97 expedition battery
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97 expedition battery
i just recently bought my 97 expedition got it home the next day started perfectly fine it sat for about 3 days and i went to start it the battery was dead so we jumped it. the next day started fine 3 days later it was dead again. now we have to jump it every day i got the battery and altinator checked and both are perfect . they told ne there is a short some were i have looked and looked and have not found a problem yet i am just lost.
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Joined: Jan 2001
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From: Virginia
Get a testlight and hook it up like the diagram above. If it glows bright, you have a drain.
Pull each fuse and see if you can get the light to go out. Since you have a later model vehicle, you may need to wait a few minutes with the door shut before you can do your test, since your vehicle may have a "battery saver" function, where you can still operate things for a few minutes till it times out.
If you cannot find the circuit with the drain, pull the wires off the alternator and then see if the light goes out.
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Joined: Jan 2001
Posts: 56,983
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From: Virginia
You have one of the first vehicles they started putting this stuff in. I believe in your case you have what they call a "GEM" module. You can see this module in the diagram in this link, it's the large box in the middle.
http://repairguide.autozone.com/znet...52801e5719.gif
They put all sorts of functions into this module on a big circuit board. I don't have the proper schematics, the ones at Autozone for this year are lousy. But I bet the timing function to allow stuff to work till you open the door is controlled by the GEM, and you are probably correct, the GEM probably controls a relay in the fuse box or mounted somewhere else.
http://repairguide.autozone.com/znet...52801e5719.gif
They put all sorts of functions into this module on a big circuit board. I don't have the proper schematics, the ones at Autozone for this year are lousy. But I bet the timing function to allow stuff to work till you open the door is controlled by the GEM, and you are probably correct, the GEM probably controls a relay in the fuse box or mounted somewhere else.
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