Depending on where the position sensors are set, the maximum value should be between 80% and 100% at full throttle, and less than 20% at idle. The ECM will learn the effective range of the sensors (there are 4 on the V8 tundra 2 accell pos, and 2 butterfly pos). Each side of the assembly has two sensors that are reverse of one another. IE - the accelerator position sensor - as one sensors voltage gets closer to 5, the other one gets closer to 0. The ECM compares these numbers as a fail safe. if either number is out of range it will deactivate the drive by wire throttle motor clutch. Same goes for the butterfly side - two sensors, constant ECM feedback. because of this the actual range is not going to be 0-100%. For example - my truck is 13% completely closed, and idles at 15.1% - wide open is 82%. If you watch the butterfly with the engine off, at 80% the butterfly is completely wide open. If you measure the output of the throttle position sensor (the motor driven side), you can watch what is happening at the butterfly relative to what your foot is doing.
If you compare them you will see that even though the sensor is reading 8x%, the butterfly opening will be the same as what you measured at wide open when you have your foot to the floor. Most of the power reduction in these trucks is done through timing retard as much as 40 degrees.
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2000 4x4 LTD AC Sunfire Red - Sold w/ 200K
2005 4x4 LTD AC Phantom grey w/ dark grey - Sold w/ 20K
Alpine CDA-9835, W/ KCA-420i, Focal 165KP front, Focal 165V Rear speakers. powered by 2 MMats SQ2150 amps. Alpine MRD-M501 powering a JL Stealthbox with Infinity Perfect 10D VQ
Sound deadened everything with Cascade VB2HD, and Dynamat Extreme
2005 G35 Sedan 6MT - Returned due to paint work on a 'new' car.
2006 G35 Sedan 6MT - all stock. Where do I hook up the trailer and where's the bass?
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