So, if you have no power to the coil on the transistor circuit then this is either due to no crank signal or the ECM is faulty.
The only thing that gives me pause is that ECM circuits to each coil are separate circuits. So that tells me it is not getting the crank signal. Clearly it is not the sensor so we could have a circuit issue.
So, if you don't have a scope to watch the pattern, we need to get a little more info on how this happened.
What is the history on this one? Did this just start one day or has this vehicle been sitting?
We could have a tone wheel issue or a wiring issue which a scope would show that but hopefully we can get more info on this to point us in that direction.
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Tuesday, March 8th, 2022 AT 4:13 AM