fuse blows, passenger mirror
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Forum Name: General Discussion
Forum Discription: General Mobile Electronics Questions and Answers
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=127986
Printed Date: May 10, 2024 at 4:52 AM
Topic: fuse blows, passenger mirror
Posted By: jbob1412
Subject: fuse blows, passenger mirror
Date Posted: July 20, 2011 at 1:30 PM
I have a 2004 Kia Sedona. When I try to adjust the passenger side mirror it blows the fuse. I've noticed when I adjust the driver side mirror down or left the passenger side mirror tries to move as well. However, this doesn't blow the fuse. When the fuse blows the cigerate lighter doesn't work. I'm thinking that I might have a short, but I was wondering if someone had some good suggestions before I try to get started loking for it. I'm deffinetly not a mechanic so I just have to go on what info I can find and my common sense (which is limited). ------------- J-BOB
Replies:
Posted By: i am an idiot
Date Posted: July 20, 2011 at 8:05 PM
Did you recently install speakers in the door?
Posted By: KPierson
Date Posted: July 21, 2011 at 9:20 AM
Power mirrors typically "share" a wire. That means that there is one wire common between both mirrors.
It sounds like one of the non-common wires is grounded - therefore when you apply 12vdc to the shared wire the other mirror moves, but when you apply voltage to the passenger mirror the fuse blows.
Did you recently install speakers in the passenger door or do any other work over there?
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Kevin Pierson
Posted By: Mike M2
Date Posted: July 22, 2011 at 6:53 AM
I think your best first move would be to unplug the mirror in the door panel. If it still blows it will eliminate the mirror itself from being the issue(which it most likely is).
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Mike M2
Tech Manager
CS Dealer Services
Posted By: i am an idiot
Date Posted: July 22, 2011 at 9:40 PM
The fact that the passenger mirror moves when doing some adjusting of the driver mirror leads me to believe the problem is going to be switch related. But for troubleshooting, as mentioned earlier, try disconnecting the passenger mirror and go from there.
Posted By: howie ll
Date Posted: July 24, 2011 at 1:54 AM
Disconnect the mirror or try to look inside the door tube (both sides) for a broken wire or two with insulation mangled.
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Amateurs assume, don't test and have problems; pros test first. I am not a free install service.
Read the installation manual, do a search here or online for your vehicle wiring before posting.
Posted By: booztedz31
Date Posted: July 24, 2011 at 2:09 AM
What you have is 100% definitely a short-to-ground.. Whats happening is that the power wire in your passenger side mirror circuit is "grounding out" before it reaches the circuit's load (the power mirror motor). The load in any electronic circuit, whether it be a light bulb, a power window motor, or whatever, serves as the circuit's RESISTANCE. So basically, the mirror circuit is bypassing the load and going straight to ground without any resistance, and according to ohm's law when resistance goes down current goes up, and the excessive current is blowing your fuse every time you attempt to activate it.
A chronically blown fuse is the telltale sign of this, and that fuse most likely controls several circuits (including your cig lighter) as most do.
The cause of this is almost always from a wire rubbing against something metal and wearing through the insulation.
Get ahold of a wiring diagram for your car and start checking for chafed or pinched wires somewhere between the circuit's fuse and the power mirror motor. Good luck.
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[BooZted Z31]
*1988 NISSAN 300ZX (CT26 turbo, CXracing intercooler, 3" exhaust, k&N, Z32 twin-turbo fuel pump, Prothane bushings, Dunlop SPsport 8000, rebuilt/polished head w/4 angle valve job, etc
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