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Thread: Vitz Transmission Issue (likely)

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    Default Vitz Transmission Issue (likely)

    I'm having a weird problem with my Vitz (1000cc) for the past few weeks. Sometimes, when I start the car on A/C after a brief stop (of say 5 minutes) and push the accelerator, there is simply no revving and the car refuses to move at a greater speed than the naturally set speed for 'D'. When I say revv, even the engine sound of high RPM is not there. It's simply like I'm pressing a dummy paddle.

    I got my Transmission fluid changed and the whole gearbox cleaned. I changed the pipes carrying the brake fluid since they seemed pretty clogged but this problem simply refuses to disappear. I don't have much idea about these things work but my hunch is it's most likely some issue with the Gearbox or perhaps the A/C...

    I was about to get my Fuel Injectors cleaned but this type of non-responsiveness can't simply be explained away by clogged injectors. More importantly, once I'm doing 40-50 km/h, the car accelerates to higher speeds quite nicely with or without the A/C on.

    Any ideas, with some logic/evidence are highly appreciated.

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  2. #21
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    Default

    So what's my plan of action here:

    1. I go to Toyota motors and ask them to scan my car for codes
    2. If the code specifies a problem, I look into it
    3. If not, I ask Toyota to recalibrate my throttle
    4. If that too doesn't work I go for an accelerator sensor change
    5. If that doesn't work I conclude it's my transmission box after all

    Am I missing anything?

  3. #22
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    Default

    @Xulfiqar has spoken so follow his advise as he is the most techy guy around here.

    Scanning your car is a good option nonetheless.

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    Default

    you need to recalibrate the CVT oil pressure and Deceleration/ Acceleration sensor calibration to solve this issue..

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    Default

    you mean start clutch? Because there is no acceleration and deceleration sensor that you speak of?
    ZRS - Zulfiqar Racing Systems ..... - professionals at work - at crackwheels.com

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    Default

    Hey this is getting confusing. Let me try a few things out and see if they make a difference. Thanks a lot every single one of you!

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    Default

    cvt recalibration? that just takes a minutes if you have the correct scan tool
    haters gonna hate, potatoes gonna potate

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    Default

    Quote Originally Posted by Xulfiqar View Post
    you mean start clutch? Because there is no acceleration and deceleration sensor that you speak of?
    the name is zero point calibration in Toyota world
    https://www.facebook.com/OsamaAbbasPhotography

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    Default

    yep thats it.
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    Default

    Zero point calibratiion takes only a few minutes, did it on my axio via toyota techstream.
    ChipLoco.com | Anything and everything from the tech world!

  11. 10-06-2014, 09:41 PM

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    Default

    So that's what I gotta do? Zero point calibration?

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    [QUOTE=Xulfiqar;4408065]you mean start clutch? Because there is no acceleration and deceleration sensor that you speak of?[/QUOTEyup it is zero point calibration if you dont do it and reset the transmission parameters then the acceleration sensor learning error code will pop up . so in my view first he had to reset the transmission setting and then calibrate the CVT Start and zero point calibration on a flat balanced surface to get results.

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    Default

    you don't need to reset. . recalibration does everything
    https://www.facebook.com/OsamaAbbasPhotography

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    Default

    [QUOTE=rajaatta;4411516]
    Quote Originally Posted by Xulfiqar View Post
    you mean start clutch? Because there is no acceleration and deceleration sensor that you speak of?[/QUOTEyup it is zero point calibration if you dont do it and reset the transmission parameters then the acceleration sensor learning error code will pop up . so in my view first he had to reset the transmission setting and then calibrate the CVT Start and zero point calibration on a flat balanced surface to get results.

    the learn code pops up when you remove the throttle motor and do funky stuff with it like clean it and then pray it works. The ECU fails to see the feedback. Hooked on a TS it will do all the job for you.
    ZRS - Zulfiqar Racing Systems ..... - professionals at work - at crackwheels.com

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    had the same problem...scanning showed throttle position sensor error..upon inspection sensor was found ok..infact there was a wire from the cng advancer coming to TPS..once that wire connection was removed everything was ok

    Sent from my LG-P768 using PW Forums mobile app

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    [QUOTE=Xulfiqar;4411855]
    Quote Originally Posted by rajaatta View Post


    the learn code pops up when you remove the throttle motor and do funky stuff with it like clean it and then pray it works. The ECU fails to see the feedback. Hooked on a TS it will do all the job for you.
    usually the CEL wont lit up in the case of Toyota if some idiot open's and clean the TB assy and doesn't need relearning or calibration until some one reset's the transmission setting's from the utility tab in TC.. but in the case of Nissan some one messes with the throttle and the ECU show's the Middle finger along with improper idling as well if it is done improperly without CS.

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    It will pop up - atta sb - just takes longer.
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    probably transmission issue, happened with me after getting trans oil changed. I ended up getting half of the transmission replaced.

    I think this problem occurs when CVT oil mentioned by toyota for vitz is not used.
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    I think its something related to ETCS calibration issue instead of transmission problem

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    Quote Originally Posted by Xulfiqar View Post
    It will pop up - atta sb - just takes longer.
    no saheb it wont .... i the case of KSP 90 or 91 or SCP 90 or 91 version.

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    Quote Originally Posted by ecu_designer View Post
    I think its something related to ETCS calibration issue instead of transmission problem
    ETCS is linked with Transmission in the Case of Vitz so yes it is the issue with ETCS

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