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Thread: CVT Start Clutch Calibration - The AUTEL Way

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    Default CVT Start Clutch Calibration - The AUTEL Way

    ALHAMDULILLAH

    I had been looking for a bi-directional scan tool since long and been saving up for it. Finally the much awaited tool arrived yesterday. And I thought of sharing it with fellow members along with posting the first tool application.

    The Steermatic battery had completely drained in the past couple of days and the ECU forgot about the CVT start clutch calibration. Sadly this happens everytime if the battery is disconnected or it completely discharges.

    So instead of the old "drive upto 60 and decelerate method" suggested in ESM, I thought of putting the tool to some use.


    But before I proceed, I must thank the one person who made it possible for me to decide. Without his input, I would have ended up with a wrong choice or some chinese clone.

    The one and only, our teacher, our automotive mentor, our guru and our respectful elder brother @Xulfiqar bhai.

    Thanks alot Xulfiqar bhai.

    CVT Start Clutch Calibration  The AUTEL Way -1457460

    ----------------------------------------------------

    Okay here we go

    CVT Start Clutch Calibration  The AUTEL Way -1457456

    CVT Start Clutch Calibration  The AUTEL Way -1457457

    CVT Start Clutch Calibration  The AUTEL Way -1457458

    CVT Start Clutch Calibration  The AUTEL Way -1457459


    Proof of Product Authenticity (Online Registration)

    CVT Start Clutch Calibration  The AUTEL Way -1457455


    Now the Calibration Procedure.

    CVT Start Clutch Calibration  The AUTEL Way -1457461

    CVT Start Clutch Calibration  The AUTEL Way -1457462

    CVT Start Clutch Calibration  The AUTEL Way -1457463

    CVT Start Clutch Calibration  The AUTEL Way -1457464

    CVT Start Clutch Calibration  The AUTEL Way -1457465

    CVT Start Clutch Calibration  The AUTEL Way -1457466

    CVT Start Clutch Calibration  The AUTEL Way -1457468

    CVT Start Clutch Calibration  The AUTEL Way -1457469



    Question: So whats my point:

    The point is: when your CVT starts giving poor idle in D (excessive vibarations), and idles itself all fine in N, you would want to calibrate you r transmission start clutch. Most Honda dealerships and some "gheroo-program" mechanics advise throttle body service, engine/tranny mounting replacements, valve body replacements and what not.

    However, its just a couple of steps in procedure to get it back on road hassle free.

    Happy CVT driving. Cheers

    JazakAllah
    The Soul's Journey After Death in Islam (www.bit.ly/SoulsJourney) -- Originally Shared by kse101

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    @Xulfiqar brother i have a question that why there are two solenoids for tourqe converter lockup?
    93 Accord CB7 (Sold) / 2005 CL7

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    Quote Originally Posted by galant1 View Post
    @Xulfiqar

    ....................

    Also tell me about prosmatic transmission present in civic 01-05-their main principle etc like these .

    Either these prosmatic transmission present in civic 01-05 are controlled-shifting etc by ecu or not?

    Either these prosmatic transmission present in civic 01-05 can be checked by scanner or not?
    If we talk about mechanical principal, these prosmatecs are like manual gear transmissions, with only difference that the dog teeth are now replaced with clutches (Unlike planetary set). The shifting is done based on instantaneous engine load, engine rpm and vehicle speed.

    Shifting signals are sent by ECU to shifting solenoids along with Shift aggression controlled by Pressure Control Solenoids. Input shaft, counter shaft and Output shaft Speeds are monitored to check which one is not spinning the way its supposed to spin.

    EDIT: Additional Content about Dynamic Shifting has been removed in light of post #111 and after revisiting basics of Hydraulic Transmissions.
    The Soul's Journey After Death in Islam (www.bit.ly/SoulsJourney) -- Originally Shared by kse101

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    Quote Originally Posted by afnan.bashir View Post
    @Xulfiqar brother i have a question that why there are two solenoids for tourqe converter lockup?
    Like Xulfiqar explained in the Accord thread, these are On-Off type solenoids (Unlike variable engagement type). One is for partial lockup, allowing engagement of partial hydraulic pressure circuit. The other one is for complete lockup (full pressure application to lockup clutch).
    The Soul's Journey After Death in Islam (www.bit.ly/SoulsJourney) -- Originally Shared by kse101

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    Quote Originally Posted by rustam54 View Post
    Like Xulfiqar explained in the Accord thread, these are On-Off type solenoids (Unlike variable engagement type). One is for partial lockup, allowing engagement of partial hydraulic pressure circuit. The other one is for complete lockup (full pressure application to lockup clutch).

    Agreed but what I cant figure out when to turn on which solenoid........ above 80kph i suppose full lockup happens......... not sure when to turn on the other one
    93 Accord CB7 (Sold) / 2005 CL7

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    Quote Originally Posted by Xulfiqar View Post
    Hmm

    Did they really try to test the AT from their tool?

    Sounds like they were trying to con some money. Thev transmission in your car is hydraulic meaning there is no electric control. How do you expect this to scan something that's non existant.

    The transmission is pressure tested from various ports which are for the various clutches and control pressure. It shifts from pressure differential between the speed governor and throttle cable.

    The honda prosmatic can be interrogated . Yours is not prosmatec.
    Sound Like Someone Try To Test Blood Pressure Using Ultra-SOund Machine :\ The IRONY...They Even Charge For It
    TOYOTA Sprinter 86- AE80 DOHC 20v'D TOYOTA Corolla 98- AE101 4AFE 16v

  7. #106
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    CVT Start Clutch Calibration  The AUTEL Way -1470444

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    Quote Originally Posted by afnan.bashir View Post
    Agreed but what I cant figure out when to turn on which solenoid........ above 80kph i suppose full lockup happens......... not sure when to turn on the other one
    To answer your question, I have to copy paste an example. In promatec, the lock-up points vary with APP + Attained speed value (thus an overall demanded load at a certain point)


    A/T Road Test

    Upshifting in D

    Accelerator pedal position sensor A voltage: 1.26 V
    Lock-up ON 42−46 km/h (26−29 mph)

    Accelerator pedal position sensor A voltage: 2.53 V
    Lock-up ON 123−129 km/h (76−80 mph)


    Downshifting in D

    Accelerator pedal position sensor A voltage: 1.26 V
    Lock-up OFF 41−45 km/h (25−28 mph)

    Accelerator pedal position sensor A voltage: 2.53 V
    Lock-up OFF 116−122 km/h (72−76 mph)


    Fully-opened throttle
    Accelerator pedal position sensor A voltage: 4.50 V
    Lock-up OFF 170−176 km/h (106−109 mph)

    So you see, its not a fixed point. This has to be programmed as lock-up condition table. However partial can be engaged slightly below full lock-up.
    The Soul's Journey After Death in Islam (www.bit.ly/SoulsJourney) -- Originally Shared by kse101

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    Quote Originally Posted by fairleo View Post
    CVT Start Clutch Calibration  The AUTEL Way -1470444
    Yup. Its the same 1KR-FE with K41 transmission.

    Please refer to below post for your query.

    LINK
    The Soul's Journey After Death in Islam (www.bit.ly/SoulsJourney) -- Originally Shared by kse101

  10. 03-09-2014, 07:26 PM

    PakWheeler

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    Quote Originally Posted by rustam54 View Post
    To answer your question, I have to copy paste an example. In promatec, the lock-up points vary with APP + Attained speed value (thus an overall demanded load at a certain point)


    A/T Road Test

    Upshifting in D

    Accelerator pedal position sensor A voltage: 1.26 V
    Lock-up ON 42−46 km/h (26−29 mph)

    Accelerator pedal position sensor A voltage: 2.53 V
    Lock-up ON 123−129 km/h (76−80 mph)


    Downshifting in D

    Accelerator pedal position sensor A voltage: 1.26 V
    Lock-up OFF 41−45 km/h (25−28 mph)

    Accelerator pedal position sensor A voltage: 2.53 V
    Lock-up OFF 116−122 km/h (72−76 mph)


    Fully-opened throttle
    Accelerator pedal position sensor A voltage: 4.50 V
    Lock-up OFF 170−176 km/h (106−109 mph)

    So you see, its not a fixed point. This has to be programmed as lock-up condition table. However partial can be engaged slightly below full lock-up.
    Lockups are for crusing they are not meant for acceleration or de-acceleration
    93 Accord CB7 (Sold) / 2005 CL7

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    Quote Originally Posted by afnan.bashir View Post
    Lockups are for crusing they are not meant for acceleration or de-acceleration

    Agreed for Hydraulic Transmissions as per post #111.


    The case is however different for newer electronic controlled transmissions

    In the manual that I quoted above, the lock-up can engage in all gears when in D.

    In D3, it engages only in 3rd gear. It does not engage in 2 or 1.

    CVT Start Clutch Calibration  The AUTEL Way -1470599
    The Soul's Journey After Death in Islam (www.bit.ly/SoulsJourney) -- Originally Shared by kse101

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    Governor type is also dynamic. It fights the throttle pressure valve. But for lockup there is a set speed that allows the function.
    ZRS - Zulfiqar Racing Systems ..... - professionals at work - at crackwheels.com

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    Quote Originally Posted by Xulfiqar View Post
    Governor type is also dynamic. It fights the throttle pressure valve. But for lockup there is a set speed that allows the function.
    Hmmmm. Duly noted and correction done in respective posts.
    The Soul's Journey After Death in Islam (www.bit.ly/SoulsJourney) -- Originally Shared by kse101

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    In hydraulic the lockup function is dependant on throttle pressure (load) compared to governor pressure..

    E.g full throttle kickdown will disengage lock up. Partial position demanding high torque will disengage lockup. a speedy cruise becomes annoying. Unless its a variable lockup convert.

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    Yeh naye aatometik ghear dimaagh ki lassi kardetay hain

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    @rustam54 well my transmission is old non USDM F22B tranny mounted on F18B with every single thing hydraulic other than TCC Solenoid assembly......... yeh be hydraulic ker dete to zindage asan ho jate. Rite now i have two buttons for them i Manually handle them. Some time i am also able to engage full lockup at 60 kph when i cruise.

    Seems great to have 1.5k rpm and you are cruising at some 60kph , however figure changes when i step up. at 3k RPM im probably at 120 or so
    93 Accord CB7 (Sold) / 2005 CL7

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    Quote Originally Posted by afnan.bashir View Post
    @rustam54 well my transmission is old non USDM F22B tranny mounted on F18B with every single thing hydraulic other than TCC Solenoid assembly......... yeh be hydraulic ker dete to zindage asan ho jate. Rite now i have two buttons for them i Manually handle them. Some time i am also able to engage full lockup at 60 kph when i cruise.

    Seems great to have 1.5k rpm and you are cruising at some 60kph , however figure changes when i step up. at 3k RPM im probably at 120 or so

    To ease your life.

    Making Electronics: OBD-II USB adapter to Bluetooth adapter hack

    and instead of the Blutooth module, use a DIY controller setup. Tell you what, get me a spare ELM and I shall help you out with rest of the circuitry.

    Here, it shows how easy the comms is

    http://www.imsolidstate.com/archives/977
    The Soul's Journey After Death in Islam (www.bit.ly/SoulsJourney) -- Originally Shared by kse101

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    Quote Originally Posted by rustam54 View Post
    To ease your life.

    Making Electronics: OBD-II USB adapter to Bluetooth adapter hack

    and instead of the Blutooth module, use a DIY controller setup. Tell you what, get me a spare ELM and I shall help you out with rest of the circuitry.

    Here, it shows how easy the comms is

    ELM327 emulator ยป imsolidstate
    Custom Controller is no big deal. I have been playing with Atmega and Pic 16F and 18 F since 2008. I also have ELM with me.

    Problem is that When ELM would be used for TCC it would not work for diagnostics at same time. What solution do you suggest. By the way i have elm with Neela Dant....... bluetooth
    93 Accord CB7 (Sold) / 2005 CL7

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    Quote Originally Posted by afnan.bashir View Post
    Custom Controller is no big deal. I have been playing with Atmega and Pic 16F and 18 F since 2008. I also have ELM with me.

    Problem is that When ELM would be used for TCC it would not work for diagnostics at same time. What solution do you suggest. By the way i have elm with Neela Dant....... bluetooth

    You want to use the same ELM for diagnostics, or do you want to use the DLC while the ELM is doing tranny stuff??

    For 1, you can use two switches. One for turning blutooth IC power off or on. The second for re-routing Serial Link between either Blutooth IC or external controller. Since wires will be short, there wont be much noise issue.


    For 2, instead of directly plugging in DLC, one can strip the wire behind port (its latched in a bracket below dashboard). And connect 3 Connections, for J1850 Bus and Signal Ground. This is a BUS network. Means if you still connect another tool to DLC (which is free now), it will communicate while the ELM is working in background. If somehow, it doesnt communicate, we can throw in another switch to stop power to ELM and let the other tool communicate. Both options are workable.
    The Soul's Journey After Death in Islam (www.bit.ly/SoulsJourney) -- Originally Shared by kse101

  21. 04-09-2014, 01:27 PM

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    OR I could buy bluetooth module integrate it with controller and keep comunicating with elm. If we want diagnostic simply turn that controller off
    93 Accord CB7 (Sold) / 2005 CL7

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    Quote Originally Posted by afnan.bashir View Post
    OR I could buy bluetooth module integrate it with controller and keep comunicating with elm. If we want diagnostic simply turn that controller off
    Wont work in my opinion. How would you pair them together over bluetooth?? Anyways I found something that MIGHT get things started.

    CVT Start Clutch Calibration  The AUTEL Way -1470807
    The Soul's Journey After Death in Islam (www.bit.ly/SoulsJourney) -- Originally Shared by kse101

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