CAN-BUS No Communication Diagnostic | Resistance, Voltage, Short Circuit, Pin to Pin Test

Automotive Diagnosis: Cars Repair &Training Guides

Подписаться 49 тыс.

Просмотров 6 тыс.

50% 1

In this video I explain the CAN-BUS diagnosis step by step. I have a car for this video that has a major CAN-BUS problem, so my scan tool cannot communicate with multiple control units (Engine, Transmission, ABS, A/C, ..), so I explain how to start the diagnosis on the CAN-BUS from the more accessible points to find the problem. I explain how to test the CAN-BUS resistance, how to test the CAN-BUS voltage, how to test it for the short to ground, then how to narrow it down to isolate the problem area for finding it easier. I also explain the CAN-BUS wiring diagram.
You might be interested to watch the following videos too:
CAN-BUS Explained | Everything You Need to Know About CAN-BUS | CAN-Bus Diagnostics & How It Works
• CAN-BUS Explained | Ev...
CAN-BUS Explained | B-CAN Diagnosis | Test B-CAN with Multimeter & Oscilloscope
• CAN-BUS Explained | B-...
LIN Bus Explained | Everything You Need to Know about LIN BUS | Local Interconnect Network
• LIN Bus Explained | Ev...
K-Line vs LIN-Bus | K-Line Explained:
• K-Line vs LIN-Bus | K-...
Join the channel for more videos and more support:
/ @automotivediagnosis
Please follow us on the following social media too:
/ autodiag001
/ automotivediagnosis
fix-it-first.com
#canbus
#network #bcm #instrumentcluster #oscilloscope
Disclaimer:
Any information contained in this video is just the understanding of “Automotive Diagnosis: Cars Repair & Training Guides” and it is not an official guide or reference, so everything provided in this video is just a share of our experience and understanding and they are provided as a courtesy for your reference only. So, if you are using any part of this video, use the information at your own risk. We highly advise you to check the manufacturer owner’s manual before performing any act of removal, diagnosis, inspection, or repair on your car to know about what you are authorized to do on your car, what the correct and legal procedure is and what risks might be involved, also viewers are strongly advised to consult a licensed person before any sort of inspection or repair. Due to the factors beyond the control of “Automotive Diagnosis: Cars Repair & Training Guides”, we cannot guarantee against improper use of information or tools or systems, or the procedure provided. “Automotive Diagnosis: Cars Repair & Training Guides” disclaims any damage, injury or loss caused by your decision to follow the steps provided in this video.

Авто/Мото

Опубликовано:

21 май 2024

Ссылка:

Скачать:

Готовим ссылку...

Добавить в:

Мой плейлист

Посмотреть позже

Комментарии : 48

@AutomotiveDiagnosis 2 месяца назад

You might be interested in watching the following video too: CAN-BUS Explained | Everything You Need to Know About CAN-BUS | CAN-Bus Diagnostics & How It Works ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-bvyHx-C2Xfs.html

@user-rc2yw1bc9f 2 месяца назад

I love every single diagnostic video in this channel, thanks

@AutomotiveDiagnosis 2 месяца назад

Thanks for watching the videos and supporting us.

@sollykhan2385 29 дней назад

Thank you for posting this fantastic video, i followed it all the way through, as i have a very problematic car here to solve, so now i will get a 'Can' (of cola) and take the 'Bus' HOME 🙂👍

@arthurfricchione8119 2 месяца назад

Terrific video and explanation . Thank you for sharing 👍

@AutomotiveDiagnosis 2 месяца назад

Glad you liked it

@Alfon-hz8nw Месяц назад

Absolutely brilliant

@AutomotiveDiagnosis Месяц назад

I’m glad you liked it

@jeevanram7148 Месяц назад

Good information ❤❤❤

@AutomotiveDiagnosis Месяц назад

I’m glad you liked it

@cartech5015 День назад

Excellent

@AutomotiveDiagnosis День назад

🙏🙏

@alrifainidal 2 месяца назад

Thanks for the time to show us the diagnostic CAN BUS

@AutomotiveDiagnosis 2 месяца назад

Thanks for watching

@alrifainidal 2 месяца назад

@@AutomotiveDiagnosis CAN network is my lovely diagnostic it gives a challenge to diag. I hope I can see more videos like this

@nadeeramaduranga5314 2 месяца назад

This is impressive. Today i changed the gateway module of vw tiguan tsi which is not communicate with all the modules except instrument cluster.

@AutomotiveDiagnosis 2 месяца назад

Thanks a lot for sharing your experience.

@amarabdelli487 2 месяца назад

Great video thanks for sharing

@AutomotiveDiagnosis 2 месяца назад

Thanks for your support

@rjeromej8149 Месяц назад

Hmmm, decent test plan, but it is 2024; invest in some tools and equipment, e.g., Breakout Test Lead, OBDII Breakout Box, Oscilloscope… I have seen too many misdiagnoses when individuals use the basic test leads that come with the Multimeters. I had a GM Tech trying to convince me that a VVT Solenoid was bad based on the resistance he performed. The test lead probes were unstable in the Connector Cavity when demonstrating the resistance test. The readings fluctuated, so he was under the impression the solenoid was bad until I used some of my breakout test leads and scope in resistance mode, demonstrated the resistance was within the desired range, and corrected the engine oil level, which resolved the concern.

@King21114 2 месяца назад

Thank you so much for this video

@AutomotiveDiagnosis 2 месяца назад

Thanks for visiting the channel my friend

@meassavuth4649 Месяц назад

Thanks

@AutomotiveDiagnosis Месяц назад

👍👍

@rodvan-zeller6360 2 месяца назад

Another excellent video. At 2:27 why does the diagram show PCM and ECM usually they are the same thing.

@AutomotiveDiagnosis 2 месяца назад

Hi my friend. Normally ECM refers to Engine Control Module only, and PCM refers to ECM+TCM. So wiring diagram technically covers both cars with automatic transmission (that we must look at PCM on the diagram) and those cars with manual transmission (that we must look at ECM on diagram).

@rodvan-zeller6360 2 месяца назад

@@AutomotiveDiagnosis Thank you for the reply

@mwangigateiyu1570 Месяц назад

Good information,, can you do a pull down and pull up circuit

@AutomotiveDiagnosis Месяц назад

Sure my friend

@mwangigateiyu1570 Месяц назад

@AutomotiveDiagnosis i wish you could it

@donfu2795 2 месяца назад

Thanks for the video. Good diagnostics. Do you ever use a scope for CAN-BUS diagnostics?

@AutomotiveDiagnosis 2 месяца назад

Yes, on many cases we have to use the scope to diagnose the CAN-BUS as resistance and voltage inspection might not be helpful. You can watch the following videos in our channel that I used the scope for CAN-BUS diagnostic: ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-fVy_EXkMKMg.htmlsi=Kr8HT9-nc5RYE4ak ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-GDsGjhNG_ys.htmlsi=dcumc8CY5dPMYCRH

@donfu2795 2 месяца назад

@@AutomotiveDiagnosis thanks for this. What I am wondering: in both cases (using a DVOM or a scope), would the outcome be the same: locate a failing module or issue in wiring and then either replace/rebuild the module or fix the wiring. If that is the case, why bother with a scope, if a DVOM will be able to locate a failing module or wiring issue. I am not trying to be contradictory, just trying to learn. Thanks again for the videos.

@manoramachandran9192 2 месяца назад

❤❤❤❤

@AutomotiveDiagnosis 2 месяца назад

Thanks for watching

@Dean-ob7fg 2 месяца назад

🙏🙏🙏

@AutomotiveDiagnosis 2 месяца назад

Thanks for watching

@miroslavmarsalek243 Месяц назад

What program do you use for electrical diagrams?

@AutomotiveDiagnosis Месяц назад

For this one I used KIA GDS which is the OEM scan tool which comes with all diagrams, but we have some wiring diagrams in PDF and will provide them to everyone very soon.

@miroslavmarsalek243 Месяц назад

Super thx.

@fivefortyeye540i 2 месяца назад

So umm... How did you repair that wire? That would have been interesting to see being it's a data wire

@AutomotiveDiagnosis 2 месяца назад

Hi there, luckily there was only a minor issue on the wiring insulation not on the wire itself, so very easy to fix. But in case of having any damage on the wiring on the CAN-Bus, I never do soldering, as I do on the normal wiring, I rather to replace the wire between two ends.