[haroldina]

The sensors are hall effect, so they need power to get a signal out of them. You could back probe the connectors with everything hooked up and check between the signal and ground while cranking. I would guess the middle pin is signal, but I'm not sure.

When I had this issue on my car, it ended up being a broken wire under one of the connector boots on the harness side. Pull back the boots and check for that before getting to terribly fancy with the troubleshooting.