Test CAN BUS With a Multimeter | Quick & Easy | CAN Bus Resistance, Voltage & Short to Ground Test

This video shows you how to test the CAN-BUS with a multimeter.

What is covered in this video:

00:42 CAN-BUS Basic
01:16 CAN-BUS total resistance test
03:30 CAN-BUS resistance check when there is open circuit in one resistance
04:17 CAN-BUS Voltage Test
05:30 CAN-BUS Short to ground test

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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.

[AutomotiveDiagnosis]

Please watch the following video for more information about CAN-BUS:

[jagathchristopher]

I am grateful for this video, It explains the diagnostics short as well.

[livvy]

Great video - I will use this information to investigate the issues on my Jaguar XK8 or eliminate worries about the CAN BUS system - Many Thanks

[reynaldoclaveria]

Thanks a lot sir you enlightened my mind. You solved my problem about can bus.you make me feel better and confident automotive technician.

[carsrepaircenter]

A perfect tutorials, Keep up the good work.

[CanBus-liky]

Vey good inf this men spend the time to Teach, He. Is the Best, I am a Tech for Gm, this is the way GM Teach you

[dogniunsergedouho]

What an amazing video!! Thank you so much

[Dean-obfg]

Very useful and straight to the point. Thanks

[chandrakantindapurkar]

Good video to watch again and again
Thanks a lot

[weiren]

very nice video, easy to understand. These days I have used a multimeter to check the voltage at the "input" of the ECU, the can H is about 2.4V, and the can L is 2.19V. seems the ecu is fucked:(

[fixitfirst]

Good work. Is there same resistance check on the body CAN as well?

[eggyburgers]

I have a reading of 0 Ohm on 6 & 14 on my Mondeo mk4. Any ideas what this means? I can’t scan codes so there is a problem.

[davidyonko]

I have a question? can a CAN high/low wire be a regular #12 stranded wire ? That’s is what is used at my work In our pile plugs just a regular #12 stranded wire . Thank you

[HerbMoore]

Is the Ford J1850 bus on pins 2 & 10 tested and diagnosed identically to CAN bus on pins 6 & 14?

[moramoy]

I got voltage readings of 2.9 v for CAN high and 1.9 for CAN low. I am checking a dodge ram 2006. What would you suggest to do next? Thank you.

[AutomotiveDiagnosis]

Check this video too:
Testing CAN-BUS with a Picoscope | Reading the CAN-BUS Waveform | CAN-BUS diagnostics with Picoscope

[wannaPreG]

Can you help name the various CAN bus line, I heard you said one is called C CAN, I have this vehicle that says vehicle communication Bus C, so can you break down the various Communication CAN,

Let say C Can included ( so so and so module ) B, A, D, E…

[guevaradelaserna]

So is there a cable only for high can bus and another one only for the low?

[jabbarjabbar]

Whate is the different between can b bus and can c bus in usa cars?

[paho_iron_phill]

hi i have 57ohm resistance is that good or to low? and my canbus voltage is weird -0.13V