I just inherited the 2001 TJ
The radio and cluster did not work. I have fixed the radio issue. It was wired wrong but now fixed and works perfect. I bring this up because I have read that sometimes radio issues can cause issues in the cluster.
Here’s what I have tried and found so far with the cluster.
I have tried cleaning, wiggling, smacking, nothing even triggered it to work. All fuses are good and I replaced them just to check. All grounds and battery terminals clean and look good. I have tried a reset of the cluster and all gauges reacted and moved. Which leads me to believe the cluster is working fine. I have a no bus message that flashes every few minutes. So I assume I have something in the jeep causing the issues.
The lights that do come on in the cluster are seatbelt, check engine, fuel, and airbag light.
Seatbelt goes off when I plug in the seatbelt. Fuel I assume will not turn off until the gauge moves. Check engine which I have three messages for o2 sensors. And airbag I can’t get it to go off even with turning off the passenger airbag, or with unplugging both airbags.
There’s lots of plugs inside the cab, and under the hood that are plugged into nothing. Someone cut out the air condition compressor and removed the a/c relay, the lightbulb at passenger feet is missing, and there’s a broken wire on the turn signal switch that controls the dimmer. I will replace this when the switch comes in. There also is a blue/white wire that I have traced from behind the cluster that leads to nowhere and I can’t figure out where it goes. (I can’t find a diagram of the wires. I’ll try to attach a photo of the wire. The blue white wire is paired with a blue/green that goes to the window defrost but do not see where the blue white goes.
Under the hood there’s also a white/red or white/pink that is cut under the hood.
The vehicle does start and run just fine.
If anyone can tell me if what I have found could have any impact on the cluster, where to find a wire diagram, or any other things I can try.
Thanks everyone
