CAN this Crashed Caddy Communicate? (ABS-Steering-Airbag...2014 CTS)
ฝัง
- เผยแพร่เมื่อ 4 ส.ค. 2023
- This 2014 Cadillac CTS AWD was towed in from a fellow TH-camr's body shop to diagnose a CAN Communication fault.
The ABS, Power Steering, Steering Angle Sensor and Airbags cannot talk to each other!
Let's take a logical approach and pinpoint this CAN fault efficiently.
All we will need for this diagnosis is a scanner, OEM wiring diagrams, a good ohm meter, and your BRAIN :)
Check out Todd at UNWRECKED:
/ @unwrecked
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Enjoy!
Ivan - ยานยนต์และพาหนะ
Thanks again for diagnosing this for me!! Currently pulling the head off the engine as i type 😒😒
Good luck with that, Todd! 🤞😎
@@PineHollowAutoDiagnostics also a correction here. I hate doing bodywork but I'm good at it 😂
You made a good choice in diagnostician my friend. Good luck with the car.
@@UnWrecked Being good at what you dislike is the perfect irony.😂😂
Thanks for helping Todd!!
Ivan i cant thank you enough for your vids man. I took the jump to be a diag tech and watching how you systematically split the systems has made me 300% faster. I used to be nervous/ avoid networking issues a but after your videos and training myself its made a world of difference.
That's awesome to hear! Network issues are actually really fun to diagnose... Well except for the intermittent ones 😜
Good for you, brother. I hope you have a prosperous career. If you master your craft, you'll have no problem being a millionaire by the time you retire.
Beautiful! Making me feel like I'm working on a Saturday... LOL
Splitting CAN networks is so crucial to finding faults like this, and it's even better when you have 2-3 body techs and a shop owner looking over your shoulder telling you you're crazy, the damage couldn't possibly be THERE, and then...Doink! There it is! Shop spent a week on it, you fixed it in 20 minutes. Love it!
That's got to be one hell of a good feeling, my friend. Working around other top mechanics, and you come in and shine like a star and tell them there's your problem, ladies. 😂
Very well thought out diagnostic procedures.
All the steps from RPO and OE diagram use saved hours in my estimation.
Double checking the pin out when it didn’t jive with what you expected was being very thorough.
These steps don’t come natural to the average nut and bolt technician.
I’m 7 yrs retired from this. Saw some of it before 2016 but not to the extent now.
This half blind broken down 69 yr old car tech sure loves living out his love of fixing electrical problems thru you now. Thanks a bunch.
Del
Reminds me of my days in the USAF as an aircraft mechanic. Except there, our wiring diagrams were HUNDREDS of pages. Same troubleshooting process: split the system and test, split and test, etc. continuing to narrow it down until you find the problem. Not a hard process, just time consuming. Add in a malfunction that only occurs when aircraft (fighter) is in a high G maneuver…that my friend will cause many sleepless nights! Thanks Ivan…enjoy watching you work…because I don’t have to. 😂
So many skill sets applied here!! Great tutorial on chasing down an open in a CAN network, Ivan!
Yes it CAN! Sorry, I had to say that 🙂
Great diagnostic and repair, Ivan! Being a crashed vehicle, I was expecting more wires damaged, but apparently only that one was roughed. Impossible job without the network diagrams and the right mind to use them.
LOL CAN Jokes :-D
@@zx8401ztv 👍
Hams and RF engineers immediately recognize the balanced transmission parallel feed line of the CAN. The terminating resistors at each end keep the reflections (SWR) down to a minimum and are critical to the proper operation of the transmission line.
Amazing job! And of course, nice tools! Scanning tool, multimeter... Yet the most important is a cool and smart brain, which is by far the most important! Without the correct logic, nowhere to go, that is the same in every single diagnostic job. Be it electronics, be it programming, be it being a doctor treating patients, you name it!
Again, thanks for sharing, Ivan! Now every time I open up the TH-cam main page, the very first thing I am more than eager to see is your update.
Nothing better than watching a Pine Hollow video before I go out to work on the ol’ Cherokee in the garage!
Great vid quick effective diag terminating resistors come in handy for fault location checks. Diagnose Dan did a great vid explaining terminating resistors and CAN networks after watching that can follow your can fault finding stratagies and understand whats goung on. Thanks again Ivan your vids make my day.
Not many people do like electrical or are very good at it, which is what makes you and Eric O very special.
Amazing diagnostics. Being able to read and follow a schematic is half the battle
HE WENT FROM NO EXPERIENCE TO BODY PANEL SWAPING...HE IS SMART...SMART ENOUGH TO GRT IT TO U.....LOVE U BOTH....
😁
@@UnWrecked MADE THE RIGHT CHOISE....LOVE U AND THE FAMILY.......KEEP IT UP..
Congrats to Todd for enjoying doing body work, people who do are few and far between. As for this car, with all the electrics and repairs needed and already done, I'd steer far away from buying this one.
I wonder if anyone will add this to VINWiki. I think the VIN was shown on the RPO tag.
As someone currently training to be a driveability tech this process is exactly how general motors teaches its technicians down to the T. The process is identical. Great video
Great to see that Todd reached out to the Guru.
I knew exactly who I needed to take this too after I struggled for weeks!
Another save by the Jedi Master and Thanks so much for bringing us along. You knowledge and patience is amazing Ivan and you have such a great attitude in your work and it is inspiring to watch. Thanks so much also for introducing me to the awesome soldering iron as I bought one a while back after seeing you work with this one and it ROCKS!!!!!!!! Take care Ivan and have a great weekend!!!
Yeah the TS100 soldering iron is the bomb ;)
Every time I watch I learn. Your troubleshooting seems slow at the beginning but methodically and purposefully you get right to the problem. Others just start swapping parts. I am amazed. Great video!
Well over half of the time in a diagnosis is spent doing research and coming up with a solid game plan 😉
You are an educator beyond compare. After watching all your videos I have become 10K times better at understanding the scan tool and it's functions. Unfortunately I grade myself at about 8 to 10% of what would be considered adequate. Well time is on my side. With your videos and time I will become a master. BUT at almost 77 years old, don't bet on me. Unfortunately I am at the point that I know enough to make people like you earn a lot of money fixing my OOPS.
Outstanding, excellent deduction and eventual conclusion. I know I burn you for some of your repairs, but this was excellent. Good job!
Crashed and disassembled cars is all i work on so I'm very interested in this episode
Nice they kept it in pieces for you, made it easy to get to that one connector. Plus gave a little insight to where the damage probably is ... and was.
That's probably the only advantage to collision work, except when they hurry to put it all together without diagnosing. I saw that happen once and never saw anyone look at a wiring diagram. A tech started checking fuses and mumbling about relays hoping for a miracle that never came.
Much appreciated you sharing your adventures with the community.
Great video as usual, really enjoy the wire chasing videos!
The real proof that resistance/ohms/continuity test with the Dvom can save the day. Ohm check for the win!😊
Thanks for explaining things as you go along Ivan. A great lesson in every diag from Pine Hollow!
You know a Guy is on His game when He makes this stuff look like child’s play. Great work Ivan and thanks for sharing. 👍👍🇺🇸
😁👍
I must say Thank you!
Every vid of u, is always impacting a lot on me! Kudos Ivan😊
Great breakdown on this one Ivan many thanks for sharing keep up the good work cheers 🇬🇧
Simply awesome diagnostics Ivan. once more you show your skills PHAD Rocks!
Nice trick for that holding the wires together
Great diag and triage. You explain it well.
Amazing diagnostics. Very knowledgeable and informative video for techs.
Nice work Ivan! Network diagnostic/repair with no scope & no parts required, brilliant!
Outstanding diagnostic ability on display here.
Thank you for sharing your insights and information.
It was pretty clever of GM to have redundant channels on the network for precisely this reason.
As in our emails about my case study RPO codes needed for a good diagnostic, Nice work as usual my friend.
Nice work as usual Ivan!
Front clip off certainly helps.
Thank you for sharing your expertise
great video , good job Ivan
As a retired electronics engineer I urge you to learn how to use the audible connection checker on your meter.
Or get a meter with this facility.
This works with setting an ohms limit where the audible alarm sets in.
In this example of your fault tracing, setting the meter to a 200 ohm limit, you would get an alam once the wiggle causes a temporary connection.
Frees up your eyes and hands for the physical testing ...
I HATE beeping things 🤣
Ivan. I have learned more by watching and putting into practice, your common sense diagnostic approach. Thanks twenty times!
Ivan . Your talent is such a pleasure to watch.
Awesome work
Nice and methodical video as always! 😊👌
Todd & Ivan ... The Dynamic Duo!
Zz- sea
Good methods and find Ivan. 👍💪💯
Great work as usual👍🏻
This is a very complex system that you fixed in 20 min's, I'm sure for a lot of Tech's this job will take day's to narrow it down😇
Thanks for sharing BRO, Stay Safe😍
I understand doing things you hate because you're good at it. I once made a living doing drywall finishing because I was very good at it. I was a good car painter too. I only do those things when I have to. As an adjuster I totaled a car because the shop was unable to diagnose a wiring harness break on a minor damage GM subcompact. It had an interlock that required the car go back and forth the interlock shop each time it was opened up..
Wow amazing job there 👍💯 I learned a lot there . Airborne
Great find, Keith's tug test for the win again! Another great resource on GM is the Data Link References chart, it breaks down every module and tells you what Bus it communicates on and how many different Busses.
Great video and fix as always Ivan. That soldering iron looks sweet, going to order one.
Good work, Ivan. I hope I never have to do that sort of repair. I enjoyed your video.
Nice problem found and solved👍
Great job finding that break so deeply buried in that Cadillac carcass!
Incredible. Thanks Ivan!
Great Video! Thank you. The terminating resistors remind me of the old scsi bus
The old skool "wiggle"test comes through again .Great detective work finding where to wiggle by Ivan
It's crazy that the wire was 99.9% broken but still showed 6kOhm of resistance haha
It's always a good day when Ivan's in my living room 😊
Good stuff Ivan.
Fantastic job
You are a master mechanic.
Hi Ivan, very detailed step-by-step diagnose which also shows the importance of having a diagram. I guess your resistance reading of around 6 kOhm was due to humidity-caused corrosion of the wire. The wire insulation was probably damaged by the crash.
Good job!
26:04 I yell at the auto off too but honestly its the only reason my meter works because I leave the battery on all the time. My low amp clamp gets a fresh battery every time I use it.
haha "auto-off" is a blessing and a curse xD
It's even worse when your multimeter blanks off the ports and opens one's to insert the leads to what setting you are on. My multimeter got dismantled and modified
Thanks Ivan...
Another stellar job
Such great videos. Keep it up! 🇺🇸🇺🇸🇺🇸
Nice work brother 😎 on to the next one!!
That was a really nice diagnostic 👍
The only car that went "smoothly" that week 😂
Is nice to have bodywork off so you can trace the pesky missing wire lol. Nice to have the OE diagram! Great job Ivan!! Lol.
Diagnosis from God. Great work there Ivan!
Oh, Ivan-Wan Kenobi, You're our only hope! 🤯👍👏👏👏💯
Well done..
I definitely think you should replace the Power steering module just to be sure it's fixed!
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.
.
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😂😅😂🎉😅
Nice job!!
Brilliant diag as always 👍🏻!
..but no jack stands😮 21:48 ..
Amazing diag! You are no doubt a Master Tech.
I have learned much from you Ivan San. I have learned I can't do half the things that you do! Lmao. 🇺🇲
Ivan San...is that Japanese? :D
@@PineHollowAutoDiagnostics lol, yes.. Although I am not Japanese. Consider that a "term of endearment." A sign of respect, if you will..
Bring back the days of a ground wire and a power wire and no bus network
Thumbs up Ivan, you did it again!!
This diag went surprisingly smoothly haha
Thanks to Todd for all his work and info for Ivan.
Thanks to Ivan for showing us where the wire was broken.
Previously when I worked in the DWP City Fleet, the Body shop there would leave the fenders off if wiring harnesses got damaged, or they would remove them if I asked them to, which was great. Some older Navistar/Internationals with the one color (all black) wiring harnesses that had numbers on the wiring made it interesting to work on. Really interesting if we didn't have the wiring diagrams. Good Times!
Thank you Ivan for this video!
Todds Cool
Freaking Amazing Diagnostic 👍
That’s a FAD
Well done Ivan 😀
That was hidden too well lol.
Lets hope that there are no more R.T.B (Ready to break) wires in that harness.
Sorry I'm dooming it lol.
Man this guy is intelligent
My wife watches your videos. As a matter of fact. She's about 15 minutes behind me. Which gives me about 30 minutes to come up with a way to convince her that her car has "fancy all wheel drive" Thank your daddy kids. THANKS DAD! LOL Great videos. 😂
Brilliant
U can work a lot faster with those wrecked cars, when half the bodywork is removed. LOL Good fix Ivan.!
Way to go Ivan. You hung in there and found the problem.
Well yeah can't just give up half way through the diagnosis 😅
@@PineHollowAutoDiagnostics many do. That's why they come to you.
120Ω is the terminating resistor value at the end of the data line. Prevents ringing on the lines.
Great video and diagnosis as usual! Love your analytical approach to narrowing down the location of the problem. Very surprising that the outside of the harness did not show any physical damage. Wonder how just that one wire got broken and all the others looked OK?
Probably defective from the factory. A broken wire inside the insulating sheath can function as long as the fractured ends are making contact and the conductor is not required to carry a lot of current. Given enough movement, in this case an accident and contact was broken.
It was just a slight pinch of the harness by the radiator during the collision, and the thin CAN wire got slightly compromised is my guess.
Another successful diagnosis & repair. if anyone can find the needle in the haystack it’s Ivan 👍
I put a temporary kink in wire to hold shrink in position, keeps the digits away from heat. If it's a horizontal wire, kinks at both ends of the shrink.
These vids are a nice fix for this retired tech. 👍
What if wire isn't long enough to kink? :)
@@PineHollowAutoDiagnostics I've never run across that situation. Which makes sense as you have to have enough free length on the wire to slide the shrink away from the soldering heat so it doesn't accidentally shrink the tip of it. All it takes is a tiny bend of the wire @ end of shrink to hold it in place. Also, in situations where the shrink wants to wander back near the solder point, I'll kink the wire to hold it away from the soldering heat.
@@angelr8892 I just start shrinking the tube at the opposite side of my finger so it doesn't slide out of position 🙂
@@PineHollowAutoDiagnostics I used to do that too until one time when I was inside a tight space in a sorting machine. Really restricted access/vision. And I accidentally nailed a finger tip. That's when I learned to get kinky. Better safe than toasty. 😜
Thanks!
Much appreciated 🙏🙂
The soldering iron you have IVAN is a TS101 from Amazon
what did we prove ? ivan knows what he is doing
32:55 you scared me, _"...blown head gasket..."_ and my first thought was, "If that car has the Northstar engine, Todd is screwed." Fortunately, it appears that the Northstar wasn't an option in the 2014 CTS, this one has the in-line 4 cylinder.
It used to be that cars had computers but now computers have cars
That was some Eric O. s*#t right there. XD That dude can smell broken wires.
It's crazy that the harness had absolutely no external damage. Must have been pinched just enough to harm that one thin wire!
Awesome
I'm with UnWrecked hate automotive wiring it's always in the last place you look.Cheers mate.A small tip when you are shrinking the heatshrink in tigth places use the tip of your soldering iron.Hope this is of some use.