How to do Automotive CAN BUS Voltage Test
ฝัง
- เผยแพร่เมื่อ 10 ธ.ค. 2019
- Using the www.autodiagnosticsandpublishi... or OBD-2 Diagnostics Meter and analyzing CAN Network voltages is the object of this video. See how having the basics of CAN Networks can help you diagnose these systems.
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The OBD-II Health Checker is now shipping. This unit was in backorder/sold out before, but we're now back on schedule. See it here.
www.autodiagnosticsandpublishing.com/OBD_2_DLC_Health_Checker.html
See my Ebook on Automotive CAN Networks here... www.autodiagnosticsandpublishing.com/Automotive_Diagnostic_Repair_Book_Catalog.htm
Thank you for the information it was very helpful.
Thanks, subscribe to our site.
autodiagnosticsandpublishing.com/
Thanks for your information on CAN BUS.
Good job to Explain
The OBD II Health Checker you are showing currently has a 1 month back order as of 4.25.2022 due to the chip shortage, I just tried to buy one ($761.00 OTD), I’ll be trying again in about 3 weeks
I received an update from the chip maker at an ETA of May 20th. So hopefully we'll be good after that.
Fantastic, thank you.
www.autodiagnosticsandpublishing.com/OBD_2_DLC_Health_Checker.html
Excelent channel My Friend
Very good video sir
Thanks, DONATE: www.paypal.com/donate/?hosted_button_id=F9W5VPHTGWBV6
Thank You , Most excellent video in dissecting the CAN circuit . Information that Books won't tell you
Thank you, actually you can find my Ebook here on Automotive Netwroks www.autodiagnosticsandpublishing.com/Automotive_Diagnostic_Repair_Book_Catalog.htm
Ang galing naman!
Ok
amazing video. what if there is more than 2 termination resistor(ford uses that).please do one on flex ray and star connection
thanks
Hi, ok there can only be 2 termination resistors on a CAN Network (2008 up). Take a look at my newest OBD-2 Network tool, the OBD-II DLC Health Checker. www.autodiagnosticsandpublishing.com/OBD_2_DLC_Health_Checker.html
Thank you
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EXCELLENT
Thank you.
Hi thanksyou
Good video
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Very good bro
Thank you...
autodiagnosticsandpublishing.com
Is it necessary to disconnect DC power while measuring resistance,
Thanks good job ❤
I have a problem with my camry 2007. The ABS and BREAK indicator sometime is a ON/OFF,. INTERMITTENT... . The four speed sensors are OK., and the speedometer and a/c and also the temp meter are affected. My scanner say is that COMUNICATION MODULE BUS OFF. is that mean the ABS MODULE is damage?
Hi, question, 2008 dodge caliber, I can communicate with every module except the TCM checked powers and ground at the TCM they're good, back probe the can high can low wires at the tcm connector I have the mirror signals, replaced the TCM and still no communication, do you think another module can cause the problem??
Well, if you had communications then it's not the CAN network. Look into your gateway module, which controls who's communicating.
Good...
Thanks
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So, if I'm correct the High CAM and Low Can have a DC voltage offset at 2.45vdc but have a delta of 2 Vdc. So, if the Negative signal is 1.5Vdc then the positive signal should be 3.5vdc.
Yes, that's correct. Search my Network Ebook here.
www.autodiagnosticsandpublishing.com/Automotive_Diagnostic_Repair_Book_Catalog.htm
Superr sir!
Thanks, see my site here. autodiagnosticsandpublishing.com
What scanner you use to analyze the network please? 07 infiniti M35. Im not sure ifithas a gateway. My snapon scanner can only talk to Ecm tcm abs nd airbag. All other computers no communication. Thank you
Two different things, scanner and network analysis.
Great video thank you so much
👍
Good day. Im hoping you can advise me with a problm I have. I own a W210 E 280, that only has the 38 pin connector under the hood. I cannot connect to any module on the vehicle. I have tried several scanners, including the MB Star, Launch X431, Delphi as we ll as iCarsoft. Neither of them connect. I have voltage at the DLC, I checked resistance between DLC ground to chassis ground and its good, as well as good battery voltage at the DLC and thats good. I cannot connect to any modules. Pls can you advise on what to check next?
Awesome video with great info. Thanx for the video
Ok, coincidentally I have a usef Autodiagnos European Breakout Box for sale. It looks at all your ECM Pins and detects issues. Text me at 201 674 5003 so I can send you photos.
What if I have 40ohms across pin 6&14? I also have 60ohms coming out of a module connector with it unplugged but 120ohms going in from the resistor. With the connector unplugged shouldn’t the reading be overload from the wires going to the next module in parallel?
Not really... 60 Ohms or 120 Ohms if one termination resistor is out.
So if pins 6 and 14 show 0 for resistance im looking for a short and not failed moduel
It means your CAN lines are shorted to ground.
Hi, what is the highest and lowest voltage (ie Dominant and recessive voltage) for medium speed and low speed CAN. I heard it is 0 to 5 volt can high and 0 to -5volt can low for medium speed, is this true.
1.5 and 3.5 volts CAN low & high.
@@ADPTraining Nope. I am looking for medium speed NOT CAN HIGH speed.
Thanks
ok thats good, i am waiting
Here it is back in schedule. www.autodiagnosticsandpublishing.com/OBD_2_DLC_Health_Checker.html
Can I'm by pass can bus signal.
Example :
I want to install power sliding door, the controller used can bus 2 wire.
But my car don't have the can bus system.
Any idea for this ..?
You can remove CAN bus and use some other control type, like direct electrical control.
how do you find the gateway ?
my 2015 jeep jk 3.6 only has 5 wires if i Rember correctly to DLC when i plug in CAN H AND LOW to my scope it only shows 2.5 x2 with math ch. total of 5v KOEO i dont get a normal can network
signal. i think with engine running it will show a normal can network signal. any ideas? thx bob
This CAN voltages sound right. You may have a shorted module dropping the network.
do you think because my ecm/pcm has been unlocked to run a tuner for that year jeep
In edc17c55 ecu, how many eeprom and microcontroller have. Plz reply me
1 Tricore
Mitchell
I am facing a Land Rover 2003 DLC / OBD2 connector that is not following cavity 6 and14 as CAN High and CAN Low lines... Instead those cavities are empties..
Is not CAN
Hi, I'm turkey Istanbul from you I have a tool that will be a question for automatic transmission problems i have vehicle access transmission I made new, but the tools in place does not get (P.R. N. D. 2.1) ..... D. When I get to the location you're too slow to it. The problem is what do u think. Solenoid problem caused by the relay whichever I would appreciate if you help my vehicle 1600motor automatic 1998 model Proton. I have a mutsubisi engine
Question?
I get 1,57 V on can high and 0,57 V on can low. Mercedes w211. Is this normal ?
It's all in the video. Watch it carefully. See my Ebook on networks here.
www.autodiagnosticsandpublishing.com/Automotive_Diagnostic_Repair_Book_Catalog.htm
Measured resistance 6 to 14 and got 500 ohms on a dead car what happened?
07chevy silverado 1500 if it matters
60 Ohms that's two 120 Ohms in parallel.
Hello from Nigeria, I'm patiently waiting
Thank you, it's already uploaded. Follows me on Instagram at adptraining_youtube
I'm following you on instagram already
To my knowledge CAN high is yellow and CAN low is green at least in heavy duty diesel. Is automotive industry different?
Ok, DLC Pin 6 is can High. The colors can change between manufacturers. No pun intended. Working on CAN networks, see my Ebook and my CAN or OBD-II Health Tester here.
www.autodiagnosticsandpublishing.com/OBD_2_DLC_Health_Checker.html
www.autodiagnosticsandpublishing.com/Automotive_Diagnostic_Repair_Book_Catalog.htm
🤔
What happens if you measure the resistance over can lines to be 120 ohm, but everything is working fine in the vehicle?
120 Ohms means that one of the 60 Ohm resistors is gone. That won't bring down the CAN network, but you may get U or communications codes here and there for no reason at all.
Thanks for your response. With my can bus reader I get no information from the port. The voltages between the any of the lines and ground is 2.45, voltage between them is 0. I was expecting a voltage difference when the vehicle is turned on
@@wilfredr980 exactly. this is just an ad for his stupid gimmicky device
What if the moduals communicate with the scan tool,but they don't communicate with each other.they say lost com with "blank" modual. Different moduals lost com with others but all com with the scan tool. "2011 dodge charger"
See my CAN BUS Ebook at my site.
autodiagnosticsandpublishing.com/
I have a no communication issue with tpms module. I have 60 ohms between can high and low, 2.6v can high to ground, 2.4 volts can low to ground, but I have .54 volts between can high and can low? Do I have one of my
resistors shorting to ground?
One resistor is gone. CAN will work with one but not very well.
@@ADPTraining wouldn’t I have 120 ohms if I lost one resistor?
Also, I measure 98 ohms between can high and ground and 98ohms between can low and ground obviously with power removed.
My honda accord 2018 only have 120 ohm and i think coming for the gateway module whent i unplugged the 120 ohm going but i still missing the other 120 ohm i dont not what module have the other 120 any help please
This is why you need to inject voltage and 120 Ohm termination resistor on a CAN using the OBD-2 DLC Health Checker.
www.autodiagnosticsandpublishing.com/OBD_2_DLC_Health_Checker.html
@@ADPTraining i found out i have 120 ohm and the gateway and 120 ohm and female plug but my odb2 only have 120 no 60ohm
Any link for the graphic multmeter?
Here it is: www.autodiagnosticsandpublishing.com/OBD_2_DLC_Health_Checker.html
@@ADPTraining thanks for your prompt response. How about the network analysis
Hello.
I have a problem with a can bus.
No u codes.
I can communicate with all the modules but i can't get live data.
As soon as I try read the live data on any module, the scanner takes me out and display a message of no communication.
I have literally done everything.
I don't really know what else I can do to diagnose the can bus system.
Year make model please. Email me if possible.
@@ADPTraining
Please, provide me your email.
Good advertisement. Sold!
You got it. Check it out. You won't be sorry!
www.autodiagnosticsandpublishing.com/OBD_2_DLC_Health_Checker.html
What would cause me to have 6 volts combined on hi and low instead of 5 volts?
Faulty multimeter or bad module.
Selenoid code resset 1998 model Proton brand mutsubi compatible 1600
?
You need to make up your mind sir. You show a picture of dominant and recessive state but in your explanation you tell the opposite 🤔
It is clearly stated, 2.5v on high speed CAN is receive.
@@ADPTraining : No, he is absolutely right. Recheck your training material! @12:54 your picture states that dominant is when CAN_H and CAN_L is at same voltage! Dominant occurs when can-H and can-L is pulled apart.
Yeah that little typo in the "signal recessive and dominant states" diagram confused me as well... But this was still an excellent teaching video. I think this channel has some of the best in depth videos on automotive electrical systems. 👍
all ADP training videoshelp me thank you
Thank you 👍
Hay
Video comes out Dec 11...
Hello
Sorry for late reply please send your what app number
Good information but kinda hard to follow due to teaching tactics and verbal communication, too much studder and uh-uh-uh and mistakes in explanation and correcting yourself, was losing me. Other than that good information. Thanks
👍
Ok
Dosnt anybody audition these people. Uh uh uh
It is worth to mention that ,even on a CAN network many computers can be found ,the two 120 ohms resistors are located in those 2 computers which at greatest distance one from another
Yes absolutely, and almost no info is found in where these resistors are.
It's also important to know that if there's a gateway module, as us always the case today, then there are multiple CAN Networks, each with its own 120 Ohm resistor pair.
@@ADPTraining can u explain that for me please because my car have a gateway module but i only have 120 ohm coming for the gateway the other 120 i missing or how that work
Up
Info is good, but the video would have been much better if you quickly showed your product and moved on.
Or I can just show my product.
www.autodiagnosticsandpublishing.com/auto_repair_equipment_catalog.html
@@ADPTraining or you can change the title from "How to do Automotive CAN BUS voltage test" to "Ad for my product that does auto voltage test"
سلام وهزاران 👍 وتشکر لطفا بزبان فرسی زیر نویس نمایید....👍. .
all he was saying voltage between T6 + G and T14 +G must be 2.2-2.5 with ignition on. and resistance with IG off 58>62.and when the car running T6 and G 3.5 and T14 around 1.5 .you can do all that with meter.i hope it help
www.autodiagnosticsandpublishing.com/OBD_2_DLC_Health_Checker.html
Batebi, no you can't do that with meter. DMM are RMS or averaging tools. No use in network testing. What he's saying makes sense, but while running he's only seeing averaging voltage. See my new tool the OBD-II DLC Health Checker.
Please use simple language or write in English subtitles
autodiagnosticsandpublishing.com
You're welcome to contribute to the subtitles. I provide these videos for FREE.
@@ADPTraining thanks bro actually I can't understand English if you right I can translate from Google
@@ADPTraining thanks bro actually I can't understand English, if you write i can translate from Google
Ok, if I have to pay someone to translate then is not cost effective for me to do that. So the right thing is for you to learn to speak English.
www.autodiagnosticsandpublishing.com/scan_1_obd2_auto_repair_scanner.html
not plugging Mr, bob meter yeah right
My new #OBD-II_DLC_Checker is now available. www.autodiagnosticsandpublishing.com/OBD_2_DLC_Health_Checker.html
Mr BOB DLC is still for sale, but this little units is more expanded, handheld, so no PC.
This new unit is fully multiplexed and has a small built in Oscilloscope.
What happened to buying old car and or cabin air filter was cursed then the driver breathing bad air over time would created bad omen follow person the rest of their life then who responsible
? 🤔😩
Informative
The Old cars they haven't cabin air filter
Informative
The old cars they haven't cabin air filter
Not sure if this is a training video or an ad for some gadget he thinks is the greatest tool of all time. The guy sounds like he was bragging to some drunk at a bar about everything he knows about CAN bus! With all the repetition and foreshadowing, it is nearly impossible to follow and painful to watch!
This is a unique tool and if you want to diagnose CAN Network issues then you have 2 choices. Grab a scope, resistor Load, power probe, somehow link all these together, and also a multimeter. Add a CAN Bus transceiver and good luck.
Otherwise use my tool, connect to the DLC connector and done. Just follow the menu. www.autodiagnosticsandpublishing.com/OBD_2_DLC_Health_Checker.html
You're welcome to also read my Automotive Network Ebook.
www.autodiagnosticsandpublishing.com/Automotive_Diagnostic_Repair_Book_Catalog.htm
this is a complete waste of time, if you want to diagnose can bus issues, get a scope, and do it properly, if you think you need to buy some stupid gimmick, you obv have no clue how to diagnose a canbus system, and should take your vehicle to a technician that is able to do so. period.
So what is the proper recessive CAN VOLTAGE on a 3.3v CAN Transceiver?
Thank you
Appreciated...