It Wouldn't Get Fixed at a Dealership. Can We Make It Happen?! (Dodge Caravan Intermittent No Start)
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- Опубликовано: 26 сен 2024
- In this video The Professor Diagnoses a Dodge Caravan that won't start intermittently. You guys asked for us to diagnose and fix all in one video and that's what you will get here! This video will show you why independent shops are less handcuffed on certain repairs when a dealership can't get a part and aren't able to work around it. This is not a knock on dealerships or the technicians that work there. It's just a matter of being able to use the tools we have in order to make a repair like this happen when parts are on back order, which we all know happens all the time nowadays.
There are many lessons in this video and we truly think they will be a blessing for you! Get your notepads out and start taking notes. It's time for class to begin. Enjoy!
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Awesome Awesome Awesome!! Its rare for anyone on youtube to go that in depth. Most everyone skips over those crucial parts like the step by step programming. This is great stuff here guys👍
This was the best thing I've watched in years... Feel like being a mechanic now
I am in industrial power generation. When tracing through a harness I use colored mini zip ties to keep track of the wires I find and note the colors I used. . Sometimes the prints are not accurate and sometimes they do not exist. Having the zip ties placed along the wire path allow me to keep track of any deviations. It also helps when returning to continue troubleshooting intermit issues. Also a notebook is a must. I usually write out the tests procedure 5 or so steps out along with noting any readings I take. This helps when readings change. You can refer back to make sure your not misremembering any values. Great video, ......the old " what way is the print referring to the harness " question can screw you up if you do not get it correct.
I use fingernail polish
Thanks for the slowing down of the testing circuits process , it sure helps when trying to understand electrical testing basics for beginners , we dont all have scopes but great to see the effect , and on a real problem car helps too ,
Definitely prefer these longer complete videos. keep it up love the channel!
btw my xtool scanner has the same functions to replace ecm fix security issues and program keys. my friend has a launch scanner that also works.
A lot of RUclips auto will show this kind of thing but they mostly do it like they're learning it as they show it but you ran through this problem like you've done it a thousand times and it instills confidence in someone following along.
I really appreciate you showing the repair and subsequent testing to prove the repair as successful! 👍
A very welcome improvement to your videos! Thanks for the time and effort you put in!!
Thanks Professor for educating us😍
Looking forward to more video's😍
Stay Safe😍
Thank you for your time and dedication making these videos!
Something called my attention:
When, around 1.20 at the begining of the video, entering the VIN manually there only are 16 digits instead of 17 to be seen. Looks like the 10th digit misses, the identifier of the year (when comparing to the later shown complete VIN during the new pcm Installation).
Strange enough this incomplete VIN is accepted and the scanner identifies the car reporting back this same incomplete VIN. Additionally the report even shows the built date -2012 -, despite of the missing digit.
How come??
Thank you for this very interesting video. Just found your channel yesterday. I like the way you diagnosed the problem and how you explained it step by step. Greetings from Bavaria/Germany 😊
Great video Sherwood! Basic, easy to follow, fundamental diagnostic process put into practice. Once all of the powers, grounds, and comms are verified, boom! Pull the trigger on the PCM (giventhe fact it was a no comm) . No
need to start looking around for anything else, that's when we start doubting ourselves and going down rabbit holes, which you do not do. Awesome job and video. Stay blessed!
Well done with the start to finish. Thanks
I was doing the colored pencil thing, and never heard of Carlos. Great minds think alike.
I appreciate you and how you follow the data, which in my experience has always led me to the true issue. I am just now learning how to use an o'scope, and you have given me good instructions on proper use. Thanks
Great video! How does someone learn what to reset and what not to reset. I have programmed several modules and it stress's me out thinking I might do something wrong
I'm part of a group that does eeprom and cloning work. We bounce things off each other if it's the first time doing something. But sometimes it's the first time for anyone and we just work through it. Most mistakes are recoverable but usually at the expense of many hours.
Another great video. Can’t tell you how much I appreciate what you guys do. Keep it up 👍👍👍🙏🙏🙏
I love your videos. I've been a tech 15 years, scan tools and scopes are fun but what if the starter is dead and that's it?
I like seeing it all the way through
Love these types of videos!
This video was very helpful!
Very good video thanks for being so thorough.
Great video thanks for the detailed info !!
Good job done.
Another great video!!!! Keep up the good work!
Great video , saves swapping eeprom over , thanks
Awesome, great educational video.
Thanks!
Thanks for this great step by step. It will help me alot with my diagnosis skill as a technician. Filling my tool box with more information and growing using an oscilloscope to confirm 100% correct diagnosis. Keep up the great video of knowledge. I know I will try to pass the knowledge on to comers in this very difficult but amazing field that I love.👍👍👍
I have a 2005 Chrysler 300C with the same codes and the same problem..... thought it might be a fuel issue... thanks for the Autel and the alldata class. For the DIY guy the Alldata is expensive I have an Autel but its not the 608... these cars are just getting harder and harder to fix if you dont have the schematics or the tools to program them your pretty much forced to pay up for the repair or invest in the expensive tools and a monthly subscription to All Data.
You guys do great thorough work Awesome
Great video. I am a shop owner and have struggled to find technicians that can handle this level of diag work. Is there a large or small percentage of technicians that have developed these skills and understanding of the electrical/control side of the vehicles?
Basic electrical principles might make a good video. We will put it on our list.
👍 thanks for sharing. Very helpful.
Years ago, I swapped a computer in my in-law's 2004 Caravan. The VIN and odometer mileage reading came up as the original Caravan. We didnt change anything within the computer, just left it alone. The van drove great, the in-law's were happy
Some earlier models you can do that. Later models not so much.
OUTSTANDING
Thank you. From Denmark
These videos are great!! I work as a painter in a collision facility and it’s pretty cool to see how our brothers fix all of the things we can’t!
Checking service information is hit or miss. Especially on that garbage pro demand. Typed in immobilizer on a 10 Acura tl brings up Windows.
Quick question What system are you using? Can you use tablets?
I'm fairly new to your channel. What is that tablet/laptop you use? I really like it. I am a caterpillar trained heavy equipment technician for a contractor and I'm the main diagnostic/electrical guy. I think having a tablet would be great since most of our programs are internet based now.
Any chance you might want to do an autopsy on that pcm to do a visual analysis inspection and see if there is any corrosion or anything burnt out?
Sometimes we do that. We did not on this one though.
Topdon you would need their stand alone key programmer to pull the pin. It has the option to do it but doesn’t pull the pin like the autel. But they do have a newer key programmer with scanner functionality. Topdon bailed me out a few times when autel failed. Yesterday for the life of me couldn’t get a used pcm to work in a 10 acura tl with autel. I hds failed. For some reason topdon worked. I was pretty skeptical starting and seen the immobilizer light go off I was like no way did this Chinese scanner really work
Ive never seen a steering wheel that worn I cant imagine the life that van has had
Great work! I bet your customers are very pleased with your work!
what do you think of the im608 as a diagnostic scanner?
It's a good all-around scan tool.
Have you guys tried out Dan Sullivan's Load Pro diagnostic tool? Once I did, all my light bulb load devices went away and the approach to electrical diagnostics and voltage drop testing simplified immensely. Turned out to be a huge time saver, and never leaves my voltmeter.
I believe I have one. Bought it years ago but never got in the habit of using it. Might have to get it out and give it another go. Thanks!
@@theroyaltyautoservice
reading source voltage at the load connector (unplugged) just verified you don't have an open or short to ground. Pushing the button to add the load proves you either have a viable circuit (minimal drop) or you don't (big drop). Then it's just a matter of finding the unwanted resistance. Works exceptional on relay circuits right from the relay base too. Was a game changer from day 1. Thanks. APH. @@theroyaltyautoservice
😊thank you for this video and for your easy and useful information that is really good 😊😊thanks for your hard work 😊
Very good
Very interesting video, thanks!
Another great Technician
Thanks
I have known the Chrysler dealer to say they have a transmission then say they don't. What model Autel diagnostic scanner was used?? Thanks for a great video.
Hey what scanning tool do you prefer to use. And I with you on on being sure if you have data use it
From the Uk, simply brilliant, thank you for the videos, very informative
would be nice if you would sometimes list the connectors you use with scopes and when and when not a attenuator is needed. one of my scopes is Snapon and i know they don't have to have them. but i got one of those small UScopes and understand it is needed but not sure of all applications where it is needed. those probes you used in this video would like to get some of them. im still new to scopes still learning the ins and outs thanks wonderful video
Go to AESWave.com and find scope accessories. All the probes we use are there. They are a great company to deal with! We don't have to use attenuators on the EScope but Pico and others you do. You would use them for high voltage inputs to scope such as ignition waveforms.
Usually you can check the specs of your particular scope and it will tell you what the max input voltage should be. Also the attenuator should have a spec on it also like 10x, 20x, etc..I find the 20x most common but do your due diligence because once you let the smoke out of your scope or a module, it's very hard to put back in! 😂
Fca shows both harness side and mating side in connector pinout
Why would a Chrysler dealer not be able to fix the car? I'm at a loss to understand. Isn't the ability to handle this sort if situation the entire reason they have a service department?
All grounds are internally shared in the PCM and all 5 volts are internally shared also
I think you need to get yourself one of those loadpro and check your wires while the computer is disconnected go right to the pins instead of using a light for resistance and a scope all you need is a loadpro and a multimeter way faster way easier.
Love it!! (35yr retired computer engineer) back when we had to pull out the prints to trace signals.
Keep in mind people, you don't need all of these pieces of expensive tools to do this diagnosing. Most of it can be done with a basic multimeter, leads, and headlight bulb.
I have a Dodge caravan I'm working on at work no dash light comes on no crank. You hooked a jump pack on. And you do not have to turn it on it will get power to everything and it'll turn over and start leave the jump pack off still and as soon as you disconnect the jump pack from the battery it shuts off I've never seen this before and I'm beating my brain with it.
what about the autel?
What scan tool is that one? Do you need the interface for program that computer?
Autel IM608. It comes with the interface.
Those peircing probes.... That close to PCM. Not long before water gets in there.
Just wondering do you know if top Don got their licensing situate or not I know that was a big issue for a while
Alldata or prodemand? I see you use alldata but just wondering what your shops prefer?
We use both. Just depends on what I'm doing. Sometimes Alldata is better sometimes Prodemand is better. We also have Motologic and they are getting pretty good also.
It also has zero fault codes anywhere
Great information. I do my own service on all of my family’s vehicles, but this is my achilles heel. The majority of the time this is where I raise the white flag and bring it into a very reputable independent and have them deal with it. Thanks for the thorough video.
Does the used pcm part numbers has to be the same from the faulty pcm?
My experience is it is yes they have to match.
you check power and ground but did not check for chorted ref volt pcm and chorted can bus
I did check the can bus. It's shown on the scope. I didn't check 5v reference as I've never seen that take cause no comm. Have you run into the 5v causing no comm? If so I should add it to my tests.
Absolutely. Toyota/Lexus guy here. Shorted 5v will absolutely cause a no comm. Very common on our vehicles. Makes the ECM brain dead as the 5v ref voltage divider is shared with the processor’s power leg.
Grasias
Why is the volume from the videos always so low?
We are working on that. Next one will be better. Thanks for the feedback. 👍👍
What is that autell is it im608 what is thebest autell for the european matked
Yes IM608, they now have a IM608 plus.
DeoxIT D5
I mean shop system
Can we make it happen? Let's see, they posted this to You Tube, so.... 🤦🤦
Obviously you’re recording the process taken to diagnose and repair this vehicle.
Are you able to bill for the time you’re spending as a typical repair? You need to confirm the module failure but most shops tend to underestimate the real time it takes to properly diagnose . Flat rate mechanics are less likely to proof out the system as your showing in most work environments.
Thats a problem but a reality in the industry.
Enjoy your weekend with all your family around you. Royalty Auto Service
Brilliant video, thank you
ASTUTE Royalty Auto Service
From Nick Ayivor from London England UK 🇬🇧 ⏰️ 06:54pm Good Morning 🙏 🌄
I'm a little confused. You said power's and grounds are all good, Comms are all good but you know the PCM is bad but you didn't say why you think it's bad. What led you to the conclusion, or did I miss something in the diag?
We could not communicate with the PCM. All other modules were able to communicate. That's what lead us to the PCM. From there if we have power, grounds and good communication circuits then the PCM would be the fault of no communication. Hth
What about 5 volt reference? Or these have multiple 5 volt references that won’t cause a no start if shorted?
That is a possibility. However in this particular case, the Check Engine light illuminated which would rule out a shorted 5v reference.
I don’t get it if the pcm had good communication how is it that is was not communicating??
Doesn't even matter at the beginning if it was a single module or combo because you only trace one thing at a time and when they are linked they get solved at the same time. Secondly if you are teaching this you should not be probing all those wires when you could just as easily back probed at the connectors
all that for a key love this modern technology.
Wowza ! OK that was a home run …. And you sent it outta the park !! Nice 👍🏼 lesson . Thanks mate !! Super helpful . I learned lots of new things .
⚾️☄️🔧💻📈📉
I have no doubt you will fix it and we would too.
Nice channel. Very informative!
Awesome
why would they put all these modules when they can get wet eat up by salt and other weather prone area's. Makes no sense. I have a drag car and all my stuff I wired all my stuff on the pass floor or pass fire wall. The car battery is just above all those modules. The battery is located above all those modules so if the battery leaks one fine day. Also the tpim is another big pain in this brand car or truck. They will turn on your fuel pump and kill your battery and killing the battery. Plus not killing the fuel pump plus other problems that stupid tpim runs. They were to lazy to make removal relays.
What is reset win config, u said don't touch that but, what wld it do if you did.
the volume is to low when a advertise come on i must hurry up to put the volume down
Noted, will try to fix in the next video. Thanks for the feedback!