How To Read/Dissect an Engine Computer Wiring Diagram

How To Read/Dissect an Engine Computer Wiring Diagram

Reading wiring diagrams starts with an understanding of your fundamentals in what can be shared, and what cannot be shared between sensor circuits. The 5v reference and sensors ground circuits can be our guides to dissecting a wiring diagram!
The vehicle being used is a 2012 VW Jetta 2.0L TDI system

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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 https://www.scannerdanner.com/join-scannerdanner-premium.html 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!

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Due to factors beyond the control of ScannerDanner LLC, it cannot guarantee against unauthorized modifications of this information, or improper use of this information. ScannerDanner LLC assumes no liability for property damage or injury incurred as a result of any of the information contained in this video. ScannerDanner LLC recommends safe practices when working with power tools, automotive lifts, lifting tools, jack stands, electrical equipment, blunt instruments, chemicals, lubricants, or any other tools or equipment seen or implied in this video. Due to factors beyond the control of ScannerDanner LLC, no information contained in this video shall create any express or implied warranty or guarantee of any particular result. Any injury, damage or loss that may result from improper use of these tools, equipment, or the information contained in this video is the sole responsibility of the user and not ScannerDanner LLC.

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@Greg18m7 says:

Amazing amazing video thank you so much this will help me immensely with my diags

@awedakehinde9709 says:

I need all data link sir

@elitesoccerblogs4947 says:

Please do more videos like this of dissecting wiring diagrams they help out so much!

@dominikg4334 says:

What about if you place one lead of multimeter on battery + and other one on ground on sensor will that not show a voltage drop bettwen two different points on that circuit?

@joeandgod1 says:

On Scanner Danner premium, when you click on one of the chapters, is it showing me the latest video first? (at the top). Or not necessarily.

@wyattoneable says:

Classic SD!

@scottmarshall6766 says:

A damaged harness (rub through?) causing an internal harness short between the 5V reference and a 12v conductor could also do it but would require the ground be opened by the damaged harness as well. An extreme longshot, but I've seen a few cases that defy the odds through the years.
Thanks for your great content!

@Pablo_Automotive says:

Thanks Paul for another class

@stryker4374 says:

This is great! I hope to one day be at your level of knowledge!

@thebaldmechanichardatheari1124 says:

Doing a great job of explaining. You have a gift in how you make your students and public understand your methods. Very good work.

@williamgagnonroadboxservice says:

Thank you again Danner you make it look easy takes a lot of practice

@V_Vladimir_V says:

Неожиданно и интересно!

@ScannerDanner says:

Reading wiring diagrams starts with an understanding of your fundamentals in what can be shared, and what cannot be shared between sensor circuits. The 5v reference and sensors ground circuits can be our guides to dissecting a wiring diagram!

The vehicle being used is a 2012 VW Jetta 2.0L TDI system

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