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Thread: 2000 S-10 0411 Question

  1. #21
    Lifetime Member ChipsByAl's Avatar
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    Feb 2006
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    The crankshaft variation learn procedure is "required" whenever the crankshaft, crankshaft sensor, block or PCM has been replaced. This allows the PCM to be in very accurate sync with the unique characteristics of the crankshaft to sensor signal. It is for misfire diagnostics. Once a new PCM has had the learn procedure done, the code will not reset. The PCM you are using has had this procedure done already and therefore it is not setting the DTC for the procedure.
    Al
    "Trash that carb and get Injected!"

  2. #22
    Junior Member lowriders10's Avatar
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    Jun 2009
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    Quote Originally Posted by ChipsByAl View Post
    The crankshaft variation learn procedure is "required" whenever the crankshaft, crankshaft sensor, block or PCM has been replaced. This allows the PCM to be in very accurate sync with the unique characteristics of the crankshaft to sensor signal. It is for misfire diagnostics. Once a new PCM has had the learn procedure done, the code will not reset. The PCM you are using has had this procedure done already and therefore it is not setting the DTC for the procedure.
    Al
    Thanks. I haven't been able to run the crank relearn yet. Every time I've clicked on the case button, it comes up with an error something like "Error communicating try again". But that was with the old tune. I'll be starting the truck again today. I'll see if it asks again.

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