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Fuse for electric windows burns out

Tiny
MARK EMMONS
  • MEMBER
  • 2004 MAZDA MPV
  • 6 CYL
  • 115,000 MILES
The fuse to electric windows keeps burning out. I replaced the master switch, the regulator and motor, but still have problem, especially when it rain or is very moist. Could the moisture/rain cause burnt fuses or do you think it is something else? I took to my mechanic this week. He put computer on, but nothing showed up and explanation was the problem has to happen at same time computer is testing.
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Monday, December 24th, 2018 AT 4:56 PM

1 Reply

Tiny
DANNY L
  • MECHANIC
  • 5,648 POSTS
Hello, I'm Danny.

Yes, moisture can cause electric problems. I would first check all the connections/harnesses related to the windows for corrosion/burnt/poor connections due to moisture/water. Be sure to check and make sure the grounds are good as well. Here is a tutorial showing how to check wiring:

https://www.2carpros.com/articles/how-to-check-wiring

I've also attached below a wiring diagram for your power window circuit. Hope this helps and thanks for using 2CarPros.
Danny-
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Monday, December 24th, 2018 AT 7:01 PM

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