Yep - I found lots of unused 5V pins on the PCM. I am concerned more about the signal amplitude that would be returned back. I have not really determined what the 411 is expecting.
If it is a Hall sensor it might need a pull-up. Typical Hall sensors have an open collector output, that goes low when metal target is present. The PCM, may provide pull-up. With PCM powered check the voltage at sensor input.
Pull-up value 3.3k is typical. The open collector helps with universal applications. The Hall power can be 5V, collector pull-up to 5V, 12V or whatever, usually inder 60V. In interlock applications open collectors can be OR'd together. If bench testing, supply gnd, 5V, pull-up to output. Observe voltage w, w/o target.
