Vauxhall Corsa D CANBUS Meltdown Faulty 'No comms' ECU, Body module, ABS & EPS replacement diagnosis

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Todays project was an epic battle to get a Corsa D running again... This is a long one, Initially the car was brought to us with a faulty non communicating engine ECU, after an initial OBD diagnostic scan with a Thinkcar Max scan tool & Autel Maxisys MS909 to read fault codes, it soon transpired it was a LOT worse!! A full meltdown of the CANBUS network had given the owner of this car a very bad day.. (Engine ECU, Body Control Module, ABS pump & Power steering all blown - literally!) Here we show how the in depth process of testing & diagnosing the CAN network for faults using wiring diagram schematics of the CAN-BUS system to see how it all works & testing the engine ECU (Engine Control Module) & BCM (Body Control Module) on the bench & programming new modules despite having the holy F**k blown out of them
For information on having control modules programmed for vehicles visit us at:
www.ecuconnection.co.uk
For information on buying the diagnostic scanner used on the testing process:
ecuconnection.co.uk/product-c...

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Опубликовано:

18 янв 2024

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Комментарии : 18

@8power0 3 месяца назад

YOU GUYS ARE THE BEST I HAVE EVER SEEN ON RU-vid ,,, AT DIAGNOSING CAN COMMUNICATION PROBLEMS . PLEASE WE LOVE THE LONG VIDEOS THEY ARE VERY INTERESTING . THANK YOU SO MUCH FOR YOUR TIME AND EFFORT AND YOU MAKE IT LOOK SO EASY !!!!!!!!!!!!!!!! 👍🏼👍🏼👍🏼

@JC-ECUConnection 3 месяца назад

Thanks for watching & your comment, it really encourages me to make more!

@jamesgarrard4361 5 месяцев назад

Hi Dustin Nice work regards

@JC-ECUConnection 5 месяцев назад

Thanks for the visit, it’s really appreciated!!

@farmtractor1690 2 месяца назад

I have error of bcm in diagnosis but in real I have a blinking light of glow plug in dash and poor fuel economy in my corsa d 2008. It's consumers 10 litre per 100 km and RPM jumps from 800 to 1000 . Please help if anyone have any idea about this problm

@JC-ECUConnection 2 месяца назад

Hi, thanks for watching!.. Firstly I would get a full diagnostic scan done on your vehicle by a competent auto diagnostician..

@phill3144 5 месяцев назад

Have you not tested the can bus for a short to ground or morw likely a ahorr to positive on the resr of rhe can bus

@JC-ECUConnection 5 месяцев назад

Hi, you raise a good point! Yes I did check for shorts between CAN hi & lo to ground & live whilst I was bypassing the CAN wires - unfortunately I didn’t record this part, I should of mentioned this & maybe I also should of included a synopsis of my thoughts of the root cause of the problem… Keeping in mind the original faulty ECU was drawing nearly 3 times the current of the test ECU, I suspect that the ECU was the culprit & internally shorted which blew the hole in the CAN chip on the board & sent a voltage spike up the CAN lines causing the whole lot to get fried.. anyhoo, thanks for watching & for your comment!

@davyarthurs 5 месяцев назад

I did wonder too why the CAN lines weren’t scoped before removing modules etc. I feel for the garage having to explain this one to their customer and the hassle which comes with a certain type of non-understanding customer, especially as this wouldn’t have been cheap either!

@JC-ECUConnection 5 месяцев назад

@@davyarthurs It was just quicker for me to put the module on the test bench, I'm not knocking scoping the CAN lines - I often do it & recommend garages to do it but its time consuming to take the covers off the plugs & back-probe them etc when I have a test bench & it takes a few seconds to rig it up on bench... and its warmer in the office!! & Yes, I have a lot of sympathy for my customer having to explain this to the car owner, thanks for watching & your comment!

@davyarthurs 5 месяцев назад

@@JC-ECUConnectionYep, don’t blame u for doing it the way you do with your setup! Thanks for taking the time to explain.

@mrpoles7607 4 месяца назад

Hi! I have same problem, no communication with bcm ecm ABS and eps. I changed bcm to other with same numbers and IT Didint change anything. Do you have bcm wiring diagram ? Red/yellow thick cable is only power supply to bcm?

@JC-ECUConnection 4 месяца назад

I would start by testing the CAN wiring for correct resistance, short to ground & scoping them for a signal, I do have wiring diagrams but my contract with Autodata is that they are not for resale / publication etc, a Google search should help, if not then you can contact us via the contact details on our website for further help: www.ecuconnection.co.uk

@mrpoles7607 4 месяца назад

@@JC-ECUConnection when ignition is off resistance between pin 6 and 14 on obd socket is 60.8 ohm

@user-gk4hc3eg9t 9 дней назад

Can you guys help me with a similar issue

@JC-ECUConnection 9 дней назад

We have a workshop in Norwich if you can bring the car to us, we also have many programming services available on our website, it would be best for you to contact us via the website with your particular enquiry: www.ecuconnection.co.uk

@jamesgarrard4361 5 месяцев назад

Maybe welding ???

@JC-ECUConnection 5 месяцев назад

Hi & thanks for watching!.. I did wonder this myself & also considered that maybe they jump started it with 24v but the customer - a good garage I have known a long time assures me all they done was put it up on the ramp & changed a front spring & wishbone, got it back down & then a non start! My biggest worry if there is a random short circuit that may happen again but there was no shorts or signs of any other faults!… a bit mystery, my suspicion was an internal short on the ECU or maybe to be continued!!