Originally Posted by
digitalgraham
I have looked at SECS but not in too much depth so don't know exactly how it retrieves the data
like i said, it does not retrieve the data. it takes the individual analogue signals, TPS voltage (approximately 0 to 5V) and uses an analogue to digital converter internally to convert that to throttle opening etc
whilst this will tell you if the sensor is working, it does not tell you that the ecu is reading the sensor output correctly and using it in the maps, which the datastream does.