Question about Jeep Grand Cherokee
You need a test light to check for current draw--remove the negative battery connector, make sure the battery is charged, and rig the test light to complete the circuit between the negative battery post and the negative battery connector so that the light will come on with any load (don't try to start the engine). Check first for hidden lights that are supposed to come on when the glove box, hood, or any other area that you can think of is opened. Unplug the under-hood light during this test. Assuming that the light is still on, start pulling fuses one-at-a-time (then replace) until the test light goes off. That is the circuit which you must trace out--a switch is not turning something off, wiring damage, etc.. Hope this helps!
Posted on Nov 10, 2010
The best way I have found to find a shorted wire is to take a digital volt meter and hook it to the battery, (in the truck of course), Notice the readings, then go to the fuse panel and start pulling fuses one at a time. when you come to a fuse that the readings go up then that is the short or one of the shorts. this doesn't apply to the dome/ interior lights as you will have the door open to pull fuses. but if you can't find the short then it may be the dome light. also when you find a rise in the voltage it could be slight to moderate. There is also a fuse block under the hood, but check the interior fuses first. And when you find the short, say like it is going to the radio, it is probably the radio that is bad. most of the controls in your vehicle have computer chips in them and I have found that they go out first, not also but mostly. If you need more help let me know.
Posted on Nov 10, 2010
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Posted on Jan 02, 2017
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