
BROESCHE
  • MEMBER
  • 3 POSTS
Thanks for the help. I was able to find a broken wire in the cable harness and spliced it back together. Everything works now.
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Wednesday, September 21st, 2016 AT 5:36 PM
Tiny
WRENCHTECH
  • MECHANIC
  • 20,757 POSTS
Glad to hear we could help.
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Wednesday, September 21st, 2016 AT 5:38 PM

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