But what is the current expected of the signal?[QUOTE/]
There is only one wire to the solenoid. it is the only one that powers the solenoid. The computer varies the on-off cycle between 5% and 95%, depending on what info it gets from other sensors in the car. Factory Service manual for the car says it operates at 50Hz with a pulse wave modulation. The 50hz frequency is constant(.02 second cycle). The Pulse Width Modulation controls the ratio of on to off. I don't need a variable control. I really would just like to get an output of 5%.
Will a voltmeter tell me what voltage amount is being pulsed? or will the voltage reading show lower because of the on-off action repeating every .02 seconds? There is a mode to lock it fully on(95% duty ratio) If I put it in that mode, and then measure the voltage going to the solenoid, will that tell me what voltage it's sending the signal at? would it then be
(signal voltage X .95= measured voltage)?
I am really good with cars and straight forward type electronics. It is just this PWM and duty cycle stuff I am confused about