Ram 1500 Intermittent U0109
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- čas přidán 24. 07. 2024
- This 2018 RAM 1500 came in with an intermittent check engine light setting a U0109 Lost Communication with the Fuel Pump Control Module. Interestingly though this module has no communication lines going to it!
Launch X431 Pro3s+ Scantool
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#launch #diagnostics #Picoscope #autorepair - Auta a dopravní prostředky
I have an X431. And it's my go to. Like you mentioned it's an unlocked Android. I have ProDemand, Identifix and Alldata open at all times. And the U.I. for the X431 is super stable. Unlike my TopDon.
Great diagnosis Jake! Thanks for sharing it. I was jealous of your diagnostic mindset this week when it took me 16 hours to find a shorted $0.05 resistor shutting down a $150,000 garbage truck.
Great job finding that ground issue! I am surprised that there were not more issues with engine sensors from this ground connection issue!
Gotta love the way you work this kind of problem up to the point that there is no guessing at all.
Most helpful video in regards to 4th Gen RAM 1500 FPCM problems! Well done and thank you!
I like how you explained the diagnosis process. Please do more videos on the Launch scanner. Thanks.
Great video and diagnosis. I can’t believe that the ground only caused that one issue.
I think the repair should be perfectly fine. Obviously, having the ground exposed on the frame by the wheel might not be the best location, but that wasn’t your design.
The Launch looks like a nice scanner. I bought a X430 in 2018 and still have it, but the tablet feels really cheap and I was never to happy with that purchase.
Good find and simple fix💪🏻
Thank you for this episode
Best wishes from Holland🎉
I just got a job back at Chrysler and they are making techs train on a scopes now, you should be seeing this more often
Great diagnosis Jake! Wow that's why Bernie Thompson preaches to use the battery ground for testing... Amazing that the fuel pump still ran no problems with that loose ground stud 😮
Happy new year!
Happy new year to you all and your family my profesores .
and yes uncle berny always say so .
Great work guys
Great catch Jake. You can't beat a good knowledge of the scan tool & Pico. 👍
I dont understand why you dont have a million subscribers!
I have used launch for a long time. Started with Maximus (Matco). I now have a throttle III, the vci doubles as a j2534 pass through , I have the 4 channel scope ( I believe is hantek )also have launch xprog3 .. I also have. A pico. Launch has come a long way. But of course they all have their pros and cons of course you need more than one for their own Strengths
Happy New Year~!
Keep on rockin it~!
I wasn't expecting a ground problem. Given that the pump ran fine, I was expecting to find a wiring issue on the feedback or control line. Good job sticking to the basics and adding power and ground. It also shows why you need a 4 channel scope and not cheap out on a two channel. Although, I do wonder what a high amp test light would have shown.
Happy 2024, Jake! Very capable scantool you got there, and it's less expensive than I expected. Great diagnostic (and unusual repair), that absolutely required a scope, the scantool and the proper diagnostic strategy.
What awesome diag you just show us with good tools . Thank you very much
THIS IS WHY WE WATCH YOUR CHANNEL ,,, NOT ONLY GREAT UP TO DATE DIAGNOSTIC TECHNIQUE VIDEOS BUT ALSO WE GET TO SEE THE LATEST DIAGNOSTIC TOOLS TO GET THE JOB DONE IN THE QUICKEST TIME POSSIBLE . WHAT MORE COULD WE ASK FOR ,,, THANKS FOR YOUR TIME AND EFFORT CAN'T THANK YOU ENOUGH 🙏👍👍👍
I love logic, thanks again.
Nice work Jake!
I wish you and your family a blessed and Happy New Year!
Very impressive how a loose ground can cause that. Thanks for the lesson.ck,wisc.
And that's how is done folks. Great finding as always. God bless
Happy New Year! Nice easy money to start off the new year! Can't wait to see you test the topdon scope.
As always another spot on logical diag. I sure hope your charging properly. I guarantee that few people operate at your level and the parts canon would have been loaded and reloaded on this job by many techs. The minute the scope comes out it should be min $200. Thanks for sharing so we move past the urge to shoot the canon :)
Enjoyed watch this one.good info Jake happy 2024.
Hope you have a great 2024 Jake! Nice fix!!
Excellent video, way to start 2024 Jake.
That's a great diagnosis!
Thanks for the great educational video.
Just goes to show you how important grounds are!
Super nice version and features on this new one! It's very clearly evident that they listen to feedback asking for these conveniences, like the all screen battery voltage display. Topology is awesome. Hopefully, someday before centralized flight control, I'll be worthy of one of these.
i love these sort of diag videos , awesome Jake good job , yeah that fix will last , tool looks good, Best Wishes for 2024 Jake
Interesting Case Jake..
I totally support the ground repairs.
As it will last long ..
Happy 2024...🎉
Great job on the diagnosis!! I maybe would’ve tried to re-thread the stud and if that did not work, then proceeded like you did. Great job love your videos.
Great video. Thanks for sharing your knowledge , You're lucky to have a vehicle that is so clean underneath , I wish all vehicles were like that. It would sure me our jobs easier .🇦🇺
Cool find on his one! I'm sure it would have gotten a new module had it gone somewhere else...😅
I do like the way the Launch interface works. Also the vin decode process is not quite as wonky as the topdon. Thanks for sharing!
Happy New Year Jake!
Good Diagnostic tool!
I've seen that before and I've used a nutsert in the hole so that I could put a regular or larger bolt to really tighten the wire or cable terminal to the frame. Then put something that will stick to and stay tight to the bolt and terminal to prevent corrosion. If that ground goes to the battery Negative, your all set. If it goes to the engine, make sure the battery Negative cable is at the same place. In other words both at the block or both at the same head. Sometimes these grounds are separated and mounted in separate places on sheet metal or aluminum. Those two metals do not make good conductors ESPECIALLY in salt belt areas. I've seen how a truck in Southern California that's parked near the Pacific Ocean can have intermittent electrical problems. Running a 10 gauge wire to underhood ground points in a loop, then grounding that 10 gauge to battery Negative solved more than one intermittent electrical problem including intermittent no starts.
With micro amps and low voltages in these communication lines, the grounds must be almost perfect!
These comm ground problems remind me of large trucks with multiple 12 Volt batteries in parallel having cranking/starting problems. It came down to cable or cable terminal mounting problems.
Good one Jake!
Fix will outlast the truck :)! Thanks for sharing!
Nice troubleshooting 😊
Happy year Mr Jake .
I don’t know how to express how much I appreciate your time teaching us .
Cuz you always nail it.
Question why if it’s grown produce spark like if that wire have power actually.
Please make a video how to use the pico in terms of the setting ms an all
God bless you and your family
Most excellent video 😊
I would say that's a great fix it'll be fine.
BEAUTIFUL TROUBLESHOOTING!!!
Good find 👍
Thanks great and informative 👍
Love my x431 v+pro
Another great video.. HAPPY NEW YAER!
that a petty sweet scan tool . seems to have all the options you will need . how cool was that having traces in the service data very useful indeed . great find my friend and to be fair i think that repair will outlast the truck 🤣🤣🤣🤣
It will atleast outlast the camshaft lol
Nice find and fix. Your repair may not out live the car but it's 100x better then how it arrived so it's 👍. Can't always do everything perfect and pay the bills.
As for launch x431 they're great and immediately pay for themselves/become profitable. Highly recommend at least 1 good launch and autel tablet for anyone seriously doing diag. Thanks for sharing your process!
Excellent explanation of the operation of a fuel pump control + monitoring approach that is NOT intuitively obvious (at least it wasn’t to me)!
And overall a very interesting case study!
Alex at PHD will love this too
cool tks Happy new year
Back when I did drive ability trouble shooting with the old snap on brick with cartridges we were taught 1st check power and grounds and it seems like 20 yrs later that still holds true
Absolutely
Good job that was fun.
Nothing wrong with what you did there.
I had a funny one where the vehicle would start and run, but as soon as customer applied brake to put it in gear, it cut out.
Bad ground, the additional load from the brake lights was causing it to lift further and the fuel pressure became too low.
I knew exactly what it was because the front marker lights were very dim (when off but engine running) and became brighter when the brake was pressed.
So the fuel pump was finding a ground path via the tail lights and then the front lights.
The ground stud at the rear was a similar stud to this Ram but was fitted to a reinforcing plate in the body.
It had rusted out all the way around that 2x2 inch reinforcing plate!!
We have a Launch with the X431 on it. It's a great bang for the buck. The two big things that are a pain to me are (#1) no code history data to know how many times it's occurred. (#2) and the biggest pain, is with the euro cars I scan, it only shows the factory code numbers, and rarely tells you the P code, so I have to go back out and into OBD to get a P code. Can't imagine why the software would be written to not give you both at the same time.
Great video.
That was great, thanks for the video.
Looks like somebody tried to put a 1/4 -20 nut on the 6mm stud.
Your darn good bud..My gosh.
Launch are good ones.
Great job 👏
Yes more Launch!
Great Diagnosis! I have a Lauch Pad V, and i think TopDon runs on the same Lauch platform, is just tweaked a little different so they can rebrand the tooling, kinda like Matco tools LOL.
Excellent video 👍
Im currently testing that exact scan tool so far it has been really good but my autel is still my go to for euro cars
I agree the autel is really good with euro!
i like having a minimum of 3 full threads. i grind the frame bare nut and bolt the eyelet then seal it with permatex high tack (after load testing of course). never had a problem. truck tractor frames you can usually just bolt they are thick enough. before scopes this was an easy find with a meter if you were used to doing volt drops. since scopes come out "just do the wiggle to find the squiggle" lol
Not doubt about it it will last cuz that repair is 💯 % better then the striped nut ( bolt )
That was a good one!
I’ve been looking into a new tool I have the topdon Phoenix. I was looking at that unit but in the pro version not sure what the difference is in the pro. Ect. Checked the link that is the exact one I was looking at 👊🏻
The best part for all like Ivan say … the best of all not part required
Grasias
I think it will last like your new scanner too!
Awesome
Happy New Year 🔧🍺🍻🍺🥃🥳
There is a bypass cable for the SGM in FCA vehicles after 2019
HEY GREETINGS I AM NEW TO YOUR CHANNEL GREAT JOB 👍👍👏👏
Hey Jake.
I’m a fan and subscriber of your channel.
I was thinking the best possible answer would be installing a Nutsert in the hole you just drilled. Also commonly called a rivet nut. Then screwing in a new bolt according to what size Nutsert you decided to use. And then spraying with undercoating after reassembly to keep the corrosion at bay. It definitely will have a lot better thread purchase. 👍🏽
My issue with threadserts is you have added another connection point. It wouldn’t take much to have rust form between the insert and the frame. Ideally I’d rather weld a bolt to the frame to act as a new stud.
Yeah, I didn’t think about that, you might be right. Good thinking.
Good fix. Not so sure about tapping the 1/8 thk box tube, though.
could you get a nut through the hole in the chassis to back up the threads you cut with plenty of grease nice catch there
I happened upon this video because my car has the exact same symptoms. I have a 2016 Camaro 2SS that has intermittent crank no start issues followed by the U0109 engine code. Never have any problems while driving just after I've stopped and shut the car off sometimes it doesn't start back. Sometimes it does. For the life of me I can't find the problem. Fuses are good all the usual things I've checked.
Some of these issues can be hard to figure out.
@@autodiagyt indeed. When I get time this weekend I'm going to chase every single ground in my car. The battery is in the back over the passenger side wheel well and the fuel pump control module is roughly in the same place on the driver side so I'm hoping it won't be a nightmare like I'm expecting
Scope captures in service data, wish all manufactures would learn this. Most dealer techs are unaware a scope can be used to diagnose a car at all, why they can only fix certain problems. Does A have value, if no replace B...
If there ever was a case to iterate importance of referencing to battery ground. 😊😊👍👍
You would still get your correct answer if you had grounded to chassis.
How?
Because the supply (blue) would have shown as +10V (you might think voltage drop) but the drive waveform (red) would have shown as -2V to +10V.
And you would know there's no way the PCM can drive a PWM output to -2V.
That would tell you your ground is bad, just a different way.
Remember, scopes with common ground MUST reference battery negative but Pico 4x25 series are isolated channels so don't strictly need to reference from battery negative.
Handy for things like wheel speed sensors with small signals superimposed on a supply.
@@simonparkinson1053 👍👍
Great case study. I like that scan tool and Launch based scanners in general. Is your Otofix D Lite Auto Auth approved? I have the regular D version and can't really find any information on whether it is or not.
As of right now otofix is able to register under autel
@@autodiagyt Thanks for the information. That is good to know.
Credit to Chrysler for the pico waveforms.
Topdon and Launch are pretty much same thing. A Phoenix max is exactly the same price as a Launch Pad 7. What would you see as a plus for either topdon or Launch?
The only advantage to the launch is they have the AutoAuth rights. I personally think AutoAuth is doing a money grab scheme with all the tools that lease the launch software but they are the ones with the rights to fca servers to do the gateway unlocks so until something happens they have the monopoly and can do what they want.
That’s the way most have it anyway
A couple of questions does it require a computer connection or wifi and is the security connection a monthly subscription and it was a nice diagnosis makes you wonder why a truck so new had such a faulty connection was it intentional
No computer connection required just WiFi. Most of the time I’m using the hotspot from my phone. AutoAuth is a subscription of its own but it’s only $50 a year.
@@autodiagyt that is very helpful thanks
I like the scan tool but there's a lot of bad reviews on tool not working properly and customer support
So far I've had no issues.
Jake your lauch has scope? I have a x431 pros3+ and dont have scope i got it in October of 23 wondering if i can just update mine to get the scope?
No I have the Topdon scope that works on it
Hey bud, any word on whether you TopDon scope module interfaces with the Launch?
Thx.
Yes it does!
@@autodiagyt Yessss!!!👍👍👍
Could you use the launch scanner as your main scanner?
We will see.
Those tires or sumtin that the tire ran over broke the ground stud probably
At 26:40 it appears that the stud has wrench flats on it. Could you have unscrewed the stud and replaced it?
Those are shoulders that cut into the ring terminal when it’s assembled the first time.
Probably can cut some new threads on what is left of the stud,
Idk im just guessing BTW great job finding that bad ground issue 👍
The scanner looks like my thinkar scanner i guess is the same ?
Pretty much
Dam good job Jake. Soak them good for that repair.
Reviews are not to well with customer support. Other then I like the topology it has, etc.
What a horrible place for a main ground. Salt states are going to eat that alive.
Anybody else see the elephant in the room? Why is necessary to have a module to run a fuel pump when all you really need is ground and key on 12v? This crap makes vehicles more expensive, less reliable and prevents the average owner from fixing his own vehicle. Whats next, maybe we need fart sensors in the cab that would open the windows, turn the fan on and put the vehicle in limp mode. Just think of all the issues this would solve. Oh wait, I can't think of any either. What a bunch of BS!!!!!