Vehicle Communication Network Capturing
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- Опубліковано 10 лип 2024
- In this video, Justin explains the procedures neccessary for capturing network communications on a labscope. Justin applies simulated faults to demonstrate what a network may look like during different failure events such as shorting to battery voltage or being pulled down to ground.
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You rocked those COMMS! Great job and nice gift to the community!
Super job. Another fine example of time spent learning and testing that the customer never sees. Thanks for sharing
Thanks Corey!
Instead of using a jumper wire to do these shorting tests, use a test light its added insurance that nothing gets the smoke left out. Especially if you are experimenting on a customers car. The last thing you want to tell someone that came in for brake pads is, oh by the way you need a ECM cause I used your car as a guinea pig and fried it.. Lol
Great job Justin
Good point!
Thank you for taking the time to show that, you covered in minutes what a class would have taken hours to go over. Excellent information and just another reminder that I have to buy a breakout box.
Absolutely a perfect topic of showing patterns of shorts to ground, powers,and com lines to com lines. I see new level auto has a interest in your channel. You guys are top notch.
This is good info, especially whe you point out the class 2 star system splice pack, makes it easier to pin point who's not communicating through the network.
Any other videos that start earlier and explain some of the terminology used such as can high, fault tolerant, non fault tolerant, etc... Always willing to learn. Only thing I hate is I'm a hands on person.
Love the video, always good to see the good and the bad, in diagnostics at least
Thank you so much Justin for showing us all what these would look like. Great info. 👍👍
Kevin B.
Very important to understand how they fail ! Awesome job. Will we be seeing some of the other types as well ?
New Level Auto What did you have in mind ?
Trained by Techs Channel Flex Ray , PCI bus , Lin or any single wire Lan. Might be nice for those that havent seen it yet. CAN running in single wire mode and possibly an option to show what it looks like when a module is not fully powered up and how it affects the data line. Just a few thoughts 😁
Great idea!
@@NewLevelAuto Now I am very curious about how these faults would appear, especially when a module isn't fully powered up!
Great video. Thanx for information.
Great video hope to see more from you
Finally top notch training 👍
Nice video Justin. Thx!
Dylan Thanks for the feedback!
Nice going I love cam net work 😃😄 good work
Awesome thanks for sharing your knowledge and time sir
This was great..
Been meaning to do something similar with the can lines just to see what they do..
Thank you sir..
Now I feel safe knowing that I wont see smoke..lol
great tip !!
Exselete diagnostic amigo nice video.
Gracias amigo! Saludos
Thank you very much! And Like
Is there a reason why you did not apply power or ground to the CAN network at the break out box instead of at the PCM? That would eliminate using the wrong wire at the PCM, no?
Sweet car lol but great Job Justin
Where do you get the awesome printouts showing connectors and pinouts along with all modules and sensors?
Alldata is a great source and can be purchased short term on Alldata DIY
thanks for video how did you connected scan tool and breakout box to DLC @same time.
Thanks Ali. We used a Line SPI from Aeswave.com found here : www.aeswave.com/AES-LineSPI-SMART-BOB-p8754.html
Hi Sir,
Please one particular question.
Does the Hantek model 1008 8 ch Automotive Diagnostic Oscilloscope fits OK for measuring these types of communications signals...???
Thanks you sir.
Best regards.
Yes the Hantek is good enough to capture these signals
What happens if for what ever reason when doing the ohms resistor ck you either have more or less resistance between pin six and fourteen what would you look for?
That would depend on how high the resistance reading is.
what is the breakout box for? isn't it just as effective to back probe the dlc without spending $$ on a box ?
Dave Murdock the breakout allows for a quick easy access to the dlc without the worry of poor connection, backprobes falling out, shorting circuits, damaging the dlc pins etc. It has led lights on it showing you instant network activity as well. It's not necessary but definitely a handy tool to have.
thankyou for the info. great video by the way.
Dave I have one of these cheapo versions. So far seems to work fine. www.amazon.com/Signal-Diagnostic-Breakout-signal-diagnosis/dp/B06XD2CM5B/ref=sr_1_2?ie=UTF8&qid=1522866985&sr=8-2&keywords=dlc+breakout+box
This kit is great too. www.amazon.com/Tool-Aid-23500-Back-Probe/dp/B00G9C3RSU/ref=pd_bxgy_263_2?_encoding=UTF8&pd_rd_i=B00G9C3RSU&pd_rd_r=GEFEBJ7WF38DNFG92J3D&pd_rd_w=mdJV7&pd_rd_wg=9SAao&psc=1&refRID=GEFEBJ7WF38DNFG92J3D
Hi Justin !!...Super video !!...I'd like to do an instructional video like this for my C5 Corvette Forum members. I'm assuming you're back probing the serial data line on whichever module you want to take down for testing...C5's have the class 2 data line with the splice packs like in your GM section...how can a DIY'er troubleshoot with just a DVOM ??...I really think you can't. You definitely can't see the 0-7 volt square wave...only with a DSO...what about with a scan tool ??...and I guess it would have to be one that can communicate with all the modules !!...how do you troubleshoot with just say only a scan tool...I have a Pico-scope and a CAN test box so that wouldn't help 99.9% of forum members...I watched a video last night on how to use a scan tool but I couldn't get it to work...hooked up my Autel and removed the comb then jumpered the purple signal wire to a module but I couldn't communicate with it...any help ??....THANKS !!