Fantastic explanation of your troubleshooting methods! Great to mention that modules can interfere with one another! People often forget that a BUS is a shared resource that any module can mess with.

Best video I have found for understanding BUS & Module systems Thank you

Thanks for this video. Had the issue pop up the day my Caravan turned 100,000 miles. I found this video and started by disconnecting the rear DVD monitor and ac. The DVD monitor was causing the No Bus code. Saved me tons on dealership diagnostic costs. Excellent video!

Nice fix. Good thought process and explanation of your work. One slight shortcut is that you can unplug each front door in the jamb without having to pull door panels, saves a few precious minutes

You are a great teacher, knowledge, methodology, energy ...👍 well done

That was an awesome diagnostic process! Definitely a lot of manual labor involved, but so satisfying to see the CAN network come back to life :)

Just finnished doing my Smog Update CAN Communication Diagnostic Course, I thought this was an AWESOME Video... You are a great teacher and very knowledgeable and it's the best explanation I have seen... Thankyou Keep it up...

Great video. I am a dyi enthusiast and your explanations and thought process are extremely helpful. thanks for this and other videos

Excellent video with a very good explanation of all your troubleshooting procedures and the reasoning behind them and what we were observing while you were doing them. very well put together thank you for your time and knowledge. 👍

very good your videos! Another easy way to identify problems in the Can network would be to turn off the “star connects”, so you can identify which module is bringing down the network

Love the troubleshooting process. Great video. Thank you for sharing!

Great diagnostic skills, I learned a lot watching your videos.

Thank you so much for this video, you probably saved us 100s of dollars at the repair shop. We have a Town and Country S minivan that had the same problem. It started after washing the vehicle. The problem was the drivers side rear door where the connection got wet from power washing. Again, thank you!!

That’s a great find, thing is with these kind of faults they are so time consuming( I do it every day)but the customer just doesn’t see it ... well done 👍

WOW! Thank you so Very Much! I've been pulling my hair out trying to figure this same problem out. And, also I had a problem with the Tailgate Lift & it would not open manually. Not sure if that was also a problem with your customer's vehicle. I bought this 2008 T&C with a "3 day warranty" ,, UGH! I called Dealers and friends to find an answer. I was stuck away from home with this problem. 6 hours later, when I happened to pull the driver's side cargo door closed... Boom! everything lit back up and the van was back to normal. Next day(today), the ghost was back again. And you have now kept a grown man from crying! Thank you so much. I was asked if the van had been in a flood, because that causes some wonky things to happen. You were very educational, but WAY over my head. Thank God that you put this video up, and I can be helped a year later. And thank your customer, too.

You sir, are an automotive deity! This was 100% the problem with our 2016 Grand Caravan. I fixed the problem in about 10 minutes max

Honestly thank you for taking your time making the video and also for the CAN bus system , really simplified it cheers mate * UK *

Excellent informative video. Thanks for sharing your time and expertise with all of us!

Bravo Sir. This video needs to be noticed ASAP. Wonderful presentation. I'm just scratching my head about not having splices. That radio interface to me looked like Chrysler's powerNet thing they have going on where the splices are under the glove box tucked up in there. I know the Darts have them. But u were there present at that time so I'm pretty sure u are right that it didn't have splices. Bravo again Sir. Hope the big dawgs in the KZfaq world take a look at this. Bless 😇

Great video. Having simular issues with 14 Town and country. Saved me hours. Thx.

Awesome video. Our lights went out on our van as well as other goofy things, and after researching causes, I came across your video. I then disconnected the DVD module and it all worked again. Thank you!!!

The front doors have a connection that's easy to unplug, where the door wire loom flex thing meets the frame. Seems easier to just quickly unplug the whole thing for the door test and go further if signals change 🤔 I bought an 08 Caravan super cheap and it stunk really bad! I got lucky and noticed the whole interior CAN would cut out when the door was open as I scanned it with the door open...it was so gross smelling but improved with the door shut, it also had a door module code. I could also see the wires in the door flex were installed backwards by someone and jamming the wires in the door as it closed. Made for a nice easy problem to spot, a week before I wanted to go on a 3000km trip. I even had time to shampoo it and drive around to verify the fix. Both CAN lines shorting to each other and 8 bad wires in total where the door wires flexed. Thanks for the great detailed videos on everything, so much to learn 😊

You are amazing at providing a vast amount of information that has helped me understand what to look at. Thank you so much!

Thank you for SHARING, you have helped me tremendously

Super in depth and I don't have the fancy equipment to take advantage of all the knowledge you just shared but I sat and watched the whole thing anyway. Really nicely done video.

Great Diagnose! Sometimes disconnecting modules is the only way to locate the CAN or IHS problem.

INCREIBLE!! Gracias por compartir Este video , anoche mi carro Dio todos esos problemas y vivo en un lugar donde hace mucho calor , no tenia aire ,no bajaban los Vidrios , no tenia radio , luces . Este video merece un million de likes . Un abrazo .

I just want to thank you for your videos.i have watched 2 of them and they are really interesting.thank you for sharing

Very Cool! I'm studying for the ASE A6 and I've never done CAN BUS troubleshooting, great to see!

Thanks for the video. Had all of this nonsense happen yesterday on my 2014 dodge grand caravan. It was my rear tv also. Great video!

Saved my life!!! Thank you so much!!! Even tho I have a different van it still worked the same way.

Awesome troubleshooting skills! Thank you for sharing!

This topic is intimidating, if only because of the specialty tools and the way communication is more complex than simple power and ground. However the more I think about it, basic principles still apply. It is also helpful in some systems to have end module resistors in parallel to allow a multimeter to measure resistance and infer the status of the wires (open, short, or good). The worst of this for general mechanics is the lack of normal values and poor communication of those standards in the dealer repair manual. In the end, your theme to disconnect modules one at a time and watch the signal seems to be reliable and systematic. I'm gonna have to tap into these circuits a few times to better appreciate how they work in normal vehicles. Another brilliant video, Eric.

Thank you so much, went right back to normal. Great video.

Holy crap! This video saved my life! (I may be slightly exaggerating) How could I have possibly known that ONE tiny broken wire in the driver's side slider could cause such a mess! Thank you! Thank You! THANK YOU!!

Our 2011 t&c started doing the same as the one in your video, seems to have started shortly after we went through a self carwash.. it goes away at times but comes right back.. three shops have tried finding the problem with no luck..the dealer was one of them.. They tried selling us a new one instead.. though charged over 200 dollars for basically nothing..i tried disconnecting the roof and no luck... Thank you anyway for the video, it gives a lots of encouragement , i will try disconnecting the rear sliding doors next..thank you 👍

Man just bought a 2013 doung the same, that was extremely valuable knowledge...excellent Job sir.

Thanks for your vid. I enjoyed watching your procedures.

Another superb video, Thanks for teaching all us Dummies

Another amazing video! Thank you 🙏

Excellent diagnosis video!

Excellent job. And I subscribed. You have a very informative channel.

thanks brother, awesome diag. i have found many problems in the roof. great explanation.

enjoyed the video great job explaning the CAN SYSTEM

Great video, although I was lost a couple of times it all makes sense. Thanks.

This one definitely goes into my Can /bus comunication problem reference videos for future brain refresh.thank you you have another subscriber.

Awesome knowledge, bro Thank you so much for explaining about the CAN types involved in this vehicle. This video is very useful for myself. Thanks again!👍👍👍

I'm sure you (and your customer) wished the first module you tried was the bad one!! I'm working on a different Chrysler product, but the troubleshooting procedure remains the same. My CAN bus lines show continuity between TIPM, Cluster, radio, etc, but does not show any resistance between the two lines themselves. I also see comms on the bus, but the cluster still shows "no bus". My car remains something of a mystery, but you gave a good explanation, and I appreciate the extra effort it takes to make the video.

Very good video, I'm definitely glad I found this channel communication faults are my weakest area and you did a great job explaining and showing how you got down to the answer.

You can only drive this van in the rain. Great video. This is why I hate computers. They can do really weird stuff when things go wrong.

Thank you bro. You got a lot of patience. Keep on posting those videos.

Great video, very informative. Thank you.

Thank you for sharing your knowledge

This just saved me hundreds of dollars! Thank you!

Wow nice job and explanation. Learning a lot from the best. Regards pal.

Just incredible!

Great diag,bud. Had a ford f150 ,customer left window down and it rained ,few days later no start,no comm. Module got water damage. That's why my personal car is all mechanical lol.

Incredible dude! Fantastic work!

WOW, what an education! Thank you!

Great job again like always

This is a really valuable information 💁‍♀️ 👏

Nice info.loads learned

Excellent trouble shooting thanks for posting.

You have such a gift!! Awesome work Eric!! Love the whiteboard also!

Nice video. You explainations are done in a way people can understand. I assume that when you left the module disconnected you also disabled the rear air system?

Here is an idea you can try in a future "No Canbus" scenario. Basically connect only a positive external +5vdc supply to the Canbus reference line; no negative, or no ground connection from the 5vdc supply. Connect a 5v volt step-down voltage-regulator to the car battery, while keeping the car battery connected to the car. Then connect only the positive 5v output lead from the voltage-regulator to a known Canbus 5v-reference wire within the car. The Canbus should "come alive". Now connect the OBD scanner to determine which module is at fault.

That was a awesome diagnosis

Great Video Thank you never know when this might be handy as a T&C owner

Great troubleshooting technique !

I worked on my cousin's T&C van, similar issues with all of the devices in the vehicle when you would close the door when running. I found the proximity (collision) sensors in the rear bumper corroded and corrupting the bus signal, disconnected them and everything went back to normal, we left them that way because they were $700 each! They were the same part number as some Mercedes cars. I also worked on a 2014 Chevy truck with a totally dead bus, a critter had nipped a wire in the harness near the rear shock, critters are a big problem in the last dozen years.

Nice work, especially for your first time! Enjoyed watching your logical approach. I will give just one time saving tip. After you compete your car auto scan, you can press report down around the bottom of the screen to see all codes in one page, at the same time, that way you won't need to go in and out of each module to check for codes. Really enjoyed this one, reminded me of my jeep comm video 😆 yours is much more detailed and explained. Thanks for sharing!

Wonderful video thank you

I am having the exact same issue on my 2014 chrysler town and country. I have pretty much came to the same stopping point. I was hoping that you would be able to show how to test the components individually to find which module was at fault. I will figure it out. Great video. Confirmed I was looking in the right direction.

Great video and presentation. Thanks

great explanation on can bus. thanks.

Great diag, Eric!

Great video. You're an excellent tech.

very well done Eric thanks so much

Interesting! Thanks for sharing 👍

Thanks it's a good job great diagnosis

Well Done! Thanks for sharing

Very good diagnosis!

Great Job like always

all i can say is well done ,with your explenation,thanks for this viedeo, i just someting new today , good jom man

Blessings Thanks you for teaching me auto mechanic class

Nice approach, just subscribed !

Awesome video. Great stuff

Best video , thank so so much

Thanks for the video! Sad that the engineers created something so complicated to run down the issue. A plastic module that in the cost of the Toal car is pennies on the dollar cost hours of Mechanic labor. With technology I hope they can create something that once you put it on the scan will tell you EXACTLY were the problem is so the auto owner doesn't have to pay hours of labor to find a $5 part that malfunctioned. Yet I am so thankful for the video it was very informative Seems to be a Chrysler, Dodge Jeep issue for sure.

Excelente video gracias por compartir

Very nice diagnostic.

Fantastic job dude thanks

very informative thanks

Nice works man. Saludos !!!

could u have tried doing bidirectional control of the different systems with your picoscope or verus?

I have a 2008 Chrysler T & C and having similar issues but things are flashing on and off not staying off. I had already noticed my overhead HVAC controls don’t work quite right and was just over riding them with my front controls but now I am going to get up there and check them out after this. Thank You for your detailed video.

Man thanks thanks thanks great info

Does that wire harness also cover the blind spot notifications? I am having the same error but before I got it I had an error with the blind spot monitor

Are there separate connectors for the doors, vacuum, radio, etc. on the TPIM? You took the door panels off and hvac unit out. Could you not have disconnected these modules on the other end of their cables? At the central control module (TPIM?)?

Great video!