My late wife's car won't start. I haven't done any troubleshooting except to watch the tachometer as I crank it. There is no rpm indicated as it cranks. What I have been able to glean from the internet is that it should be a hundred to two hundred rpm as it cranks.
So, instead of troubleshooting I am going to be a parts changer. The new sensor is $27, so it is cheap enough I can afford to do that.
Wish me luck.