Question about 1997 Jeep Grand Cherokee

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Battery Drainage on a 1997 Jeep Grand Cherokee

I see that a few people have also had this problem. As they said, something is slowly draining my battery. It usually takes a few days of not driving it. I've worked in body shops for about 7 years so I do have a good amount of car knowledge, but this has me stumped. A couple of things to consider in regards to this problem: 1. It is a limited edition GC so it has the Automatic Temp Control that broke about 2 years ago. I re-wired the blower motor to bypass the ATC, but I know the motor is not running all the time because you can hear it when it runs, and I have a switch in the circut. 2. The tailgate slowly became inoperable. First the defroster quit working, then the flip glass and handle quit working. Now I can't get the gate or the glass to open, which is a separate problem in itself. (Although I think everything might have to do with each other.) Also, the limited has a computer that tells you when things are not working. It used to tell me "rear light failure" because a small light in the 3rd brake light quit working, but I've never replaced the bulb. That message has not been showing up since I lost all tailgate functions, The rear lights and brake lights still work though. I'm completely stumped, I figure it is a short somewhere but I'm not sure how to go about finding the right circut.

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  • 63willysjeep Nov 24, 2008

    Thanks, that worked to find the right circut. I really appreciated it!



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Hi,I think the solution that cbuss20 is the propper way to do this,but it would not hert to change that tail-light lamp as it showed up as a falt,some times they can still work but still be falty.
best of luck.

Posted on Oct 29, 2013

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Best way put a test light between the neg battery cable and the battery post - If the test light lights their is something on Example, dash light, door light, Etc. Level the test light connected and close all doors and make sure hood light bulb is out. If the test light is still on remove lights for glove box and other places and see if this is the cause of the short. Next pull fuses one at a time

Note a 12v test light not a volt tester

Posted on Nov 22, 2008


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Something keeps DRAINING the battery?

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Nov 22, 2008 | 1997 Jeep Grand Cherokee

1 Answer

Slow battery drainage on 97 Jeep Grand Cherokee

Let's see if we can get this thing solved. First disconnect the battery positive cable, then connect a test light between the battery positive terminal and the cable you removed. If there is something draining the battery, the test light will be on. Depending on what the draw is, the light could be on bright or dim.
Leave the test light hooked up and open the drivers door, the light will come on brighter because we induced a draw from the interior lights. To find out what is draw amps from the battery, first remove the dome light fuse because the door is going to be open. Start removing fuses one at a time and watch the test light. If the light goes out, you found the circuit that is drawing volts from the battery. If the light does not go out, put that fuse back in and try another one. Keep doing this until you find the circuit with the problem. When you find the circuit, please reply and I'll see if I have an answer.

Nov 22, 2008 | 1997 Jeep Grand Cherokee

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