re-learning ecm? - Toyota Yaris Forums

CTScott · 06-13-2013, 02:06 PM

The ECM can be made to re-learn the short term fuel trims, by simply disconnecting the negative battery terminal for a couple of minutes. As far as re-learning shifting patterns relative to your driving style - That requires resetting the automatic transmission control within the ECM via the Toyota TechStream tool. I did that on my 09 about two weeks after I installed my Blitz Supercharger and noticed that once I did so the tranny shift points seemed better relative to the extra boost from the S/C.

caineroad · 07-17-2013, 10:30 PM

Quote:

Originally Posted by CTScott

The ECM can be made to re-learn the short term fuel trims, by simply disconnecting the negative battery terminal for a couple of minutes. As far as re-learning shifting patterns relative to your driving style - That requires resetting the automatic transmission control within the ECM via the Toyota TechStream tool. I did that on my 09 about two weeks after I installed my Blitz Supercharger and noticed that once I did so the tranny shift points seemed better relative to the extra boost from the S/C.

Can we use the same tool to create a 'sport mode' type of thing, where it will keeps the rev high?

CTScott · 07-17-2013, 11:48 PM

Quote:

Originally Posted by caineroad

Can we use the same tool to create a 'sport mode' type of thing, where it will keeps the rev high?

To some extent yes. If you reset the ECM's tranny control and then drive it like you stole it the ECM should learn that shifting behavior.

06-13-2013, 02:06 PM	#1
CTScott ULTIMATE View User's Garage Drives: 09 5dr LB, 2x 08 3dr LB Join Date: Oct 2008 Location: USA, CT Posts: 13,460	The ECM can be made to re-learn the short term fuel trims, by simply disconnecting the negative battery terminal for a couple of minutes. As far as re-learning shifting patterns relative to your driving style - That requires resetting the automatic transmission control within the ECM via the Toyota TechStream tool. I did that on my 09 about two weeks after I installed my Blitz Supercharger and noticed that once I did so the tranny shift points seemed better relative to the extra boost from the S/C. __________________

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