Mitsubishi Repair Problems? Ask a Mechanic for Answers ASAP
Hello and welcome to just answer. My name is ***** ***** here to help. I value your input to my questions so I may help you. Are you good at checking automotive electrical systems?
Ok does this happen every time you step on the brake pedal, or intermittent?
What I would suggest first is to remove all brake lights and try that as brake light bulbs have two filaments and I have seen them short out. Also they should be replaced any way at that age .
Just checking with an ohm meter is only checking for resistance not a short, what you need is a short detector. you put the circiut breaker in place of the fuse that blows and walk the meter along the suspected wiring area, as you get closer to the short the needle on the meter vibrates faster and when you pass the short it stops. What you could do is disconnect the tail lights one side at a time to isolate that area and see if that's it if either one doesn't blow the fuse it has to me in the wiring up to the fuse.I ;ll give you a pic of one of those short finders, saved my bacon many times fast and easy to use. For that price is an invaluable tool. the one on the link is the better one as it does more then one job.Remember a good tech finds the problems not just replacing parts. I can't recommend this tool enough because it will save time and money not only on this job but any similar ones . If your handy using and ohm meter this is a piece of cake. https://www.aliexpress.com/store/product/Universal-Automotive-Short-Open-circuit-Finder-checker-Auto-Circuits-wire-Tracer-Detector-ADD330N-Car-Repair-diagnostic/620726_1800945660.html
You don't need to physically see the short with that tool all you do is pass it over the arear of the wiring from power source to what it's supposed to run amd it will find it for you as soon as you pass it the meter stops vibrating and you just back it up to where it starts again and that's where the short is.With your ohm meter you would have to pull out the whole wiring to look for it.
Behind the center of the dash is a flasher unit that the power branches off from the brake light switch. One branch continues to the 3rd brake light that works, and the two "combination" lights are powered off the second branch that goes through the flasher unit. Based on this I would be most suspicious of the flasher unit, but you can test for power to prove it or try the flasher. Question? did you try as I mentioned about disconnecting the tail light connectors one at a time to see if that stops the fuse from blowing, also don't forget the high mount brake light as well.
Yes same circuit till the branch off so it is possible the third brake light can cause the short.
have you solved the problem or need more help?
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Let me help some more. Is there anything else I can help you with?
Yes this is a common problem. This also happens in the doors. I am glad you were able to correct the problem. Sorry I could not help you sooner with this.