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Sweet! Awesome to have a fix after all this time/work
I had heard about wiring VRS sensors backwards before, causing no start problems, but I've never run into one personally. I've always wondered how you'd go about diagnosing one, beyond physically tracing out each wire.
This job really reinforced the need to have readings from known good components/vehicles. I was just operating on the fact that I was getting a signal and the amplitude was good causing me to take the path I did. This one will definitely influence my approach to diagnosing and questioning in the future.