diagnosing a mystery current drain
wrightj at apple.com
Tue Nov 18 12:57:25 CST 2008
On Nov 18, 2008, at 10:27 AM, davidpertuz at mindspring.com wrote:
> Can some of you who are more electrical people than I am (I'm an
> engineer, but while I am a lot better at electrical diagnosis than I
> used to be, I'm much more of a mechanically-minded person) lay out
> for me the most time-effective method for finding what'd draining my
Here's what I would do. First, you'll need a meter with an ammeter.
Open the fuse box, and with the keys out and the car off, pull each
fuse, insert the meter probes, and see if there is a current.
Continue through each fuse until you find something interesting. A
small draw will be normal for some things (keeping dash/radio clocks
set, dome light, etc), but I'm guessing that the culprit will be
obvious when you find it.
Having a wiring diagram for your vehicle will be very important in
tracking things down further.
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