Author [NL] [FR] [ES] [DE] [SE] [IT] TPS Voltage values  (Read 573 times)

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  • Offline sezian   gb

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    TPS Voltage values
    on: Jun 04, 2022, 09.01 am
    Jun 04, 2022, 09.01 am
    My bike has been stalling and having cleaned the stepper motor things (initially) didn't change, I was advised to check the TPS voltage, values on Dealertool show 0.718 not running, 0.698 bike running.

    The bike now for whatever reason seems to be running okay but as far as I'm aware the TPS voltage should be 0.6 + or - 0.2.

    Conundrum -  should I leave it as is or should it be adjusted? I've had the bike from new and completed all service work myself so I'm 100% sure the TPS has never been adjusted, could it have come from the factory with this setting, is it possible for the voltage vale to change during it's life?

    If you are able to give any info or instructions on how to alter please let me know.  :028:

  • Offline awjdthumper   gb

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    Re: TPS Voltage values
    Reply #1 on: Jun 04, 2022, 09.26 am
    Jun 04, 2022, 09.26 am
    It may still be too early in the morning for my brain to have started functioning correctly but isn't your TPS voltage within the specified range; 0.4 V < 0.718/0.698 V < 0.8V :084:

    I read somewhere that the problem with trying to adjust it with DealerTool is that the stepper motor has to be first commanded to close the throttle fully which you can't actually do with DealerTool. To close the throttle fully you might need to remove the stepper motor first and then close it manually.
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  • Offline chuckxc   au

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    Re: TPS Voltage values
    Reply #2 on: Jun 04, 2022, 11.04 am
    Jun 04, 2022, 11.04 am
    TPS spec voltage range is 0.58V to 0.62V.
    This can be set by  rotating the TPS after loosening the two lock screws.
    Here's a pic from the older manual that might help.

    Laterally unstable unless moving.

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  • Offline sezian   gb

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    Re: TPS Voltage values
    Reply #3 on: Jun 04, 2022, 11.18 am
    Jun 04, 2022, 11.18 am
    Thanks for the info.

    I guess the other question is, what is affected by having the voltage slightly above target voltage?

    As mentioned I'm sure the bike must have come to me with the settings I've listed, unless they can change over time.

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    Re: TPS Voltage values
    Reply #4 on: Jun 04, 2022, 11.30 am
    Jun 04, 2022, 11.30 am
    I wouldn't be too concerned if your idle is ok.
    (Idle should be around 1300 rpm from memory.)

    My sense is you had some other problem that cause your earlier problem and it sounds like you have it resolved. I doubt it had anything to do with the TPS.

     
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  • Offline sezian   gb

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    Re: TPS Voltage values
    Reply #5 on: Jun 04, 2022, 11.33 am
    Jun 04, 2022, 11.33 am
    Does the adaptive ECU have the ability to adjust the TPS voltage range?

    Could this be because I'm running a replacement end can which is presumably more free flowing than standard.

     :187:  :110:   :169:

  • Offline awjdthumper   gb

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    Re: TPS Voltage values
    Reply #6 on: Jun 04, 2022, 12.00 pm
    Jun 04, 2022, 12.00 pm
    I assume the ECU is programmed for a fully closed throttle to correspond to a TPS voltage of 0.6 V (with 0.02 V tolerance either way). However, once the engine has been run, the ECU will adaptively work out what TPS voltage gives a tickover of 1100 rpm or thereabouts and that will become the lowest working TPS voltage. With this set up, there will then presumably be enough voltage range left on the TPS all the way up to full throttle.

    On this basis, I think the 0.6 V voltage is only important as a starting point for the adaptive process and after that it doesn't really matter as long as the bike has enough TPS dynamic range up to full throttle. I assume the voltages reported at the start of the thread were just the adapted voltages?
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  • Online T800XC   ua

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    Re: TPS Voltage values
    Reply #7 on: Jun 04, 2022, 02.06 pm
    Jun 04, 2022, 02.06 pm
    *Originally Posted by sezian [+]

    The bike now for whatever reason seems to be running okay but as far as I'm aware the TPS voltage should be 0.6 + or - 0.2.

    Those target voltage figures are for guidance to setup the TPS correctly when the throttle is driven fully closed from diagnostic software. They will read higher than this once reset and everything has adapted. For reference, the last recorded value I have in my notes from my old Tiger 800XC was 0.684V.



    *Originally Posted by awjdthumper [+]
    I assume the ECU is programmed for a fully closed throttle to correspond to a TPS voltage of 0.6 V (with 0.02 V tolerance either way). However, once the engine has been run, the ECU will adaptively work out what TPS voltage gives a tickover of 1100 rpm or thereabouts and that will become the lowest working TPS voltage. With this set up, there will then presumably be enough voltage range left on the TPS all the way up to full throttle.

    On this basis, I think the 0.6 V voltage is only important as a starting point for the adaptive process and after that it doesn't really matter as long as the bike has enough TPS dynamic range up to full throttle. I assume the voltages reported at the start of the thread were just the adapted voltages?
    Yep, seems to make sense.

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