5 Tips For CAN Bus Diagnostics | Mechanic Mindset

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  • เผยแพร่เมื่อ 23 พ.ค. 2024
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    These 5 diagnostic tips will quickly help you identify if you have a CAN Bus network fault. I explain the basic principles of CAN Bus operation and the steps I take to diagnose network problems. Follow these steps which include a function test, OBD diagnostics scan, basic multimeter checks and oscilloscope waveform analysis to help you diagnose CAN Bus faults fast!
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    0:00 CAN Bus Diagnostics Explained
    0:42 CAN Bus explained with network topology diagram
    2:53 How to perform a full CAN Bus function test
    5:46 How to identify CAN Bus faults with a scan tool
    9:53 How to identify CAN Bus faults with a multimeter
    12:36 How to identify CAN Bus faults with an oscilloscope
    14:48 How to find and isolate CAN Bus faults
    The Mechanic Mindset channel is here to help you improve your automotive diagnostic skills. We upload regular, easy to understand, automotive training and tutorial videos covering topics such as; oscilloscope diagnostics, PicoScope, CAN bus, waveform analysis and much more! Subscribe to stay up to date!
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  • @seasonedtoker
    @seasonedtoker 2 ปีที่แล้ว +57

    This guy went to schooling and mentoring so that we can watch everything explained in comprehensive vids. He should be rewarded

    • @MechanicMindset
      @MechanicMindset  2 ปีที่แล้ว +8

      Your satisfaction is my reward! Thanks for watching! 👍

    • @elregresara412
      @elregresara412 9 หลายเดือนก่อน +2

      @@MechanicMindset. I need to know. What Scanner you used? Thanks

    • @cstew8355
      @cstew8355 8 หลายเดือนก่อน

      @@MechanicMindsetwhat a guy thank you mate..

    • @jamescox9203
      @jamescox9203 8 หลายเดือนก่อน

      @@elregresara412 watch it again, he named it

  • @Umski
    @Umski 11 หลายเดือนก่อน +2

    A BMW with indicators 😮🤯😂
    All useful stuff - thanks 👍

  • @willspeakman2461
    @willspeakman2461 2 ปีที่แล้ว +26

    This is by far the best channel to learn about diagnostics. Most videos are hours long and assume you already know the ideas. These 15 min videos are perfect for people like me just getting into it.

    • @MechanicMindset
      @MechanicMindset  2 ปีที่แล้ว +9

      This is great feedback, thanks! I do make an effort to keep the videos as short as possible with an emphasis on keeping it simple and to the point. Glad it works for you!

    • @fastturbo7150
      @fastturbo7150 2 ปีที่แล้ว +3

      This channel is really great one of my top 5 for sure. I signd up to the website. Scanner danner is also amazing im signed up on his site aswell.
      South main auto is another great channel, but its a little diffrnt style. Sometimes he might show you tips and tricks for suspension or something. Where this channel seems more dedicated to showing how to diagnostic.
      Was just tryn to share couple other car channels you might wanna check out

  • @GerardBurkeBurkesGarage
    @GerardBurkeBurkesGarage 2 ปีที่แล้ว +5

    Nice work mate, I enjoyed the video. Congrats on 10k subs 🎉🎉 Well deserved!

    • @MechanicMindset
      @MechanicMindset  2 ปีที่แล้ว

      Cheers Gerard! Glad you enjoyed it.
      Yeah 10k!! Crazy. Thanks man. Hope you’re good

  • @georgedass5419
    @georgedass5419 2 ปีที่แล้ว +2

    Straight to the point and best knowledge I've ever gathered on can bus systems Diagnosis.
    Thanks mate

    • @MechanicMindset
      @MechanicMindset  2 ปีที่แล้ว +1

      Awesome, hope it helps! I like to keep it simple 👌 Thanks for watching !

    • @georgedass5419
      @georgedass5419 2 ปีที่แล้ว

      Thanks to you, all the way from Kenya.
      Good educative content

  • @jordysandino6577
    @jordysandino6577 ปีที่แล้ว +2

    Hello sir .
    Thank you so much for taking your time helping us out with this type of class.
    I’m been repairing cars and never heard this terms I’m learning a lot with you and I will like to learn more I’m very anxious for it .
    I appreciate you

    • @MechanicMindset
      @MechanicMindset  ปีที่แล้ว +1

      Great to hear you are enjoying the learning. If you want to take the learning to the next level, you should definitely check out the Membership on MechanicMindset.com there is a free access to so you can try it out 👍

  • @kitcht
    @kitcht 2 ปีที่แล้ว +2

    Great vid. Couple of things I learnt. Easy test sing comms test to module to test can connectivity. And the voltage test for high and low can is useful quick test. And using the resistance check. But then using piscoscope to confirm diagnoses using evidence. No guessing! 20 years out of workshop so nice to keep learning and keep hand in. Thanks again.

    • @MechanicMindset
      @MechanicMindset  2 ปีที่แล้ว

      Great to hear you are keeping your hand in the game and continue your learning Tony! What else would you like to see on the channel?

  • @user-zm4eb9xp3v
    @user-zm4eb9xp3v 6 หลายเดือนก่อน +2

    This is a very detailed video. Thank you and keep up the amazing work!

    • @MechanicMindset
      @MechanicMindset  6 หลายเดือนก่อน

      Glad you enjoyed the video!

  • @robertmobileman8304
    @robertmobileman8304 2 ปีที่แล้ว

    great content as always , i will check those waveforms out thanks, information is key in modern cars for sure , thanks Matt

    • @MechanicMindset
      @MechanicMindset  2 ปีที่แล้ว

      Glad you enjoyed it. Yes need to keep up to date, but remember to keep it simple too! Cheers Darren

  • @MiracleMAX
    @MiracleMAX 2 ปีที่แล้ว +1

    Great video and explanation Darren!
    I'll be using this one in class! 😉😁

    • @MechanicMindset
      @MechanicMindset  2 ปีที่แล้ว

      Awesome, I hope it helps them! Very important to keep it simple!
      Cheers

    • @MiracleMAX
      @MiracleMAX 2 ปีที่แล้ว +1

      @@MechanicMindset Too true mate. Keep up the good work!

  • @ianhenderson4441
    @ianhenderson4441 2 ปีที่แล้ว +1

    As a taxi-meter installer lots of helpful information ...I fit can bus interface modules ( speed data) mostly every day ...enjoyed the Video👍👍

    • @MechanicMindset
      @MechanicMindset  2 ปีที่แล้ว +1

      Ah cool, yes good to know these basics if anyone gets it wrong. Cheers!

  • @jmc6940
    @jmc6940 2 ปีที่แล้ว

    Your a great teacher, vary enjoyable listen to.

    • @MechanicMindset
      @MechanicMindset  2 ปีที่แล้ว

      Thanks for the kind words! Appreciate it, great to have you on the channel 👍

  • @williamsullivan6984
    @williamsullivan6984 2 หลายเดือนก่อน +1

    Thank you for sharing your knowledge in an easily accessible format. Your videos are easily followed and communicate a wealth of information in a very concise fashion. God Bless You, May You Enjoy Great Health and Happiness.

  • @Lambros_Stefaneas
    @Lambros_Stefaneas 2 ปีที่แล้ว +1

    Amazing video. Very Very good informations.one more video from you,that I learned something more. Well done. Waiting your next, to learn more. Thanks.

    • @MechanicMindset
      @MechanicMindset  2 ปีที่แล้ว

      Great to hear! What was the main thing you learnt today? Thanks 👍

  • @iankelly2110
    @iankelly2110 2 ปีที่แล้ว

    Enjoyed that Darren great explanation

    • @MechanicMindset
      @MechanicMindset  2 ปีที่แล้ว

      Great to hear! I hope it helps. Cheers!

  • @1waukesha
    @1waukesha ปีที่แล้ว

    Awesome video. Thanks !

  • @faroukkhan6777
    @faroukkhan6777 5 หลายเดือนก่อน

    Excellent sir great teacher,, keep up with your great work 👌

  • @johnfrancis9668
    @johnfrancis9668 หลายเดือนก่อน

    very good explanation ❤

  • @CarsExposed
    @CarsExposed 2 ปีที่แล้ว

    Great explanation as always Darren 👍🍻

  • @stephanevaucelles6378
    @stephanevaucelles6378 2 ปีที่แล้ว +1

    Hello and thank you for this video

  • @tech.automobilemaster.1017
    @tech.automobilemaster.1017 หลายเดือนก่อน

    Good information guys about topology networks. ❤❤.👍👍........

  • @vicky-nc3to
    @vicky-nc3to 2 ปีที่แล้ว

    Well explained sir, your channel is unique,.. Please keep the videos uploading, we are following....

    • @MechanicMindset
      @MechanicMindset  2 ปีที่แล้ว

      Thanks, i hope it helps! Lots more to come - just need to find the time! Cheers

  • @dominictomasi9247
    @dominictomasi9247 2 ปีที่แล้ว +5

    Excellent videos! Especially for those with less experience with CAN bus networks like me. I do have a suggestion that might help many of us novices. Can you make a detailed video of what pins on the module harness to tap into with a scope or multimeter to diagnose or test a CAN bus network on say the KGM module on a E series bmw?

    • @MechanicMindset
      @MechanicMindset  2 ปีที่แล้ว +1

      Hi Dominic, thanks for the feedback and glad you are enjoying the channel!
      That’s quite specific 😅. I think it is best to start with the wiring diagram. That’s what I would have to do to make the video. 👍

  • @yassin9749
    @yassin9749 2 ปีที่แล้ว

    Great Video Sir, Keep the great work thank you ...

  • @kemronsmall4172
    @kemronsmall4172 2 ปีที่แล้ว

    Good video, love the suspense 👌🏼👌🏼

  • @alrifainidal
    @alrifainidal 2 ปีที่แล้ว

    Great video Mate . keep the good work

  • @padraiggalvin2807
    @padraiggalvin2807 ปีที่แล้ว

    good point about the scan tools

    • @MechanicMindset
      @MechanicMindset  ปีที่แล้ว

      I will follow up on this at some point 👍

  • @CANDiagnostic
    @CANDiagnostic 2 ปีที่แล้ว

    Great video buddy well done!

  • @markg6jvy135
    @markg6jvy135 2 ปีที่แล้ว

    Full of info your videos 👍👏👏

  • @saibabupodala6297
    @saibabupodala6297 2 ปีที่แล้ว

    Very good video enjoyed

    • @MechanicMindset
      @MechanicMindset  2 ปีที่แล้ว +1

      Great to hear, have you had many CAN faults to diagnose? thanks for watching!

  • @chrisczarnik3439
    @chrisczarnik3439 ปีที่แล้ว

    Great video, 👍👍👍👍from 🇦🇺

  • @wesleysrianekkul8178
    @wesleysrianekkul8178 2 ปีที่แล้ว +1

    Awesome video. Probably one of the most technical and informative channels on TH-cam! Thank you for the information. If I may ask what was your technical background? Dealership technician, college/tech school instructor?

    • @MechanicMindset
      @MechanicMindset  2 ปีที่แล้ว +2

      Glad you enjoyed the video. I’ve been through the mill 😂
      BMW Apprenticeship > Senior Tech > Workshop Control > Audi Tech Trainer > Global Train the Trainer > Course Author > Managing a team of authors > Mechanic Mindset 💪

    • @davidpaterson6318
      @davidpaterson6318 2 ปีที่แล้ว +1

      @@MechanicMindset Could you do these in French?

    • @MechanicMindset
      @MechanicMindset  2 ปีที่แล้ว

      @@davidpaterson6318 Subtitles?

    • @davidpaterson6318
      @davidpaterson6318 2 ปีที่แล้ว +1

      @@MechanicMindset Hi, Not really ideal! As the French distributor for PicoScope, I'm trying to organise something similar, since there is a big demand for just this type of video here in France. Although I speak French, and can translate into French, French is not my mother tongue. I think it is important that the voice is French. I'm not keen on subtitles for this type of video.

    • @MechanicMindset
      @MechanicMindset  2 ปีที่แล้ว +1

      @@davidpaterson6318 OK thanks for the feedback. No plans in the near future as voice over translation can be tricky to get right. I would also have to set up a separate channel (which isn’t impossible, but maybe in the future).

  • @LMAutoRepairs
    @LMAutoRepairs 2 ปีที่แล้ว +1

    Very well presented...
    👍👍👍

  • @giopirmisashvili5514
    @giopirmisashvili5514 24 วันที่ผ่านมา

    Thank you

  • @flymoracer
    @flymoracer ปีที่แล้ว

    Great video. I had a very similar fault on a Mini Cooper S. ABS module DTCs, Christmas tree lights on, wipers going etc. Even the sun roof wouldn’t work. From memory I think we also had ‘voltage low’ errors. Turned out to be a faulty fuse box module. Had to replace and program the new module to fix the problem. We changed the ABS module a couple of times first but that was a red herring.

    • @MechanicMindset
      @MechanicMindset  ปีที่แล้ว

      Thanks for sharing! Got there in the end 👍

    • @flymoracer
      @flymoracer ปีที่แล้ว +1

      @@MechanicMindset I had a related question if that’s ok. I don’t think I’ve ever seen anyone on TH-cam attempt to communicate with a single module in isolation to the rest of the network, e.g. testing communication of say an ABS module on the bench by giving it power, ground and scoping the CAN pins. Is that possible to do?

    • @MechanicMindset
      @MechanicMindset  ปีที่แล้ว

      @@flymoracer It should be. You’ll need to make sure you power all the correct pins (ie T15 wake up for some modules)

  • @sara78130
    @sara78130 2 ปีที่แล้ว +1

    Thanks best

  • @ddsajev
    @ddsajev 2 ปีที่แล้ว +1

    Your videos are really educative & on point. Thank you for your time & efforts.
    Please explain, that i am trying to connect to CAN bus via OBD to a JDM toyota navigation. Are the OBD & junction connector CAN are same or different.

    • @MechanicMindset
      @MechanicMindset  2 ปีที่แล้ว

      Thanks for the feedback! Sorry, not sure, I am not so close to Japanese automotive

  • @diyuser3446
    @diyuser3446 2 ปีที่แล้ว

    Thank you for your work. Can you please tell us where to find more info about network topology for BMWs, wiring diagrams? Basic can bus network topology is available but termination resistors placement I knew from your video. Where we can get more specific info. Whatever I found was more confusing than explaining. Thank you.

  • @puppyscoud6881
    @puppyscoud6881 2 ปีที่แล้ว +1

    What a great sight and great teacher your a credit
    We’re are the download links hidden

    • @MechanicMindset
      @MechanicMindset  2 ปีที่แล้ว

      Hi, the link is just below the first paragraph in the description. Tap your email in and you’ll get the link. Thanks for the feedback! Great to have you on the channel!

  • @jovanthompson9669
    @jovanthompson9669 ปีที่แล้ว +1

    Hey really good video thanks for sharing , but In a case where I would have to start disconnecting modules ,
    instead … would removing the fuse for that particular module be better ?

    • @MechanicMindset
      @MechanicMindset  ปีที่แล้ว +1

      Great question! Unfortunately no; we disconnect the modules to eliminate possible wire faults, caused internally in the module ie short circuit etc

  • @kaneki-kun9500
    @kaneki-kun9500 4 หลายเดือนก่อน

    Brother im an Student from Germany, i swear i learn about Can-bus since 5 Year and ABSOLUTLY EVERY TEACHER thinks we are high inteligent beings, the way they try to explain
    But you did it for monkeys like us the right way

    • @MechanicMindset
      @MechanicMindset  4 หลายเดือนก่อน +1

      Haha, it doesn’t need be complicated most of the time. Thanks!

  • @Mohamed-jn4yr
    @Mohamed-jn4yr 2 ปีที่แล้ว +1

    tks a lot 🙏

  • @shawnm2597
    @shawnm2597 ปีที่แล้ว

    Agreed, simple computer diags, check hardware first.

  • @mattmarshall7666
    @mattmarshall7666 2 ปีที่แล้ว +1

    Nice video like always . Did you find the reason for the blown abs fuse

    • @MechanicMindset
      @MechanicMindset  2 ปีที่แล้ว +2

      Glad you enjoyed the video! It was a plant, I did it on purpose to show you how a simple fuse can cause CAN network problems 👍

  • @vladmarius2404
    @vladmarius2404 ปีที่แล้ว +1

    Your videos are amazing! Very clearly explained. I do have a curiosity though: what could happen if the 12V radio supply wire touches the CAN-low wire? (the wires are located right next to each other in the quad-lock connector). I've done this on my bmw E60, by mistake, while installing a bluetooth module, and i'm not sure if something gone wrong with the can network/modules. Also, how can i test if everything is alright? I've noticed that everytime i'm turning on the ignition, it activates the fuel pump for 20 seconds...it wasn't doing that before touching these wires together. Many thanks!

    • @MechanicMindset
      @MechanicMindset  ปีที่แล้ว +1

      Glad you enjoy the videos! The network in the radio shouldn’t have any effect on the fuel pump; different network. The 12v short on CAN will not have damaged anything. I do it all the time in training. I’m fact, if it is low speed CAN, that network will still operate as normal! As long as you can communicate with things, network is ok. Re the fuel pump, I can’t remember the pump running for 20 seconds, but if you have a power train network problem, I think the pump will run continuously

    • @vladmarius2404
      @vladmarius2404 ปีที่แล้ว +2

      @@MechanicMindset Wow, such a nice and fast answer. Thanks a lot! I'm going to share your channel with some of my friends that share the same passion.

  • @PatrykRElektronika
    @PatrykRElektronika ปีที่แล้ว

    Wow, I'm so impressed. You wouldn't believe how many hundred times I had to explain all of that to the mechanic who wants to send me the instrument cluster for a repair due to ie. ABS fault on the cluster but the "diagnostic machine" doesn't say that ABS is faulty, so it must be the instrument cluster. Or because Google says that. From now on I'll be sharing that video with them :)
    Just for your information, or rather clarification as I assume you know that- it's not LOW SPEED CAN which doesn't use the termination and has a different voltages, it's the FAULT TOLERANT CAN (FT) characteristic. FT CAN is used in BMW @ 100kbit/s, FERRARI @ 50kbit/s, MB @ 125kbit/s and the "STANDARD" CAN which can go as slow as 40kbit/s is also used with the same speeds of 125kbit/s ie in FORD, JAGUAR, LAND ROVER. It's the same speed as FT CAN on this BMW.

    • @MechanicMindset
      @MechanicMindset  ปีที่แล้ว +2

      Haha, send them my way for some learning 😁
      Ah ok yes, got you. I associate the trend of slow CAN not using the 120 terminal resistors (being able to run single wire mode). I’m familiar with the a high and medium speeds that do use them. That’s how we’ve been led to teach it with the manufacturer. Think the important lesson; if you have terminating resistors, there are more opportunities for problems 👍 cheers

  • @tyeautube
    @tyeautube 2 ปีที่แล้ว

    Hello sir, I am in Cambodia, my bmw x5 2007 has no sound. radio, ccc is working normal, but no radio sound nor warning tone. Could you please advise from which point I should make the troubleshot.
    Thank you!

  • @AN77
    @AN77 2 ปีที่แล้ว

    Thanks, Great video. After you have lokking at the wave forms of the can-bus, you was knowing that the canbus system was OK? Than you know that the problem would be the abs-module itself, the power/ground to the abs-module, or the can-connection(cables or connectors) to the abs-module?

    • @MechanicMindset
      @MechanicMindset  2 ปีที่แล้ว +1

      Yes correct. Also the fact that the other modules are communicating on the scan tool, and the function test 👍 Thanks

  • @karollukaszuk3784
    @karollukaszuk3784 2 ปีที่แล้ว +1

    Cool 😊

  •  3 หลายเดือนก่อน

    I've used the multiecuscan system on our citroen relay to find the engine faults and fixed all the asdociated problems.
    Now when I rescan there are no engine fault codes but its pulled up a Body U 1602 CAN line error code but theres not engine light come on. Ive tried searching for a fix on this but its proving harder than I thought. I know its a bit cheeky , but would you have any idea where I need to start checking and or looking at. Some people say to ignore it if theres no engine light coming on .

  • @linuxmonkey
    @linuxmonkey 10 หลายเดือนก่อน

    Bruv... I didn't expect that ending. 😂😂😂 Damn. Why the heck is this so entertaining? I'm a software engineer not mechanic lol.

    • @MechanicMindset
      @MechanicMindset  10 หลายเดือนก่อน +1

      Haha! It means we’re doing TH-cam right 😆 Glad you enjoyed the video!

  • @cck1496
    @cck1496 ปีที่แล้ว

    Very good video.....But there is no basic video about CAN on your channel? Can you kindly make please about "what is CAN and how it works?"
    Thanks.

  • @JeanFrancisD
    @JeanFrancisD 2 ปีที่แล้ว

    Hi Mechanic Mindset, Great videos, I'm trying to diagnose a lost communication problem over CAN Bus in a Chrysler product and you've helped me understand a lot better how CAN bus networks works. I tested the network today with an oscilloscope and I wasn't able to se any interference in the messages. I was worried about some big spike at the end of messages (up to 5V in can high and down to 0 in can low) But seeing this video I see that you have similar spikes in voltage. Is that normal? since you don't seem to mind them I'm guessing theses are normal? Also the network doesn't have a terminal resistance of 60 Ohm like its supposed to, I get 40.7 Ohm instead. I'm currently trying to isolate the module that does that but I didn't have any luck with the oscilloscope, everything looks normal. My problem is also intermittent, the Jeep can drive fine for hours until every module freaks up in the dash. Thanks!

    • @MechanicMindset
      @MechanicMindset  2 ปีที่แล้ว +1

      Hi, yes the spike at the start of the message is normal.
      I’ve not come across 40ohms before, but look in the common modules that all models have (ie engine, ABS)
      The scope will be a good tool to capture the intermittent fault. Just test in a long time base and zoom after the fault happens to see what it is 👍

    • @JeanFrancisD
      @JeanFrancisD 2 ปีที่แล้ว +2

      Thanks for your awnser. I just found that an aftermarket device that I installed in the Jeep to bypass a security module in 2018+ Fiat/Chrysler products to be able to plug diagnostic tool made it drop to 40.7 Ohm. When I remove the security bypass the network goes back to 59.6 Ohm.
      This device was installed after my CANBus problem started (trying to diagnose it), At least I can rule this out of my symptoms.. Next step is most likely to go drive it with the oscilloscope and try to catch it when it happens!

    • @BOPotstill
      @BOPotstill ปีที่แล้ว

      @@JeanFrancisD Likely the bypass had its own internal terminating resistor thus dropping the CAN resistance to your observed 40 ohms. Not really a problem, but it can happen even in certain OEM applications where the manufacturer installs 2 terminators and uses another component that has an internal terminator as well.

  • @michaelrollins3979
    @michaelrollins3979 2 ปีที่แล้ว

    Love your videos man! Quick question- @around 14 mins you use the scope to check can- you refer to low speed can and high speed can but the scope shows the blue and the red reflecting each other on both, I’m assuming you’re just checking between obd 6 and 14 on both? Or are you doing 6 and a body ground for low and then 14 and body ground for high? I’m new to scopes. Thanks!

    • @michaelrollins3979
      @michaelrollins3979 2 ปีที่แล้ว

      Nevermind, just pressed play and saw that you said you have 2 videos on it with more details lol thanks!

    • @MechanicMindset
      @MechanicMindset  2 ปีที่แล้ว

      @@michaelrollins3979 No worries, glad you enjoy the videos. Let me know if you have any questions after watching the other videos 👍

  • @jameshall2299
    @jameshall2299 ปีที่แล้ว

    I have a ram 1500 not communicating with tpms module. Checked resistance and have 60 ohms between high to low, 2.6v high to ground 2.4 low to ground, but, I have .54 volts between can high and can low. Can I have a short on one of the two 120 ohm resistors? This vehicles wiring has been tampered with.

  • @ChupoCro
    @ChupoCro 2 ปีที่แล้ว

    I have almost identical problem with Vectra C 2.0 2002 (ABS and some other lights on but ABS is still working, can't use turn signals, horn and full beam headlights) but after 20 to 40 minutes of driving (when something worms up or dries) everything starts working well. When I start the engine then RPM and speed indicators drop to zero for a moment exactly every 45 seconds and when that happens 4 times then the RPM and speed indicators stay at zero and the warning lights turn on. After turning the engine off and back on everything repeats again and for the next 4 x 45 seconds everything works well. I removed the CIM and cleaned all the connectors but still the same. When the warning lights are on the error reported by OPCOM is "No communication with CIM". I removed and cleaned UEC, all fuses and some other connectors and added another battery negative to chassis wire but still couldn't find what is causing the problem. The same problem on many Vectra B 1.6i cars could be solved by just removing the cabin light bulb.

    • @MechanicMindset
      @MechanicMindset  2 ปีที่แล้ว +1

      The cabin light bulb 😆. Would be interesting to know more about that fault!
      What does the CAN waveform look like on the scope when you have a fault?

  • @jeremyhahn5593
    @jeremyhahn5593 ปีที่แล้ว

    I've been having problems with my medium can bus on my 2013 jaguar xj the whole infotainment system is not working I am a mechanic but im clueless to this would you possibly walk me through diagnosing a module my multimeter is quite complex

  • @jackspratt4343
    @jackspratt4343 2 ปีที่แล้ว +1

    Hi, does all CAN BUS communication go through the main engine ECU, or a central ECU ? Or, can susbsytems communicate among themselves without the main ECU being involved ? Thanks,.

    • @MechanicMindset
      @MechanicMindset  ปีที่แล้ว

      Great question! CAN is considered a multi master network; each module communicates when it wants. There is an arbitration strategy to sort priority when there is a clash. There is also a gateway but this just connects the different networks, like a translator. The gateway can be combined in another module or be separate

  • @manfredgarthoff1409
    @manfredgarthoff1409 ปีที่แล้ว

    I like this video. good explication of diagnistic. But one question i have.
    When i disconnect one module for to see the error is still there or not, i have to disconnect the battery first or turn off the ignition? or can i disconnect this during date transfer at the bus? Thank you

    • @MechanicMindset
      @MechanicMindset  ปีที่แล้ว +1

      Ideally, turn off the ignition first. I disconnect modules with the ignition on sometimes for training and haven’t damaged anything yet; but best turn ign off 👍

    • @manfredgarthoff1409
      @manfredgarthoff1409 ปีที่แล้ว

      @@MechanicMindset thank you for the quick response 💪

  • @tomasagustinsanchez7197
    @tomasagustinsanchez7197 10 หลายเดือนก่อน

    Hello! I have a really tricky one..
    I currently repaired the FRM and it fixed all the electrical problems but my windows switch is still not working. I can move the mirrors but I can’t operate the windows.
    It’s saying that I have a Lin Bus communication problem. Would that be a cable?
    Please please help me

  • @gajahlampung5674
    @gajahlampung5674 2 ปีที่แล้ว

    niceee videos sir....sir i'm from indonesia can you help me..i have cls 55amg ... with scanner i only detech tcm modul what's wrong with my car sir??

  • @fourbrothersentertainment1372
    @fourbrothersentertainment1372 8 หลายเดือนก่อน

    Hi, I have 2008 e60 535i with the jb4. Do you know if it causes no communication issues with the dme? When bmw dealership tried to connect their scanner they said they can not communicate with any modules. I even brought it to a local garage which they showed me that ista+ with Dan was not able to communicate with any as well. If the jb4 is interfering with the communication to the me how can new modules, battery or keys be programmed?
    Your assistant will be greatly appreciated.

    • @richardnilsen8950
      @richardnilsen8950 8 หลายเดือนก่อน

      Dealer said no comm with the dme the dealer should have charged you for diagnostics time and gave you a written receipt explaining why and how much to get comms back to continue further diag work.🇺🇸

  • @GaryTaylorvw
    @GaryTaylorvw 29 วันที่ผ่านมา +1

    Hi the image you’ve got for your bmw canbus network layout, where did you get that from please? I’m wanting to find one for audi a3 8p sport back 3.2 vr6 2006/7 as I’ve cut some twisted cables and didn’t realise they were for canbus, new to engine swaps so was a stupid mistake, I’ve stripped all the table off and I’ve got traced them back to modules / plugs etc just need to know what goes to what so I can splice them, if you can help I’d really appreciate it
    Can-bus cut items
    Ecu body plug
    ABS module
    Airbag module
    Headlight level module 8P0 907 357 F
    Steering wheel module 8P0 953 549 F
    Console/dsg shifter
    Dsg trans plug
    Rear diff / haldrex plug diff side
    CANBUS gateway module plug 10 pin
    1K0 907 530G
    Top side plug tab
    6 from left red / brown
    6 from left red / black
    Find what grey / yellow wire goes to on instrument cluster, as that has a cut canbus wire
    10 sets cut in total

    • @MechanicMindset
      @MechanicMindset  29 วันที่ผ่านมา

      You’ll be better looking for a wiring diagram. Try Carmin mobile app, it’s free 👍

  • @wilsonwichman4847
    @wilsonwichman4847 3 หลายเดือนก่อน

    My question is what should I do If I get no voltage right out of the pcm for either can bus high or can bus low?

  • @vicky-nc3to
    @vicky-nc3to 3 หลายเดือนก่อน +1

    I have been following topology of CAN . It is similar to the schematic used in video. There are seprate branch for powertrain, crash, comfort etc. Now what i find that each of this branch has sperate terminating resistor. I found that 1 resistor(120ohm)is always in gateway & other is in other control unit ( it could be any control unit in branch) . Is it possible that all branches using 1 common resistor in gateway. Or i am in wrong track ?
    Thankyou

    • @MechanicMindset
      @MechanicMindset  3 หลายเดือนก่อน +1

      I think it will be separate. Otherwise all networks will be connected and it would t work 👍

    • @vicky-nc3to
      @vicky-nc3to 3 หลายเดือนก่อน

      @MechanicMindset hmm... possibly gateway has multiple resistor for each branch 🤔..

  • @Winstonzm
    @Winstonzm 2 ปีที่แล้ว +3

    My 2008 328i runs and drives fines. But I can't get any scanner to communicate to the dme via the obd port. I see the dme runs up pass the ibs to the obd port. And notice both the obd and ibs is the same Grey color in the model you showed. Would a bad ibs interfare with the scanner trying to talk to the dme from the obd port?

    • @MechanicMindset
      @MechanicMindset  2 ปีที่แล้ว +1

      Hi, can you communicate to all the other modules?

    • @Winstonzm
      @Winstonzm 2 ปีที่แล้ว +1

      @@MechanicMindset Wow thanks for the crazy fast reply. I have just the most basic obd scanner. I can confirm it worked on the car prior to this problem. And can confirm the scanner works on other cars. When I plug it into the e90 is says "no obd ll response" so I can't access anything through the scanner. Thats Lead me to checking all the fuses which were good. Then checking the compartment in the engine bay where the dme is housed. No signs of water damaged check the connectors and everything looked good. Disconnected the connectors going into the jbe junction box one by one. Same no luck. Disconnected abs module same thing. Should I just continue trying to unplug modules to see if thats what's holding up the com line?

    • @MechanicMindset
      @MechanicMindset  2 ปีที่แล้ว

      @@Winstonzm So there are just 2 wires to the gateway (JBE I think) for diagnostics. Pin 6 & 14 on obd socket. Some people mess with these wires to prevent theft so I would start checking everything is ok at the obd. If it starts and runs, the whole CAN network is probably ok.

  • @michaelwhelan564
    @michaelwhelan564 ปีที่แล้ว

    I can clearly see that this is a great video, but is there a video that answers the question "What is a can bus and why is it needed". My old lotus has indicators and no can bus in sight.

  • @mvnnyss3774
    @mvnnyss3774 ปีที่แล้ว +1

    Hello! I have CAN Bus communication error on my abs which is causing service power steering to pop up when I’m driving for a while. Abs , brake, and tc lights come on and goes away after about 5-10 minutes of the car being off. Any suggestions?? 2015 Camaro SS 🫣

    • @MechanicMindset
      @MechanicMindset  ปีที่แล้ว

      Oh dear! I would try and confirm what type of fault you have (short or open etc) and then try and replicate it. Then you need to isolate the problem (ie is it module or is it wiring) wishing you all the best!

  • @mohammedarshad2757
    @mohammedarshad2757 3 หลายเดือนก่อน

    Hi how are you sir thank

  • @franktran3967
    @franktran3967 4 หลายเดือนก่อน

    Hi everybody, I have a Honda civic 2010 coupe is false error link when I setup ODB2 scan then I probed CAN-H and CAN-L look ok but L-line is a straight line 9 volt dc, it has no wave form during ignition is on or engine is running. I am not sure what it should look like before I continue to chase it down to find the problem. Anyone has any suggestion please!!! thank you every much. I don't want to bring it to the shop or dealer because the value of my car might be cheaper than the cost to repair.

  • @automatedmwanza
    @automatedmwanza ปีที่แล้ว

    helllooo Darren
    need your help about wiring diagram

  • @elregresara412
    @elregresara412 9 หลายเดือนก่อน +1

    Amigo how are you is you scanner Autel Ultra?

    • @MechanicMindset
      @MechanicMindset  9 หลายเดือนก่อน

      This tool is a Ancel FX9000. It’s launch based but older software. ThinkCar make a great tool with topology. Autel Ultra is probably top choice for that type of tool

  • @coycarlson4979
    @coycarlson4979 ปีที่แล้ว

    REALLY - Does EVERYTHING on modern vehicles need to be computer controlled 🤔😒 ?. In my opinion, it is Rediculous that wiper blades and all the other issue displayed in this video can be tied to / caused by problems from the ABS -
    You are VERY KNOWLEDGEABLE - on locating CAN bus faults , thank you for sharing your knowledge - GREAT VIDEO , and your instruction to ALWAYS start with powers and grounds when encountering a CAN bus fault - is 👍👍✌️🙂

    • @MechanicMindset
      @MechanicMindset  ปีที่แล้ว

      That’s right, keep it simple! Thanks 👍

  • @AhmedAli-hu8ng
    @AhmedAli-hu8ng 2 ปีที่แล้ว +1

    Hello sir ihave one question wich module is can gateway in BMW's

  • @woodybear8298
    @woodybear8298 ปีที่แล้ว +1

    How do you know what the abbreviations in the schematic mean? The initials in the boxes don't even make any sense. For instance, how does "Kombi' translate into 'instrument cluster'?

  • @alinduta5398
    @alinduta5398 2 ปีที่แล้ว +1

    hi
    what is the third chanel on pico doing?

    • @MechanicMindset
      @MechanicMindset  2 ปีที่แล้ว

      Hi, great question, it is AWG. Waveform Generator. You can create output signal from Pico but the voltage is too low for automotive use

  • @briantek1986
    @briantek1986 ปีที่แล้ว

    Can i request a topic no communication line in dlc please thank you

  • @sebczajna700
    @sebczajna700 2 ปีที่แล้ว +1

    Great video👍 3 ohms resistance between can line or Can/ground?

    • @MechanicMindset
      @MechanicMindset  2 ปีที่แล้ว +1

      Check this video out: th-cam.com/video/JPE42HSJxAk/w-d-xo.html
      That was CAN High and CAN Low short together 👍 cheers!

  • @petarsavic6447
    @petarsavic6447 11 หลายเดือนก่อน

    Just one mention. Week ago had a Porsche Macan in my shop, it throw communication codes all over modules. Couldn't communicate with pasm module. I disconnected it, thinking it was disturbing the can network, but nothing changed couse it was steering rack electronics making problems and blocking pasm module communcation. Strangly I COULD communicate with the steering rack :)

    • @MechanicMindset
      @MechanicMindset  11 หลายเดือนก่อน

      Interesting! Did steering rack only have one network connected? Some have 2

    • @petarsavic6447
      @petarsavic6447 11 หลายเดือนก่อน

      @@MechanicMindset haven't had a topology or that info, all I know that it was two can wires with another 12v wire on steering electronics. When unppluged everything goes back normal, plugged- no pasm module in the list on autel, no communication with it, but steering electronics I could communicate and read codes etc. 😂

  • @prestontrager3339
    @prestontrager3339 2 ปีที่แล้ว

    I love electronics!
    Problem:
    Car does not turn on due to communication issue (ACC not being engaged)
    Car: 2007 Mini Cooper S (r56)
    What I know:
    Terminal 15 is not communicating with the CAS which is then not engaging ACC (I think its the K BUS)
    I know Its a communication error I just cant figure out where/what CAN
    All lights work (everything works that does not require the FOB (again... Issue with ACC not being engaged))
    CAS, DME, Key have bean replaced by me, also reprogrammed (not by me, that would not turn out well)
    Just a 16 year old trying to figure this damn thing out :)
    Please let me know if you have some sort of experience with this
    Thanks!

    • @MechanicMindset
      @MechanicMindset  2 ปีที่แล้ว

      Hi, there is a T15 wake up wire that goes around a few modules. Might be worth checking that if modules aren’t waking up 👍

  • @user-tt9bs3yl9h
    @user-tt9bs3yl9h 9 หลายเดือนก่อน

    I need face-to-face class

  • @talaueconstante830
    @talaueconstante830 9 วันที่ผ่านมา +1

    Can bus is simple if you understand it

  • @corneleones
    @corneleones ปีที่แล้ว

    You could lift the wipers from the windshield!

  • @heetsolvex2237
    @heetsolvex2237 2 ปีที่แล้ว

    Hey great information. I am seeing traction control and abs warning lights.As per your video on CAN bus network i have checked CAN bus resitance. I am seeing 120 Ohm resistance in CAN bus in OBD connector, but in ABS connector CAN bus resistance shows 60 ohms. Can you help me out it ?

    • @MechanicMindset
      @MechanicMindset  2 ปีที่แล้ว

      Sounds like you are check 2 different networks that aren’t connected. Best refer to wiring diagrams. Can you communicate with everything on scan tool?

  • @MechanicMindset
    @MechanicMindset  ปีที่แล้ว +1

    Mechanic Mindset Diagnostic Coach program is here! Click link: www.mechanicmindset.com/diagnostic-coach

  • @andrzejtajchman2372
    @andrzejtajchman2372 ปีที่แล้ว

    Fucking amazing content, well ilustrated and perfetctly explained. Im gonna make some juicy $$$ thanks to your channel :)

  • @ADE2366
    @ADE2366 2 ปีที่แล้ว

    Any indicator faults on the Beemer ? 😂😉👍🏼

    • @MechanicMindset
      @MechanicMindset  2 ปีที่แล้ว

      They’re ok on mine, I got the optional extra fitted 🤣

  • @omaromartt
    @omaromartt 4 หลายเดือนก่อน

    Please translatet
    شكرا جزيلا فيديوهاتك التعليمية، لغتي الانجليزية ضعيفة جدا ومن ذلك افهم بحدود 70-80٪ من الكلام
    رائع جدا جدا جدا
    حبذا لو يكون هناك قناة ولو مدفوعة بشكل مقبول لتعليم Canbus للاجانب مراعيا صعوبة اللغة عليهم

  • @JohnSmith-ok9sn
    @JohnSmith-ok9sn 4 หลายเดือนก่อน

    How did you come to the conclusion that CAN network is OK on that car, at 9 min 35 sec of the video?
    You just, kinda, said it, but did not explain HOW you had arrived there? What was your thought process?
    Perhaps, I missed something?..
    Please, elaborate.

    • @MechanicMindset
      @MechanicMindset  4 หลายเดือนก่อน

      The scan tool got the fault codes from all the modules (except ABS). We localised the issue to ABS, not complete network failure

  • @kenken-sr2vq
    @kenken-sr2vq ปีที่แล้ว

    Whats the yearly fee?

    • @MechanicMindset
      @MechanicMindset  ปีที่แล้ว

      $100 (get 2 months free 👍)
      www.mechanicmindset.com/diagnostic-coach

  • @Chauhan.uk1141
    @Chauhan.uk1141 2 ปีที่แล้ว

    What is hateway How check to gateway

  • @ErikTheVikingMechanic
    @ErikTheVikingMechanic 2 ปีที่แล้ว +1

    Indicators on a BMW are optional extra. Not all BMW's have it lol

    • @MechanicMindset
      @MechanicMindset  2 ปีที่แล้ว

      Haha! Yes, remember to check the option is fitted!!

  • @jen318
    @jen318 4 หลายเดือนก่อน

    There needs to be a better development in tools or scanners . This reminds me of the old computers it needs to be simpler and more precise its 2024 not 1940

  • @thecordero8008
    @thecordero8008 2 ปีที่แล้ว +1

    do you have an email friend

    • @MechanicMindset
      @MechanicMindset  2 ปีที่แล้ว +1

      Yes! Darren@mechanicmindset.com

    • @thecordero8008
      @thecordero8008 2 ปีที่แล้ว

      @@MechanicMindset darren@ ?

    • @MechanicMindset
      @MechanicMindset  2 ปีที่แล้ว

      @@thecordero8008 Yep, it’s in the ‘about’ section of the channel. Or check mechanicmindset.com

  • @rotoboravtov4354
    @rotoboravtov4354 8 หลายเดือนก่อน

    There's no way we can't come up with a design where l removing abs fuse won't cause faults elsewhere. This is just bad

  • @shifty2755
    @shifty2755 ปีที่แล้ว

    You shouldn't call yourself a mechanic. You are way better than a mechanic.

  • @jamesbarratt593
    @jamesbarratt593 2 ปีที่แล้ว

    Imagine the penquin in Batman. Exact same build. A customer I had was a spitting image. So annoying too with his gauky little voice. He believed I was wasting time testing things on his 735 li bmw and thought by plugging in my scan tool it would find the fault immediately. He’d also said water never ruins engine computers or modules and a heavily blocked dpf was ok plus a big oil leak back of engine no issue either.
    Ha ha

  • @chrisczarnik3439
    @chrisczarnik3439 ปีที่แล้ว +1

    Far out, some car BMW.

    • @MechanicMindset
      @MechanicMindset  ปีที่แล้ว

      Euro cars in general 😂

    • @hottorchbeats4739
      @hottorchbeats4739 2 วันที่ผ่านมา

      BMW is Over engineered . They attract people that are looking for features, like who the fck need head light wipers.

  • @kraszankamarandzanda
    @kraszankamarandzanda ปีที่แล้ว

    this wipers are annoying

  • @taipan8021
    @taipan8021 6 หลายเดือนก่อน

    bruh the Wipers are irritating