Toyota Multiplex Diagnostics - Basic Overview Video

Dave from Selden Educator Posted   Latest  
Demonstration
Network Communications
2017 Toyota Camry LE 2.5L (2AR-FE) 6-spd (U760E)—4T1BF1FK3HU412256
U0073 - Control Module Communication Bus "A" Off
U0129 - Lost Communication With Brake System Control Module "A"
U0100 - Lost Communication With ECM/PCM "A"
U0131 - Lost Communication With Power Steering Control Module
U0142 - Lost Communication With Body Control Module "B"
U0101 - Lost Communication with TCM

Hello everyone,

I'm Dave …, an instructor with … on Long Island, NY, and a part time instructor with WorldPac Technical Institute - WTI. I recently worked with the team at Diagnostic Network on a few informational videos and I'm here to introduce the first one covering Network Diagnostics utilizing the Toyota Techstream, TIS and the Picoscope.

Network Communications

As we all are aware, network communications is a critical part of making a modern day vehicle operate properly and safely. With a single malfunction on the network, multiple systems could be affected. I'll be covering a basic overview of the Toyota platform on this 2017 Camry. I mentioned earlier that we'll be using the Techstream and want to make sure that everyone knows that although we're using the dealer-level tool, you, as a service industry professionals have the ability to run the same software on your own device by subscribing to Techstream and utilizing Techstream Lite or a supported J-2534 interface. The powerful part to this tool is that it contains the diagnostics, service information, training, and reprogramming functions at a very low cost. If your shop is servicing Toyota, Lexus or Scion vehicles, I high recommend looking into acquiring a Techstream system by visiting techinfo​.​toyota​.​com. In the video you'll see reference to Quick Training Guides (QTG) within TIS which, in my opinion are invaluable. Here is an example of the type of material one would find as they accessed that information. You'll also see us testing pins 6 & 14 of can bus with the Picoscope. Here are a couple of screenshots showing a normal signal and a shorted CAN HI to ground as demonstrated in the video.

Toyota Network Communications & Diagnostics Video

We hope you enjoy this video and I look forward to creating more content to support to Diagnostic Network. If you have any questions, please let me know.

I'd like to thank Diagnostic Network for helping me produce this video. If you have suggestions for future topics either email or post a new message on DN using Diagnostic Network as the topic.

Thanks,

Dave

+26

Ray from North York

 

Diagnostician
 

Thanks Dave for the info and the link!

Ray

+2

Dave from Selden

 

Educator
 

Thanks, Ray- I hope it was helpful. More to come!

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Brin from Melbourne

 

Diagnostician
 

Impressive production quality, well thought out and very informative. Thank you for sharing. 

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Dave from Selden

 

Educator
 

Thanks, Brin- This is the first in a series of videos we are working on. Any ideas for other content you might like to see?

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Jim from Southampton

 

Mobile Technician
 

I didn't want to "Let the Cat out of the Bag" on this Awesome Video. I was asked to go up to Long Island, NY as a consultant for this training video, I mentioned in a reply to a post how impressed I was in Scott Brown's effort to make this video the highest quality it could be. I've had the opportunity to produce and watch other training videos, But what I witnessed first hand on this project was the amount of detail that was taken by the production crew in the proper light , sound quality and training material.

Scott was involved in every aspect of this training video and had GREAT suggestions to make it the quality it turned out to be. I really have to commend Dave Macholz on his Professionalism through the entire day............ YES, it took an entire day for that 4:41 minutes of filming. Dave was determined to get every little detail correct.

Just like a lot of others, I didn't know what to expect with this newly formed Diagnostic Network group, But knowing Scott Brown and his ability and desire to improve our industry, I was willing to sign up as a founding member. What I can now say, if this project is any indication of what will be coming, I'm ready to write a check for future membership.

+6

Rudy from Montebello

 

Technician
 

First off,Woah,look at the mustache on this guy!! Thats new!!

Second, fantastic work. Looking forward to more.

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William from Ashland

 

Diagnostician
 

Great job! Everything nice and clear, good audio and bright visuals. This is what a good training video should be like!

+1

Jim from Southampton

 

Mobile Technician
 

I agree with you 100%, I witness how long it took to make sure the Training Video the quality it is. Believe me, There were A LOT of takes on each segment. I have VERY GOOD feelings about what The Diagnostic Network will become. These pictures attached show some of the "Behind the Scenes" work that went on.

+3

Scott from Claremont

 

Manager
 

Nice pictures, way to include one of my “good side” 🤓

+1

Jim from Frederick

 

Curriculum Developer
 

Nicely done, Dave. I really like the way Toyota presents this topic. Scope testing is valuable. So is resistance testing. Thinking about how specific failures will impact the pattern, makes verification and isolation using the DVOM with confidence an easy task. I have a whole series of photos of resistance testing with and without a bus shorted to ground. That chart in the QTG611E page above shows exactly why skipping steps is ill advised. 

I hope one of the videos will be of an issue on a SUB bus and the impacts on the test screen. Also the impacts of certain LIN faults on the CAN Bus Check test. 

+3

Dave from Selden

 

Educator
 

Jim, Thank you! I have been fortunate enough to work with Toyota very closely with the Toyota T-TEN program here at Suffolk and the material covered here is just a small part of what we cover with our T-TEN students.

Toyota really goes above and beyond to make this information available to the independent repair sector at a very affordable price-point. When I teach classes for the independent shops I will often ask them why they don't utilize factory resources. The typical answer is that the added expense takes away from the profit on the job. In most instances if the technician has the access to the information and has an idea of where to look to find the answers, diagnostics become a whole lot faster and in-turn, more profitable.

+4

James from Pike

 

Owner/Technician
 

Thanks for the video and info, the timing couldn't have been better.

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Jim from Southampton

 

Mobile Technician
 

Hey James, Just wanted to commend you and your crew for owning a FIRST CLASS automotive repair business, I live right down the street in Southampton and pass your location about 3 times a week, I have heard NOTHING but good reviews from some of your clients.

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Dusty from Austin

   

Instructor
   

This is a table I made based off the QT611E, to allow students or techs to make measurements and compare against the chart. I wanted to share to expand on this topic, I always liked this course's layout for resistance testing CAN. Of course in a spreadsheet it has its nice colors etc. 

(edit) Couldn't post the table or the file. Here is the link:

docs​.​google​.​com/document/d/1OX…

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