MY wiring mess

[dhirocz]

Do you know which sensor? Is it intermittent or a constant problem?

Find the pinout diagram at the ecm and at the connector pigtail and start doing resistance checks. Most DVOM's measure ohms. I would unplug the connector from the ecm, don't back probe it.

If intermittent, you will need to try to replicate the conditions when the problem occurs while testing, which can sometimes be a PITA. Most often for me, this is the wiggle test...

Also make sure your ground integrity is good, etc...

Lots of videos on YouTube.

On another note, last time my turbo did that, was because the actuator couldn't move...VG ring was broken in pieces.