97 TJ Instrument Cluster Problems- Normal fixes not working - JeepForum.com
 
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post #1 of 13 Old 08-16-2014, 07:47 PM Thread Starter
Timmyjane
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97 TJ Instrument Cluster Problems- Normal fixes not working

I am hoping that someone may have an idea. My jeep has been in the sh for almost 3 weeks now and everyone appears to be stuck.

As the title says my instrument cluster is not working. The problem is intermittent. The needles will go to the left and stay there for sometimes just a few seconds and other times days.

So far all the wiring appears to be ok, the terminals on the cluster have been cleaned and tweaked to ensure contact. We have tried a new panel. Changed out ignition switch and replaced the clock spring. Also addition grounds were added to the panel or harness somewhere. I don't know where the shop added them but they said that the grounds fix the problem 99% of the time. I've got the special 1% I guess.

The shop I took it to specializes in Jeeps. They ran out of ideas and sent it to another man who supposedly worked 25 years at the dealership. He couldn't fix it either. Hopefully the collective knowledge of this group can help.

The check gauges light does illuminate when the cluster dies. Don't know if that helps.

Anyone have any ideas?

Thanks a lot.


Last edited by Timmyjane; 08-16-2014 at 08:59 PM.
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post #2 of 13 Old 08-16-2014, 07:58 PM
jenki
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Check the traces on the back of the cluster
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post #3 of 13 Old 08-16-2014, 08:56 PM Thread Starter
Timmyjane
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We have tried a completely different cluster with no change.
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post #4 of 13 Old 08-16-2014, 09:02 PM
Knuckelhead
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Some reading for you about Twisted Pair Wiring : https://www.jeepforum.com/forum/f9/98...solved-595954/
... HTH

Gone but not forgotten.
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post #5 of 13 Old 08-16-2014, 10:49 PM
Jeep Daddy
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It's probably an open or shorted wire in the loom behind the valve cover but fastened to the firewall. If I were you, I'd probably find a wrecking yard that has one that is you EXACT year and model and try that. Or, carefully pull yours off and take it apart and check each wire with a fine tooth comb.

2004 Rubicon, 6" lift, 35s, winch, hard top, full doors, bumpers, tire carrier and rock sliders.
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post #6 of 13 Old 08-17-2014, 09:10 AM Thread Starter
Timmyjane
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Quote:
Originally Posted by Knuckelhead View Post
Some reading for you about Twisted Pair Wiring : https://www.jeepforum.com/forum/f9/98...solved-595954/
... HTH
Thanks for the reply. I have read that post before. I have a 97 and the TSB that was the root cause of the need to twist has not been performed on this Jeep. If I understand correctly the TSB does not apply to the 97 model, starts with the 98.
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post #7 of 13 Old 08-18-2014, 01:39 PM Thread Starter
Timmyjane
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Guess I'm going to have to go to the dealership.
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post #8 of 13 Old 08-27-2014, 12:40 PM Thread Starter
Timmyjane
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The actuator test on the gauge cluster shows the gauges are ok. Could a bad PCM be the cause? Any way to test?
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post #9 of 13 Old 08-27-2014, 02:37 PM
JWebber
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Try pulling PCM plugs and spray down with elec. contact cleaner. It could be a connection signal wire or ground etc..
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post #10 of 13 Old 08-27-2014, 03:27 PM Thread Starter
Timmyjane
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Actually just finished trading out PCMs...not PCM.
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post #11 of 13 Old 08-27-2014, 03:29 PM Thread Starter
Timmyjane
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Unless it's on the harness side?? I'll clean my plugs and see what happens. Thanks J.
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post #12 of 13 Old 08-27-2014, 03:36 PM Thread Starter
Timmyjane
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Anyone know which of the three plugs houses the CCD connection?
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post #13 of 13 Old 08-28-2014, 03:03 AM
Jonny Jeep
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CCD bus is wired to the grey plug. Pins 28 White/black (CCD BUS-) and 30 Violet/brown (CCD BUS+). The wires are the same colours at the grey cluster connector pins 1 and 2.
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