2021 John Deere 9620RX sets multiple communication faults and speed is de-rated to 6 mph.
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- Опубликовано: 29 окт 2024
- Got a brand new John Deere 9620RX that is setting steering and communication fault codes and will only run 6 mph. Speed is de-rated. Problem is very intermittent which makes it very hard to diagnose. What do you do when the diagnostics lead you nowhere?
#johndeere #johndeere9620rx #johndeerewrenching #johndeereagtech #farmlife #johndeeretractorpower
What a great customer, 19 hour machine broken and he is not going crazy.
Lucky for him you were on the job, highly skilled, determined to fix it and got the job done.
Way to go, JD engineers. Two boxes, same part number, different boxes. And the customers new machine is down for two days.
This IS why I absolutely hate the new stuff of today. I know everything is getting pushed to go electronics but, this proves my point about that. The old equipment was and still is so simple and easy to fix. Great video. Cheers :)
As an industrial electrician of 40 years experience I can fully appreciate the frustration off a fault like that. It must have been so satisfying eventually finding that, well done 👍. Strange thought when the wire wasn’t even fully broken. Bet you weren’t looking forward to replacing the wiring loom if that hadn’t fixed it!
As a automobile master tech, I can state can lines can be quite tricky, you can have one strand left in the wire, and still have perfect ohm readings until you hit a bump on the road, in most cases I run a temporary CAN wire outside of the harness between the two points of failed communication to save time finding the problem before judging modules.
Great job. Love your videos.
Worked on a CAN bus problem on a CT patient table and found a very bad chassis ground splice/star point. Drove us crazy for 2 days. CAN bus hates bad grounds and once fixed, we got flawless operation. Great video!! Thanks!!
Hey I’m a Deere Road tech up in Sask Canada, I love that stubby impact and fluke meter. Your videos are awesome, good work man
Thanks man! I couldn't live without the stubby or mid torque.
Thats awesome i used to live in regina sk. I'd love to be a tech helping farmers do their thing.
I hate intermittent CANbus faults. Drive me nuts. Techs usually says it's got to be in the programming. I tell them to check the wiring because if it's in the program all the units would have the problem. A few hours later they tell me they found the issue. It was in the wiring. Usually a pin that was not seated or a wire like you found. Keep up the good work, I enjoy the videos
I started playing Farming Simulator 22 and now RUclips is recommending your videos to me like crazy and I find it very interesting. The degree of realism in that game is amazing when compared to the real thing.
In my first job/career, I performed customer field service work (office automation equipment) and during the 14.5 years i did that, I had two similar issues of replacing everything that myself and Tech support could think of and it ended up being pinched wire on one and an intermittent pin contact in a harness on the other. The fix in both cases was very simple but, finding both issues was a nightmare to say the least. After that experience, I stopped assuming it was always the big items and started looking for simple comm issues first. It served me well.
Had a 1770nt planter that kept crashing and rebooting the planter controller. Didn’t crash anything else just the planter controller. The tech and I were working on it for something like 5 hours checking literally everything. Finally narrowed it down to the wheel speed sensor on the planter. Put a different sensor on and everything was fine. It was a wire on the sensor that was rubbed through the insulation grounding out on the frame intermittently causing the controller to crash. Extremely frustrating. Intermittent wiring issues can be the hardest to diagnose and repair.
Good catch finding that bad wire! Wiring harness quality control is not something to be taken lightly.
Yeah that's why I don't have hair anymore lol thanks for watching!
Sometimes diagnostics takes trial and error. I work in computer repair for the past 10 years. Cannot tell you how many times I have had still things like this. You are chasing your tail for 2-3 days in a row till you finally find it.
But damn nice find. Single wire caused you all that headache. I once had a single wire on a power supply that was not plugged in all the way. You walked past the computer and the damn thing would turn off
That’s one clean, well equipped service truck. That was one of those jobs. Customer needs to work, parts take time, intermittent problem. About half way through I said, “ oh well at least it isn’t raining “ lol
Great work. Good to see how you're able to cooperate with your customers!
Fantastic video, I glad the people who made that wiring loom don't work for the aircraft industry, terrible wiring,
Persistence pays off. Hope the customer was understanding and happy to finally get her back. Good job.
I would love to see a service truck walk through. I'm a john deere field tec as well. It's always cool to get ideas from other tecs on organization and tools to have. Keep up the good work!
It’s coming!
I've troubleshoot CAN buss issues - they can be tough - great job!!!
It's usually the simple things that turn out to be culprit...been there, done that. It's frustrating, but still pays the same. Cheers, brother!
Good job, those types of faults are a nightmare to fix.
Oh right on! Good find! Some tractors are just like that! Surprised you could send the farmer for parts, here is Southern Manitoba were I worked at a ag dealership (not a Deere dealer) we always did that ourselves unless it was a older tractor but never on a new new. Interesting how things are different in different places. Great video, keep it up!!
I had a wire like that on a 790 last fall I got lucky though and found it quickly but I have definitely had to chase problems like that when you are just about ready to kill something then you find it great video
Thanks! Got to love those CAN wire grimlins lol
LOVE THES VIDEOS! 10 year jeep tech and i had something very similar not too long ago with a communication would drop out for a split second. very frustrating to figure out
fine also turned out to be a broken wire ( shorting to ground at times to the firewall) but it was so odd how both of our communication wires tested fine when ohmed and load tested.
Sandvik drill Tech , had a CanBus issue also that was interesting, Can low wire had rubbed through against frame of drill causing Can low in backbone circuit to ground . Went to know connector points to install bridge cable and the first wire I put my hand on was the wire with the copper exposed on the rubbing part of that cable just at the connector, luck of the Irish!!
I’m former truck engineer who moved on to transport refrigeration units and those CAN-modules are pain in the butt to troubleshoot. You can only diagnose everything else and if ok, replace the module and pray - and customer will pay and cry. Did you have to put back the modules you replaced that were ok? I’d imagine so as it’s a warranty job. Anyways really interesting to watch the repairs, subbed!
Great job finding the issues. That could get old in a hurry
That's why I don't have hair anymore lol!
You do a great job, but I have to admit, I am saddened by the many problems you are seeing on new and newer machines.
Nice job Zeth! Sometimes just the smallest thing can cause huge problems.
"The more complicated the plumbing, the easier it is to gum up the works".
Lt Commander Montgomery Scott Chief Engineer
USS Enterprise
I'll tell u what amazes me with this technology today is that a database isn't set up for the field tech to look at the problems, solutions and the hits for each problems along with d tech to cut downtime. Like this video on that pink wire almost cut thru. That tells me it is the wire harness quality issue when built and should have been tested for shorts, vibration, salt water ,freeze and so forth .
Great video, I've been an aircraft electrician and avionics technician since 1978. I've run into your little problem many times! Cut wires aare a bitch to find. Have your shop invest in a megger. It's a megaohmmeter. It shoots 50,000 volts down a suspect wire and it then reads the resistance oof that wire. High resistance, you only have a couple strands of wire . It'll ohm good but won't pass a voltage thru it. A Fluke meter only sends about 5vdc thru the wire. You have to have both ends disconnected from electronic devices or you'll nuke them. 3 kinds of wire problems, short, open, or a few strands. A Milliohmmeter would be good to have too! That reads milliohms to check your ground connections. A fluke can't read that low. Have fun.
glad I found your channel. I've watched a few of your videos. One thing strikes me as a little strange. Most everything I have watched you repair seems to have wet paint from the factory. Wut up with that. I can't imagine buying something that expensive only to find myself sitting in a field somewhere on the phone troubleshooting codes.
Cheers from Louisiana.
A $500,000+ machine with 20 hours useless for 2 whole days time is money great quality control John Deere !
Name one manufacture that mass produces tractors and never has one problem... Just because one tractor out of thousands has an electrical failure doesn't make every one bad. It could have passed all the quality control checks at the factory because it took a few days of driving it before it showed up. We have a ton of these 9RX's running and they are doing well in my opinion.
You have the look of complete satisfaction at the end of this video!
Looks like Dear John breaks the same in the states as it does in Blighty haven’t worked on a big plant but small ones had been giving enough trouble
Anyway enjoyed your videos ever so easy to work with the dealer equipment
Well swapnostics sometimes only way to figure it out
Well to say cars giving enough trouble as well
You take care and all the best
Thanks for watching!
i come from germany and i did the same job as you. i have been out of the job for 20 years. In my day it was unimaginable to connect a laptop to a tractor. Today nothing works without it, it seems to me
I can empathize with your frustration. These kind of issues are terrible to deal with
One little wire shuts down the operation....amazing!
Not unlike the points on my 1971 Bronco that stopped the entire truck when the screw holding them in place loosened because of vibration and the points would no longer open and close. You remember, the "good old days" when everything was mechanical, super reliable, and "easy to fix."
From a fellow tech I enjoy the videos keep up the good work
Thank you very much
In my experience working at the Volvo truck dealer, OEM wiring troubleshooting steps for both Volvo, MACK & Cummins are wildly inadequate, guys who follow them often end up needlessly replacing modules & smart devices because their troubleshooting led them to no fault found in the wiring; which is less of a problem when you can get warranty to foot the bill but when its starts coming out of the customers pocket it get's ugly. In cases that are not immediately obvious I've had a lot of success isolating the harness, load testing the powers and grounds to each module in question, isolating the CAN line between connectors applying an alternate power and ground with a load in place, typically an incandescent bulb and wiggling the harness. A single conductor inside the insulation will give you good resistance but will not carry a load, while the serial data messages do not load the circuit per say, a nearly broken wire like you found, or a loose female terminal creating intermittent contact will absolutely wreck the traffic on the network. Good find, nice to see guys getting after it in the field.
Did this happen by the electrical posts by the road? That wire would prob pick up disturbance from any electro magnetic field it would encounter. Happened to me with a car (bmw) I worked on years ago.
They used to make wonderful tractors
That’s a good find. Can lines always cause some crazy issues
What a nightmare. I had a Cat 745 one time that would crank and crank and had injection disabled. On the the third day of t/s, found a ground that was barely loose. Had half the cab torn apart for it
High fault counts equal connection issues. loose pin terminals, broken wires etc.
Having SO Many break downs gets you techs VERY familiar with the tractor innards. I am NOT impressed with JD. Probably all the other brands are intha same boat.
THanks
👌good job finding the bad can wire!
Great, patient troubleshooting
It seems like lots of the new large John Deere tractors have some pretty major problems. Is this common? What about other manufacturers, do they too have lots of problems with the new equipment also? Too bad there is all this electronic crap in everything now days.
No, only JD joined the Big Tech I'm gonna control your life until you die game
With the greatest respect to you sir it’s a sad state of affairs that you cross your fingers a lot. Which reflects on JD not your good self.
👍👍👍you are the man with the right attitude never give up 👌
Huge respect though I’ve watched some of your other videos and some of those parts you change are huge and I’m sure are ungodly heavy
Damn even i got frustrated cant imagine how you have felt. LoL. What happens to me often is that when things looks like its complicated and i cant figure it out, it end up to be something very simple and easy which i didnt thought about. Than i slep myself on the forehead like: How could you not have come up with it earlier
Blows my mind a brand new tractor can have so many issues
First I don't work in Ag or on tractors. I watched this video and was wondering. Does the tractor owner have to pay for the different boxes and use of a new tractor from the dealer. Farming has to be very expensive maintaining those huge tractors. Great video.....
It’s under warranty so the customer didn’t pay a dime.
Crazy complicated and delicate. Arguably planned obsolescence.
Yowza! You are tenacious!
“But… but… but… the computer tells you what’s wrong with it so why do you charge a diag fee?!” as I was told 5438.3 times in my career as an auto tech.
These tractors are far to complicated they will develop so many faults has they age they will have no secondhand value
That's why old school, pre-computer machines are in high demand. Everything is mechanical with limited electronics.
They have plenty of second hand value
Mechanics are just getting better at electronics
If your a mechanic these days amdyou can't do electronic diagnosis then you won't get far
When you think about it basically everything post mid 90s is electronic control tp some degree, even mid 8ps in some brands
So full manual machines are 25 to 35yrs old now
Theyre all fairly well scrap now
No full mechanical machines are frontl line machines round here anymore
Got plenty of 10k hr newholland T9s round here that havemt had any issues
Plenty of high hour johnys as well
Nice job some of the stuff is hard to find though.
Nice detective work keep them coming.👍
Another good show
That was a head scratcher. Nice job
I’ve had continuity/resistance checks mislead me before the wire was showing .3 ohms but it will still have continuity even if 1 or 2 strands are still connected I do not work tractors but I’m sure the can lines have small voltage between the high and low lines I wonder if it would have shown a voltage drop comparing the 2 lines
Great job. Unbelievable strange 👍fault. 👍👍
And that, friends, is why you purchase an original, not a copy.....🤣🤣🤣 Glad you got it figured out though!!
Nice good find. That's bad workmanship on an employees part from what I can see. Never should fold a wire lol
Nice job your videos are sick man
Thank you very much!
I love john deere tractors but lately they seem to be having a lot of issues and these big tractors are super expensive to begin with
What issues are you seeing?
@@ZKMasterTech watching a lot of RUclips videos and people working on them iam no expert
If that tractor was not under warranty, what would the bill have been? $5k+ easily.
Love the videos....except the loud music just all of a sudden l 👍
I wonder how you make repairs. Love the diagnosis. Does Deere has their own approved wire splices or does Zeth have HIS ? Eric O working on salted cars shows us what he uses. Sells them too. You work for a humongous company. Thatsalota Deere.
I use heat shrinkable butt splices. Never failed me yet.
@@ZKMasterTech with goo inside the heatshrink?
@@lackeydehackey405 no the plastic melts down and seals around the insulation of the wire. You crimp it like a normal butt connector then heat the ends to seal them down.
@@ZKMasterTech the ones with resin inside make it water tite. No green crusties
@@ZKMasterTech they are great little joiners awsome actually but if was my brand new machine I'd want harness replacement because after 10000 plus hours with dirt rain and corrosion that will be a weak spot
Good find 👍
those are the "FUN" jobs ; you test correctly .... but that last little strand or 2 fools the meter easily .... we dont have Xray vision
GREAT VIDEO.. I'm surprised that you didn't need to solder the broken wire... Good find.
In my professional opinion, heat shrink but connectors are the best. You can run enough amps through the wire to burn off the insulation and the but connector will still be attached. Solder will melt. Plus if you don’t solder it perfect you can have excessive resistance. But connectors do not change the resistance enough to really detect in a multimeter.
@@ZKMasterTech Good to know. International says to solder so I was just wondering... Thanks buddy 😃👍
Also Deere doesn’t recommend to solder can wires they want you to use heat shrink butt connectors
I know it's not the same...but Toyota requires soldering in any warranty repair. As long as proper rosin core solder is used, resistance is negligible through the circuit, and voltage drop is non existent.
@@ZKMasterTech You should look into open barrel connectors, you can maintain much greater flexibility in the wire without the added bulk of a butt splice, you never run the risk of damaging the heat shrink while crimping and if done correctly the splice will cold weld the conductors.
We see a lot of failed heat shrink butt connectors in truck chassis harnesses due to split heat shrink around the crimp, often when multiple circuit repairs have been made in close proximity. At the end of the day fixed is fixed, if they don't give you trouble good on you.
Wow. What a saga. Frustrating in a new machine. Now picture the same machine in Outback Australia away from the internet, a workshop nearby, replacement machines, quick parts and the US field support. Supersizes frustration.
I bet!
We operate so differently, the US and here. I do love your metrification on the machines. Impressive. It’s funny the areas that metric units have crept into the US. Science, aviation, space, engineering and sweet green machines that went metric for the international market. I remember when we first saw metric green here. Luckily we know both so well. Cheers.
I’m in school at Vincennes university to be a John Deere tech but I won’t ever work on anything this big I’m from east central Kentucky and all we work on is lawn mowers to 6 thousand series
Whoever it is in manufacturing that identifies three different, incompatible items with the same part number needs a good slap.
That's the toughest part of being a tech facing the customer. They on the hook for getting the crop in the ground. They got million dollar investment.
So, in the end did you put all his original components back on since everything should have been working correctly in the first place?
I thought from the beginning that there has to be a loose or broken wire. That is the only thing that would cause this kind of issue. Throwing in a ton of components at it and still doing the same thing just proved it.
Good find!
the one big problem with that plastic tubing is it rubs in the riges its a crap way of doing it . you get the same problems with air con units where it vibrates . the same type but made out of metal . then ribs are the problem . you need smooth piping to cure that problem .
Does the complexity of the electronics in these deeres pay back in productivity?
Most definitely
Can't wait till the start using fiber optics for CAN bus
Well done my friend. Sam we go to true north in Kennedy minn.jd dealer.sam
I think your service manager needs to get you a flow meter. Just as important as a multi-meter.
I would have first checked the flux capacitor. They go bad all the time in these new rigs.
All that work only to find it was 1 damaged wire but with the mess of wires and tech on equipment these days you never know if it's going to be a simple 5 minute fix or a fix that could take several hours.
What I find funny is that that huge tractor uses the same ignition key as my 3 series.
Is it supposed to be bigger?
@@HoLeeFuk317 It wasn't what I was expecting, I was expecting the bigger tractors to have ignitions more like a car or truck.
How were they able to tell that it was the wrong steering box?
Excuse me for asking. If the tractor is so new why the ffff aren’t JD out there busting a gut to repair it under warranty?????
I was…
@@ZKMasterTech sorry I thought you are an independent ( bloody good at it ) 👍🏻👍🏻
No I work for Sloan Implement.
What do you with all the the parts you replaced. Nothing was wrong with them correct.
I leave them on there. It's covered under warranty.
Hey man, great videos. What tools would you say you absolutely need at a JD service tech. I’m about to go work for a JD store and just curious to see what you recommend. Thanks in advance!
Thank you! There’s too many to list on here lol shoot me a message on Instagram @ zk_mastertech.
So after everything you did it come down to the wire
Imagine paying half a million dollars for a new tractor and 19 hours later it’s broke down for 2 days. Like how does that happen??
There you go the Deer screws itself instead of the customer !
Can you still buy a mechanically injected tractor that doesn't come with all of the electronic gremlins and emissions equipment? It seems like they would be a lot more reliable if you were willing to turn the wheel and shift the gears yourself.
Great vids
What is the price for one of these monsters, new?
$600,000
Good good.....
Dirkie south afrika
Why did you have to blur your tool?