Reading an Existing CAN Bus Network | CAN Bus Communications [FREE LESSON]

[@hpa101]

Building a fast car? Get $400 OFF the all inclusive VIP package deal: hpcdmy.co/vipy44 Learn CAN Bus for motorsport and enrol today with 50% off your first course: hpcdmy.co/offery44 TIME STAMPS: 0:00 - Intro 0:17 - Key Considerations 1:48 - Connecting to a vehicle 3:26 - Using the Oscilloscope 4:55 - Taking a signal reading 5:34 - Confirming the reading 6:22 - Reading CAN Bus traffic on the Scope 8:06 - Viewing the data on the software 9:07 - A good trick to help 9:37 - Looking for CAN Bus wiring 11:05 - Outro

[@nttilley]

Great instruction. All around very informative channel here. Thank you guys and girls.

[@ABusFullaJewz]

CAN bus is such wonderful technology. Our team has only recently been truly utilizing it to its full extent with dedicated CAN sensor modules for things like strain gauges, tire temp sensors, etc. It has really revolutionized how we treat data acquisition

[@olgglo]

thank you for information! very comprehensively presented! i will definitively be looking forward to more vids from this channel

[@DarylWinterbottom]

Excellent presentation. Clear and concise. Will follow to watch more.

[@nebj00la]

Excellent video, thank you!

[@destinationunknown7913]

You guys are absolutely awesome!

[@mrs_radrod]

Great info. I’ll definitely be checking out this course soon.

[@PANTYEATR1]

man, that's some amazing stuff. i believe my 2002 truck uses CAN bus

[@Shiftheads]

Definitely interested in this course. Can help with ev conversions too

[@ggj666]

So glad I have a 1980 series 3 Land rover, Has about 5 fuses and that's it 👍😁

[@hpa101]

Make sure you have good health insurance, if you're daily driving or racing a Series 3 you're going to need it 😂 They have their place, ironically wiring quality is not something they have ever been well known for though - Taz.

[@ABusFullaJewz]

@@hpa101 Joe Lucas: the Prince of Darkness

[@YolunSonu1]

Great job! Will you make a video about how to learn which ID includes which message?

[@LewsSpeedShop]

I am definitely interested in this course. It will help a lot with vehicle diagnosis

[@sk8boardingsite]

I guess that might be also a good way to find the CANH CANL pair if we just measure the bus resistance while the ignition is off, because the resistance should be around 60Ohms. Of course this won't tell which one is the high and low, but still this might help in pointing out the wires we need. I am not sure how big is the deviation and changes between different CAN applications and indurties where it is used, so based on standard this should be true.

[@Carlitosway211]

I'm interested in those booms you have for the scope. I've been looking forever and can not find one.

[@changchung]

Good video. Very informative. Let me ask you. How could be possible to read the light signals, like low beam high beam parking lights brake signals turn signals dome loght and reverse? Could be possible read those signals maybe using a arduino or similar hardware? Thanks

[@nafisahmed6247]

Hi can you please tell where can I get the gateway in a Audi Q7?

[@joepastafari]

Wouldn't an rms voltmeter help you figure out which line is high and low?

[@stevelenden9023]

Hi.just watched this, very informative.i fitted a 03 pd130 engine asz to a 08 vivaro.I know now i should have piggy backed of the original ecu.. needless to say the dash is not happy and lit lit up like a Xmas tree. I tryd joining the bus wires together but no joy..is there something I can put in between to get it talking to each other? Be nice to get the rev counter working..and dash lights off..any help would be greatly appreciated..

[@tdkyt46]

Hex can Addresses are probably different and would need a translator id assume the pd190 is from a vw and vivaro being opel/vauxhal they wouldnt play nice together

[@montycrain5783]

How do you go about integrating a aftermarket ECU such Holley, Haltech, Megasquirt, Speeduino or even a GM v-8 ecm , etc… into for instance a Porsche 996 for a LS swap ? So that guages, AC ABS, etc would operate normally. I assume that means that the body ECMs needs to know about engine data from its ECU . That same question could also asked in most modern vehicles who use CAN BUS and one or more body ECMs,like any of the modern pickups out there. The general idea of Can seems easy to understand but understanding it’s language and Its ability to communicate between different brands of engines and ECUs going into different brand of vehicles and their chassis ECUs isn’t. I’ve heard use of a CAN modulator, Shield, gateway and more but tell the truth it’s very confusing to understand that part. Not the wiring or general idea of CAN but it’s cross brand integration.

[@107gunner]

AWESOME

[@roberttemple9899]

my obd2 port has power but will not connect i have bought new ecm still no start nothing any ideas would really help 700 to have dealership fix i belive has to do with canbus communication

[@ayebee1207]

I am new to this(stumbled upon)site. Check all your ground connections. All Fuses, relays, fusible links. New Ecm? Flashed for your cars V.I.N.

[@user-bj4lp3fr1o]

Excellent presentation.

[@hpa101]

Glad you liked it!

[@steveguest8028]

Thats all very well reading the bus traffic but what do those messages actually mean ?, its like reading a book in a foreign language

[@jeremyfermin8896]

Great video as usual guys keep up the good work.#hpacademyalltheway

[@hivepixels]

The CAN BUS pins on the OBD connector should be where all the data flows to as this is where the scan tools read all the modules . Am I wrong?

[@hpa101]

That data for your scan tool is coming from your ECU or various other control modules, not directly from any of the various CAN networks so no, they will not be wired directly to your OBD2 port. Would be good if they were! Of course you can look at your wiring diagram like Zac recommends here and see for yourself for your own specific vehicle where all the wires in your OBD2 port come and go to. Note that even through your OBD2 port you are limited to what you can access. This is why when we make a back up copy of an OEM ECU you need to do this via the ECU directly (generally called a bench read) rather than just through the OBD2 port - Taz.

[@hivepixels]

@@hpa101 Thanks guys. Fantastic explanation 🤝🏻

[@khanglam706]

What if Can_L, and Can_H pins have continuity?

[@111a-p2d]

Very nice informations!Thanks!

[@hpa101]

Our pleasure!

[@charliemendez1479]

Im adding a cd player from factory to a mazda 3 2020, I connected the can bus high but is not recognizing, any suggestions? Thanks

[@mikehohl4306]

You need to make sure you're on the correct network. If it's on a true Canbus network you would need to hook up to Can H & Can L to the device. It would probably need some kind of programming to allow the module that controls it to know there is now a cd player.

[@guliyevshahriyar]

thank you very much

[@alihenderson1362]

Okey forgive me a little here, if he taped into the can bus network through the gateway module or something like that it sounds like if that’s not an obd plug it’s just some module that’s unplugged how did the car run ?

[@hpa101]

Tapping into something is different to disconnecting it. Everything functions as normal, you can now just collect the data you want. Is that what you mean? - Taz.

[@webdeveloperninja9220]

Cool

[@sailingdev]

enroll link is broken

[@hpa101]

Odd, worked for me but I have changed it to this, does that work for you? - hpcdmy.co/cancomy - Taz.

[@adrianlumina22a84]

Good evening, can you please tell me what is the colour for can bus low and can bus high for Audi a6 c7 2012 3.0 TDI 204 hp, 150kw. I need this for tapping in the can bus for a sound booster in the trunk. Kind regards

[@fabiofordon9811]

Is it possible to get all Can IDs via this method?

[@JayDee-b5u]

No. Some ID's are hidden on subnetworks. The master will not tell what other id's are on the network unless you enter the correct diagnostic command. Those are usually protected by algorithms called 'seed' and 'key'. The “seed” is returned to the client(diagnostic tool) as a response from the server (car). The client then uses the “seed” to create a “key” and transmits it to the server.

[@fabiofordon9811]

@@JayDee-b5u good input, thank you. Is there a way to mitigate this at all?

[@JayDee-b5u]

@@fabiofordon9811 not that i know.

[@Ashroyer86]

Hows come all you brits know cars so well?

[@byloyuripka9624]

10:37 my man if you are talking about weed aka ganja aka the herb, blink twice!! my man: blinks twice 😉