It is the connector in the first few pictures that says "all" and it goes into the black connector on the PCM. I checked and this is the pin that it is on on the PCM connectorView attachment 118042
Definitely not but it still does not seem to have anything to connect to. It is a bullet type connector and the inside is fairly clean so I assume its connection is somewhere . The diagram listed it as an 18g pink and grey wire but it is plain black
Maybe when you tried grounding that wire you shorted something out.Yup checked M19, M21, M27, with a multimeter they are all good. J17 checked out fine with a multimeter continuity check. I did try grounding the loose wire and somehow I suspect that is what caused the issue in the first place.