Vauxhall/Opel Corsa D 1.3 DTJ P1120 and limp mode. Fault finding and repair.
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- Опубліковано 7 вер 2024
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Hi
This car came to me with the complaint that the service or spanner light was on, and the car would not go over 80 Mph.
After a scan, P1120 was found to be the fault...
But what was actually causing the fault, was something quite different than what the code was pointing to...
Follow me on this video to find out what was the problem...
Flux used: NC-559-ASM-UV
rover.ebay.com...
To clean: Isopropyl Alcohol
rover.ebay.com...
Soldering Iron: Temperature controlled soldering station.
rover.ebay.com...
Hot Air Gun Station:
rover.ebay.com...
Desoldering Vaccum Station:
rover.ebay.com...
Hope you enjoy the video.
Any questions or comments put them below.
Like always, thank you for watching!
Not many would touch a ECU ...Thats why i love watching your videos..You go way beyond and give it 110%...thanks for sharing....
Thanks for watching my content...
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You're so professional, I wish everyone was like you.
Thanks!
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I admire your diligence and rigorous approach, brains and practical ability!
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Thank you!
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@@LMAutoRepairs I had just replaced the camchain on my Corsa D DTE diesel, (horrible job but better than waiting till the camchain fails) the reason for no performance was that I had not reconnected the vacuum line to the vacuum pump on the inlet camshaft so the turbo actuator was not working. I do have an annoying spanner sign caused by the P068 code neutral position sensor which I can't clear, not yet sure if it's ECU or sensor. ECU connection shows 4.9v reference voltage, 0v ground, 11v on the signal wire which seems odd to me. Once again, many thanks for your efforts!
Got exactly same unit at the moment on the bench, mine isn't communicating, was a bit corroded on the side opposite to connectors, not too bad, but cleaned it and checked it and still no go, so back at it and we'll see. Thanks for the video, was thinking of swapping eeprom when I get replacement unit, you just answered my question. Thanks.
Hope you get it sorted!
Thank you for watching and for your comment!
Watching this video whilst at the beach on holiday in Albania!! No matter where I am I always have time for your video's😎
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I am very humble...
Thank you for watching!
Hope you have a very nice holiday!
Great effort on the repair. Top man. The most important thing to take away for Corsa D owners is to clean out the drains indicated in the video. If they are blocked water can't escape, will build up and ingress into the ECU case causing damage to the circuit board as seen in the video. The ECU sits on the same shelf level as the drains. Ridiculous placement of ECU by Vauxhall. Every Corsa D I have seen has the tool through the car service light permanently illuminated I suspect as a result of the water ingress to the ECU issue. Fortunately most drive normally and further damage avoided if the owners keep the drains clear.
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Another stupid place that vauxhall decided to put the ECU! And once again another good repair.
Agree... so many places where they could have placed it...
Thank you for watching and for your comment!
First class. The best electronics man on UA-cam.
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I wouldn't take it that far...
But thank you for watching and for your comment!
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Appreciate watching this video mate and for you taking your time, to see if you could help us with the faults that you're having, but if you are in the UK,you don't want to exceed 70 mph anyway on a British Road, so if you wasn't aware that 70 is the maximum speed limit, I thought I'd just share that with you,
Good DX and repair. Louis has much better access to Apple Schematics. I am surprised that no one can get the schematics for ECMs on cars. It would have saved hours of trying to repair but still requiring another PCB. Not wasted time though as you shared.
Yes, Louis does...
I would love to find them for ECUs... as I said, I never found anything relevant...
Thank you for watching and for your comment, really appreciated!
Spot on mate, quality fault finding as usual...
Thanks!
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I think the connection you have to remake from the throughhole is further up the side of the ECU, have seen others do it a couple times
Possibly...
Thank you for the comment!
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EDC16 Ecu with no legs on MCU very common on high side injectors to fail. pin32 is the ground for app sensor 2 that’s why you getting beeping sound on middle pin of voltage regulator. Pin 1 on voltage regulator is a ignition voltage coming from pin 52, pin 2 on v-regulator is 5v, pin 4,5 is 2.5 volts. Ignition voltage goes to those black diodes above the two 100 ohms resistors from forward base diodes to two resistors then to the capacitor or NPC ( non polarised capacitor) then last to the voltage regulator. 90% of one side of the NPC is connected with ground. Pin 15 is 5v ref for app 2. Pin 35 is ground for app 1 . Pin 41 is app 2 signal. Pin 65 is app 1 signal . Pin 83 is 5v ref for app 1. Manufacturers don’t release circuit board schematic unfortunately that’s why aftermarket and dealer mechanics they just replace entire Ecu. Unfortunately tracing is the only option to find a fault on circuit board
Hi
Not sure what you are referring to...
This was not an EDC16...
The Corsa D 1.3 cdti comes with Magneti Marelli ecus...
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EDC16 is the second generation of the Ecu that manufacturers used in their vehicles 2005-12 was the duration. EDC16 MCU has no pins/legs that’s how we find what generation is the ECU. unlike EDC17 they have more pins/legs I have seen 41 pins only on one side of the MCU. also on edc17 (TRICORE) says on top of the MCU. Magneti Martelli, Bosch, continental etc are the company’s that uses their logos or names on top of ecu’s.
I know all of that, just don't know what that has to do with the ecu in de video...
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Nice one buddy, these Corsas can be a nightmare :-)
Yes they can....😥
Thank you for watching and for your comment!
Can you remember what was the voltage reading and ratio on the faulty app sensor after repairing ? Also sorting the 5v reference at the signal wire shouldnt make a good working ecu to read 5v ?
Very rightly done....
Otherwise waste of time... Great👍
Thanks!
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I removed the big cpu next to the eeprom and checked all the pins for continuity from the other side to see if I could see whare the middle trace would go to still never got it. Checked all the tabs wtf man so annoying
That is why I always tell to everyone to put a clear coat over the PCB. DO THAT people. No water damage at all.
Untill snapping... lol
Just joking...
Thank you for watching and for your comment!
Thank you for another GREAT video!!!
I thought the 2 sensors in 1 is safety measure so that car could not accelerate due to a faulty input...
The car goes in limp mode if one fails...
Thank you for watching and for your comment!
Perfectly done video. Well done! 👏👏
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Very helpful video
Thanks!
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Really good repair, thank you so much! :)
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Thank you for watching and for your comment!
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If my corsa won’t recognise me revving, rac said it’s throttle position sensor. I have replaced throttle and sensor and it didn’t fix so I am replacing throttle body ?
Perfect, thank you, absolutely respect...
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Thanks!
For watching and for your comment!
good call resealing the ecu
Absolutely...
Thank you for watching!
Тоже такое было, именно также. Отвалился 41 пин Педаль газа 2 часть. P1122
Let me ask you something. I have a 1.3cdti Corsa D, 2010. These have the water damage ECU due to their really stupid location under the wipers. The drain holes get plugged up and water builds up and damages the ECU. Well, before this my car was running well.Then after issue, would not start. I am a mecanic but due to time I had to take it to a shop. I got a used ECU and it was programmed to my car. It's been about a thousand mile and the car feels different. First it seems like it consumes more fuel. Then I have a slight engine vibration if I am standing still and barely increase RPM. Could this be related to the ECU, may be being used it had an issue or that the programer did not program it properly or should I be looking somewhere else?
Hi
First make sure the ecu you installed is from a car with the same engine code, and that was not remapped or something...
You can try to flash it with SPS, that should install the original maps...
But, check the car for codes first...
One more thing, I guess the ecu you installed was used, I have had instances where used ecus were send to me damaged...
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Hi do you know which part causes capacitor 1 low voltage permanent injector 1&4 low voltage
4:41 hold it there for a sec. How many failure modes has a potmeter? Do you think there is one failure mode, where the sensor would give 100% full throttle? Is this safe? It isn't that you couldn't drive the car, but how many death occupants would be on GMs shoulders?
No...
I have seen them where with one track not working, the car still drives, but for example will not rev above 2k and no speed above 30 mph or something like that...
If one track reads full throttle, idle or no reading at all, but the other still gives a completely different reading, or gives what the ecu expects to see, the car goes in limp mode and puts the car in those conditions...
I recall a Nissan I have done way before UA-cam,... one of the signal wires was damaged, giving an open circuit... the other one was still working, the car would barely drive, but was dropped to me driving... same with this Corsa....
I am probably wrongly assuming that all manufacturers and all cars behave the same, and should probably have mentioned in the video...
Hope makes more sense now...
Thank you for watching and for your comment!
The pots read the inverse of each other. Nothing to do with calculating better, but the ECU knows if both read inverse of each other both are okay and not damaged. If one is damaged you have limited throttle position available and limp.
@@blavenexplorers
Possibly...
Thank you for watching and for your comment!
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first push on like bouton,after watching video,always god videos with god information,thanks to you!
Thank you very much!
For watching and for your comment!
Great video . But would be better to adding more video after replaced ecu value on autel . . Thanks b
Hi
Thanks... for watching and for your comment!
What exactly do mean?
some more video after replaced ecu live Data on autel . And we compare the difference ... .👍
@@kkoo4284
Got you... yes I should have done that...
Sorry...
Bloody lovely sir !
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Thanks Nuffz....
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Hi great video 👌🏽
I’ve got an Opel corsa D 1.3 CDTi which I’ve already changed the turbo 4 times within 3 years from reputable mechanics here in South Africa. The car drives but it’s in limp mode (no power). What could be the problem? Because it keeps on breaking the turbo.
Thanks
Scan the car... oil pressure or oil feed and/or drain pipes are the first things that come to mind...
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There's the problem, someone put fiat parts in a Vauxhall
😂😂😂😂😂
That's also true...
Thank you for watching and for your comment!
I have a 20 year old Fiat marea just like a new one. Zero faults. It all depends on your upkeep.
Well done mate
Thanks!
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I have rhe same issue
hi Luis
good test
but ï need clarification when you putted jumper wire between voltage reference and signal wire , i think that in this test it should tell us that ecu is good , but in your end test you find the ecu is fault, can you clarify this please
Correct... which means that the issue was further inside the ecu...
Hope makes sense...
Thank you for watching and for your comment!
@@LMAutoRepairs thank you so much for responding
i mean when you did test jumper wire you find the correct value
from ecu , that is mean the ecu and wiring is good and fault is found in sensor only in this test , but ere the ecu is fault why ?
hope i make sense
@@maforautorapair5935
Yes it does... the pedal testes also revealed no issues with the pedal....
So, pedal good, wiring good, ecu feedback looked good, but still gives error for the pedal... ecu was the only thing left...
@@LMAutoRepairs thanks for respond and for your time
Thank you for new video
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Thank you for watching and for your comment!
u the man!
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Thanks!
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@@LMAutoRepairs i had exactly the same fault on the same car today. I knew as soon as i saw the fault code it wouldnt be the accelerator pedal, watched your video and then took a look at ecu and could see water had been there. Customer didnt want to go any further.... u saved me a good couple hours there mate. Thanks
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Yes... if there was signs of water...
Hi my8 opel corsa c 1.7 dti me exu kit car stars ok but i have no gas aceleration pedal at all car stays at 1200 rmp what could be the problem thanks
Top man as always
Thanks!
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Great work mate
Thanks!
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Where are you based ?
Nice Job man
Thanks!
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Amazing video has always mate
Thanks!
For watching and for your comment!
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good work
Thanks!
For watching and for your comment!
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Probabli
great as always thanks lot
Thanks!
For watching and for your comment!
THANKS 👍👍👍👍
😊
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can you tell me please where can i order a maxisys autel as you look for alibaba and aliexpress but I did not find similar
Hi
Autel website...
Or try eBay... there is some sellers in there...
Thank you for watching!
Thanks and as many videos I follow all 👍
Hello there please help...
I've watched your videos and they give good advice. Some have thought I've had magic powers as I head direct to the issue, usually I watched one of your videos based on their problem.
Any how, as I can't contact you (where is the website)...
I have a bipper, there is no can between the BSI and ECU.
Now the wires should be twisted right? I can see this on the ECU clip2 but the one has odd wires which do no coalate.
Auto data was not helpful with a pin out and of course parts are by code, so takes a little working out....
Basically the bipper won't start as the ECU is not present and the ECU sends the wrong immobiliser code (not recognised) so there is obviously a problem on the can.
If you send more details I can try to look at which wires to check for can...
Thank you for watching and for your comment!
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@@LMAutoRepairs 2012 1.3 cdti bipper
Bsi reports no ECU in bus.
ECU reports incorrect code from bsi.
Bsi says code from key correct.
@@guywhoknows
Need more than that... engine code?
FHZ or 8HS
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@@LMAutoRepairs fhz engine.
Same wiring as the fiat and Nemo.
(Not same as Corsa)
All fuses have been checked, even suspected the bsi causing the issue so replaced it all with a ECU kit. Same issue.
Immobilizer goes off on the cluster, engine turns over and will run on easy start, fuel is at the injectors, but I've not removed then to see if they're actually working, being as the CEU is unlocked.
Had a d773 code. Then on replacement a u0426. U1700
P086a
Also a odd non documented 90aah/37034. Which is from the bsi.
@@guywhoknows
BSI- Can H 60 pin plug pin 44
BSI- Can L 60 pin plug pin 45
Goes to:
(If ESP fitted:
Steering angle sensor
IN- Can H 6 pin plug pin 3
IN- Can L 6 pin plug pin 1
OUT- Can H 6 pin plug pin 4
OUT- Can L 6 pin plug pin 2
Goes to:
Rotation rate sensor
IN- Can H 6 pin plug pin 4
IN- Can L 6 pin plug pin 2
OUT- Can H 6 pin plug pin 5
OUT- Can L 6 pin plug pin 3)
Goes to:
ABS/ESP
IN- Can H 38 pin plug pin 26
IN- Can L 38 pin plug pin 14
OUT- Can H 38 pin plug pin 27
OUT- Can L 38 pin plug pin 15
Goes to:
ECM Engine ECU
Can H 94 pin plug pin 69
Can L 94 pin plug pin 70
Engine ECU is a terminal module.
Hope that helps.
Hi
I have the same engine Z13DTJ and I can't fix black smoke issue on acceleration I've checked everything single things can't find what's wrong no vaccum Leaks or any faults code, replaced maf too ...
One thing I've noticed boost pressure command doesn't match with actual boost it's always behind 10-15 points.
What can I do next?
Sorry for long message
Thanks
Hi
Black smoke is usually caused by un-burnt fuel... often caused by air leak...
Throughly check for any split air pipes etc... specially after the turbo... somethings the leak is only visible under pressure... ence the smoke only under acceleration...
You you can, do a smoke test... that should reveal any leaks...
Hope that helps.
Thank you for watching and for your comment!
@@LMAutoRepairs thanks for the reply
I did smoke test forgot to mention it but there were no leaks at all , also on idle when revving hard I can see smoke ..
@@temurxox5634
Ok...
My next step would be to remove the intake manifold... ensure is not clogged with gunk... which is kinda normal after the egr... that can restrict the air flow...
While in there, clean the egr etc...
If that is ok, then perhaps the injectors...
I can't help much more without looking at the problem... if that makes sense...
Essentially, the main two possibilities are, either there is not enough air reaching the pistons, or there is too much fuel being injected...
Either because the system is made to think it needs to inject more, or faulty injectors leaking into the cylinders...
Hope it makes sense...😛
@@LMAutoRepairs thanks
You know if I can find the problem with a scanner looking at some data maybe ?
Thanks
@@temurxox5634
Possibly...
But is is mechanical, there is a chance that live data will no show anything relevant...
Почему не показал как паял?
ماذا عن قيم الحساسات بعد اصلاح العطل ؟
Yes... someone else already mentioned that... I should have showed... sorry...
I was happy enough that the problem was fixed... never thought about that...
Thank you for watching and for your comment!
What system do you to read the Immobilizer pin code to reprogram car keys
Hi
On this Corsa D I do it with the MaxiSys...
Thank you for watching and for your comment!
Can u give me a link for it please
@@nickycarver553
www.autel.uk/diagnostics/maxisys/maxisys-ms908-pro/
Super 👌
Thanks!
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Hi mate. Where are is your location
Why u transfer eprom?
Because otherwise the car would not start...
Thank you for watching and for your comment!
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Thanks!
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Every car in your video run on a low fuel 😀.
Indeed... lol
Thank you for watching!
@@LMAutoRepairs I like your videos and due to Corona Virus and situation in my country i am watching the whole day.👍
@@milanpetrovic3939
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Hole the situation improves...🤞
5:15 I can show you evidence of an Vauxhall (Opel) which follows APP sensor 2 voltage ripple and rpm ripples in the same way. APP1 used for counter check only. I don't agree with your statement for accuracy, you're not the designer, you can't know.
Are you the designer?
How can you tell then, that APP is used for counter check only?
The car goes in limp mode regardless of with one fails... so I would say needs both readings to correctly calculate and ensure accuracy of the pedal position...
I am not say you are not correct, and I said, I believe and makes some sense that this is how it works...
But have a look at this, might help to complement my explanation...
ua-cam.com/video/GBRJdzrGUA4/v-deo.html
LM Auto Repairs You will never know! 🙂 Let me say that sensors cross checking is another function in ecu, then how a control loop works. And fall back strategy is yet another function. But yeah, you right, different makers different strategies.
@@liviu2004
Next time I load tis I will check if there is any function explanation in there... you let me curious now...🤔
What's that silver tank for
Silver tank?🤔
Where in the video?
@@LMAutoRepairs the thing above the steering wheel below it
@@neilmurphy845
I believe you are referring to the electric motor for the electric power steering...
@@LMAutoRepairs ya that's it
Do you have ecu 55568382 ky
Or can you repair
Have you opened the ecu?
Don't have any ECUs... I have, but pretty much all are for spares...
Thank you for watching!
Hi thanks for your reply yes I’ve opened the ecu I found a burned transistor next to orange cap right side so I replaced it but fault still remains any help is greatly appreciated thanks
@@gazjacko643
Just carry one measuring the board, and testing components...
What is the fault with the car?
Non starter?
i can not understand explication...your english about technique is worst...lucky for me i am being a latin speaker and translating by myself.
Is a good job from you but only for those who not doing usual.
Maybe only for the followers and i decided to not following your channel any more.
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Not really sure if I totally understand your comment...
But thank you for watching and for the time you have followed the channel...
Perhaps all this is too technical for you...
As a native English speaking I can assure you that what you said is complete sh*te. You don't make any sense. Maybe you should stick to colouring books and playing with Lego.
I really don't understand comments like this, besides Luis English is perfect and you can understand everything, now the kind of fixes that he goes through is absolutely amazing and most mechanics wouldn't be able to find in my opinion and if you been here for a while you probably think the same.... We are free to sub or unsub at any time and do whatever i just wish people were a little bit more kind and respectful to someone that been taking the time to create videos and it's helping lots of people ...
@@CarsExposedI agree This work is very complex and anyone who has done enough of it would never criticise Luis his approach is to repair rather than renew which is difficult to start with would be better if comments made were positive and constructive these videos are very informative and I find them very helpful there is no place here for insults
New second had ecu kit am having tje following codes no gas acceleration pedal at all rpm 1200 car starts drives ok with 1200 rpm no gas at all good morning my8 live data are as about
Ignition status 12v
Battery voltage 12v
Main relay active
Spill valve relay inactive
Acceleration position sensor signal 5.08
App sensor 1 (acceleration pedal position) 1.14V
App sensor 2 (acceleration pedal position) 1.35
App at idle position acceleration pedal position) inactive