Blows fuse when put in reverse
#1
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Blows fuse when put in reverse
When I put my car in reverse it blows the fuse for the back up lights and turn signals. I am assuming it is a short somewhere in the wires, but before I go chasing all the wires and ripping the interior apart I was wondering if anyone has experienced anything similar and if so where the short was in that instance.
Thank you
Thank you
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Chasing wires is what has to be done....sucks dont it?
I just had a 05 Uplander come in a couple weeks ago with the ABS/TCS lamps on. The EBCM wasnt ommunicating with the PCM, so I checked the modules powers and grounds, found that one of the power wires didnt have voltage. Traced it back to the fuse and it was blown. I replaced the fuse and it seemed to be fixed....got in the car to back it out and as soon as I hit the brakes the fuse blew again and the ABS/TCS lights came back on.
I ended up ripping into the wire loom (approx 4 ft of it...SUCKED!) and found a chaffed wire amongst dozens of others...this was causing the fuse to blow. The wire didnt appear to be rubbing on anything else, not even other wires, but it was at a sharp bend.
Sorry about ranting on but the moral of the story is, check the wiring at the most possible places where it can short, such as sharp bends, etc.
I just had a 05 Uplander come in a couple weeks ago with the ABS/TCS lamps on. The EBCM wasnt ommunicating with the PCM, so I checked the modules powers and grounds, found that one of the power wires didnt have voltage. Traced it back to the fuse and it was blown. I replaced the fuse and it seemed to be fixed....got in the car to back it out and as soon as I hit the brakes the fuse blew again and the ABS/TCS lights came back on.
I ended up ripping into the wire loom (approx 4 ft of it...SUCKED!) and found a chaffed wire amongst dozens of others...this was causing the fuse to blow. The wire didnt appear to be rubbing on anything else, not even other wires, but it was at a sharp bend.
Sorry about ranting on but the moral of the story is, check the wiring at the most possible places where it can short, such as sharp bends, etc.
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Chased as much as I could last night in my apartment's parking lot. Couldn't find anything, looks like I get to start ripping the interior apart now
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Originally Posted by sampson01
faulty reverse light switch in tranny casing maybe for a fuse or bad ground connection
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I hate to throw out a stupid question here but...
Did you take the reverse light bulbs out 1st? You could have blown a bulb and the wire inside the bulb is shorting out across. Maybe you checked there already but I hate to see you tear everything apart before you try that.
If you did this already... put a good fuse in and measure the resistance across the contacts of the wiring harness (with the car off). It should NOT be zero for either one. I don't know what the normal resistance should be but if you have a short, you should be able to measure it. if they both measure the same and NOT zero. I would take a good close look at the switch.
Did you take the reverse light bulbs out 1st? You could have blown a bulb and the wire inside the bulb is shorting out across. Maybe you checked there already but I hate to see you tear everything apart before you try that.
If you did this already... put a good fuse in and measure the resistance across the contacts of the wiring harness (with the car off). It should NOT be zero for either one. I don't know what the normal resistance should be but if you have a short, you should be able to measure it. if they both measure the same and NOT zero. I would take a good close look at the switch.
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Ya I pulled the bulbs out and inspected them I didnt have a tester at the time but I can borrow one and try out the sockets but they looked to be just fine.
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Originally Posted by Flaminchiten67
I'm thinking its the reverse light switch, pulled apart the whole interior and followed wires all over and couldnt find anything.
ya i had to do one at work on a 95 firehawk .... it was kickin my *** until i thought of what it could be and it was becauase the ball in the reverse light switch was frozen ..... if u wanna check it out its in the right side of the tranny halfway down it ..... easy as ***** to get out ..... probably will solve your problem
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It is the reverse light switch in the tranny. Replace it and your blowing fuses problem will be over. I (as well as many others) have had that problem. Replacie the reverse switch in the tranny and you will be good to go again.
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Anyone got a part number for the reverse switch in the tranny?
Never mind I think I found it, 14069600 if anyone is interested
Never mind I think I found it, 14069600 if anyone is interested
Last edited by Flaminchiten67; 07-08-2006 at 10:29 AM.