Question on resetting the adaptives.
Question on resetting the adaptives.
I tried posting this question on another forum I thought would have more technical knowledge first... no luck.
I have a question for someone that really knows these cars, how do the "adaptives" work for these VQ's? I know I can "reset" the computer, but what is being reset. I know the tables are fixed but what is being reset?
I have other vehicles I work on and I know more about how the ECU works on them, I'm trying to learn these VQ's now.
Does anyone have a list of the adaptives?
Is the computer "learning" all the time or does the engine have to be at normal operating temperature first?
Does the transmission also have it's own set of adaptives or no?
How often are the adaptives recalculated?
Are there different adaptives for the two modes Drive and DriveSport?
Doing a search on here for "adaptives" yeilds one single result and that happened to be a guy quoting a technician. Am I using the wrong word here? We talk all the time about adaptives when talking about tuning on my other forums (domestic). Heck, some tuners even have a seperate function just to reset the TCM adaptives without having to reset the ECU's (this allows for better shifting responses just in case you've been driving around like grandma for the last few hundred miles). Does anybody speak this language?
I have a question for someone that really knows these cars, how do the "adaptives" work for these VQ's? I know I can "reset" the computer, but what is being reset. I know the tables are fixed but what is being reset?
I have other vehicles I work on and I know more about how the ECU works on them, I'm trying to learn these VQ's now.
Does anyone have a list of the adaptives?
Is the computer "learning" all the time or does the engine have to be at normal operating temperature first?
Does the transmission also have it's own set of adaptives or no?
How often are the adaptives recalculated?
Are there different adaptives for the two modes Drive and DriveSport?
Doing a search on here for "adaptives" yeilds one single result and that happened to be a guy quoting a technician. Am I using the wrong word here? We talk all the time about adaptives when talking about tuning on my other forums (domestic). Heck, some tuners even have a seperate function just to reset the TCM adaptives without having to reset the ECU's (this allows for better shifting responses just in case you've been driving around like grandma for the last few hundred miles). Does anybody speak this language?
The APPS is set, it actually has two signals for redundancy (safety). There is no learning or adjusting of the APPS or throttle blade. There is however an awesome paragraph I'll repost from the service manual.
I was originally wondering about the transmission adaptives because I don't know how they work.
Here is a list of adaptives (I think)-
1/1 LTFT
2/1 LTFT
1/1 STFT
2/1 STFT
ST Knock Retard*
LT Knock Retard*
*always changing, don't know if it's considered an "adaptive"
The accelerator pedal position sensor is installed on the upper end of the accelerator pedal assembly. The sensor detects the accelerator position and sends a signal to the ECM.
Accelerator pedal position sensor has two sensors. These sensors are a kind of potentiometers which transform the accelerator pedal position into output voltage, and emit the voltage signal to the ECM. In addition, these sensors detect the opening and closing speed of the accelerator pedal and feed the voltage signals to the ECM. The ECM judges the current opening angle of the accelerator pedal from these signals and controls the throttle control motor based on these signals.
Idle position of the accelerator pedal is determined by the ECM receiving the signal from the accelerator pedal position sensor. The ECM uses this signal for the engine operation such as fuel cut.
Accelerator pedal position sensor has two sensors. These sensors are a kind of potentiometers which transform the accelerator pedal position into output voltage, and emit the voltage signal to the ECM. In addition, these sensors detect the opening and closing speed of the accelerator pedal and feed the voltage signals to the ECM. The ECM judges the current opening angle of the accelerator pedal from these signals and controls the throttle control motor based on these signals.
Idle position of the accelerator pedal is determined by the ECM receiving the signal from the accelerator pedal position sensor. The ECM uses this signal for the engine operation such as fuel cut.
I was originally wondering about the transmission adaptives because I don't know how they work.
Here is a list of adaptives (I think)-
1/1 LTFT
2/1 LTFT
1/1 STFT
2/1 STFT
ST Knock Retard*
LT Knock Retard*
*always changing, don't know if it's considered an "adaptive"
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