Elise[]
Data[]
ECU to IPC
400h 8 AA BB CC DD EE FF GG HH
AA ----------------> speed in km/hr
BB --------------------> unused (always 00)
CC DD --------------> tach rpms d(CCh)*256+d(DDh), 06 D2 = 1746 rpm
EE -----------> fuel level (00=empty, FF=full)
FF ----> engine coolant temperature ~= [d(XXh)*160/256 - 40] Deg Celcius
GG -----> MIL 06-on, 04-crank, 00-running, 01-shift light
HH --> unused (always 00)