2007 Volkswagen Jetta 2.5L- Crank-No Start, ECM No Communication
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- เผยแพร่เมื่อ 19 พ.ค. 2017
- NOTE: its not a fuse!!!! lol, working on a 2007 vw jetta with a 2.5l engine, customer complaint is that the veh will not start, the veh does crank, no engine light with the key on, cooling fans are on high, these are signs of an ecm that is not communicating, found that there is no communication with ecm using the scan tool and all the other modules have a networking fault ecm no comm stored, I hope you enjoy this video and thanks for watching.
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Thanks brother did this to a Jetta today that has been parked for almost 3 years and seen by many mechanics and no one could figure it out damn thing just got back on road today thank a million times brother
Have been watching you for awhile and I know ever time Paul danner watches one of your videos he sheds a tear of the monster he has created THE FORCE IS STONG WITH YOU
Thank you! Thank you! Thank you! You saved me from totaling out my daughter's car. I'm so happy after watching your video. After going through the car top to bottom I followed your video step by step with limited amount of electrical testing tools. I tested 1,2,3,5,21,62. 62 - the red/black wire had only 3 volts running through it and as I moved the loom around it shut off completely.
My wiring loom was untouched. I started cutting it back, the wires looked perfectly clean but about a foot away you could tell the wires had been getting wet and there was dirt mixed in.
Then a saw an area of green corrosion that led me to the point that the wire was broken. I didn't actually see a break in the wire but it was definitely corroded inside the wire coating.
Not sure why, but that wire always corrodes.
why is it always more interesting seeing someone else diagnose vehices?? but thats what i do through out the week and its not as interesting haha
th-cam.com/video/fEFFVJGY5RM/w-d-xo.htmlsi=s6G2denEDl3d9lip
That was an awesome video, Nicely done. Wish all mechanics were as thorough as you.
Nice diagnosis, you saved the customer a lot of money.
Thanks man. exact same problem on an 08 vw jetta 2.5L...sat for two years...we had replaced fuel pump...done tons of fuse and relay checking, never thought to check wiring harness. original wrap, same wire as in the video corroded to the point i pulled it apart from itself. Appreciate the great tutorial!
I really enjoy your thought process throughout a problem thanks for taking the time to explain and for posting
Very nice map to success. Thanks for taking us along.
You are very knowledgeable.....
What makes me excited is how you use your tools absolutely awesome
It's nice to see it not always so technical,,,keep up the good work👍👍👍
wow, I am seriously so impressed with this video. You taught me so much just in 15 mins!!
Nicely done. Much reward in fixing that which many cannot. Simple process and NO, I would not have started with the canbus. You followed the simple logical process. Nice to see a younger pro doing things the right way.
Great video! Really liked watching you hunt this down. Thanks for posting
Very cool diagnosis and fix Tom. The can signals were indeed slightly different but very much like the ones you and Paul showed us recently with the "mis-located" fuse. Enjoyed watching you work. Thanks for sharing this!
th-cam.com/users/shortsh0msQeOeQYc?si=5TFaNgQFiq2FFaxA
What a wonderful story with a happy ending. 👏🏽Bravo
I am always suspicious when I see electrical tape. It typically means someone has been hacking into wires, usually cutting them an inch from a connector just to make them hard to repair properly.
Good job on the diagnoses!
Great job! Very satisfying to watch a pro go through such a problem with seemingly no starting point for us diyer's. Subscribed... Thanks!
Like this one. This guy was like a detective on these numbered wires. Most shops I've been to don't even take that time to read a diagram.
Great video. Had in the shop a 2007 Jetta also pin 62 only had 2.2 volts pulled the wires....black and red had corrosion in it. Repaired the wire cleared the modules and all is good. Thanks again.
Nicely done!
Tom another abdolutely brilliant video.
Very clear concise,methodical.
Superb job.steve from the uk
I picked up an 07 Jetta yesterday for $200 with the same issues shown here. The dealer quoted the owner $2200 to replace the ECM. I tested it the way that you’ve shown here and had a short on the same wire. I fixed the short and the car started right up. Thank you for this video.
Distorted can signals will be my go to from now on with a no comm, great vid.
nice, I think its a great test!!
Thank you for the amazing video! Followed this process and found the same corroded wire!
Hi again Tom you are a genious ! I had same simptoms no check engine light and fans had a mind of their own cause they would turn on for no reason so i did everything just like you have it here documented in your video and guess what it was same wire Red + black and i used my test list and traced it and there it was with same white rust inside wire cut it and jumped wire and boom turned on right away ..was very happy when i saw check engine light on cause then i knew i was in the right path !!Again tnx a million i wish you were near by to treat you to some Chinese food or some Ribs but i guess we far away from each other ...mike tnx bro you are a life saver !!!take care pal....Eladio
Even this video has 5 yrs, my jetta does the same thing! Thanks for the solution
Dude u saved me many many hours of searching. Same exact problem. Fix the wire now it runs. Thanks a million buddy
Which wire was it? He talked about number 62 being red and black early in the video, but looks like he is fixing a black and yellow wire
Good one TOMY, always fun to watch and listen to ur process . thanks for sharing cheeeeeeeeeers.
thanks Tommy, great learning video cheers sandy
excellent video!!! you help me a lot to fix my car!! congrats!!
Very interesting!...Good job on locating ACTUAL problem....
Thank you. This actually is a common problem on the mk5s
You are genius, and it's helped me to solve my problem. Thank you
You may not even of had a short in the wiring but that is what it is supposed to do, lead you to thinking that will find it.
Excelent job bro ! I have same problem now i know what i have to do ...tnx a million Tom.......
Tommy, Paul taught you well. and apparently you paid attention !
That was perfect and very instructive 👏👏👍
Great work once again thanks for sharing 👍
Awesome vid. I had a car dropped off today with the exact same symptoms. No comms with the ecu. Fans running, won't start. This video will be helpful with troubleshooting. I have All Data, but your video provided what pins I need to check. Much appreciated, and happy Thanksgiving.
Dude that was awsome great trouble shooting skills
Wow bro u truly the VW expert
Good job. VW wiring diagrams is fun to track :D
Can I just mention how watching you work with that wiring reaching all the way back to the firewall made my lower back hurt.
Well done Tommy!
Pretty crafty. Outstanding diagnostic. VW are notorious for thses broken/ rotten wires and water infiltration, damage.
Great video. Thanks for your 21:41 minutes of interesting VW realities. Got to love the internet and Mr. Tom!!29Aug18
You are the future Scanner Danner !!
awesome video man .. you know your stuff .. very impressive
that was awesome and satisfying... good job..
1000th like lol, thanks man I owe you one I'm 99% sure this is exactly what's going on with the car I just got
Is it same problem or different ?... my daughter has a 2008 that's acting up
I also think this is what's going on with my vehicle as well
thanks thanks thanks you are a life saver , same exact problem and same exact wire .
Wow i have the same issue and now i can reference your video to the mechanic
U are a professional my 2008 Audi A3 2.0 T is also doing the same I hve also removing my wires frm ecm plugs but jst dd it halfway
Just got one towed in as soon as I turned the key and got the scanner ready and those fans kicked on I knew I had a problem with the pcm so the carpet was wet I just moved the rubber seal under the hood as sure enough it was full of dirt water and the fibers from the fire wall so a mouse house and broken wires repaired that and everything worked 👍
Well done man!
i clicked on your video thinking its scannerdanner just because of that yellow dmm :D
Thanks Tonm for share ☺
Nice fault finding man.. I’m about to start on a 2009 Tiguan.. no start, no comms..!
I suggest doing a capacitive discharge of the car battery before changing out parts. Disconnect both battery terminals, starting with the ground - (negative), connect both connection leads with a jumper wire for at 1 minute. Reconnect both battery terminals, hopefully that helps.
That worked with my car!
Great video very good job 👏
Great video, I'm having the same problem with my 2004 Audi A4 now I know what else to check...
Awesome thanks for sharing.
you are the man thank you
Excellent Job!
Nice job mate
Nice job!
good vido tomorrow i will check again for pin 3+ 1and2 - 21+ and 62+ thanks
Great job.
Man u would be a good friend to have
Great job
Yes, the dreaded "somebody was here" Least it lets you know you're close to finding it:)
Then there are all the mechanics that can't find these problems.
very nice job
nice job tommy
The moral of the video-----it pays to check the power and ground______good methodical fault diagnosis.
Nice video Tommy.
I am curious to know if this CAN signal distortion is a VW only issue when a power supply is lost or whether or not it is the same for other manufacturers.
In your other video with Danner you went back and questioned the resistance of the TCM CAN lines and was curious. This led you to look further. I am not sure that an issue inside the module would pull the reading up or down since the TCM did not have one of the 120 resistors inside itthat returns the 60K value. I think your logic to question replacing the TCM was good but am still not sure that even if the TCM was at fault that you would have seen a different value as the testing is all done powered down and all these lines carry are messages.
Still a great catch none the less.
Maybe we will have to wait until a faulty module is found and check the CAN resistance then to know for sure what goes on.
Thanks for the video
Great diagnosis simple straight to the point.
good video
As someone who knows zero about cars I learned a great deal about my Volkswagen. I’m hoping it doesn’t cost too much to replace this thing.
Replace what thing?..your VW?...that depends on what you get to replace it..duh
@@Jeremya74 have a nice day
@@JustGrowSG wait?...that is what you were saying?..I thought I was misunderstanding..😂
Positive lead ftw👍
Good stuff, where did you tap into for CAN signals? What pins?
U a best !!!!!!!!!
I have an 08 Wolfsburg that shut off during a snow storm. A few other mechanics did a few tune up things and now it has a misfire from hell and about 30 codes (all low voltage or implausible values) found an aftermarket alarm/ amplifier cluster F that had shorted and took out the ecm fuse also killed the lift pump and burned up the hpfp, a air temp sensor wires were dead shorted, and the 12v feed to a module under the steering wheel was shorted. After removal and repairs it still has a ton of codes and misfires. I think I have a hidden short or the ECM is cooked. Idk but I've tested every relay fuse and connector to do with the motor and they are good.
that green corrosion will get you every time!
Good job finding that wire, most wudda changed the ECM
That's exactly what most shops would tell you they'd have to do
Awesome job. Is the connector that was right next to the damaged wire the factory "(D78) plus connection 1" or splice in the wiring harness that was seen in the wiring diagram? I am trying to sort out an identical problem. I have no power at the T121/62 0.5 ro/sw wire.
good job!! scanner Danner JR
Have found evidence of the wiper motor arms coming in contact with that wire bundle connection the ECM on a 2005. Also found evidence of moisture inside the ECM. On this car I found the drain holes were stopped up by leaves in the area under the ECM that caused snow and water to cover the ECM wires. Could be the reason VW changed the ECM location on the MK6 cars.
Very impressive. where would the ground wire be located for the ECM. Would it also be located under the battery tray?
nailed it.
an excellent diagnostic master. it was a headache but you did it that's important. I have a 2006 Volkswagen Touareg 3.2L no power supply to fuel pump. What do you advise me to fix this vehicle. Thanks
Nice👌
You may happen to have the same diagram but for a 2011 vw Jetta ? I saw the two grounds and 3,5 pin but not the rest of the pin, they were not used on my model, i saw the same color wires but in different pin positions. Thank you
This exact thing happened to me. However my gear selector PRNDL started flashing also. Plus the Steering wheel came upon dash.
great video! I have a problem with an '07 jetta 2.5. has me pretty stumped. throwing codes for AAT (IAT) sensor high voltage, and ECT high voltage. Ref voltage is good, sensors both read fine. Seems to only set the codes on start up. Car runs great and I can clear codes while running and they never come back, can shut off after clear and key back on and no codes. Only set when car starts up. Any ideas where to go next?
Hi! I have the identical problem but when I probe the last positive wire like you did I get the exact symptoms! But when I took the tape off the wires seem ok. I am curious- could the ecu be faulty if the wires are good? I'm thinking it's that wire- there was a mouse nest on it. But no damage to the wires. Ecu fail?
That distortion is definitely pretty neat. Nice find on this one man, It's pretty strange the original repair didn't hold up, it looks like it was shrunk properly and all that, or no?
Makes sense to me!
Lmao, you do what you've got to do bro. 😂
the repair seemed legit
This is the same issue I’m having on my mk4 Jetta 2.0L
I went to change the plugs, realized I didn’t wanna tank the leafs from the wire so without the tool I never even tried. Hooked all my vacuum lines back up correctly and it just turned over and over and eventually killed the starter. Still don’t know if it’ll start once the starter is replaced.
Where do you get your diagrams from? Got the same problem on a 2014 VW Jetta S.
Good video, Im having same issue on a 2002 1.8T. I jumped started signal wire but im not sure because its getting 1.4 volts on the starter and i have to check grounds or fuses. New starter but still cant figure it out. I need to get a diagram for the Jetta
After many days of fighting the same thing on a 2010 VW Jetta 2.5, and replaced cam sensor , crank position sensor, battery, clock spring, and many other problems , car would continue to shut off while driving. Pulled ECM OUT , while connected and shook wire harness , car shut off, and it was wire 62 corroded in the bundle. Why is this not a recall? Thank you soo much for this video.
Hey guys! So I am getting nearly the same problem as in this video; except my check engine light is on, and I get three distinct beeps when the ignition is switched on, indicating low oil or oil pressure but oil levels are fine; the car cranks but no start and no spark(battery, plugs and coil all fine) I am getting ECM code 01314 on my transmission, brake electronics, Airco and instrument cluster, any thoughts?! Thanks!