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No Bus odometer and dead cluster?????

Discussion in 'Interior' started by Brian Holley, Jan 2, 2020.

  1. Brian Holley

    Brian Holley Junior Member

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    I have a 2001 ram 1500 4x4 ,5.9 , 98,581 miles
    A few days a ago my gauges stopped working and my ABS, check engine and brake lights came on. In the odometer, the mileage will show for about 3 seconds, then it changes to NO Bus. When the key is turned on the gauges move slightly but thats it.
    I spoke to a long time dodge service manager and he said he remembers there being issues with some of the clusters in the 99-01 model years , but there were no recalls. He searched his data base and found a couple mentions of cause being a burnt circuit board on the cluster, to the PCM failing. Do any of you have any info on this?
     
  2. SportRam00

    SportRam00 Senior Member

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    If the truck doesn't die when you see NOBUS on the odometer, then it doesn't sound like the PCM is bad. I would start by checking the plugs and wiring to the cluster. Something is grounding the signal to the cluster somewhere. If you don't find anything, maybe hit a parts yard for a cluster out of another vehicle and see if it works.
     
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  3. Brian Holley

    Brian Holley Junior Member

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    is there a wiring diagram on here somewhere that shows what all is on the BUS circuit?
     
  4. SportRam00

    SportRam00 Senior Member

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    There is a link on this board to the second gen dodge ram factory service manual. There are a number of wiring diagrams in section 8 I believe. Look in the 2nd Gen DIY section. There is a sticky with the link to download the manual.
     
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  5. OCDTech

    OCDTech Senior Member Supporting Member

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    Probably not your issue but similar year and problem, good watch, i learned stuff. Its a three part deal.

     
  6. Brian Holley

    Brian Holley Junior Member

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    Ok, update time, I tried a thing I found on another page that said if I hold the trip meter in, then turn the key to the on position and release the trip button, it will cause the instruments to go into check mode. They said all gauges should sweep over and back and all lights should come on then off. Well I did it, "check" popped up in the odometer and nothing happened, then it started flashing codes 900,920,921,940,950,999. They said if the gauges didn't seep and lights come on the cluster is bad. Do any of you k now if this is true? I had the cluster out and looked over the circuit board, I didn't see any obvious burnt places. I put the cluster back in and while I was hooking up the shift indicator I looked up and the gauges were working. I had also just checked the plug on what I think was the clock timer? so I don't know which caused them to work , BUT they quit again and I can't get the back on. As to the clock timer it was affixed with 2 screws to the steel support right of the steering column. If the timer was bad would the truck run? Mine runs even with the instruments pulled. Also do you guys know of anyone who repairs clusters? I am only finding GM and Ford, the dodges are only 2002 and newer
     
  7. SportRam00

    SportRam00 Senior Member

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    You may need to source a cluster from a parts yard. However, it sounds like a loose connection or broken wire may be your problem since when you reinstalled the cluster, it came back to life for a moment. I believe the truck will still run if it has a bad CTM.
     
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  8. Mop

    Mop Member

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    If it were just the lights and speedo on the fritz, I'd swear your speed sensor was bad on the rear differential. This might not be that simple, but you can check it first, so you don't go too crazy to start.
     
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  9. Brian Holley

    Brian Holley Junior Member

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    I am going to look that direction as I just had new tires put on the day before this all started. I'm hoping they just knocked something loose
     
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