Troubleshooting a Shorted 5v Reference Circuit (Chevy Silverado)

Troubleshooting a Shorted 5v Reference Circuit (Chevy Silverado)

This truck has more than one 5v regulator and we are chasing a problem on the REF 2 circuit (P0651). It is also setting false random misfire (P0300) and crank sensor (P0335) trouble codes.

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Related videos:
How to check the 5v reference circuit for a short to ground (Cadillac)
https://youtu.be/uyncVz_HAtA
No Start from a shorted MAP sensor (Honda, Acura)
https://youtu.be/za13UnpbH7E

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ScannerDanner says:

Don't forget about the merch sales https://teespring.com/stores/scannerdanner-2 (all proceeds are being donated to charity).
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Big Dog50001 Automotive says:

Awesome find Paul!

Jack Johnson says:

Not only is Mr. Danner a super teacher, he's most tactful as well. Notice how in the midst of explaining a truly complex case, he artfully slips in the HVAC option ?(53:34) – just on the off chance that this is too much for us. And of course all the tools already gathered can work back. Not sure about the diagnostic scanners though.

ADVANCED LEVEL AUTO says:

Love it! Thanks Paul!

Cody’s Auto Diagnostics says:

Your logic to go under the hood due to the heat and probable issues is smart Paul. Looking for contacts points is also huge. Always great videos Paul!

Ozzstar says:

Nice job finding the initial problem and explaining what was going on. Nice job with the editing Caleb.

AkshonClips says:

“Kick Me”. LOL. Only on a brother can you get away with that!

canuckguy worried says:

You need that look on your face when you found it on a T-Shirt!!

canuckguy worried says:

Stick a piece of rubber hose that is snug on to that stud…it will keep the metal threads from punching through that harness again…

ROBERTHALL says:

Great video as always and I bet just about anything at all that harness ended up like that BC someone climbed up on the front of that truck while working on it or checking the oil or something like that and they put their hand/bodyweight on it to hold themself up while doing whatever it was they were doing bc there's no way on that new of truck it should have worn though just from engine movement

D Sherm says:

ANOTHER FANTASTIC JOB! NOW SEND ME A FREE SHIRT CUZ IM POOR

Marty Murphy says:

Awesome video showing different results.
Thanks, Danner's!

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