RPM signal [Archive] - Mitsubishi Lancer Register Forum

RPM signal

nads1978
27-02-2011, 17:27
I believe the RPM signal from the ECU to Tacho, is a scaled voltage.
DOes anyone know the scalings? E.G. "x" voltage = "y" RPM on the gauge?

sbn1979
27-02-2011, 17:46
think your asking on the wrong site mate think you should ask the geeks

nads1978
27-02-2011, 17:58
Rodger that.

Grant620
27-02-2011, 23:14
It's not a voltage, it's a pulsed signal.

nads1978
27-02-2011, 23:49
If I want to read that signal can I put my Fluke to the tacho pin and sensor-ground/chassis-ground and set it xx setting to read it (peak to peak)? or would I have to use a scope?

Sir Marcus
28-02-2011, 14:21
Scopemeter pal :smthumbup

nads1978
28-02-2011, 14:22
Okay, ta.