Suzuki Grand vitara with denso ECU finaly started by removing chip from ECU.....

[kd1]

CORRECT TITLE

Suzuki Grand vitara with denso ECU finaly started by removing chip from ECU.....

Just to summerise what we had done:

We were getting error code 83 which indicates a fault in communication between ecu and immobilizer and the grand vitara is a year 2000 tdi with a denso immobilizer.

We checked all the wiring twice over and was ok.

We thought the immo maybee faulty so we
kept the same ecu in the suzuki (picture enclosed) and put an identical immo bought into the car and swapped the chips shown in the picture of immo enclosed, from the original immo to new to hopefuly sync them up (ecu to new immo).
This did not work

We then thought the ecu could possibly be faulty so kept the original immo and changed the ecu for an identical one we bought but swapped the chip containing the pairing immo info from original ecu into new ecu. (top left 8 pin chip TC97101P) This did not work.

In the end what did start the car was removing and leaving the TC97101P chip of stangely enough.

Removing this chip allowed the new and old ecu units to work with either of the two immos (using the correct key for the immos of corse).

Maybee the ecu chip with the correct info was corrupt in both ecus so was not allowing the ecu and immo to sync with the correct pairing code in ecu? And without this chip in the ecu it was seeing either immo as the correct one as it did not have a code to compare either immo info as wrong against?

I have added the reading from both ecu chips (TC97101P)
to see if they look correct or corrupt, not sure if the parts of the reading in 00s indicate this.

We have been trying to get this car to work for a while and were told the only way to pair the immo to ecu were a ?2000 tech 2, now we are trying to figure why the car has now started lol? If anyone has any idea or knows why this has worked would be very interested to hear?


Hope this helps anyone else who have had problems with this car started.

Thanks kd1

[kd1]

Attachments forgot to add.

The ecu chips TC97101P were read as a TC89102P x 16 on the upa - usb programmer as this were the highest TC chip the programmer went up to and the only TC selection that would give a read out of the four TC chip choices shown on image (attached)

We took another reading of the TC97101P chips read as a TC89102 on a xprog m as this were the highest TC chip the programmer went up to and the only TC selection that would give a read out of the two TC chip choices shown on image (attached).

The reason we still took a reading without the right chip selection choices was to see if their was a difference between the two chips to confirm this were the pairing chip for the immo ecu sync but have posted the readings to see if they look like they contain errors as I thought ffs are shown in blank spaces but shows 00s which I were told is a none return value ?

Thanks kd1

[kd1]

We unpaired the keys to the immo and the keys still work so removing the ecu chip switches the immo off.
With the ecu to immo pairing chip inplace and correct keys car will not start so chip must be corrupt and some how got spiked.
hope this helps anyone with this problem.

kd1

[jlangmead]

Hi kdi
Thanks fior the info - My wife's Vitara is doing exactly the same and I must admit I'm stumped as not very good with electronics. I've been out with the multi-meter and tried all the things that have been suggested - got the DTC error codes and (83 on ECU and 23 on ICM) and then tested for 5v on ICM connector and all that... but might try the 'chip trick' as it sounds like it might work. i really can't afford the expense of buying new ECUs\ICMs or even taking it to a garage.
thanks
Jon

[jlangmead]

Hi kd1
One more thing. I haven't yet done a continuity test between the ICM to ECM data link cable. Do you know which pin it is on the ECM?
I think it's Pin 13 of E61 but not 100% certain.

thanks jon

[elecautocr]

very useful post, thanks

[jlangmead]

Hi Kd1
I removed the chip in the ECU to disable the immo and am now getting error 81 (ECU\ICM code not matched). The car wouldn't start but the battery was a little flat and so that may be the reason. I've put the battery on charge now.
When you did this yourself did you experience any new DTC codes (specfically code 81), the 83 code has now gone but this may be because code 81 is overiding the 83 code.

thanks
Jon

[jlangmead]

Hi
just to conclude this. I managed to get hold of another ECU IMMO and ignition lock\key and played around a bit more. These weren't paired and so I was expecting error codes showing that pairing was required - and I did get these. However, I soon discovered that the new IMMO worked with the old ECU (the one with the chip removed) and either one of the ignition keys (original and\or new). So I guess removing the chip in the ECU does indeed disable the immobdiliser but i must have had a dodgey IMMO which is why it didn't fix the problem by simply removing the chip from the original ECU.

Happy days! :dancing2:

[Diita]

Had the same problem, thx kd1. In my case i remove the TC97101P and with immo connected the car was not going to start. I removed the immo and dtc cleared and the engine starts with no problem.

[pajo]

i am remove tc97101p and immo box and car starts without problem

[Rhinoman01]

That looks to be different from the earlier Vitara with the Mitsubishi ECU but I will try it.
The Mitsu ECU seems to test the link between the micro and SEEPROM by reading 5AA5 from the SEEPROM and and then fail if thats not returned. The 00s seem to be just blank addresses, the ECU can store four key codes and doesn't use all the addresses.

[mcab]

CORRECT TITLE

Suzuki Grand vitara with denso ECU finaly started by removing chip from ECU.....

Just to summerise what we had done:

We were getting error code 83 which indicates a fault in communication between ecu and immobilizer and the grand vitara is a year 2000 tdi with a denso immobilizer.

We checked all the wiring twice over and was ok.

We thought the immo maybee faulty so we
kept the same ecu in the suzuki (picture enclosed) and put an identical immo bought into the car and swapped the chips shown in the picture of immo enclosed, from the original immo to new to hopefuly sync them up (ecu to new immo).
This did not work

We then thought the ecu could possibly be faulty so kept the original immo and changed the ecu for an identical one we bought but swapped the chip containing the pairing immo info from original ecu into new ecu. (top left 8 pin chip TC97101P) This did not work.

In the end what did start the car was removing and leaving the TC97101P chip of stangely enough.

Removing this chip allowed the new and old ecu units to work with either of the two immos (using the correct key for the immos of corse).

Maybee the ecu chip with the correct info was corrupt in both ecus so was not allowing the ecu and immo to sync with the correct pairing code in ecu? And without this chip in the ecu it was seeing either immo as the correct one as it did not have a code to compare either immo info as wrong against?

I have added the reading from both ecu chips (TC97101P)
to see if they look correct or corrupt, not sure if the parts of the reading in 00s indicate this.

We have been trying to get this car to work for a while and were told the only way to pair the immo to ecu were a ?2000 tech 2, now we are trying to figure why the car has now started lol? If anyone has any idea or knows why this has worked would be very interested to hear?


Hope this helps anyone else who have had problems with this car started.

Thanks kd1
Thank you Kd1 worked a treat for me ! removed chip from ECU & removed immo box turned on ignition & cranked no start . disconnected battery for 2/3 min reconnected battery and started first time! Thanks again.

[Stufan24]

Thanks. Great work

[Tdmice]

So this works ok and isn't too difficult?

[darrenhyland]

I can confirm removing the eeprom and disconnecting silver mitsubishi labeled immo box located above accelerator pedal works 1000%!!!!!!!!!!!:thrasher:

[Dazel]

got a 1999 vitara 4U with immo fault.

So out of the engine ECU which chip do i have to remove & which out of the Immo ECU do i have to remove?

[darrenhyland]

got a 1999 vitara 4U with immo fault.

So out of the engine ECU which chip do i have to remove & which out of the Immo ECU do i have to remove?


Read from the beginning of this post and all info is there

[ssk2400]

thanks for the infomation does this work every time ?

[darrenhyland]

thanks for the infomation does this work every time ?

100% for me after 8 happy customers sofar:beerglass:

[datapage]

PERFECT FOR ALL KIT.

.do not forget to thank a few thanks ...

[panda035]

I have tried this and it works 100%

[marek128]

I hawe tried too and works 100%

[bristold]

have a GV with immo code 23 and will try same.

Thanks

[pavtekno]

Many thanks, worked a treat!!!

[Autotecno2006]

Many thanks, Job SORTED ! Great Fix. Regards P.

[xavierbroda]

Hi
I have a 1996 Suzuki with the same problem in ICM. I send the ECU and ICM to an specialist to repair it and the car has still the same problem. This evening i will try to remove this chip from ECU and i hope can solve the problem.

[xavierbroda]

i removed the chip from ECU and the car works!
Thank you for the help and have a happy new year

[iustin73]

sorry but your archive is broken can you repost them? thanks a lotttt

[patoryan]

thanks great site for help

[patoryan]

thanks took chip out vitara started first turn of the key thanks for ur help

[patoryan]

hi have 98 toyota corrola 1,3 petrol immobiliser is not working the keys got wet and the car wont start my friend had alook at it says immobiliser is is not reconising the key can i disconect the immo thanks:ciao:

[keygargoil]

hi have 98 toyota corrola 1,3 petrol immobiliser is not working the keys got wet and the car wont start my friend had alook at it says immobiliser is is not reconising the key can i disconect the immo thanks:ciao:

not the corolla but if the immo light is going out bridge pin 4 and 13 for 30 mins with ignition on

[delio78]

working 100% with remove chip from ecu
car is suzuki grand vitara 2.0TD
tnx and best regards

[Fec001]

Is this solution works with vitara 1.6 mitsu ECU? I don't find chip like you said in ECU...

[quinnd]

Hey you Suzuki guys, can someone take a look at this Vitara and give me my options???
http://www.digital-kaos.co.uk/forums/f178/2004-grand-vitara-poss-immo-off-321408/

[barginwow]

I am having the same probs coil light flashing and not starting, I am going to remove the chip and unplug the immobilizer and disconnectnthe battery for a few mins fingers crossed

[barginwow]

Its works!!!!! wow wow wow wow wow wow

I`m soooooo happy Thanks everyone
:roflmao: :roflmao:

[fdfx3]

I do have the same problem, I'm gonna try this as well. thanks.

[icooo1]

work perfect:top:

[ivanmanley]

Hi All, I like the idea of this fix but the specifics seem very hard to come by. Seems to me a lot of people are boosting their ego's on the backs of others? I had posted on another forum and so far have had three helpful replies pointing me in the direction of this forum. The trouble is .... they are all the same reply word for word, so obviously a cut and paste answer .... Here it is >
"Heres the details for the bypass. Its worked for me and several others so far.

My GV has a Denso ecu. The GV has a transponder in the key and a code is generated via an induced voltge from the antena coil around the ignition barrel. The immobiliser module relays the key code to the ecu which is looking for a matched code. The code in the denso ecu (at least in my 1998 2.0 TD) is contained on an EEPROM chip. If this chip is removed, the ecu has no code to match a code signal to and so if it does not recieve a code, it will not immobilise the car. The chip has to be desoldered from the board. we replaced with a carrier so that it could be replaced if it did'nt work. In order to ensure no code is generated to the ecu, the immobiliser module also has to be removed and therefore rendering the whole system redundant as there is no code generated and the ecu has no data to read, in effect the ecu recognises not recieving any code as confirmation all data matches and so allows the car to start as if it had actually recieved a code. Exactly the same effect as if you replaced the transponder key,module and ecu for units with matching code. Obviously, there is now no security at all on the vehicle, so you may wish to fit an aftermarket alarm and immobiliser which can be switched out if theres ever a problem. I believe the full info with pictures of the ecu and chip details ect can be viewed at a site called digital kaos. I don't have a link but it will come up on a search. You have to register to post and post a number of times to view pictures. May not work for all..but worked for me. From chip removal to car started in less than 45 mins!
What annoys me is that loads of people must have taken they're cars to have the codes read and been charged the earth. I have read that some people have had the codes "cleared" by Suzuki. The code cannot be wiped from the system as the chip code is created by "blowing" the logic gates and so is always there. I believe the module also has a matching EEPROM but of course is a sealed canister. Easier to remove and disgard chip from ecu.I,m afraid I dont have any pictures as we didnt take any but I can tell you that its the eight pin chip in the top left hand corner of the board If I remember correctly when the board is orientated with plugs towards you. I have the chip details (from mine anyway):-

Its an eight pin EEPROM and the numbers are (as written)

T9804EB
TC97101P
Japan.

Hope it helps! ....... Now I have the same problem but I'm having trouble identifying the exact chip on the board as none are labelled as described? Even on here I've seen posts that just say that the info is at the beginning of the thread ... Is it? Where?. I'm not trying to belittle anyone as I'm not expert and that's why I'm asking for help. However, I'm now doubting how many actually "know" what they are talking about, and how many are just pretending? If anyone can genuinely help, I would be really really grateful!!! Ivan

[RhinomanUK]

The previous posters are referring to the Denso ECU used on the Mazda diesel engine models, which model do you have? what is the part number of the ECU?

[ivanmanley]

Thanks for replying so fast. It's a 2002 Grand Vitara. Not sure of the part number of the ECU but here are a couple of pictures.220147220148thanks.

[RhinomanUK]

I haven't had any luck using this technique on a Mitsu ECU, I think IC5 is the serial EEPROM, what is the part number of that chip?

[ivanmanley]

IC5 was the one I thought it was too from the description. However, as a novice, I don't want to remove the wrong chip without knowing for sure, as my soldering is probably not good enough to put it back! :afraid: No part number on the chip that I can see?

[RhinomanUK]

You might have to clean off the conformal coating to be able to read the part number. If your soldering is not good enough to be able to replace the chip then I would let someone else look at it for you or use a heat gun to remove it. Do you have an EEPROM reader to examine the contents of the chip?

[leo7]

Not sure i understand correctly, the only think i need to do is to remove chip TC97101P from ecu board?

[elnevio]

I have now followed this procedure, but it looks like I might be the first one to not achieve success!! :eek:


The background is as follows. About a month ago, while we were visiting friends, we experienced the flashy glow plug light and no starting, there was no joy for about an hour or so, but once the recovery chap arrived, the light had mysteriously stopped flashing and the car now started! It has recently had new glow plugs anyway (last year), and the recovery bloke suggested cleaning up the cable contact (is this the ground?) on the glow plug rail.

Then, it ran perfectly fine and normal until Friday morning (i.e. two days ago) when it reappeared. The difference this time was that no amount of waiting or anything made the light go away! I cleaned up the ground contact as mentioned, just in case.


Anyway, I found this thread, checked the details, and determined that this must be the problem with our 2000 GV. We had the error code 83, RF series 2.0TD engine, Denso ECU and the Mitsubishi immo unit.

So I removed the ECU, opened it and discovered that the required chip was there (i.e. TC97101P). I removed this chip using a soldering iron and little snips, taking care to ensure that all traces were removed and therefore no chance of any shorts. I also unplugged the immo unit.


I noticed that the glow plug light no longer flashed, but it did stay on (before attempting to start).

I can't get any codes (glow plug light just stays on).

Upon attempting to start, it eventually caught, but whitish smoke was also appearing from the rear of the engine bay somewhere! Further investigation revealed nothing.

As the battery was somewhat weak, I took it out, and left it charging all day. Upon trying again, I stuck with it, i.e. left the ignition on when it fired - but it will not run, even with the application of throttle as soon as it fires. The whitish smoke is still appearing from behind the engine when 'nearly' starting, drifting wispily up through the intercooler. It did smell a little 'fuelly', but I can't see anything obvious.

We are not aware of any similar problems previously, and the car has been sterling up until this. Admittedly, we've only had it for two months, but my mum and dad had it for nearly two years.


Any ideas what this problem could be? I have little experience with diesels, so please feel free to suggest the obvious!


PS. As I couldn't find this information anywhere, the ECU is located by the passenger's (in RHD) left knee, with the three yellow plugs, in case that's handy for anyone else looking for it! :)

[elnevio]

Not sure i understand correctly, the only think i need to do is to remove chip TC97101P from ecu board?

Yes, remove this chip.

Based on the posts of the others on this thread, some appear to have had success by also unplugging the Mitsubishi immo unit above the driver's (RHD) right knee as well. Others might have left the immo unit plugged in, but they all removed that chip.

Although maybe don't listen to me, I don't seem to have been successful so far!! :P

[multanen]

Upon attempting to start, it eventually caught, but whitish smoke was also appearing from the rear of the engine bay somewhere! Further investigation revealed nothing. I had very similar experience today: Immobiliser was disabled and it started but produced a lot of thick whitish smoke.

[twanger]

i had the same problem glow light flashing and wont start removed the chip from the denso ecu and unplugged the box above my throttle pedal got it to fire up and produced a lot of white smoke from under the bonnet then cut back out :blue: any ways kept trying to restart it and when it fires up if i keep the starter motor engaged the engine will continue to run and will rev up yet the moment i let off the starter motor the engine dies anybody else having this problem or has anybody got any more help please ?

[elnevio]

i had the same problem glow light flashing and wont start removed the chip from the denso ecu and unplugged the box above my throttle pedal got it to fire up and produced a lot of white smoke from under the bonnet then cut back out :blue: any ways kept trying to restart it and when it fires up if i keep the starter motor engaged the engine will continue to run and will rev up yet the moment i let off the starter motor the engine dies anybody else having this problem or has anybody got any more help please ?

This is EXACTLY what has happened to me. I posted up about it on the difflock forum. My next stop is the glow plug relay - but I don't know where it is. I am going to speak to Suzuki for a price, and also a picture of its location. I will hopefully post up when I find out more.

[elnevio]

i had the same problem glow light flashing and wont start removed the chip from the denso ecu and unplugged the box above my throttle pedal got it to fire up and produced a lot of white smoke from under the bonnet then cut back out :blue: any ways kept trying to restart it and when it fires up if i keep the starter motor engaged the engine will continue to run and will rev up yet the moment i let off the starter motor the engine dies anybody else having this problem or has anybody got any more help please ?

Do you have the TOAD alarm, by the way?

I have since found out the price from Suzuki for the glow plug relay - a mere ?116.93 :o. Part number is 38850-78E00. It is located on the driver's side of the engine bay, probably under an opaque plastic cover, next to the diagnostic connector. They have none in the country, or their main stock in Germany.

Next job will be to test the existing relay - which I hope to do before Christmas when I'm briefly home.

[elnevio]

Chucked a second-hand glow relay on - no change. Next suspect is the TOAD alarm. I don't know how easy it would be to remove myself, so will give some thought to an actual TOAD specialist either removing it, or checking it works.

[912secured]

Ecu is dumping fuel should be immo off fuel control on start up is controlled to a point after the 2 to 5 second shut down when no immo seen when legit, seen it on a bypass knock off. The square box one, it gets you to put 00 and ff at some spot, legit key must checksumm must be 00 00 to ff ff to get it to start. They are selling edc17 single immo off boxes for 37.00 us.

There is cheap equipment to log writes to eeproms (check hack a day, can find ready made boards for less than 23 bucks and does alot of other stuff).

The Italian's first learned to reset some immo chips with a 555 timer as a clock and write ff's on test clip and it got ecu's for the early 100,000 sport cars to start with a ecu from another one switched. Only use was to steal 90 percent of the time.

[BradleyMorgan92]

Hello I have a 2003 Suzuki vitara 2.7 v6 with a mitsu ecu. Can you please advise me as to what I need to do to remove the immo in ecu

May thanks in advance

[RhinomanUK]

You need a repair, there isn't a way to disable the immobiliser. I have experimented with this a few times over the last few years and what I have found is that if there is a problem with the memory chip in the ECU then the ECU will revert to limp mode but the CEL will not flash. There is no fault code for this issue however the immobiliser will be give a fault code for a serial link failure. I think that the CEL not flashing has been interpreted as the problem being fixed but it just causes a different problem. I have seen a couple of ECUs with emulators fitted and they have also caused the no CEL but fail safe problem.

[madbg]

For me this solution work.
I remove chip and unplug immobox.Car starts but with lots of smoke.

[RhinomanUK]

Car starts but with lots of smoke.

Yes, its now stuck in limp mode.

[madbg]

So what is the decision?

[savgv20td]

We unpaired the keys to the immo and the keys still work so removing the ecu chip switches the immo off.
With the ecu to immo pairing chip inplace and correct keys car will not start so chip must be corrupt and some how got spiked.
hope this helps anyone with this problem.

kd1

hi. many thanks for the post this fault has been going on for at least 5 years! The original fuses wire in the engine bay had gone balck/green so I replaced them after three days immobilised and it kicked into life the first time it happened. Hence maybe battery being a problem sometimes(?).
Anway i found a secondhand ecu without any keys or the Mitsubishi keychip reader that is bolted up next to the fuses on the driver side.
I desoldered the 8 pin immo chip in the seconhand unit ecu fitted it and disconnected the mitubishi unit then turned the ignition and the car failed to start -glowpug light flashing. I then reread the posts about disconnecting the battery to clear fault codes on denso ecu gv vitara and 2/3 minutes later turned key and it fired staightaway! I can swap between the original set up- ignition off -and the chip deleted ecu but do not have to disconnect the battery at all.

Regards
Gino

[Master8]

i'm resurrecting this thread because it's happening someting strange........ for many years this solution works for me, now while changing battery due to forgotten lights on I'm stucked again with no engine start.

eprom is still removed and immobox disconnected (I don't even remember where I threw it lol )
also tryed to disconnect again battery and reconnect but doesn't work.

any ideas?????

[tom a4]

Hello. I have a problem with this car, Grand Vitara 2.0 ecu denso I removed tc I disconnected the immo box. The engine does not start, the glow plug indicator is flashing. Unplugging the battery does not help. Any ideas ?

[Master8]

Seems same problem that I had.
Car started again after some weeks of stop. Seems to need some reset. But disconnecting battery wasn't enought for me. Try to disconnect negative and bypass on positive to discharge any capacitor. Let me know if this worked for you...
Send me pm just for try !

[tom a4]

Unfortunately it does not work

[Master8]

We should understand what need to be reset

[meisterraul]

Hi there. I am getting the same code, 83 on my Suzuki Grand Vitara j20a 1999. Basically it's a project car, this engine is mounted on my Samurai. I have Mitsubishi ECU as seen in the picture attached. Will this mod work for me? Thanks.