The 5 volt reference circuit is like the cardiovascular system in your body, no 5v ref is equivalent of having no blood psi (YOU'RE DEAD!). But today's cars can have as many as 4 different 5v regulators, while older systems only had one. With a shorted 5v ref on a single regulator system, the engine computer will be completely dead. You will have no communication with it and it will not have spark, fuel or injection pulse. To learn more about this 5v reference circuit and what it does and how to test it, join my online classes on my website (ScannerDanner Premium). www.scannerdan...
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For more information on this topic, I have written a “field manual” called Engine Performance Diagnostics which is available at www.scannerdanner.com as an eBook or paper book.
Want even more diagnostic training? Whether you are a DIY trying to fix your own car, someone looking to become an auto technician, or a current auto technician that wants to get more into diagnostics, subscribe to ScannerDanner Premium www.scannerdan... There is a 14 day free trial.
On ScannerDanner Premium I will bring you right into my classroom at Rosedale Technical College. You will find page for page lectures taken right from my book as well as exclusive classroom type case studies. What is so special about these classroom case studies? I pull live problem vehicles directly into my classroom and we troubleshoot them in real time, using and applying the theory and testing procedures we learn during the classroom lectures. There is no better on-line training of how to troubleshoot automotive electrical and electronics systems anywhere!
Негізгі бет 2006 Cadillac DTS Shorted 5v Reference Circuit
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