WTF is this sensor?

Aaron Staub

New member
Still getting to know my truck and any time I find a butt connector in a wiring connection I get a few heebie-jeebies. There is a single wire running from this sensor on the driver side where it then disappears into the factory harness right below the MAP sensor. Given the location, I was figuring it to be a coolant temp sensor, but the wiring diagram suggests that should be a two-wire hookup. The wire coming off of the weatherpack is black, but looks like a third-party wire, and it transitions to dark green at the butt connector until it vanishes into the harness.

Apologies for the garbage lighting, but I figured this was a unique enough component that a crap iPotato pic would work.

 

CC801

Donating Member
Re: WTF is this sensor?

Its a second coolant temp sensor. One is for the the pcm, the other is for the gauge.
 
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