Engine running (idle) EHA = hovering around 0ma if duty cycle is set at 45 to 55%
If duty cyle set a little rich (hovering at 35 to 45%) EHA current will be hovering around -3.5 to 0 ma.
If duty cycle set a little lean (hovering at 55 to 65%) EHA current will be hovering around 0 to +3.5ma.
I have never tested under acceleration, but I will assume it will be the same as above (do not quote me on this).
No steady duty cycle numbers mean no faults (with engine running)
1999 Porsche 996 Carrera Convertible
1994 420E - SOLD
1986 300E - SOLD, what a car