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Thread: Clutch Position Relearn - E37

  1. #1
    Potential Tuner
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    Feb 2014
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    Clutch Position Relearn - E37

    **EDIT** - After posting the information below, I have a more basic question - should the clutch position sensor Raw data read low when the clutch pedal is all the way out or when it is pressed in? I still may have the sensor wired incorrectly, which would explain the issues described below. Thanks!

    Howdy. I have a standalone conversion with a 2008 Cobalt 2.4L in a VW Bus and I need help with the clutch position relearn. Basically, I have a clutch position sensor set up using a modified GM TPS attached to the clutch pedal. When I initially installed it, the ECU immediately learned the "in" and "out" positions. Unfortunately, I had the wiring wrong and now "in" is 0 and clutch "out" is 100 (those aren't the exact numbers but you get the idea). I have fixed the polarity on the sensor and my raw clutch position number shows that it is working properly, but I can't get the ECU to abandon the old numbers and relearn the correct position.

    I've tried the "Clutch In Position Learn" button about 100 times in multiple configurations and it doesn't seem to make any difference. I have the E37 ECU. Any ideas how I can get it to forget the current clutch position programming and relearn the new settings? Thanks!
    Last edited by Dynamite_Goat; 06-12-2015 at 11:19 AM.

  2. #2
    Potential Tuner
    Join Date
    Feb 2014
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    6
    This may help. Here's the clutch "out" position:



    Here's the clutch "in" position:



    Note the Raw values and where the ECU thinks the position is. With the raw value at 70%, the ECU thinks its at 0%. When the raw value is at 5%, the ECU thinks its at 100%. Any ideas on how to correct this?
    Last edited by Dynamite_Goat; 06-12-2015 at 10:31 AM.

  3. #3
    There must not be a larhe number of us that try to hook the clutch position switch up in a swap. I have the switch in place, but I can't find the "CLUTCH LEARN" button. I may be in the VCM Control section, Transmssion. I'm going back to the shop to see if I can find it. :-(

  4. #4
    Quote Originally Posted by sprinto7 View Post
    There must not be a large number of us that try to hook the clutch position switch up in a swap. I have the switch in place, but I can't find the "CLUTCH LEARN" button. I may be in the VCM Control section, Transmssion. I'm going back to the shop to see if I can find it. :-(
    OK, I got the Clutch pedal learn button to activate, but I haven't got the switch to learn correctly. I've never seen one of these "switches" in the native state. Mine is from a 2015 Chevy Cruze, and mine is being used with a Trax engine and a and a T5 transmission. The switch itself is operated by a manual linkage incorporating two levers to get the switch to travel some what the same rotation I image the original switch rotates.
    I get 3 separate types of failures. Fail high, fail low, or fail in motion. I will go to an independent shop tomorrow to see it they can help me under stand how they use the Teck II to make the adjustment.

  5. #5
    Quote Originally Posted by sprinto7 View Post
    OK, I got the Clutch pedal learn button to activate, but I haven't got the switch to learn correctly. I've never seen one of these "switches" in the native state. Mine is from a 2015 Chevy Cruze, and mine is being used with a Trax engine and a and a T5 transmission. The switch itself is operated by a manual linkage incorporating two levers to get the switch to travel some what the same rotation I image the original switch rotates.
    I get 3 separate types of failures. Fail high, fail low, or fail in motion. I will go to an independent shop tomorrow to see it they can help me under stand how they use the Teck II to make the adjustment.
    OK, I got my switch to "learn" and operate correctly. My switch is attached to an E78, but the setup is with a RWD Trax 1.4 turbo engine and an inline T5 transmission so NOTHING is standard. I broke the first switch by having too much travel on the switch lever. The second switch needed less travel than I thought it would, actually around 40 degrees or less. Once the travel was centered on that travel, I just held the pedal on the floor, held the Clutch pedal learn button down till it changed color, turned the ignition switch off, let pedale up, turned ignition switch back on and logged. The switch shows passed, values go up and down. Pedal shows pressed/up. All appears to be good.