ECU & Throttle Position?
ECU & Throttle Position?
Hey Guys.
I'm trying to get data from the wiring harness/ECU to tell me what position the throttle is in.
I'm trying to log data onto a TraqMate for data acquisition at a racetrack.
I can get RPM from a tach-signal cable.
I can get BRAKE from the brake light cable.
I'm trying to get THROTTLE position.
Since this is a fly-by-wire throttle, the data has to be there somewhere....
Does anyone with a shop manual have any idea?
Thanks.
Nick.
I'm trying to get data from the wiring harness/ECU to tell me what position the throttle is in.
I'm trying to log data onto a TraqMate for data acquisition at a racetrack.
I can get RPM from a tach-signal cable.
I can get BRAKE from the brake light cable.
I'm trying to get THROTTLE position.
Since this is a fly-by-wire throttle, the data has to be there somewhere....
Does anyone with a shop manual have any idea?
Thanks.
Nick.
Re: ECU & Throttle Position?
Throttle position is electronic and recorded in the ECU as "Throttle Position Angle(%)" this can be read by OBD2 reader. Not sure how to get it to traqmate though
Re: ECU & Throttle Position?
Hy
Its gona be a signal like most car sensors, 0-5 Volts.
Its gona be a signal like most car sensors, 0-5 Volts.
Re: ECU & Throttle Position?
So, nobody has any idea how to get the throttle position as a 5v signal?
(ODB is not a good solution, as that often does not update quickly enough.)
(ODB is not a good solution, as that often does not update quickly enough.)
Re: ECU & Throttle Position?
[quote="Nicholas"]
So, nobody has any idea how to get the throttle position as a 5v signal?
(ODB is not a good solution, as that often does not update quickly enough.)
[/quote]
You can read the accelerator pedal position if that helps. I don't have the ECU pinouts with me (I'm away till the weekend). But there are two sensors in the accelerator - one where voltage increases with pedal travel and one where voltage decreases. The ECU compares the rate of change of the two and drops a P1239 if they don't correlate, so you can't load the sensor with too much impedance.
So, nobody has any idea how to get the throttle position as a 5v signal?
(ODB is not a good solution, as that often does not update quickly enough.)
[/quote]
You can read the accelerator pedal position if that helps. I don't have the ECU pinouts with me (I'm away till the weekend). But there are two sensors in the accelerator - one where voltage increases with pedal travel and one where voltage decreases. The ECU compares the rate of change of the two and drops a P1239 if they don't correlate, so you can't load the sensor with too much impedance.
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