Bernie Diagnosing a CAN Bus issue on a 2005 Mini Cooper S

[@jorgevalencia5459]

Bernie all the mechanic KZbin channels are watching you very closely. Yet none of them give your products or your channel the credit it deserves. You are definitely a grand master in the field and your legacy is one of a kind. I can’t wait to buy your products and follow your footsteps.

[@herbertwatson5101]

He said a little knowledge man this guy is humble trying to get on his level every car he looks at teaches us so much

[@davidbell4913]

Exactly what you said!! I'd like to know or learn what he's forgotten

[@jeremyah78]

Treasure trove of knowledge!

[@Mr.G-]

You are the GOAT. It’s amazing to see a master at work. Thank you , for your videos.

[@tomgifford7772]

Another home run from Bernie!! Thank you so much for the time and effort you put into sharing your knowledge and expertise - so helpful and inspiring - Thank you again!!

[@spirokattan3655]

Another remarkable diagnostic journey with Bernie. Thank you Bernie! I wish you and your family a Blessed and Happy Holiday season!

[@amjadzidaoi4011]

I have printed ALL your articles published in Vehicle Service Pros website and you can't imagine how much they are helpful and informative to me. I can't thank you for all knowledge and skills you're providing for us. Please take care of your health and of yourself, great master.

[@smartnwogu8316]

Hello, please how can I get those prints. I would love to know more. I would appreciate if you can help me

[@shakeelsss]

Unbelievable !!! . One case study is like a semester course of knowledge. Thanks once again.

[@alrifainidal]

He is the legend . I wish for you the best

[@foxholewilly]

Another "hold my beer" victory for this legend. Bravo!

[@RAVETOR]

hahah good one

[@djmobileautoservices]

There aren't much videos I watch but whenever Mr Bernie releases one. It's a much see. Of late thou, I'm not sure if you are having trouble breathing. Take it easy. Thanks for the video

[@yamaha37776]

Thank you ATS automotive! And thank you Bernie! Support ATS y’all!

[@richardcranium5839]

great case study. makes me wonder if the dash is indeed defective or is it a part revision or substitution for which there should be a bulletin on or just a wrongly numbered part. would be interesting to look up the wiring for different years to see if can high and low are consistantly the same pinout and the part number remains the same.

[@SuperMarioDiagnostics]

I love it when Bernie brags just a bit, “And i fixed it” hell yeah! Very nice work Bernie!

[@crasher88]

Man you could hear the excitement in Bernie's voice

[@johnriley215]

Would love to have a fraction of the knowledge you do Bernie. Great job and you make it look easy.

[@spelunkerd]

I did a video a few years ago on one of these old minis. That ended up being a K bus short to ground, found after exhaustive search. While poking around I found the DLC is like this one, not attached to the CAN bus. Interestingly I stumbled across an unattached terminating 120 ohm resistor inside the connector for the DLC. Presumably they had designed the DLC to accept a new design including the CAN bus for upcoming years. By the way, this video came up as only 360p resolution, a little hard to read the details of your scope. Great demo, one to remember!

[@autodiagyt]

Did you compare CAN H at your steering column connection to the CAN H wire at the center dash to make sure the harness wasn’t spliced wrong somewhere?

[@leefhead1]

thats the same thing that immediately came to mind for me when seeing the inverted messages

[@PineHollowAutoDiagnostics]

Maybe connector X15 by the driver's kick panel? Diagnosis definitely needed one more step to determine "crossed wires" vs "defective new dash" :)

[@autodiagyt]

@@PineHollowAutoDiagnostics agreed, especially when supposedly the original issue was water damage. That usually gets a connector with crusties in it. The connector in the video looked perfect. The odds the wires got swapped somewhere is much better then the circuit board is wired wrong. I feel like Bernie missed a critical test here. Not like him at all so just goes to show nobody is perfect.

[@RR-bt5xv]

@@autodiagyt maybe nobody is perfect but he is the closest i have seen doing diag

[@larrychristopher9147]

Awesome diagnostics

[@bobgall863]

So is the problem with mfg. of the new module maybe a revision level that was not documented or just built incorrectly?

[@noelconnor8539]

You are pure genius

[@tonyfremont]

This is weird, that i can agree with. Two replacement dashes dont work, but turns out that if you switch the pins in the connector, it suddenly works. Somewhere, between the center dash and the next CAN device are some wires that were reversed by the water infiltration crew. Im betting its in a connector. They switched CANH and CANL somewhere when cleaning/drying/lubing the water problem.

[@eric49a]

Or damaged the wire harness during the dash repair and accidentally got high and low mixed up when spicing them back together

[@tonyfremont]

@@eric49a exactly, someone swapped them somewhere. That seems more likely than something being wrong with two replacement parts. CAN is supposed to be resilient, but it doesn't take much to wreck communications on the bus. Being on the high speed bus, I'm kinda surprised there weren't some driveability issues from the multitude of packets driving the bus voltage in the wrong direction and talking over everything. Seems like the controller in the dash cluster should have removed itself from the bus. It surely could tell something was wrong; CANL should never be at a higher voltage potential than CANH.

[@richardnilsen5]

It pays to study faults put on the bus on purpose so when you see it you know what's going on Great video👍🇺🇲 Water intrusion that leads to wrong wiring on brand new parts Mind blowing

[@paulpaquette1961]

Bernie doing videos over "Crazy Train"........LEGEND !!!!!

[@richardnilsen5]

No testing and inspection on replacement parts Before they go to market nightmare 👹. Brilliant video 👍👍👍👍👍👍

[@Discretesignals]

That was a challenge and you won! Awesome work!

[@danielpatty9485]

I'm just curious if the source for the can lines was checked to see if they could have been switched there? Great catch and case study.

[@abdul-kabiralegbe5660]

Interesting possibility.

[@mike3133f]

The occupancy seat sensor is a recall item for that year, mine was replaced by dealer.

[@carcranktime8313]

I dont know and see annybody better this man!

[@ELEISONCARABALLO]

Awesome case of study

[@LaTeamPrep]

Incredible, some common sense, some knowledge and professionalism and voilà!

[@Mr2004MCSS]

Amazing diagnosis. Bernie is on another level.

[@kyletuttle9064]

Great job and video Bernie great troubleshooting.thank for sharing.

[@Wayne-p7n]

Amazing knowledge this man has

[@kevinmclain344]

There are domestic makes that have high speed going to instrument cluster also, example is 2008 ford sport trac (both hs and ms).

[@VashthStampeede]

Great job and video Bernie. It really could have been a 20 minute video without all the redundancy and watching your hand on the plug and turn the key. We trust and believe you 😅.

[@SuperMarioDiagnostics]

Repetition is good. The best way to learn

[@miguelrocha2499]

Gracias por compartir aprendi algo más. Gracias

[@erockrivers8676]

Absolute Legend. Bernie is a true gem.

[@stephendennis7871]

Bernie, you greatly underestimate your knowledge and ability as you are the best I have seen diagnosing a difficult problem

[@ramongonzales1631]

Anyone know what happened to that seminar that was up I was going to watch it again

[@jasonstaub3045]

So happy u fixed this and the "electrical engineer"could not ! Gives ur diag techs street cred!

[@MechanicTechnicianRepair]

saludes master exselente dianostic mi respeto para ustes ke pase una felis navida ustes y tu familia maetro

[@markmacias8263]

That's Freekin Ausome! The scope is King in this industry

[@RandyFromBBlock]

That was fantastic. Nice work.

[@tracycolorado]

Too bad Bitchin is a Bastard to average mechanics . 😢 . You the man , Bernie. Merry Christmas and a happy new year to you and yours 🎉

[@DANNYN224]

Great fix can bus problems are not easy to fix

[@jharrison6557]

Bernie proving once again he is THE OG

[@marksteven3534]

So how was the replacement dash programed when it was installed with the wires reversed thats what I would like to know.

[@mike-s8n8y]

through pin 8

[@IamReadyToRock]

excelente... un saludo desde Peru

[@keltecshooter]

So while I would likely swap the wires the same fashion, the question remains, how did these modules become to be in the first place? Or did something or someone cross the can wiring in the car. BMW should take note here.

[@halvorsonmx]

That was awesome Bernie!!

[@herbertwatson5101]

Good day today new video from Bernie

[@willemajorwilliemajor476]

Amazing work man

[@rockynix7731]

This was a very interesting vidio .... Am subscribing ...

[@kenovalo1]

Maybe the can wires at the other end are swap but That was genius

[@travissheehan6082]

Awesome video Bernie

[@sneakypete123]

Which module is 'the dash'?

[@Car_Doc24]

Instrument cluster

[@howardiko7156]

How appropriate that Ozzie Crazi Train in the background.

[@DependableAutoTruck]

could that center dash been jumped or bypassed to the other one

[@GroundedDiagnostics]

Brain waves and wave forms for the win 😊😊

[@daviddasilva4897]

Just wow

[@tjinla9850]

"Holy shit!" twice Never heard Bernie so excited. 😅 Most of us would stop when the wiring traced out correct to the wiring diagram. After all, correct wiring has to be good, right? Have to have confidence in what the instruments show. That requires confidence in your knowledge of what you are seeing on the instrument. Bernie knows some stuff. Way beyond what I will ever know.

[@happy543210]

So, who the hell flipped the wires?

[@noelcastle3986]

Great vid I find it hard to believe they manufactured lots of those dash modules with the can bus lines reversed , you proved it but surely this problem would occur each time those dash parts where fitted on other vehicles .Your the maestro of auto diagnoses Bernie .

[@thejoyoffix4720]

Ah, the joy of fix. I guess this is what you call a true "cluster fuck?"

[@marlinyoung1606]

Bernie Thompson, “basically I’m a badass”

[@jimkillen1065]

Exactly what i said what a bunch of crap lol great job fixed that mess . I always enjoy watching your videos

[@themechanicnextdoor5144]

I don’t think I’ve ever heard Bernie say “Holy shit” or “This is bitchin”

[@Car_Doc24]

You should watch the one where he works on a Nissan 350 or 370

[@kennethbode2017]

great find. I sure hope you get checked out by a Doc. You sound out of breath at times.

[@tracycolorado]

Someone at the factory had a Friday moment and wired the internal dash wrong , more than once . Must have been Beer thirty 😉

[@edmonddoiron9093]

Great video. Would it be possible someone would have changed a splice connector and mix the 2 wire somewhere down the line

[@Charlie-dv7ev]

I love when engineers try to work on their vehicle and get their ass kicked fixing their vehicle. They always let you know they're an engineer too. I'm like "Doesn't sound like that matters"

[@KoryRude]

INVESTIGATIONS CONCURANCE LAWSUIT is CLASS aCTION.😊

[@timothybarnes533]

It don't get any better than ATS!!Great job,Bernie

[@vig37]

I bet MINI dealership said too bad you opened the box it's your problem.

[@mikechasse1016]

An "Electrical Engineer" will do it every time!

[@Santiago_Ordonez_]

It's perfect. 👌

[@SuperMarioDiagnostics]

Dash manufacturer: “i know someone that can make a can transceiver cheaper”

[@Hurlburton]

Go Bern Read alot your articles in motor You're super in videos

[@petar443]

There's technicians in the comments suggesting Mr Thompson missed "wiring problem", or "connector problem". Mr Thompson should have jumped all the pins from the module center dash to the connector by jumper wires , all but the two comm lines pin13 and pin26 and scope these two , from the module side while they are disconnected from the rest of the network in order to shut the mouths of "disbelievers". By looking at the comm diagram , the wires are spliced between the modules with no intermediate connectors. And if wiring were shorting together , i believe then even when the wires at the module were inverted to fix the current problem , the car would still have comm problems if problem was wires touching, but it did not , 100% proving the problem is the module transceiver. And just to say - Thank you mr Thompson for making this FREE content , such complex problems can be seen FOR FREE only at your channel without folks having to give away their hard earned money. Such studies and in depth information about the system could be only be seen on "National level training events". But this cost money, time and effort. Traveling around the country, planing holidays and giving money away in these difficult times.

[@youutartur1104]

There is an intermediate connector. Its X15 on the left kick panel in the drivers side. It would absolutely not happen in the splice packs, which would be hard to do anyway because those splice packs are separated from each other. You would have to purposefully be an idiot to swap them across those splice packs. The left kick panel is very common for water, and eats at the body control module that also lives at X15. I would not doubt the problem is there. Good job finding the problem but I think a note should be taped to the back of the cluster that there is swapped CAN wires now, because I'm 1000% sure it's at X15.

[@mikechiodetti4482]

WOW! Was the dash internal CAN bus "wired" incorrectly by mistake, intentionally, or did Mini make "updates" and should have sent update information with that cluster? HMMMMMMM! GREAT ONE BERNIE!

[@abdul-kabiralegbe5660]

Some others in the comments raised the strong possibility of the 2 wires for the cluster having been swapped at another location during past repairs. That seems far more likely than a consistent manufacturer error.

[@Pete-in-Essex]

Good stuff. Obviously the module 'talking' over the others was a woman.😁

[@meanodustino9563]

This video really helped me understand how CAN works, clearly something wrong when the colors change with other another. 😵‍💫

[@GraditelMacedonia]

Ok! Reeeeeeeally nice fix! And educational too, but one question stay to hanging up, and that is HOW BECOMING THAT CAN WIRES TO BE INVERTED...SWAPPED???

[@joshwilson849]

The manufacturer needs to be held responsible for this. I’m so tired of dealing with bullshit like this. If there’s no bulletin or letter and this is the correct part this is 100% on the manufacturer, id take them to court, 3 years without being able to drive the vehicle due to 2 bad brand new parts from mini.

[@mzee5533]

Vehicle owner is an electrical engineer who can’t fix fuckall. Can we trust him with his electrical engineering degree or his electrical administration engineering degree?

[@natersalad889]

Sorry Bernie but this one required a scope and ALOT of knowledge to figure out, not a little knowledge...

[@HouseCallAutoRepair]

Crazy stuff Bernie! What are the chances that those two wires were switched on the other end?

[@KoryRude]

Classic Breach of DATA SECURITY..internal affairs Contractor HUGHES TEAM....NASA...where have I seen this SABATAGE BEFORE.😊R.KO.TEAM.