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Old 07-20-2012, 01:39 AM   #1
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Back up lights do not always come on in reverse.when this is happening the power door locks will not work.Think may be bad ground,can not seem to locate it. 98 Cherokee. Any thoughts????? Thanks!!!!!
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Old 07-20-2012, 01:42 AM   #2
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Do they come on if you juggle the shift lever a bit?
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Old 07-20-2012, 01:45 AM   #3
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No .wiggling shifter does not help.
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Old 07-20-2012, 01:47 AM   #4
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Seems to go hand in hand with power locks. That leads me to think it is a ground.
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Old 07-20-2012, 08:37 AM   #5
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According to the wiring diagrams I viewed, both systems show ending at ground point G402. Unforturnately it does not show where that is. I would start at the backup light switch and follow the ground from there. Do a check for power at the connector. It should have power on the feed line then see if you can follow the ground. You can do a continuity check on the ground wire. If it is bad there will be no continuity to ground.
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Old 07-20-2012, 09:33 AM   #6
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My bet is on the NSS.
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I had a real bad and annoying sound come from my passenger seat also. But once I broke up with my girl friend it's a LOT better...

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1992 XJ 4X4 -- Stolen and found stripped.
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1995 XJ 4X4 -- Rolled over 3 time while off road.
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Old 07-20-2012, 05:21 PM   #7
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Quote:
Originally Posted by RTorrez1 View Post
My bet is on the NSS.
Looking at the diagrams again I see that I missed something. The auto tranny has the NSS and the manual has the back up light switch. Doing the testing at the NSS would reveal the problem. Since both systems fail together it may be that ground.
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Old 07-21-2012, 10:39 AM   #8
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Thanks! Raining today, shade tree is not water tight. But I will start checking there.
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