Quote:
Originally Posted by MRS-Colin
Hi from the east!
Throttle is NOT CAN controlled. There are differential signal wires that go from the throttle pedal to the ECU. The ECU then broadcasts the position calculated by those differential signals.
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For sure you can't control throttle by trying to replicate the throttle pedal, but for example on Honda FI ECUs -
powertrain engineers can control throttle over CAN via a service tool or CANalyzer during development.
They can access the internal parameters through proprietary diagnostic PIDs and fiddle about. There's likely a similar way with Toyota, but of course, there's no way we'd ever figure it out without one of them blabbing.