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P1686 P1687 dtc's

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Old 07-08-2013, 11:56 AM
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Default P1686 P1687 dtc's

Hi everyone I am a newbie having lots of problems with my 2001 grand Cherokee. It started with losing all my gauges but truck ran fine. I then disconnected the battery to try and reset the pcm , after disconnecting battery the truck starts and shuts off. Replaced the skim module cant program told its a bus problem to instrument panel and skim module I have been chasing wires disconnected everything in the truck. Has anyone experienced this problem or where can I find a wiring diagram for this model year jeep. Thanks for any help
Old 08-19-2014, 10:10 AM
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having the same problems with my truck, you cannot just replace the skim module, you need to have it programmed to your pcm with a 4 digit pin code that the dealer has. I am in the midst of trying out a solution to deleting the skim on my truck I will tell you if it works, I have a 2001 xj too
Old 06-30-2015, 03:39 PM
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Originally Posted by Slave2theXJ
having the same problems with my truck, you cannot just replace the skim module, you need to have it programmed to your pcm with a 4 digit pin code that the dealer has. I am in the midst of trying out a solution to deleting the skim on my truck I will tell you if it works, I have a 2001 xj too
I am having the same problem.... were you able to bypass the SKIM? if so how, I'm at a loss right now with mine
Old 11-09-2019, 08:34 AM
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Why did this thread stop? I need the answer to the question.
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