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Instrument cluster odometer resetting

Discussion in 'XJ Technical Chat' started by Steveb, Aug 6, 2018.

  1. Steveb

    Steveb Member

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    Hey people my trip odometer keeps resetting.
    It's an 82 xj750 D2
    I looking for a pic of the wire I would need to check for breaks that keeps the instrument cluster from resetting when you turn off the ignition . if someone can point in right direction.

    Literally just want to check the wire for breaks start at the easiest option checking the wire and then strip the fairing if not that
     
  2. Jetfixer

    Jetfixer Well-Known Member

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    Sounds like you do not have a stock speedo , does yours have a digital readout? My cluster the trip odometer is mechanical with a reset knob. Pictures might help. Cheers
     
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  3. Steveb

    Steveb Member

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    Will try get pics up tomorrow the d2 came digital in 82 all digital dash
     
  4. jayrodoh

    jayrodoh YimYam

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    I have zero experience with that but have you found a wiring diagram? I would see if there is a wire that is constantly hot for the dash. If not, then you’ll need to pull the cluster apart and see if there is a battery or cap in there for memory.

    Maybe someone with more knowledge of that model will jump in but that’s where I would start if I had one and nothing to start with.
     
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  5. Rooster53

    Rooster53 Well-Known Member Premium Member

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  6. jayrodoh

    jayrodoh YimYam

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    Looks like this?

    [​IMG]
     
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  7. k-moe

    k-moe Pie, Bacon, Bourbon. Moderator Premium Member

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    Ya. JDM only.
    Contact member Yu Tanaka. He is from (and is in) Japan, and should have access to the information that you need.
     
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  8. hogfiddles

    hogfiddles XJ-Wizard, Host-Central NY Carb Clinic Moderator Premium Member

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  9. Rooster53

    Rooster53 Well-Known Member Premium Member

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    Well since you have the only manual in existence in the states maybe you can help the OP by looking at the electrical diagram to see if there is unswitched power to the instrument cluster.
     
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  10. hogfiddles

    hogfiddles XJ-Wizard, Host-Central NY Carb Clinic Moderator Premium Member

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    I'll see if I can____
     
  11. k-moe

    k-moe Pie, Bacon, Bourbon. Moderator Premium Member

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    The FSM usually does not include schematics for individual component circuitry.
     
  12. hogfiddles

    hogfiddles XJ-Wizard, Host-Central NY Carb Clinic Moderator Premium Member

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    Here's what I THINK you need....
    Ist pic is of the dash with what I THINK is the word/characters for what you need to match up somewhere in 2nd pic.

    I don't read or speak Japanese, so other than being able to give you the pics, I can't tell you anything other than it's really cool to look at this manual :)

    IMG_4781.JPG

    IMG_4782.JPG
     
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  13. Rooster53

    Rooster53 Well-Known Member Premium Member

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    Thanks to hogfiddles and the diagram you can see the output of the main fuse has a wire that goes to a 6 pin connector on the CMS. That should be the one that keeps the cluster from resetting for the trip meter, clock, etc. Unfortunately, you still need an interpreter to determine the wire color, but just finding that connector and probing for a unswitched 12V power should suffice to rule out the wiring.
     
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  14. Steveb

    Steveb Member

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    Th
    Much appreciated for the pic I know that as rear as the bike. Funny enough I charged up the battery on a different issue and the odometer and clock are now working again. No reset when turn off the bike
     
  15. Steveb

    Steveb Member

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    very much appreciated for the replies lads charging my battery seem to bring the trip odometer and clock working again .would that be maybe the reg/rectify be failing
     
  16. Steveb

    Steveb Member

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    Hey hogfiddles that's my bike in the add you found lol was going swap/sell it but it kinda grows on you. It was only released for the domestic Japanese market originally fuel injection but very unreliable now running Fazer 600 carbs
     
  17. Steveb

    Steveb Member

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    Yep that's it fairly advanced set up for 82
     
  18. Steveb

    Steveb Member

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    Thanks jay actually charged battery and everything came back to life odo and clock working again
     
  19. Steveb

    Steveb Member

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  20. Rooster53

    Rooster53 Well-Known Member Premium Member

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    Well that turned out to be easy, we should have suggested checking battery voltage.

    And yes you should check out the charging system and the battery. With a fully charged battery (12.8V) and meter leads placed across the battery you should get in the neighborhood of 14.5V +/- .3 volts at 2K rpm and up - assuming the 750 D2 charging system would be similar to the others of this era.
     
  21. Steveb

    Steveb Member

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    The battery is 6 months old it's a yusa I thinking it could be reg/rectify it's the 1982 original I think all Japanese writing on front of it
     
  22. Steveb

    Steveb Member

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    So I am back again the problem resurfaces once I let the bike sit for a day or two the clock and odometer resetting again. It worked great for few days then let it up for day or two and back to square one
     
  23. hogfiddles

    hogfiddles XJ-Wizard, Host-Central NY Carb Clinic Moderator Premium Member

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    Does the bike start normally though?
     
  24. k-moe

    k-moe Pie, Bacon, Bourbon. Moderator Premium Member

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    Is there a battery for the trip odometer memory? If not, would it be difficult to wire one in?
     
  25. Steveb

    Steveb Member

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    Yeah starts on the button no problems there and the light gets brighter as you rev the bike in neutral. It has 12 or so amps sitting in the bike and goes up to 13.5 under load of 2k revs I probably just being picky TBF. Just a a mpg nerd I like to know what distance I am doing don't care bout the clock it's the trip odometer I want lol
     
  26. Steveb

    Steveb Member

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    For lads here on forum no me yes I have biked for 13 straight years and learned I bad with spanners
     
  27. hogfiddles

    hogfiddles XJ-Wizard, Host-Central NY Carb Clinic Moderator Premium Member

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    You mean VOLTS
     
  28. Steveb

    Steveb Member

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    Sorry yes volts lol for its age everything else runs smooth I can. Get over it but thank you everyone for the pics the suggestion and problem solving
     

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