Ok I have the MX which I believe the same as the LX but without the Ford modules. This baby gets 50 PID/sec with a CAN-bus ECU.
I can answer this one. The ECU has a whole bunch of faults it can throw and when the conditions are met it goes to a table and if there's a code there the code is thrown according to the code's data (for example it could set a fault but not set the CEL or even make it blink). I've simply removed the undesired faults from this table so the underlying behavior is not actually different at all. Note that there a bunch of faults in this table that are set like that. the ECU can throw some faults that Toyota has disabled so disabling faults like this is intended behavior in the ECU.We do know that the MIL for these error conditions is removed in our hacked ECU's - which is a great thing because it gives us a usefully functional CEL. I don't know the mechanism of how this is done because I don't know the underlying logic so I don't know if the error condition checking and setting is deleted entirely or just the MIL setting. Beyond this, we do not know what consequences these error conditions may have for engine control. It's been theorized that without transmission input the engine defaults to a engine-stand dyno test mode that is not affected by transmission status however we also know that in our running cars the presence or absence of a speed signal from the transmission does have an effect on the throttle behavior as can the selection of N versus D for shifter status, so the question is not straightforward to answer.
As far as I can tell, "Pedal Position D" and "Pedal Position E" are the actual outputs from the pedal. They should show the same data with a different scale. "Throttle position (manifold)" is the one I usually use for throttle blade position. There are a couple of other "throttle position" PID's, and from what I have seen they seem to track with the "manifold" PID, so I don't usually bother with themI'll try to get you the best data that I can.
When you say "pedal" which of the pedal PIDs do you mean? The thing that behaves the most like a pedal is the one labeled throttle manifold and goes from about 15% to 81% in range. But there's also those other pedals with behavior that I don't understand.
Is the test to be done in fixed gear? Gear 2 or 3 would work, any preference? I'll try to do both, for comparison.
I'll also check what other other mode 21 Toyota PIDs may be available related to the pedal and throttle.
We'll see this better when I have logs, but from looking at the road test video, for pedal D and pedal EAs far as I can tell, "Pedal Position D" and "Pedal Position E" are the actual outputs from the pedal. They should show the same data with a different scale. "Throttle position (manifold)" is the one I usually use for throttle blade position. There are a couple of other "throttle position" PID's, and from what I have seen they seem to track with the "manifold" PID, so I don't usually bother with them
I made some logs of acceleration runs trying to hold the pedal as much as possible at a fixed position for each run. The raw log file is attached. I did all these runs in 2nd gear. I chose a fixed gear to make it possible to sweep as much as possible of the rpm range on each run.Do you have a good way to log those to text instead?