The Trainer
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- เผยแพร่เมื่อ 31 พ.ค. 2024
- Have trouble dealing with those pesky "U" codes? This episode of The Trainer may take some of the pain out of diagnosing "loss of communications" faults.
#canbus #lossofcommunication #ucode #electrical #autohowto
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Due to factors beyond the control of Motor Age, it cannot guarantee against unauthorized modifications of this information or improper use of this information. Motor Age magazine (Endeavor Business Media) assumes no liability for property damage or injury incurred as a result of any of the information contained in this video. Motor Age recommends safe practices when working with power tools, automotive lifts, lifting tools, jack stands, electrical equipment, blunt instruments, chemicals, lubricants, or any other tools or equipment seen or implied in this video. Due to factors beyond the control of Motor Age, no information contained in this video shall create any express or implied warranty or guarantee of any particular result. Any injury, damage, or loss that may result from improper use of these tools, equipment, or the information contained in this video is the sole responsibility of the user and not Motor Age magazine or its corporate parent, Endeavor Business Media. - ยานยนต์และพาหนะ
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I want to thank you. I have a 2010 explorer with RSC alarm going off and started on resolving it months ago. I purchased the vehicle with the issue. I thought based on TH-cam it wa a faulty ABS module.
My scan tool was not high tech enough to run most of the test you referenced but you point out in the end go back to the basics, check the fuses. Well low and behold it had a fuse missing.. replaced fuse and so far problem is resolved. 👍
Got to run the drive the full cycle but either way this is a huge step forward.
Great video, sincerely thank you.
😊
Solid knowledge you are imparting.Thankyou.
Thank you Pete. Good job. Have a blessed and safe week to you and your family.
Same to you
🤔 I learned a valuable lesson a long time ago with fuses pull them out and inspect a d use an ohm meter on the legs in the last 50 plus have had 2 fuses that had voltage across at the top and when checked at the legs I had an open circuit 🤔
Nice video Pete. Thanks.
Excellent video. Your style of explaining what's going on and what or why it is happening is outstanding.
Great info as always!
Great video Pete thank you!
Great video, Pete.
Good tips thanks
Plumbers have leaky pipes they say.. Great video! Great info! But I gotta say as a field tech that sure is a lot of steps and hardware to find a blown fuse 😅. I just bought an Autel ms906ts pro I love it so far. But It don't have that topology feature unfortunately. I'm currently tracking down an intermittent can bus issue on my own personal truck. Stopped by this video to brush up on some diagnosis steps to track it down. I have a good feeling I'll find water intrusion due to a sunroof leak. Just need time away from fixing customer vehicles so I can fix my own 😅
I had a similar problem with my f150..the ac would not work and the guage cluster was acting wacky with lights turning on and off and the needles sweeping. Ended up being a shorted wire running along the wire chase on the drivers side.
New subscriber here, just wanted to thank you for sharing your knowledge with this community. Happy holidays!!!
Welcome to the channel!
Excellent presentation Pete.
Glad you liked it!
Looks more like Motor for the Aged rather than Motor Age
a lot of information
thanks a lot
Love this channel thank you
Thank you too!
👍 good stuff
Thanks
Pett, AWESOME and very good information you been teaching always enjoyable thanks for sharing cheeeeeers
L no I’m
lol Ollo
lol I’ lol l I’m
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Nice video i check my between 6 and 14 and only have 120 ohm any suggestions i unplug all modules and still 120
thanks for the video master
You're welcome
Pete i like seeing you in enhanced mode good video thank you !!
If a fuse blows, there is ALWAYS a reason. Find that reason and accomplish two things... Prevent a come-back and become your customer's hero!
More blessings 🎉
Hello, Pete. As far as I know, the module transceiver is responsible for the voltage differential in the CAN NETWORK. If you have a bad transceiver, how would you find the module with the bad transceiver? Would you have a U code?
The best way to find the bad module is to monitor the CAN signals on a scope while you unplug the modules on that network one at a time. When you see the pattern return to normal, that's the module that has failed. Start with the modules that are easiest to get to...
Thanks for another AWESOME video, Pete, ohh Btw did you get any further why that fuse had blown in the first place ? just curious 🤔, BLESS 😇
It appears it was a vibration failure. No problems since!
@@MotorAgeMagazine ohhh that's great, all sorted !! well done, as ever, Pete. hope you had a nice break, take care, BLESS 😇🙂👍
Experience diagnosis. Tec. Nice video saludes noel matute
Please I want to learn more about schematic
Seems modules communicating fine and data passing along can h and can l but no comms with any autel. What reasons could cause this
Hello, Pete. The terminating resistors complete the CANBUS circuit, I would say. How do you get voltage in the CAN lines if you disconnect a module containing a resistor? Thank you.
I went to an expert and asked. My friend Bernie Thompson at Automotive Test Solutions (th-cam.com/users/AutomotiveTestSolutions) says, "In CAN each module or Node is a multi-master. That means that each module can supply the CAN voltage on the Can com wires".
@@MotorAgeMagazine Bernie may be talking about the Can transceiver.
Bravo...........u look old school.......computer..........how old is the can....bus.....system........?.........cheers
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.
Could be an intermittent problem. Have you tried clearing the codes to see which ones remain active? Typically, the one module the others are pointing their fingers at is a good bet to be the one with the issue. But make sure it has what it needs before condemning it.
what blew the fuse?
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.
What kind of vehicle and what brand scan tool are you using?
@@MotorAgeMagazine
The vehicle is a 2011 Gmc Savanna, 4.3 l v6 vortec.
The scanner is an Autel 909.
@@elgroso806 So you are able to perform a full system scan? Do you have the topology mode on your tool?
If so, take a screen shot of the completed scan and send it to pmeier@endeavorb2b.com
@@MotorAgeMagazine
Yes, I'm able to perform a full scan.
Also, I have an Autel ms909 and I'm able to see the topology.
I'll get the photos and I'll send them to you.
Thanks for answering.
that piercing was extreme 13:48
Need to know what this numbers meemon a 2002 S. 10 2.2 the numbers are DLC 150914 3:02
Algorithm boost.
Blasting music does not add to the video.
that wasn't very satisfying. fuses are the first thing i check and it's never the fuse. I have a u1900, brake light, abs light on
Are you able to do a full system scan to see what modules are, or are not, communicating on the bus? Do you have access to a scope? This newer video may be helpful: th-cam.com/video/5gYNX-h_rKQ/w-d-xo.html
So basically those of us that do not have the scan tool are out of luck.
Any quality aftermarket scan tool will help you diagnose communications faults, especially when paired with a scope. Basic code readers here are useless.
@@MotorAgeMagazine all I have is a Carista with the full version app.
No , basically all just lift the hood and check the fuses. No need to have thousands of dollars with of equipmen. I learned how to check fuses when I was 7 years old. But these automotive channels need to produce videos with dramatic content. I can't believe all these comments saying good job .....does anyone not check fuses anymore 🙈🙈🙈🙈🙈