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huge computer/electrical problem need help

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Old Jan 28, 2005 | 07:02 PM
  #1  
crasher88's Avatar
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From: Spring, Texas, US
huge computer/electrical problem need help

Ok let me start from the beginning. About two weeks ago I got my new spoiler on my car to prepare it for paint. Well after I got it hooked up properly and working the ABS Inop came on and hasn't gone off since. At first I thought it had something to do with the resistance in the aftermarket light and what came stock with the car well after checking it with a multimeter I discovered it wan'st the problem. Well anyways since I work at an auto shop with 4 hightech scanners I figured I could use one of them to figure out what the computer was saying. Well 3 out of the 4 scanners I have are made specificatly for GM cars. Well non of the scanners will communicate with my computer. So I figured I have a fuse out so I check all of them and it turnes out that I had one out. I replace it with a good fuse still won't communicate. So next I pull out the old test light and com to find out that I have absolutly no power to the fuse. Its fuse 16, I blieve, on the I/P fuse pannel inside the car. It is labeled as crank and it is protected with a 3 amp fuse. On the computer we have at my shop it says the fuse is to protect the Diagnostic Energy Reseve Moduel. So my planns tomarrow are to figure out where these wires on the back of the fuse block go to and see where that leads me. If any one else has had this problem with their Camaro could you plz give me some input I"m nearly lost and running out of ideas fast. Its for a 94 3.4L V6 Camaro but I'm sure the V8 is pretty much the same on this particular problem.
Old Jan 28, 2005 | 07:21 PM
  #2  
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Re: huge computer/electrical problem need help

Look here if you want a solution to the ABS problem because of the spoiler. If you are not having any other problems, I would not worry about it. I think you got off on a tangent.

The crank fuse only has power when the key is on and it only feeds the DERM. It is not going to have anything to do with your ABS problem.
Old Jan 28, 2005 | 07:30 PM
  #3  
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Re: huge computer/electrical problem need help

ok well that will be something to look at but it still won't explain why any of my scaners won't hook up and comminucate with my computer. And why kind of relay is that SPDT or SPST and what kind of voltage would that thing have to withstand.

Last edited by crasher88; Jan 28, 2005 at 07:34 PM.
Old Jan 28, 2005 | 09:03 PM
  #4  
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From: Little Rock, AR
Re: huge computer/electrical problem need help

It's just a standard 12v automotive relay. Most are ~30 amp, available most anywhere. The contact portion is not important as it is not really used. Only the resistance of the relay coil is what you want. People use the relay coil because it can dissipate the heat better than a regular resistor.
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