5 volt constant to sensors

[daniel van fossen]

Hello, I've been trouble shooting the infamous red lightning bolt while I have a p0129 code. New map sensor and still issues. With the truck off I checked multiple sensors wiring on the front and was still getting 5 volts except for the crank sensor which had nothing. Possibly the crank sensor bad and causing incorrect voltage to other sensors? How do I test that sensor? Thanks.

 

[daniel van fossen]

Update-problem is fixed for now at least. I unplugged every harness from the pcm and left unhooked for probably 20 minutes. Applied dielectic grease to them and reconnected. Made sure they were in firm and truck started and runs perfect now. I'm thinking of having the pcm checked out though as this is the 6th TB in 2 years.