U0101 TCM No Communication (2010 VW CC)

[@baxrok2.]

Quick and thorough diagnosis. Looking forward to the fix. Thanks!

[@duanedonaldson2262]

Awesome video and diagnosis. I thought you might have tested for resistance after checking for CAM COMMS, the pins were there and you could have checked ohms again after pulling the plug for verification of a resistance problem in the TCM. Going to part 2 now, great job.

[@fieldsofomagh]

Like your initial low tech approach which sure can shorten the journey. Diagnosis job well done.

[@halopersin]

Awesome diagnosis. This video will be a great help in network diagnosis lessons. Thanks for another great video!

[@OneAuto]

The dreaded DSG! That's going to dent the wallet. Nice video Tom

[@joelaplnski5394]

Ive learned a lot from u bud. I like the scanner danner mentality, powers and grounds, powers and grounds, etc.

[@PositiveLeadDiagnostics]

thanks for watching Joe! much appreciation

[@100Ronster]

Good thorough diagnosis. Thanks for taking the time to share this.

[@wyattoneable]

Nice work Tom. I liked following along to better understand the process.

[@shaunsautorepairs5410]

Wow..i tip my hat to you with these sort of jobs... Faced with the fault, the variety of codes and the lack of wiring diagrams i have access to id be shipping this job out to someone else.

[@rrmech11]

Definitely enjoyed the video. One simple question Tommy, could you of unplugged the battery and and checked the terminating resistors at the data link at pins #6 and#14? For the 60 ohm specification?

[@PositiveLeadDiagnostics]

I think that you can, if I remember correctly me and scannerdanner did that with his linespy and you do get a network resistance reading, the only difference is that its going through the gateway, it ties into that somehow not real sure how though

[@mikeeustice4452]

Great video Tom one of these days you will have to show us the coding of the new module with both the factory scan tool and maybee if you have it vcds keep up the good work

[@PositiveLeadDiagnostics]

maybe il get a vcds soon lol

[@meddial-mandhari9509]

Great video.. It would be nice TO SHOW how to change the TCM..

[@thekoleroy_at_varsity4103]

Did you test this with car on or off? Tested the same plug only get ground when car is off. The third positive turns to into a ground when car is off.

[@christophermanley653]

now if i can work on these keys on this keyboard similar to how i work on cars, id be ok. lol God bless you, Sir.

[@AutodiagnosticoDetroit]

TOMMY friend, should not measure the ground i voltages with lamps of high consumption 8amperios)?

[@tgoodm1]

Can you elaborate? I was aware of dangers when measuring voltages and grounds supplied by modules.

[@AutodiagnosticoDetroit]

ok, I refer to the feeds that come from fuses and chassis grounds. regards!!!

[@PositiveLeadDiagnostics]

that test light is on 185 milliamps, that circuit will be fine

[@AutodiagnosticoDetroit]

ok friend Tom! regards!!!

[@rscelectrical7091]

Autodiagnostico: 8 amps @ 12 volts would equate to roughly 96 watts, where would you find a test lamp that big ?.

[@robruark7623]

Thank you for this video it helped me out keep up the good work

[@acr2505]

Hi Tom! Thanks for the explanation. I have a question. I have a no communication TCM problem and as i saw in this video, i should check: - can high - can low - power - ground - resistance test If all of that is ok, the problem is the tcm. Should i check anything else before confirming it is the TCM? It is a 2016 audi a7. Thanks!!

[@PositiveLeadDiagnostics]

Exactly!

[@acr2505]

Positive Lead Diagnostics thanks!!

[@EXOVCDS]

I'm guessing that the big flat spot in the can signal is where the TCM signal should be. Nice verification of faulty Mechatronic.

[@PositiveLeadDiagnostics]

I just wanted to make sure I had a network at the tcm connector

[@marcogarcia296]

great diagnosis! i’m only about 5 years too late but i have some questions! a mechanic rebuilt my transmission after i encountered Transmission issues after an accident, programer was unable to program new TCM so the mechanic got a new TCM because his opinion was that the first new TCM was defective. now car has these exact same symptoms, any idea what i should check? thanks in advance!

[@PositiveLeadDiagnostics]

I would be checking the wiring to the control module. Powers and grounds and the can wires. Easy visual checks first to look for wiring damage from the accident.

[@JOHNPHUFNAGEL]

Why do you check the resistance of the network/ECM when your suspecting a TCM? if there was a problem with the resistance wouldn't that have shown when you tested the can with the pico? also if there was a resistance problem would you have other no com with other modules? There are a bunch of other questions I have but I will wait for the answers on these. Sorry if these sound like dumb or basic questions but I haven't had any experience with networking on cars YET. Thanks great video

[@PositiveLeadDiagnostics]

the reason I checked resistance was to make sure the network was good from the tcm out, could it be possible my can wires to the tcm are broken near the connector somewhere and the can messages I see are actually from the tcm and not the other modules? that was my thought when doing that. with the tcm unplugged the only fault I have is tcm no comm, the tcm being unplugged would also be a substitute for an open in the can wires near that tcm, so if I didn't have the resistance at the connector that would potentially say there is a wiring issue

[@diegom.sanchezdelgado1065]

Hi my friend i enjoy de video, so do u fix the car? whats the final problem? my car do the same...

[@8power0]

Very good video bro please keep up the great work..., LOVE DIAGNOSTIC VIDEOS THANKS !

[@dnlmachine4287]

YAY!! Put the control module INside the transmission. Real helpful there, car manufacturers. Bunch of scum, every last one of them. Next thing they will put the steering wheel in the oil pan. Hold on to your user-servicable vehicles and machines, tools etc people. Stay gold.

[@chalinoahuesoduro5566]

Great vid. Wanted to ask what program are u using and how can i go about purchasing it any direction would be appreciated

[@PositiveLeadDiagnostics]

I’m using Odis. Which is the vw factory scantool. It can be purchased through vw.

[@philh9238]

can you pull the network down if you use a testlight on the can lines? and cause no comm with multiple modules never tried it myself

[@PositiveLeadDiagnostics]

you probably "can". lol but is it risky? could it hurt a module ? idk too risky to experiment on a customers car lol

[@ernestoruesta9446]

I have the same problem in a 2009 Tiguan, I'm sure the tcm is inside the fender, but before I replace it I need to test the wires to see if there is power, where can I find the wiring or pins diagram ? my rack and pinion was replaced and the vehicle never move again, my shifter moves but there is no trasmition or TCM visible, thank you

[@itridz5860]

Great job Tom! is the new TCM should be programed ?

[@PositiveLeadDiagnostics]

Yes it will need programmed

[@drxs9305]

Friend You respair the 01309 cose un a vw Tiguan 2010???

[@gharbimecatronicien576]

Hi,how can i test the tank pump for a golf 7 2.0TDI, it contains 4 power supply wires, thanks

[@phoenixautodiagnostics4209]

Great video Tom, I enjoyed it.

[@vodonnell1]

Happy New Year, very interesting video thank you.

[@PositiveLeadDiagnostics]

same to you Vincent

[@mariachiwaula7140]

I'm having exactly the same problem with my Polo 6r 1.4, unfortunately I'm in Malawi where Knowledge and expertise of such issues is lacking, don't even know where to start from. Changed the battery, but the problem is still there. The code is U0101 lost communication with tcm and code U111100 Function limitation due to missing message. Some are saying it may be the transmission fluid, I'm just not sure. What just surprises me is that this problem is intermittent, if I start the car and the gear indicator is on the dash and drive for about 5 to 10 minutes, the gear disappears and the gear lever led light of that particular gear starts blinking amd the shifter will be stuck in the gear it was in when this happened, I switch the car off, after some hours, it's normal again, I start it then after some minutes it misbehaves again. One thing though, every morning it starts without hustle but after some minutes it's possessed again. Checked the fuse link panel above the battery and some cables had debris, cleaned them and turned the car on, the engine check disappeared, the gear appeared on the dash then started flashing, after some minutes the CEL reappeared and the gear indicator disappeared again. One thing I noted on the fuses above the battery was that one cable which has a red cover, had a dark color at the tip of the cover and the copper wires had some greenish stuff, can this limit the flow of power? The problem is I don't know what the cable is for but it's covered in red.

[@real_mutant]

Hello. Did you repair your car? I'm from Ukraine and I have the same problem (

[@mariachiwaula7140]

@real_mutant yes the problem was that apart from the cable which overheated above the battery, the some of the thin cables going to the fuses beside the battery were wearing out and were damaged, changed both cables (above the battery and those going to the fuses) and the problem was solved. It seems the 2 fuses were for the TCM and another for the ABS, so they were not getting enough voltage, which is why they were working on and off, the ABS sensors were all fine but the warning light was on the dashboard, after fixing the wires they disappeared. I wish I could attach the pictures of the cables I'm talking about but YT won't allow me, but I hope you've understood

[@real_mutant]

@@mariachiwaula7140 Thank you very much!!! Tomorrow i'll try to repair!

[@mariachiwaula7140]

@real_mutant seems my problem wasn't solved😭😭😭😭 it has started again, I can't start the car cz it's showing P/N on the dashboard and the gear isn't showing. Now someone says it may be the transmission range sensor which is responsible for telling the ECM which gear the car is in

[@real_mutant]

@@mariachiwaula7140 I solved my problem. The problem was in mechatronic unit with some cables. I can send you photos if you need.

[@epicsseven7686]

Sounds similar to my KIA OPTIMA 2016 dual clutch. A few ago, an almost new battery was drained. It barely took 1 second for it to start up after the 1 second charge The car drives, but doesn't want to go into reverse. Today, I just noticed that doesn't recognize that it's in manual mode. Strange, because my car was fine the day before. The only thing that I can think of is after the car wash possibly wet something. Anyways. The code that I got is, P073e, with the actuator stuck in close position.

[@odanebarnett3112]

Nice video Tom 👍

[@marthadominguez7242]

Gracias amigo.

[@MohdSuhail-it6kt]

You are good men thnx to your video

[@urbabiezdaddy]

I have a vw Cc 2010 with the code u0101. I ran the car 200 miles after I fixed the misfires by replacing oem coils and spark plugs. All of a sudden on the freeway my car seemed to go into neutral but went back to normal then the u0101 code popped up. If I turn the car off an on I can drive a little while before it does it again. Do this sound like the Tcm is going out? It runs fine no hard shifting

[@aspringer82]

My 2011 just did the same thing what did you end up doing?

[@thormosebar74]

Had my 2012 GTI do the same thing, what did you guys end up doing?

[@johnyu4790]

I have a 2011 Golf GTI with 130,000km in it, one morning had this same problem with P transmission flashing, but The car wont start when turned the key and give a message “depressed clutch” on the dashboard. My question is before done any test like you did. Is there any warning or indication when the dsg clutch worn out that the car will override for safety? I had obd eleven and done a basic settings, the message is U0101-lost comm with TCM static from engine module 1, and at gateway 19 shown faults: 01315 TCM no signal, this goes the same message on 09 central electric. Thank you for any insight.

[@lyfthrucryst9]

I currently have the exact same issue. Any thoughts to consider before jumping into tcm replacement? Tia

[@rbland]

What was the fault in the end for you?

[@rbland]

Did you ever find out what was wrong?

[@haywardsautomotive6156]

Great diagnosis Tom...will there be a part #2?

[@blond80]

That cable, is it located at The same spot on a golf mk6 1.6 TDI? Can you pleaze send me picture where it is? And where is The TCM located, is it in The fender on a mk6 tdi 2011?

[@denverrank6736]

Any answer on thus question please

[@ramongumbs6804]

Great video very helpful thanks.

[@Pablo_Automotive]

Great job Tom ☺🔧

[@billyyoder8171]

Thank you Tommy. Good job

[@DylanRabier]

Thanks Tommy. Nice video! 👍

[@erwinvarela1531]

How much was that wrk

[@zvonimirbobicex-4962]

i wonder what the resistance would ve been if u had measured it on some other location, when the TCM connector was plugged in?

[@PositiveLeadDiagnostics]

not sure if it would have made a difference, the terminating resistors are in the ecm, if the tcm is open I don't think it would change, if the tcm was shorted then I would imagine my entire network would have been pulled to ground, causing that network be down and potentially the car wouldn't even run

[@quentinburquier2642]

@@PositiveLeadDiagnostics f

[@nicos9777]

Hi! My 2010 has an issue where it seems to fall out of gear as i’m driving, (the rpms will spike) and then it will just go as if I was in neutral. The D is blinking, when I put it in Park it gets stuck there and the P blinks, could this be the issue?

[@PositiveLeadDiagnostics]

You have a different transmission in your Tiguan. What faults do you have stored?

[@gencrow6454]

I'm having this same issue in a 2012 vw beetle turbo. Solutions?

[@mikeeustice4452]

All I have is a launch pad I've never been able to look up much info on the coding info. I have a hard time finding the correct measuring block

[@PositiveLeadDiagnostics]

the factory scantool is pretty good with that kind of stuff now, ive heard horror stories of the old vw days, I also hear good things about vcds

[@nicknicu1787]

Great video Tom! Those Mechatronics go bad all the time,aren’t they...?

[@PositiveLeadDiagnostics]

ive seen a few

[@grumpysgarage4790]

👍 Good diag Tom

[@mo3mo937]

Could this overheat the car as well

[@PositiveLeadDiagnostics]

This should not cause an overheating condition

[@NewLevelAuto]

🤔 what could it be ? Let me watch and see

[@NewLevelAuto]

Pomona 6405 , so far first thoughts

[@NewLevelAuto]

Nice diagnosis ! Very nice video brother .Now show the ODIS programming and you're all set for part 2

[@swav100]

Do u know mandy consemption

[@NewLevelAuto]

swav100 Mandy from ADP, great guy

[@swav100]

New Level Auto yup but his videos are not good that robot things got to go

[@Airman..]

Nicely done

[@mad_quack]

I need to know how to fix my 2007 Charger 🤔 it has lost communications too...

[@PositiveLeadDiagnostics]

Check powers and grounds to the module and make sure the can network resistance at the tcm is ok

[@rahrah8076]

mad_quack_in_the_box i Believe the TCM is in under the steering wheel..you have to remove the lower panel

[@danielgarcia9095]

How much do you guys charge for diagnosis

[@PositiveLeadDiagnostics]

I think the dealer is $117

[@christophermanley653]

Thank you Tommy Your A true b

[@christophermanley653]

blessing.

[@vwqudratsaven2961]

Hello from Malaysia..I just sub yr Ch.. TQ...want to talk about VW TOURAN... just for info...EPC..light on..during drive...you know guys... Battery is due for replacement..Change the Battery...fault cleared...Tq

[@penijaminisilimaibau8690]

Great

[@stupa55]

That's not going to be cheap for the costumer :-/

[@patriciathomas9949]

Dude you never completed the next part of the video with the completed ending you said you would . Videos should be done start to finish . Cause you only gave half of the work that needs to be done .

[@drxs9305]

Help please

[@evansmarts775]

Very nice :) dsg thumbs down boo ( lol )

[@aymenmohamed1134]

👍

[@noekumagay7114]

I would reset the computer first

[@tcifusion4497]

REPLACE MECHATRONIC.......HAHAHA............NO WAY!!!!!!CHECK FOR GOOD WILL WARRANTY...

[@rohanboswell5408]

Ehem

[@fernilu6998]

Second

[@abdalgadermohamed5636]

Great