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Jeep Grand Cherokee Limited Smartkey Problems?
I'm driving a 2004 Grand Cherokee Limited with approx. 95,000 miles. About two days ago I was out in the mountains and got back to my car from a hike and she would start, run for about two seconds and then stall out from what seemed to be a lack of fuel. All of my gauges were flat dead. After about two hours of messing around, I managed to get it started by spraying down the connections to the alternator with some contact cleaner. I don't know why this worked. The car ran normally to get me home.
The next day, I had to go back to that same spot to look for something I had lost (all normal getting there), and when I got back in the car and started it; it did the same thing once, then started and ran. All was fine for about five miles, and then my gauges started going haywire. They would work normally and then drop off randomly, and not in unison. Various random warning lights were going on and off. Also, my drivers side window and door locks stopped functioning at this point, but would work when the gauges were working. There were a few other bugs, such as the cruise control and steering wheel mounted stereo controls not working. I immediately went home and parked it. Upon trying to start it again, it did the same thing...started strong, ran for about two seconds, then died from what seems to be a lack of fuel.
I borrowed a code reader and got two codes which read as follows:
P1696 - No CCD/J1850 Message From TCM. "No CCD/J1850 messages received from the electronic transmission control module (EATX) or the Asian transmission controller)"
P1686 - No SKIM BUS Messages Received. "No CCD/J1850 messages received from the Smart Key Immobilizer Module (SKIM)"
The smart key system seems to be the issue. My understanding is that the anti-theft system is operated by shutting off the fuel pumps, so this makes sense. Additionally I get the icon of a key with a line through it for on the dash when trying to start the car.
What confuses me is the other issues showing up, the gauges dancing and various, seemingly unrelated electrical bugs. Could this be a result of issues with the ground strap? Could a loose ground strap be the root of all of the issues? If so, where could I find information on repairing it? My Haynes service manual is completely devoid of information on this.
Thank you for your time and input.