Does anyone know where I can find out what the signal electrical values are? I have the schematics to trouble shoot the ecm but I do not know if something is a 5 volt dc level, a pulse width, a pulse train. Does anyone know where I can find this stuff out? I know the "name" of the output or input of a signal for example, VCC Standby(1), but I do not know what this is supposed to be on an oscope or a voltmeter. Thanx
Rudy

there's a site called Chevythunder.com that has alot of info regarding this.
Here's a link to that.
http://chevythunder.com/fuel%20injec...ty%20f-body%20(ecm#1227730)