OPEL ISUZU 8971891360 (16267710 / 1.7L EDU) REPAIR SOLUTION

[drivergabriel]

ISUZU 8971891360 (16267710 / 1.7L EDU) repair solution with pinnout, pictures and explinations!
If somebody need it!

[PremierD]

ISUZU 8971891360 (16267710 / 1.7L EDU) repair solution with pinnout, pictures and explinations!
If somebody need it!

Well mate ... Post it and you will find out .... (but for fcuk sake don't put PM me for password ) remember the sh1t that caused the last time .......:thrasher:

[Meat-Head]

Well mate ... Post it and you will find out .... (but for fcuk sake don't put PM me for password ) remember the sh1t that caused the last time .......:thrasher:
so who's going to say "i have i have" first?
then not link any password?

[drivergabriel]

my friend's..., i am a forum suporter... i don't wanna publicity... i just want to help and exchange experience! i will put the solution without pass, but please don't forgot about ,,newbie''....
Look at vp44 thread... nobody thank's me....but alot of people knows haw to repair vp44... including alot of people from bucharest... they tell me on the phone: ,,wtf bro! the solution is free on digital kaos.... you must register.....''!

[melcool]

my friend's..., i am a forum suporter... i don't wanna publicity... i just want to help and exchange experience! i will put the solution without pass, but please don't forgot about ,,newbie''....
Look at vp44 thread... nobody thank's me....but alot of people knows haw to repair vp44... including alot of people from bucharest... they tell me on the phone: ,,wtf bro! the solution is free on digital kaos.... you must register.....''!

Friends from D-K forum and "people from bucharest" take here
check the capacitors
check the transistor
redo solderings (90% of fault)
"If your Astra 1.7 Diesel with an Isuzu engine has problems starting, stalling, or just does not run, The usual problem is the Diesel I ECU becoming faulty.Symptoms are complete non start or a spurious fault code blaming the spill valve.
We can now repair this problem and get car up and running again."
So

[aktiv22]

take this
Y17DT / Y17DTL Pumpen - Steuerger?t Reparatur (NEU) (http://www.mrserv.de/index.php?option=com_content&task=view&id=30&Itemid=33)

[melcool]

take this
Y17DT / Y17DTL Pumpen - Steuerger?t Reparatur (NEU) (http://www.mrserv.de/index.php?option=com_content&task=view&id=30&Itemid=33)

This is what I was talking about aktiv22 "we" finally did it! :))))
So no more "OPEL ISUZU 8971891360 (16267710 / 1.7L EDU) REPAIR SOLUTION" secrets!!!! lol

[answers]

yeah ... i'm so happy that you finnaly "sabotaged" drivergabriel's work ..... he "really works" so much to find all these great solutions that he's transforming in " SECRETS" ... and nobody thanks him ... come on guys .. please DO thank him .. all the people in romania and specially bucharest .. please give him a phone call and tell him that you are not registered in digital-kaos :))
let's get serious ... make a secret from WHAT YOU DISCOVER !! i'll gladly exchange with you ... i have 100% tested articles like " how to power up a led " ,,, how not to get electrocuted while you shave and think about cars " and so on ..
so ... drivergabriel ... if you are a sport and want to help members just post your ideeas ... stop this " i got candy .. but i don't show it to you .. ! "

[drivergabriel]

my dear friend gabriel (oops! your name it's exactly like mine) wtf are youdoing here?!?!? you already know all about car electronic! you are a guru! (you also suspend my acount on carforum.tehas.....)
I HAVE NO PROBLEMS WITH THE REAL MEMBER OF THIS FORUM AND ALSO WITH YOU! i speak about that kind of people ho search on google, find this site, register and after that they have full acces of any information.

I LEARN ALOT OF ,,TIPS'' FROM ANSWERS AND LUCIANICA (especialy lucianica) but : GUYS! YOU HAVE A BIG PROBLEM! WHEN YOU SEE SOMEONE INTRESTEED OF AUTOMOTIVE YOU LIKE IT (and you try to sell your tool,,bmw scaner+kkl...no comment)(i refer to gabi s.) BUT WHEN THIS PERSON IS SMARTLY YOU DON'T LIKE IT! I am wrong?!?
I hear: ,,you already know too much... from today we are not frinds! by!'' (i refer to someonelse).
Anyway if you want war i will give you war. if you want frindship... i am sorry, but you have this occasion! so....

The overall condition of the EDU can be checked very easily and without the need to open the EDU. Pin 4 should be connected to a 12V supply and pin 17 to ground. It's best to avoid using a current-limiting supply; otherwise the EDU may not power up properly. The standby current drawn by the EDU should be about 180mA. If the current is much higher or lower than this, the EDU will need to be opened for inspection to be carried out. If the EDU is working properly, it should be possible to hear a slight buzzing sound, but beware of the high voltages (130V or more) that appear across the two pins connected to the spill valve.

If the EDU is not working properly, open it and inspect the PCB. If necessary, re-solder the three legs of the large capacitor and the four legs of the large inductor. Re-solder any other joints that look bad. Power up the EDU again by connecting pin 4 to a 12V supply and pin 17 to ground. Check for the presence of correct voltages at the four points marked 'A', 'B', 'C' and 'D' in the photos. If the voltages are not as expected, remove the PCB from its housing so that the components mounted on the other side of the PCB can be inspected and tested.

The attached photos show a faulty Isuzu EDU I repaired a few months ago. Previous attempts had been made to repair the PCB, but nobody had bothered to look underneath. A few simple checks revealed that there were severe problems with the EDU. For example, the output from one of the regulators was only 1V instead of 8.6V, which prevented the step-up converter from working properly. It's output was less than 0.1V instead of 130V or more. There was also excessive ripple on the supply lines. I suspected that at least one capacitor was faulty, but I had to remove the PCB to find out what was wrong.

The 8.6V regulator had to be replaced because of an internal short. I used a 7809 as a substitute for the original part. As expected, one tantalum capacitor was faulty. It was replaced with a capacitor marked '106-35k'. The 'SD' n-channel FET had to be replaced because it had a short between two of its terminals. Once the faulty parts had been replaced, the EDU sprung back into life.

and by the way??? why did you don't posted first, if you already know???

PS: I START THE ML!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

[lucianica]

1. @ drivergabriel,thanks for the compliments
2. Discussion is about repairing of opel ecus
3. Off topic,a little explantation about drivergabriel

exmample 1
New softwares [Archive] - GSM-Forum (http://forum.gsmhosting.com/vbb/archive/index.php/t-802780.html)
crash data for logan temic please... - GSM-Forum (http://forum.gsmhosting.com/vbb/showthread.php?t=820591&highlight=logan)

crash data for logan temic please...
please help me with this: clear crash data for logan temic 95160

after that
http://translate.google.ro/translate?js=y&prev=_t&hl=ro&ie=UTF-8&layout=1&eotf=1&u=http%3A%2F%2Fwww.okazii.ro%2Fcatalog%3Fview_list %3D1%26user_list%3Ddrivergabriel&sl=ro&tl=en

http://translate.google.ro/translate?hl=ro&sl=ro&tl=en&u=http%3A%2F%2Fwww.okazii.ro%2Fcatalog%3Fview_list %3D1%26user_list%3Ddrivergabriel&anno=2

with one observation,because google translate price is unreal
for 200 usd,corect tranaslate is 200 ron= 65 USD

example 2
http://translate.google.ro/translate?js=y&prev=_t&hl=ro&ie=UTF-8&layout=1&eotf=1&u=http%3A%2F%2Fpiese-auto.anunturi-auto.4tuning.ro%2Fanunturi-auto%2Fpiese-auto%2Frepar-calculatoare-pompa-injectie-9297745.html&sl=ro&tl=en

http://translate.google.ro/translate?hl=ro&sl=ro&tl=en&u=http%3A%2F%2Fwww.okazii.ro%2Fcatalog%2F37045838% 2FREPARATII-POMPE-INJECTIE-BOSCH-VP30-VP44.html

example 3
http://www.digital-kaos.co.uk/forums/f115/touareg-2007-a-83529/ post nr. 2,5 and 6

............................... and examples are to continue

Congratulations,you are first high-tech engineer who post this kind of subject on public auctions online sites.
keep this direction,you are on the right way.

PS 1: the romanian police still try to find "disappeared" guttman megamacs 50 from your last known job
Can you help the police ???

PS 2: sorry for off topic,is the first and the last time

[drivergabriel]

....I think you don't have another job to do...
1: crash data for logan temic, i clear with ddt on the car, without dismonting the ecu
2: crash data for logan bosch i clear on the car with an older version of clip
3: +400261710588 autonet group, you can call them and ask hem about my gutmann, is buy et by me, with cash, i also have full acces on new hotline tehnical service.
4: yes i have auction on public sites and so what? is beacouse i have more customer then you or what?!?

Advice: TAKE CARE! PLEASE TAKE CARE! THIS IS THE LAST TIME WHEN I TELL YOU!

[melcool]

No offense drivergabriel...but...WE... already know what kind of man you are from this post http://www.digital-kaos.co.uk/forums/f115/touareg-2007-a-83529/
lucianica has clarified everything!!!
And stop with these public threats because YOU are NOT on the right way believe me!

[lucianica]

here is few pictures of this kind of ecus

PS: oooo,my good,drivergabriel you are crazy ?
http://www.digital-kaos.co.uk/forums/f115/how-programme-mercedes-new-ml-w164-keys-92623/ post nr.14
With your tool you want to make bussines ?
Again,keep this direction,is the best way for you
At the last,i wish you all the money an coustomers worlwide
Cheers

[drivergabriel]

i know this guy (some kind of friend) and it was a joke, me and my friend's play ..paintball, and sometimes 10 people shoot in one man.... it's funny...

[obdmaster]

take it you two dont like each other:questionmark:


Makes interesting reading though:laugh:

[drivergabriel]

take it you two dont like each other:questionmark:


Makes interesting reading though:laugh:


is beacouse wheather.... but be onest: it's funny, don't?:fight:

[PremierD]

is beacouse wheather.... but be onest: it's funny, don't?:fight:

Ok mate ...this thread is my first " suggestion " as a Moderator ...
Calm down, And that goes for ALL parties involved ...or the topic will be closed ...

[drivergabriel]

you have wright! please delete all ,,fight'' posts! ok? with that posts we look like a stupid kids! (my wife sayd that :))))

[zoko]

good job guys

[emin06]

its explained details of edu,for check on the benchmark.
(c) emin & muhittin :deal:

[sadena]

ISUZU 8971891360 (16267710 / 1.7L EDU) repair solution with pinnout, pictures and explinations!
If somebody need it!
have problems with this sparepart of my car. like to know how to fix it. is there somewhere a draw of the print so you can fix it by yourself?

[f_alecs]

Hello. I have a problem with the injection control unit. After restoring cold soldering, short circuit existed below the PCB. I changed 2 BUZZ91 and 1 BYV32-200, but still not working. Somebody help me?

[opel astra]

thank u very much:manusign:

[wsm]

HI Guys

Thanx for the info. I'm going to try my best to fix my Opel this weekend.

[Tagmania]

thanks for the upload

[unclestoo]

Just what I was needing! Cheers

[wingouz]

Friends from D-K forum and "people from bucharest" take here(extracted from Cartool1.6)
check the capacitors
check the transistor
redo solderings (90% of fault)
"If your Astra 1.7 Diesel with an Isuzu engine has problems starting, stalling, or just does not run, The usual problem is the Diesel I ECU becoming faulty.Symptoms are complete non start or a spurious fault code blaming the spill valve.
We can now repair this problem and get car up and running again."
So

is this an repair instruction please?

[MARTYNP21]

got a vauxhall astra 1.7 dti 16v y17dt engine 2001 will not idle correctly plug into laptop produced the error code p1651 which points to the injection pump edu but im not convinced i think maybe idle control sensor on the pump just wondering if any1 has had any similiar problems atall? all it does it surges in idle and produces smoke and a really strong smell of diesel help plz!!!

[sidescan]

Folks

Don't know if anyone can help, managed to lift the thru solder from the pin in the photo and unsure where it should now connect to.

Anyone got one on the bench they can meter out for me??

Also - anyone replaced the 1500uf 35v electrolytic with an alternative??? - This one has sheared two of the three pins off.

thanks

Dave

[vasdi]

I have the same problem. The Opel Astra with Isuzu engine and ISUZU 8971891360 (16267710 / 1.7L EDU didn't want to start.I want a scheme of the pinout of the transistors of the edu and if possible a signature of the trnsistors. Thanks in advance.If somebody wants let replay on my private e-mail: vasdi@abv.bg
'

[giedri]

thank u very much

[tordu]

Thank you very much, this post is very usefull for this bull shit of EDU.

[hamza338]

hi all,

i want to know how to check this type of transistor bss 138N.

[melcool]

hi all,

i want to know how to check this type of transistor bss 138N.


check to not have "all legs in short" compare to other that is on the same plate very close!

[zeko99]

This is what I was talking about aktiv22 "we" finally did it! :))))
So no more "OPEL ISUZU 8971891360 (16267710 / 1.7L EDU) REPAIR SOLUTION" secrets!!!! lol

The link is not working.

[DiegoON]

Hi, I have the same problem with my Astra 1.7DTI, I will test my ECU... maybe I?ve lucky...
I was driving and just when I was to take the highway out... the engine stopped and never start again!
anyway, very funny the gabriels? fight!
;-)

[tektronix]

hi all,

i want to know how to check this type of transistor bss 138N.

The best way is to replace it without checking.I've had a situation once it looked nice on checking but it was cause of all problems (Car worked fine then after few minutes started to have like misfire when you have water in petrol).I've replaced it and everything is still fine

[boogie2]

i really got a lot from this post

[boogie2]

i really got a lot from this post thanks

[peppery]

anyone now what are type of drivers on picture

[BALI7605]

Hi Peppery,

As per your photo left to rigth

BUZ 91; Buz 91; BYV32-200; Buz91; BYV32-200; 7809

good luck

[pirilla]

Hi Peppery,

As per your photo left to rigth

BUZ 91; Buz 91; BYV32-200; Buz91; BYV32-200; 7809

good luck

In photo are there 7 components, and you listed only 6.

?Can someone list confirmed references?

[cristi_bv]

BUZ 91; Buz 91; BYV32-200; Buz91; BYV32-200;BUZ 91; 7809

[zeko99]

What to use instead of the gel between the large capacitors and transistors?

[gregk]

What to use instead of the gel between the large capacitors and transistors?

Hi.
Have a look at this thread it will tell you how to repair engine ecu and what gell to use.
http://www.digital-kaos.co.uk/forums/f175/anyone-interested-have-instructions-simtec-hybrid-ecu-repair-168191/ (http://www.digital-kaos.co.uk/forums/f175/anyone-interested-have-instructions-simtec-hybrid-ecu-repair-168191/)

[zeko99]

I'm thinking to put the silicone that holds up to 350C ..

Just to connect a condenser coil and the relay because I changed the transistors and voltage regulator, had to cut the gel.

[gregk]

Ahh it's to support components in that case you need potting silicone.

[hamza338]

my dear friend gabriel (oops! your name it's exactly like mine) wtf are youdoing here?!?!? you already know all about car electronic! you are a guru! (you also suspend my acount on carforum.tehas.....)
I HAVE NO PROBLEMS WITH THE REAL MEMBER OF THIS FORUM AND ALSO WITH YOU! i speak about that kind of people ho search on google, find this site, register and after that they have full acces of any information.

I LEARN ALOT OF ,,TIPS'' FROM ANSWERS AND LUCIANICA (especialy lucianica) but : GUYS! YOU HAVE A BIG PROBLEM! WHEN YOU SEE SOMEONE INTRESTEED OF AUTOMOTIVE YOU LIKE IT (and you try to sell your tool,,bmw scaner+kkl...no comment)(i refer to gabi s.) BUT WHEN THIS PERSON IS SMARTLY YOU DON'T LIKE IT! I am wrong?!?
I hear: ,,you already know too much... from today we are not frinds! by!'' (i refer to someonelse).
Anyway if you want war i will give you war. if you want frindship... i am sorry, but you have this occasion! so....

The overall condition of the EDU can be checked very easily and without the need to open the EDU. Pin 4 should be connected to a 12V supply and pin 17 to ground. It's best to avoid using a current-limiting supply; otherwise the EDU may not power up properly. The standby current drawn by the EDU should be about 180mA. If the current is much higher or lower than this, the EDU will need to be opened for inspection to be carried out. If the EDU is working properly, it should be possible to hear a slight buzzing sound, but beware of the high voltages (130V or more) that appear across the two pins connected to the spill valve.

If the EDU is not working properly, open it and inspect the PCB. If necessary, re-solder the three legs of the large capacitor and the four legs of the large inductor. Re-solder any other joints that look bad. Power up the EDU again by connecting pin 4 to a 12V supply and pin 17 to ground. Check for the presence of correct voltages at the four points marked 'A', 'B', 'C' and 'D' in the photos. If the voltages are not as expected, remove the PCB from its housing so that the components mounted on the other side of the PCB can be inspected and tested.

The attached photos show a faulty Isuzu EDU I repaired a few months ago. Previous attempts had been made to repair the PCB, but nobody had bothered to look underneath. A few simple checks revealed that there were severe problems with the EDU. For example, the output from one of the regulators was only 1V instead of 8.6V, which prevented the step-up converter from working properly. It's output was less than 0.1V instead of 130V or more. There was also excessive ripple on the supply lines. I suspected that at least one capacitor was faulty, but I had to remove the PCB to find out what was wrong.

The 8.6V regulator had to be replaced because of an internal short. I used a 7809 as a substitute for the original part. As expected, one tantalum capacitor was faulty. It was replaced with a capacitor marked '106-35k'. The 'SD' n-channel FET had to be replaced because it had a short between two of its terminals. Once the faulty parts had been replaced, the EDU sprung back into life.

and by the way??? why did you don't posted first, if you already know???

PS: I START THE ML!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!


HI meat can you please reupload your pic

thanks in advance

[Shmortz]

Does anyone know the type of the chips marked on the image?
I have a problem with 2 of these chips in short.

[elchip]

Does anyone know the type of the chips marked on the image?
I have a problem with 2 of these chips in short.

Logic TTL I cant remember ...

[Shmortz]

I'll be very grateful if you could tell me what exactly is this IC...

[elchip]

I'll be very grateful if you could tell me what exactly is this IC...

Have a nice work ;-)

Regard's

[bulanbulanov]

Does anyone know exactly what components are in the yellow rectangle in the attached picture, as I understand those in the upper right are TTL but it have strange markings.

[Shmortz]

I asked the same question a few posts above then naturally received false answers from elchip, surely know that these are three different chips and certainly not 7408 or 7414. I think the answer lies both in the first and the last line of the mark, for all modules are respectively the first 014 for each one, and 3382, 3384, 3385 for the third line of different chips

[autoelectrics]

Hi,

Does anyone knows what components are in the blue rectangle?

Any help would be very appreciated,

Thanks

[florin_leo]

They are marked: 2903.Probabil are transistors.FETs I think.

[autoelectrics]

Hi,

Thanks for that but I need a bit more info as I need to get some replacements.

Does anyone maybe know a replacement part number?

thank you very much.

[racin-snake]

LM2903 datasheet pdf datenblatt - STMicroelectronics - LOW POWER DUAL VOLTAGE COMPARATORS ::: ALLDATASHEET ::: (http://www.alldatasheet.com/datasheet-pdf/pdf/22767/STMICROELECTRONICS/LM2903.html)

you can also google the number for an alternative type to use

[autoelectrics]

Hi racin-snake,

Thanks for your help.

I had a look at that but this components (3 pins) doesn't seems to be a comparator, it looks more like a sort of on/off transistor, anyway I've tried finding a lm2903 with the same package as the one in the board but I haven't been able to, thus have you replaced one of these before?

Once again thank you very much for the help, it is much appreciated,

Thanks

[einet]

Hi,
I repair more that 20 ECU from this, the only problem what I found is bad soldering on pins from FET?s and coil pins.
But the most problem what I see is thermal problems on the FET?s! There is a factory fault! The thermal contact from the FET?s is bad! The best is to put it out and put thermal past and give more forces to the screws that hold the FET?s or put something between the FET and the screw to produces better contact..

[autoelectrics]

Hi,

Yes, this is not an usual problem, but this is the second EDU I have found with these two components shorted so I was hoping to find some alternative components so I can get them fixed.

If anybody knows, please let me know.

thanks
Daniel

[gerii]

The overall condition of the EDU can be checked very easily and without the need to open the EDU. Pin 4 should be connected to a 12V supply and pin 17 to ground. It's best to avoid using a current-limiting supply; otherwise the EDU may not power up properly. The standby current drawn by the EDU should be about 180mA. If the current is much higher or lower than this, the EDU will need to be opened for inspection to be carried out. If the EDU is working properly, it should be possible to hear a slight buzzing sound, but beware of the high voltages (130V or more) that appear across the two pins connected to the spill valve.

If the EDU is not working properly, open it and inspect the PCB. If necessary, re-solder the three legs of the large capacitor and the four legs of the large inductor. Re-solder any other joints that look bad. Power up the EDU again by connecting pin 4 to a 12V supply and pin 17 to ground. Check for the presence of correct voltages at the four points marked 'A', 'B', 'C' and 'D' in the photos. If the voltages are not as expected, remove the PCB from its housing so that the components mounted on the other side of the PCB can be inspected and tested.

The attached photos show a faulty Isuzu EDU I repaired a few months ago. Previous attempts had been made to repair the PCB, but nobody had bothered to look underneath. A few simple checks revealed that there were severe problems with the EDU. For example, the output from one of the regulators was only 1V instead of 8.6V, which prevented the step-up converter from working properly. It's output was less than 0.1V instead of 130V or more. There was also excessive ripple on the supply lines. I suspected that at least one capacitor was faulty, but I had to remove the PCB to find out what was wrong.

The 8.6V regulator had to be replaced because of an internal short. I used a 7809 as a substitute for the original part. As expected, one tantalum capacitor was faulty. It was replaced with a capacitor marked '106-35k'. The 'SD' n-channel FET had to be replaced because it had a short between two of its terminals. Once the faulty parts had been replaced, the EDU sprung back into life.

[gerii]

danke.....

[lati]

Hi,

Does anyone knows what components are in the blue rectangle?

Any help would be very appreciated,

Thanks
Hello
anybody a Solution for this problem
I have also one defect Transistor r292903 but i cant find a replacemend
Best regards

[andreaaa72]

Hello
anybody a Solution for this problem
I have also one defect Transistor r292903 but i cant find a replacemend
Best regards

Is IRFL210

[maglaras]

i have problem in this ecu
i make the repair and car start again
but after 4 minete stop again
the fould code is p0251
what i dont make good in the repair
thank you for the help

[maglaras]

nothing????????????????????????????

[maglaras]

any help for me problem???????????????

[autoelectrics]

Hi,

Maybe it is not the EDU, have you tried another EDU?

Thanks

[maglaras]

i tray another ecu and all work ok

[autoelectrics]

Ah OK, so what have you repaired on the faulty ECU, did you only resoldered it or have you changed the regulator and caps too?

Thanks.

[maglaras]

i have fould code p0251
i make the repair in the ecu and after 5 minits the car stop

[autoelectrics]

OK, but when you say, "I have done the repair", what repair do you mean? just re-soldering it?

If that's what you mean you may need more than that, probably replace the regulators and capacitors in the inside board.

Thanks

[maglaras]

ichains capitols and transistor smd

[autoelectrics]

Ah OK in that case I don't really know, you would have to work around what stopps functioning once it is not working but that may be quite hard as probably when it cools down it will work back again, sorry I can't be of any other help.

Thanks.

[uferi]

Dear forum members,
I want talk about these 3 chips on the board. I spent a lot of time to draw back the schematic circuit of this part of circuit (because I had problem with this part of circuit: the 5 Volt power supply for this circuit section was only ~3V, I measured the current consumption of this circuit on a good circuit and after that on the bad, some of the chips was bad). So, I think the circuit is a shift register (similar with the CD4014), BUT, the CD4014 is a 8 bit shift register with parallel load facility in 16 pin format, our chip have only 14 pins... The core of the chips is possible to have only 7 bits (reduced core), or possible the core with 8 bit shift register but reduced pin count (less output number for example).
I think, the sift registers is necessary for a "state machine" circuit, in function of the inputs and outputs, the state machine sets the next outputs.
Best regards,
Feri

[andreaaa72]

Hi
I need help for the components that I have selected in red area. Do you have any info? On some parts I can read sAK 23 and on some parts I can read sAK 24. Have you any info, please?
Thanks a lot

[andreaaa72]

Anyone can help me?

[multiplex1976]

Anyone can help me?

TRANSISTOR NPN BCX70J

[ollync]

In the picture in the lower right corner i have marked with a yellow dot a transistor. Does anybody know what type of transistor it is? On mine i can't read anything.

[nelutzul40]

Very good post, thanks! I had this problem, but we solved it...

[mexanico1971]

Hi !
I have a astra G Y17DT that"s when hot stop"s !
I resold the solder"s joint"s and still give me dtc p0251 from spill valve !
if I erase the dtc the car start"s but dies few seconds later !
anyone have a situation like this ?!

BR

[alldecode]

Look picture:

red line is short conect with wire if you not good +12 on coil or contact is burned then put wire.

other picture is shema, if I have problem I write shematic part then part.

[aitistu]

Hi, and thanks all for this great forum

this one got water in
watch the pictures...
made it start 170mAmps consumption, 168.5 volt on inverter,
car doesnt start...
any sugestion apreciated


EDIT ! :
Found it, was my fault, shorted by mistake spill valve to ground
good thing is the ecu has protection
works like new

thanks,
cristi

[marusca]

Replace ecu...

[javierfichera]

Dear Friends, any idea for this chip 014.
Thanks
J

[aitistu]

Dear Friends, any idea for this chip 014.
Thanks
J
same problem here
chip 3385 and 3382 are in short and I dont know what they are

any info apreciated

regards
cristi

maybe this (http://www.datasheetcatalog.org/datasheet2/2/04hyfk2r9u1x3ajgtd9wqaxqpzky.pdf) or this (http://www.ti.com/product/sn74hc14?CMP=AFC-conv_SF_SEP)

[javierfichera]

3385, 3382 and the other is the same, I believe that I will test the circuit with LM339 or LM324 TSSOP, and will report in the next few days.............
J

[aitistu]

3385, 3382 and the other is the same, I believe that I will test the circuit with LM339 or LM324 TSSOP, and will report in the next few days.............
J

lm324 in 14 pin capsule has + on pin 4 and gnd on pin 11
lm339 in 14 pin capsule has + on pin 3 and gnd on pin 12
datasheet search on google

circuits 3385 3384 and 3382 have + on pin 14 and gnd on pin 7(like most logic, ttl, cmos, whatever )

in have two boards with 3385, 3382 and 3385 , 3384 in
short circuit (about 12 ohm )

i have 3384 and 3382 in working condition (i hope so) but not
enough experience to find out what they are...
i've searched the net for 014 xxxx 338x but no results

thanks
regards
cristi

[ticc]

muy bueno ...pero no siempre falla la soldadura ??

[Shmortz]

lm324 in 14 pin capsule has + on pin 4 and gnd on pin 11
lm339 in 14 pin capsule has + on pin 3 and gnd on pin 12
datasheet search on google

circuits 3385 3384 and 3382 have + on pin 14 and gnd on pin 7(like most logic, ttl, cmos, whatever )

I'm also doing a lot of trying to understand what these chips. I do know that all three are different and the most important is the numbers 3382, 3384 and 3385 ...
in have two boards with 3385, 3382 and 3385 , 3384 in
short circuit (about 12 ohm )

i have 3384 and 3382 in working condition (i hope so) but not
enough experience to find out what they are...
i've searched the net for 014 xxxx 338x but no results

thanks
regards
cristi


I'm also doing a lot of trying to understand what these chips are. I do know that all three are different and the most important are the numbers 3382, 3384 and 3385 ...

[metercar]

Hi friends , i need info or hd image of this component marked on attachment, intent of save money of costumer...

[aitistu]

Hi friends , i need info or hd image of this component marked on attachment, intent of save money of costumer...

hi,
its sB1 i think schottky diode 100 volt 1 amp or something
if that is burned maybe you should desolder and open maybe other components are damaged
look in the picture and then here Marking of electronic components, SMD Codes SB, SB*, SBPB, SBRB, SBSB, SBTB. Datasheets BAT54T1G, KDZ9.1B, KTC4377, LM3671MF-1.2, LM3671MF-1.5, LM3671MF-1.8, LM3671MF-ADJ. (http://www.s-manuals.com/smd/sb)
221660

[metercar]

Thanks friend, replaced component and car dont start. clear the fault code (p0251) and reappears

[Meat-Head]

Thanks friend, replaced component and car dont start. clear the fault code (p0251) and reappears

well tell the punter it's f**ked, he needs a new one

[metercar]

Yes Mr. Meat it's a "Russian roulette"

[aitistu]

hi
did You try to desolder and remove the board? maybe there are other burned components
look at this forum for info and pictures

regards
cristi

[metercar]

board checked and tested on table @169volt of switching power

[metercar]

Physically a hole unsoldered as fault on first looking and one component destroyed with screwdriver on opening of customer...are replaced the component and soldering the hole... test on table ok the voltage... can but car not start. Fault p0251 is present. i'm sure it's funcional the edu

[Mr BLACK]

it is possibile when you extract pcb from case to damage some components or circuits ...solder all components with air heater and flux

[Shmortz]

often there is a problem with the soldering of the two resistors 200 ohm in series, try to resolder them again and see what happens

[danihaos]

often there is a problem with the soldering of the two resistors 200 ohm in series, try to resolder them again and see what happEDens
I have same problems with this type of EDU, tantalum capacitor was burned and 8.6v regulator broken, change them but no work.After read this thread once again I resolder the 2 resistors and EDU is working.Thank's to all for sharing from yours experiences.

[autoelectrics]

Hi,

danihaos/Shmortz, could you please let me know where these two resistors are? I have similar problem with an EDU that the regulator is changed but still wont go,

Thank you.

[mislav88]

I have a problem with -12V points. Is there voltage inverter inside this EDU, or -12V is supplied from ECU?

[metercar]

0v (-) to ground connections and +12v to pump relay commanded by ECU check on autoMata the wiring diagram

[danihaos]

This are the resistors that I resolder them and all ok. Until now car running 3 hours continuous:joyous:.

[autoelectrics]

Thank you.

[metercar]

is a nice photo

[danihaos]

:top:
is a nice photo
Yes,nice foto. You have a good camera.:top:

[aitistu]

hi,
does anyone had luck with these 3 chips? what are they?


regards
cristi

[metercar]

in this case must be ****yzed to interpret the connection operation

[pletik]

Aitistu this 3 chips are TTL 74HC14. See pdf and you will see that. :)

[metercar]

Aitistu this 3 chips are TTL 74HC14. See pdf and you will see that. :)

good job pletik

[eliberatoro]

It is wrong, not 74hc14 because you will have pin 3,4 shorted on the midle chip what is short between IN and OUT of the same inverting gate = short on vcc-gnd.

Does anybody figured out vhat this chip is ? (014)

[eliberatoro]

Can somebody confirm that ic 3382, 3384, 3385 are different or the same ? (I found boards with two 3384 on it)

[Shmortz]

the are different for shure, change places on two of them and EDU will stop working, I have made one EDU with chips from different modules but on right places and it work without any problem... so far I have no luck to find replacements for them... I think board with two 3384 will not work, I have repair many modules and always chips are the in the same order...

[autoelectrics]

Hi,

Does anyone please know any alternative part number for the green capacitor? I can't see to find where to buy a new one. Here picture of it attached, thanks.

251394

[aitistu]

hi,
this one works
251397
regards
c

[autoelectrics]

Thanks aitistu, do you have a part number for it? Thanks again.

[aitistu]

no part number , it's from a local store
google > 400V Film Capacitor with 0.0010 to 10uF Capacitance Range on Global Sources (http://www.globalsources.com/gsol/I/Film-capacitor/p/sm/1010373024.htm#1010373024)
i think it's the same

regards.
c

[autoelectrics]

Thank you.

[elvis19]

I have a ecu. I opened the ecu and i see the solders of capacitor is bad. The resoldered and when i connected in the car and i try ignition, the fuse 15A break. Can you help me?

[shtyrya2]

Hello guys! Great info, i read everythin, thanks. Have a question - the negative voltage (-12v) is external or is generated in the same EDU??? Do i need to connect -12v to try it on bench? Thanks.

[av1000]

Hello my friend .261101
Y have a ecu for Astra G 2001, isuzu edu end y do not know what tipe of transistor is that whit mark SMD :: SB1"". If someone help me whit any idee ??? Y think is NPN or PNP not MOSFET or two diode series maybe. Y can nop post the picture to see wher is mounted on the PCB board , is two or three pieces on the board. On the pins do not have any value.

[aitistu]

hi
Marking of electronic components, SMD Codes SB, SB*, SBPB, SBRB, SBSB, SBTB, sb**. Datasheets BAT54T1G, KDZ9.1B, KTC4377, LM3671MF-1.2, LM3671MF-1.5, LM3671MF-1.8, LM3671MF-ADJ, PT7M6102NLC4E, PT7M6102NLNE, PT7M6102NLTAE. (http://www.s-manuals.com/smd/sb)
on the third row BAT54T1G
regards

[av1000]

Hello
The component look like a transistor whit 3 terminal, not whit 2 terminat like a diode. At the measure y have value like 2 jonction of bipolar transistor.

[aitistu]

hi
or 2 diodes?

regards
cris

[wahooo]

Just pulled my edu out and found thishttp://img.tapatalk.com/d/14/06/12/zabesupy.jpg could someone tell me what component that is that's burnt out and where to buy one from.

Thanks in advance

Sent from my GT-N7105 using Tapatalk

[metercar]

capacitor is the same that is in good condition on the picture 10uf 35v

[av1000]

Hello my friends.
Finally does anyone know what is the real marking of the three IC from the picture, y have three dead ECU , oll the components is tested less than three.265247

[nelutzul40]

Hello my friend .261101
Y have a ecu for Astra G 2001, isuzu edu end y do not know what tipe of transistor is that whit mark SMD :: SB1"". If someone help me whit any idee ??? Y think is NPN or PNP not MOSFET or two diode series maybe. Y can nop post the picture to see wher is mounted on the PCB board , is two or three pieces on the board. On the pins do not have any value.



Look here..............maybe help!

[av1000]

Anyone do not help me whit the real name of the tree cips ???

[gabardo]

Good morning i need pictures and explanation of how to repair ecu does not work
8971891362 (16267710
Greetings and thanks ....

[av1000]

279902Hy my friends, if someone don't know what tipe of IC is fron the picture, is whrite on bouth 50610 or 60610, the 2 IC work to replace whit lm2904,lm358 , tested end is OK.

[alldecode]

In one board I see LM2901, this is same chip, last 3, mini chip use from destroyed board

[Jashmine1983]

Can somebody help me with information where the red marked pin is connected? I've searched on board but I didn't find any straight connection.
Thanks!
http://www.digital-kaos.co.uk/forums/attachment.php?attachmentid=290881&stc=1

[aitistu]

hi,
it's not connected...
regards,
cristi

[Jashmine1983]

OK.Thanks!

[av1000]

Hello my friends.
Someone try to start the ECU on air whitout the car , to have the 170V on the two wires output(spill valve supply) what tipe of signal/comunication have whit ECU engine????

[metercar]

The "EDU" is a big driver only, no diag with ECU

[mexanico1971]

Hi !
I have one situation that the car wont rev more than 3000rpm and client say is edu problem !
any tips for component damage ?
In close look to the PCB nothing seems bad !!! I have resolded and check components but no clue !
Can some one share pin"s out for connect EDU on bench ??

thank"s in advance
BR

[alldecode]

http://www.digital-kaos.co.uk/forums/attachment.php?attachmentid=323605&stc=1

OSC is oscilator, I make with NE555

LIGHT is VALVE, but if increase fq with OSC power is high and light is shine.
but if conect VALVE, fq with OSC is smaller, from 1 Hz to 1000 Hz, and valve is runing

i repair many electronics like that, and when tested on desk this metod, in car start 100%.

but I have smoe to make problem with >2000 rpm, then stop. Preheating all chip from down side

[madh]

hi there!!

I whant to replace the transistors that are placed on the housing (7 pcs with 3 pins in line) i think i have problems with them but i can't find them on the net by their numbers.
Does anyone know some kind of replacement. Are they FET's or MOSFET?!

[madh]

I have answered myself "BUZ 91; Buz 91; BYV32-200; Buz91; BYV32-200;BUZ 91; 7809"

:) sorry for the dumb question and my lazyness...

[cristion]

334544
Hello guys!. Have a question - the negative voltage (-12v) is external or is generated in the same EDU??? Do i need to connect -12v to try it on bench? Thanks.

[mexanico1971]

334544
Hello guys!. Have a question - the negative voltage (-12v) is external or is generated in the same EDU??? Do i need to connect -12v to try it on bench? Thanks.


No !
just connect 12v and ground the EDU box

[make]

if i understend well the EDU is just plug and play , noneed of some decoding or similar ?

[Johnner]

Make,you need to introduce yourself here please : Introduce Yourself (http://www.digital-kaos.co.uk/forums/forumdisplay.php/2-Introduce-Yourself)


Thank you...

[cristion]

I fed edu, all voltages 12V and 160V are good but not -12V, from what can be?

[asu2016]

Hi !
Very good post, thanks! I had this problem, but we solved it

[omglol]

I have Astra 1.7dti that cuts out occasionally. Fault codes are P0370 and P0251. What do you suggest to take a look first, the EDU on the diesel pump or ECU on the top of the engine? Thanks!

[shanny254]

WOULD ANYONE HAVE A WIRING DIAGRAM FOR THE VAUXHALL FRONTERA B 2001 MODEL..ECU DIAGRAM
PLEASE.THANKS

[PierreTheron]

I have Astra 1.7dti that cuts out occasionally. Fault codes are P0370 and P0251. What do you suggest to take a look first, the EDU on the diesel pump or ECU on the top of the engine? Thanks!

Normally never had problems with the spill valve ..

Check all connector plugs on these vehicles first for hot connections ... This will be spill valve connector and another plug close to top ecu ...

If no problem on these then check bottom EDU unit for dry joint first ...

[PierreTheron]

Hi

Here a bench test

Must draw at least 4 amps (I use spill valve these days)

[Randex]

Hello, I have the same problem -12v is missing, where is created these -12v tension in these ecu?

[carterthebest]

Hi friends,
I have the same problem with -12V (all -12V not only one in attachment), but I suspect that were marked by mistake - it should be 0V.
Could someone confirm it?

[troodon]

thanx for know how, i have blowed regulator, capacitor, bad solder joints, repaired and working like new :)

[kinyo852]

Yeah it is quite funny

[aitistu]

hi
3385 = 74hc04 3384 = 74hc02 3382 = 74hc08

[aitistu]

hi
-12v is 0v /car ground/ ecu case

[diagnosticman]

aititstu ; are you sure about these 3 ics? did you make a test with these? working? order that you describe it is ok?
thank you

[diagnosticman]

hi
3385 = 74hc04 3384 = 74hc02 3382 = 74hc08

aititstu ; are you sure about these 3 ics? did you make a test with these? working?
thank you

[aitistu]

yes, tryed working

[PierreTheron]

Can You Believe

This is good thread

Be carefull for having burnt joints and then you try to solder it ..................... .
The unit might work for a day or a week and then bite you in the ass again ... (only for a simple dry joint ....

[PierreTheron]

Hi Never had this component down yet ..

????????????????????????????//

[aitistu]

Hi Never had this component down yet ..

????????????????????????????//

hi
which component ? ic's ?

regards

[PierreTheron]

hi
which component ? ic's ?

regards


Hi
Have never found short on these ic's yet ...

How to know if they are giving problems ??? ( How to test )

I have about seven dead units i could not revive with my bit off knowledge on them ....

Bench test gets to pass on some off them but if installed on car it does not even start ... Can it be faulty 170v capacitor ????


I can upload video off last bench test i did .. but car not even wanted to start .....

[PierreTheron]

Hi
This unit tested on bench did not work on car . What have I missed ???

https://www.dropbox.com/s/3zx7k47t6rtcrn5/20160314_075247.mp4?dl=0











(https://www.dropbox.com/s/3zx7k47t6rtcrn5/20160314_075247.mp4?dl=0)

[aitistu]

hi
to test ic-s you measure with ohmeter about 600 ohm on capactor 10uf near 5v stabilizer 7805
~ 600 ohm is ok if you get something below ~30-100 ohm then you got a blown ic
i get them all desoldered and measure between pins 7 and 14 + and gnd (did not find other method....)

i had boards with those ic damaged which were blowing 2 x buz91 coil driver (edu draws about 7-8 amps for 5 seconds then blows buz91 an some printed circuit :D)

capacitor 10uf 450v should measure ~ 8-11uf low esr 0.00 to 1 ohm (various caps measured from an working unit)

if inverter works (you have 165v at capacitor) it doesnt mean the car will start , you have to check th bridge
and the connections between bridge trasistors 2xbuz91 and 2x 2903
also check 23p06v

some boards get intrerupted circuits on the inside layers of the board, so all parts seem ok the edu doesnt work; had boards which started working when bent by corners,

regards
c

[aitistu]

Hi
This unit tested on bench did not work on car . What have I missed ???

https://www.dropbox.com/s/3zx7k47t6rtcrn5/20160314_075247.mp4?dl=


nice setup! i have the same problem, dont have spiil valve tot try i use light bulb
inverter works, h-bridge works if spill valve runs thats for sure
maybe something with engine speed signal from the other ecu?

regards
c






(https://www.dropbox.com/s/3zx7k47t6rtcrn5/20160314_075247.mp4?dl=0)

[kenancatli]

Hello
marking code=sSD , sAK, sB1, S43 ?

all sot23. 3

help please!


regards

[Bllinda]

you here .... (http://www.s-manuals.com/smd)
sAK (http://www.s-manuals.com/smd/ak)

[kenancatli]

Hello
I see not sAK!
sSD? And sB1?
sB1 = B1 it is same= bas40?
sKS=bss138n?

help
please
regards

[PierreTheron]

HMMMMMMMMMMMMMMMMMM

Mabe better try something else on google or download SMD values

[aitistu]

hi
AK= BCX70K
SD = BSS138
M02 = BST82

just to be sure for sb1 and s43 could you point the location on board? pictures with an arrow ?

sB1 = bas40-04v 2 x Schottky diode
s43 = bas40-04v 2 x Schottky diode

regards

[crisgsm]

please, where it should connect this pin
it's urgent!
thank you!

[crisgsm]

if someone needs.....

[kenancatli]

hello

OPEL ISUZU 8971891360 I have repairs, car start now, 15@30 MIN Car drive after, Making noise and no power, faultcode P0216

HELP please

[mexanico1971]

Hi
as any see this situation " see pic "
Is this comun issue , because is the 2st , I got here width this "blow" capacitador ,
Replace the capacitor is enough , because I didin"t see any thing more damage ?!391383391384

[vladanr]

hi,
it is not capatitor it is resistor 0.5ohm.did you check fets because something is in short circuit

[mexanico1971]

hi,
it is not capatitor it is resistor 0.5ohm.did you check fets because something is in short circuit

Hi !
thank"s for the Tip , but I think the issue is in the board , I change the resistor 0.5ohm and capacitor near but still got short in all components arround !
Maybe is that"s Smd"s marked as " 50510-J80775 "
If some one have see same problem width the "resistor 0.5ohm melted " please share !

Thank"s in advance

Brs

[marjan76]

Hello

I hawe problem EDU opel corsa not working smd chip 014 = ? end 89951 =?
My plan396603396604

Please help

[Bllinda]

.... .... 2901
014 - 7805

[souhile]

Thank you very much, this post is very usefull for this bull shit of EDU.

[diagnosticman]

hi marjan, 898551=lm2901d; and resistor it is not 0,5ohm, it is 0,02ohm, an wiring it is wrong, not complete,
50610=lm2903n=lm358; sak=bcx70;sb1=bcx71

[taxo1965]

Hi freids,please help.
Can somebody help me with information where the red marked pin is connected? I've searched on board but I didn't find any straight connection.
Best regards

[vladanr]

436296 here you are

[taxo1965]

Hi freinds.This transistor is what series?Thanks.
Best Regards

[vladanr]

http://www.infineon.com/dgdl/Infineon-SMBT2222A_MMBT2222A-DS-v01_01-en.pdf?fileId=db3a30431441fb5d011445fbaff0018f

[elmat123]

Hi !
I have one situation that the car wont rev more than 3000rpm, EDU is problem !
any tips for component damage ?
In close look to the PCB nothing seems bad !!! I have resolded and check componennts




Thank"s in advance

[cnbbsxxx]

ISUZU 8971891360 (16267710 / 1.7L EDU) repair solution with pinnout, pictures and explinations!
If somebody need it!

pinout and voltage photo

[metercar]

See post #181 a pic with full pinout and voltage to test and without pass

[mexanico1971]

hi,
it is not capatitor it is resistor 0.5ohm.did you check fets because something is in short circuit

HI
can you mark the Mosfet please

http://www.digital-kaos.co.uk/forums/attachment.php?attachmentid=376396&d=1279669848

[FevaX]

Hello guys, i have problems with the EDU of my meriva 1.7 2005, i tried some fixes posted here, but i didn't find the problem, was working one week last time i teared down, what can be the problem? How i can make a testbench? (i see some pictures but i dont know how to do it)
BTW i found this: http://www.cardiagnostics.be/-now/Reparaturanleitung%20EinspritzpumpenY17DTL.htm
any help is useful!
Tnks!

Current state of the board:
455553455554455555455556455557

[mexanico1971]

HI Guys
The BYV32 200 how many amps should be ?! 20 amps?!
And Buz91A 600v 8A is fine ??!
What references are you guys using ?!

thank"s in advance

Brs

[Staker]

Hi guys

Does any one of you know replacement of the big orange electrolytic capatitor (original is 35v 1500pf 125*C) that is easly found on ebay/aliexpress

Thanks in advance.

[castin]

shortcircuit in this place. Any idea?

[Pepita]

That's right.492841

[castin]

Thanx Pepita, what is the first current consuption after connect power?

Pepita please send me biger scheme for this unit (if possible).
ThanxI have heard that it is necessary to use a min. 10a

[Pepita]

Without solenoid valve: 0.2 ampere

[castin]

I now, but for start converter i need min 10A powersuply?

[Pepita]

Yes, it's about 5-10 amps in operation.
Can not you test the battery? (10 A through fuse)

[castin]

Im try test on table, but my powersource is to low. Im try on car. Thanx for help and info.

[TR0UBLESH00TER]

Could anyone tell how much ripple is on +130v line ,mine is stable but when loaded ripple is up to 50 volts ?

[yanko8605]

Hi to all
I have edu for repair but it have many voltage missing like some 12 and 160 voltage
any idea
thanks in advance 540789

[janusz21]

Hi friends , i need info image of this components sB1
Schottky diode ?

[mapexo]

interessed pinout for test screen posted?


Hi

Here a bench test

Must draw at least 4 amps (I use spill valve these days)

[Satmanek]

I have 2 drivers that should work and do not work. 170V on the 10uF capacitor is, the current consumption in the stand is 180mA. How to run it without a car? I saw someone connect the 50W bulb and give the signal from the generator to one of the two inputs. Just what signal, 0-5V or 0-12V rectangular whether it must have a proportional filling?

[andreiciocan]

My merida`s ecu got problems, desoldered and found a blown capacitor. What to check next ?
http://i64.tinypic.com/bezzg0.jpg

[volorucinski]

Check the voltages...

[vladanr]

stamanek ,you have to bring generator signal from UPA programer and put home bulb 220v

[andreiciocan]

i have a signal generator, what kind of signal and frequency does it need ?

[digitalol]

Hello, i am working on one unit that suddenly stopped working. No crack solders , it was repaired 2-3years ago. I checked voltages and i got 160-170v. Only voltage that is problematic is 8v. IT has only 6.5. Nothing is getting hot and consumption is 160ma when powered. Should i change 7808 or it can be something else?

[zzivo]

Please finally solve the transistor 9732 I R 704K, BUZ 91 does not work. Thank you.

[stas12]

...IRF640...

[digitalol]

Hello, i am working on 1 unit that makes me problem. I changes 9v regulator and all was working. Today customer calls me and told me car cuts. Car cutted suddenly on bump. Car then start and cuts after 10 sec work. I opened edu again and all voltages are spot on. 9v 12v 170v. Where should i continue looking for the problem?

[alldecode]

unsolder all pins, and disconect board from camatitors and coil

put picture, and i show what need to soldering

regards

[digitalol]

Hello, from last time i have 2 more with this same problem. I desolder the board, check all the solders and do resoldering. Check transistors, condensators, diodes all ok. I change stabiliser with 7809. Car works for anywhere from 20sec to 2 min and dies. I can pay for the solution of this problem...

[TR0UBLESH00TER]

Just solved one yesterday with this symptoms ,culprit was bad contact inside connector of spill valve .

[digitalol]

Well i have cleaned the contacs and still the same. I make bench test with signal generator and light bulb... and the bulb is lighted and working. I leave bench test for 5 mins and no problem,, but when i put to car works 20 sec and shut down. I have 2 units and they have same problem, so must be something inside edu.

[vitorponte]

Hello Guys, I have a problem with one of these EDU, Can someone explain where the 12V from pin 4 goes to next? If I connect 12V in Pin 4 nothing happens, but if I feed 12V in the 1500uF capacitor I have all the voltages, 170V on spill Valve and 8.6V on the regulator.

Thanks

[mexanico1971]

Well i have cleaned the contacs and still the same. I make bench test with signal generator and light bulb... and the bulb is lighted and working. I leave bench test for 5 mins and no problem,, but when i put to car works 20 sec and shut down. I have 2 units and they have same problem, so must be something inside edu.

The circuits of the PCB are bad , that why car shot down after some time !
Or wires in wire-loom are black and make resistance and EDU circuits get hot .
I have here more than 10 width the same problem
Brs

[PierreTheron]

buz91 also found buz31 inside..

[Tom_x]

Hi

I have problem with EDU
Disassembled, pcb removed, checked all solder, repair bad solder. Looks like all components good
Tried on bench with 60W bulb and 2kHz input, all voltages present, bulb light. Test run approx 1 hour, no problem.

On the car won't start with this EDU.
Car start with other, donor EDU...

What is the problem?
Any suggestion?

Tom

[Pepita]

Hi Tom_x
Probably missing the 170 volt initial voltage.
The 12 volt holding voltage is working.

[Tom_x]

Hi Tom_x
Probably missing the 170 volt initial voltage.
The 12 volt holding voltage is working.

Hi
170 volt ok, only on valve output no voltage

[Tom_x]

Someone have schematic for EDU?
What is the best equivalent for FET and power diodes?

regards
Tom

[meser75]

Hello.
I drew the electrical schematic diagram myself.
Not all, but I think enough to make repairs easier.
803439
Who needs a photo of the board with the numbers of the elements, write to me in private messages.
P.S. Don't forget to click Thanks+Rep.

[ppservis]

Thanks,Best Regards

[djtaotao]

I have a problem on a EDU which has burned T1&T2, now replaced with 2xBUZ91, but now they are getting too hot on bench testing, with a 230V light bulb as a spill valve load and signal generator at pin 22.
Can someone help me?
Thanks!

[djtaotao]

Can somebody confirm that these pins for T1&T2 are connected to the ground? If I make a wire bridge to the ground the EDU is not working and power consumption is increased a lot.

[meser75]

Can somebody confirm that these pins for T1&T2 are connected to the ground? If I make a wire bridge to the ground the EDU is not working and power consumption is increased a lot.

Errors are not excluded in the schematic diagram. Write, I will correct.

[redsuns]

if i understend well the EDU is just plug and play , noneed of some decoding or similar ?

I also have the doubt, have you heard something?

[Pepita]

The EDU is just plug and play. 1000%

[boniing]

I repaired a dozen electronics for the 1.7 DTI engine.
My experience is:
- the vast majority of problems are weak joints at solder joints, heat, vibrations ... it is obligatory to solder all joints again,
- the problem is the voltage stabilizer, housing TO-220, I recommend replacing the old one with a new 7809,
- connect some of the connections with an additional wire, there are pictures on the web,
- I had a problem with el-co 10uF / 35V, be sure to replace them with el-co but the new ones must be resistant to high temperatures,
- bad connection on 220 Ohm resistors, serial connection, SDM, on the board, be sure to solder them again.845559845560845561

[AlexDuGuesclin]

Hello,
Currently I am trying to troubleshoot my father-in-law's Opel Astra.
Some of you are really, really strong.
This forum is a wealth of information.
Thank you all

[RadovanPetkovic]

I had the opportunity when I test the EDU on the desktop, it works properly with the original valve. The car will not start, that is, it will not work. I repaired many computers but I did not have a case like this. When I had problems with about three ICs in the tssop14 case, I gave up because I didn’t know what they were. And I couldn't buy them anywhere. I almost found out what they were and started to download the schematic from the ODU. It is extremely complicated and I am glad that I came across work from my colleague MESER75. A big thank you. I've fixed a few bugs I've noticed and will upgrade in the future. As far as I can see, the part around the 74HC logic circuits and the quadruple comparator is missing .....
I will post these pictures so maybe it will help someone ..... Let's finally get the correct scheme of the complete device

850675850676850679850680850681

I will try to clarify the operation of the entire device in my own way.
The ECU sends the frequency to the EDU as the valve should open and close. The valve opens easily on Uvpp 12v. But at higher pressures it needs extra help at a higher voltage of 170V. That's why it works properly on my desk and it can't on my car. There is probably no proper voltage increase to 170V. Exactly that part around the 74hc circuit is not working properly, I don't have oscillograms. I am waiting for the ordered items to be replaced. While I'm waiting in part, I'm going to fix the electrical scheme a bit.
T11 via diode D7 turns on 12V to the valve, synchronously to it transistor T17 to the other end of the valve turns on ground. That's how it works for me now, but the T4 should turn on 170V in the T11 clock to help the valve work properly even at high pressures.
In this scheme, I think the oscillator that controls T7 -> T1 and T2 is missing. Most oscillations are made with two or three inverters IC 74HCO4. These oscillations create a voltage of 170V via the Step Upp power supply. I still have to clarify that mystery with the scheme.
Due to poor contacts and high voltage, 5v circuits are damaged.

[RadovanPetkovic]

Let me clarify a bit the operation of the circuit step up, which raises the voltage for example from 12 to 170V as in our case
850689
852273
In our case, the elements participating in that circuit are: L2, D3, C8 and T1-T2 in parallel.
Resistor R27 measures voltage drop and current. If it goes out of certain values, the circuit stops working and that is detected on R13 and then on a double comparator or operational amplifier ......

High-power resistors 0.1 0.033 and 0.022 Ohms serve as current sensors and protect the entire circuit. If any of them is damaged or burned. The transistors are also damaged, ie they are short-circuited
I think the T7 gate lacks a source of oscillations as far as I can see. I'll check and we'll know

Useful videos:
https://www.youtube.com/watch?v=Fvdb7gArNjw&ab_channel=electroinektor.
https://www.youtube.com/watch?v=xf4VNJNm_W0&t=15s
https://www.youtube.com/watch?v=uUk5N_2Cuw8&t=2s

[janusz21]

this components sB1 IT IS OFTEN DAMAGED

[RadovanPetkovic]

It's not. While I wait for 74HC02 74HC04 and 74HC08 to arrive. I checked all the semiconductors and comparators. Everything is correct. If by any chance a small SMD resistor burns out, the only thing left is the 74HC circuit. I know for sure if the 74HC04 inverter circuit is not working well. There is no voltage of 170V.

[RadovanPetkovic]

I finally got the TSSOP14 adapter so I made a tester for all three IC circuits. Since two inputs are required, I used two buttons to connect to ground to give a low level state while not pressed is a high level state. I connected the LEDs to each output of the logic circuit and I can see the output state exactly. If some output does not match the logic tables of the 74HC IC circuit we can easily see which circuit is incorrect. The scheme is simple by connecting all the inputs in parallel to the buttons and the outputs are all on LEDs. I bring a 5V power supply and testing can begin.
You can see what it looks like in the pictures, and I made a video, but the explanations are not in English.

857323857324857325857326857327

https://www.youtube.com/watch?v=CLcDYUIwVe4&ab_channel=RadovanPetkovi%C4%87Ra%C5%A1a

[electro10]

Hi all,

I want test this ECU on bench. I have the pinout:

1,4 -> +12V
17 -> GND
14,20 -> output
25 -> PWM input.

Someone knows the best frequency range to test this ECU?

I see this video: https://www.youtube.com/watch?v=KVhbm_9ZhSQ&ab_channel=SvenRoosvald

Thank you

[volodin69]

Try from 30hz to 500hz. It will not happen anything if you test it from 1hz to 1kz, but to be safe, start from arround 30hz
I thought all these y17dt went to scrap. Are history...

[electro10]

Try from 30hz to 500hz. It will not happen anything if you test it from 1hz to 1kz, but to be safe, start from arround 30hz
I thought all these y17dt went to scrap. Are history...

Thanks by your answer.

sometimes a unit like this appears to be repaired, but it is rare indeed..

[volodin69]

Yes. That is why you need to put a 1kohm resistor series wit a LED on the return signal from the EDU i.o. to see if edu will communicate to ecu on the car. Look in Autodata and you will se those 2 pins from ecu to edu. One is a signal out from ecu to edu and the other one is reverse... the feedback signal from edu to ecu.

[alexk23]

Thanks for sharing, lovely content

[roybws]

Hi! I have one of these modules not working. I resoldered all and done some bridges that usually solve common problems but still the same. What components usually fail and how to check it on bench?

also different reference numbers can be exchanged?

[RadovanPetkovic]

Another experience..... Checked all the elements on the circuit board and everything is correct. I wasted days checking two or three EDU computers. It doesn't work, it doesn't work...
One day I sit down and solve them all quickly and easily. I checked all the fine lines. And if they look visually correct, by checking the conductivity. Imagine there was no conduction. All thin lines next to large solder points where the voltage and frequency are high. Damage to thin lines is possible. Or mechanical interruptions during unprofessional desoldering of components.....

928413

[bkteliev]

Здравейте, meser75! Бих искал да се свържа с Вас относно публикуваната схема за дискусия и обмяна на опит

[troodon]

if someone changes the 7809 then for correct low dropuot type - if the car starts and the voltage on the battery falls to 9-10V then the cheap 7809 has not enought input voltage ( in some cases with bad joints to 1500uF Capacitor its more often )
i changed 50+ LDO for LM2940-8.0 lov dropout and the units newer returned.

i have repaired or remanufactured 1000+ EDUs