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Jeep Grand Cherokee Limited Smartkey Problems?

20 messages,  Last post on Sep 15, 2011 at 7:14 AM

You are in the Jeep Cherokee and Jeep Grand Cherokee Forum.

What is this discussion about? Jeep Grand Cherokee, Electrical, SUV

Messages Page 3 of 3

#18 of 20 Re: 2001 Jeep Grand Cherokee [carlsice] by carlsice

Aug 24, 2011 (9:10 am)

Replying to: carlsice (Aug 24, 2011 8:27 am)
I just went out to my wonderful reliable jeep and disconected the battery, (again) and removed the coolant resevoir tank, removed the 3 connectors to the PCM and the two above attached to the firewall. I sprayed all pins with electronic contact cleaner, and blew out everything with compressed air. Re-attached everything and turned key on I realized I had gauge readings. So I tried starting and it started right up. I don't know if it was the connector cleaning/reseat or battery disconnect. I did re-set battery last week with no help. I am probably going to send next update from side of the road somewhere.....wish me luck.

#19 of 20 hey by champ424

Aug 30, 2011 (9:28 am)

how did everything work out for you? the garage is running full diagnostics on it, but i too believe its something to do with the pcm.

#20 of 20 Re: 2001 Jeep Grand Cherokee [champ424] by mgraham515

Sep 15, 2011 (7:14 am)

Replying to: champ424 (Aug 16, 2011 10:10 am)
I had the same issues with my 2001 Jeep Grand Cherokee about 2 months ago. In the end it was the PCM.
Problem started with gauges not working. Then starting/stalling issue. No a/c, windows occasionally would not work. After researching a lot of forums and blogs I tried several things. Cleaned battery terminals. Tested several modules for a short (window, MIC etc..). I had 2 problem codes, P1686 (no SKIM bus) and P1687 (no MIC bus).
The PCM is expensive. I was quoted $700.00 for a new one, not counting labor. The PCM has to be programmed to your vehicle but, this doesn't have to be done by the dealer like they want you to think. I found a company out of FL that sells refurbished and programmed PCM's. Allcomputerresorces.com. My jeep has been running fine since I replaced it a month ago. It was very easy to replace.

Messages Page 3 of 3

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