engine ecu.
- Thread starter drkwack
- Start date
This site contains affiliate links for which LandyZone may be compensated if you make a purchase.
JohnP38
Active Member
- Posts
- 619
- Location
- Alton Hampshire UK/Cape Town SA
If it is a P38 yes,as there is a security code link between the becm and the engine ecu.
klf400
Active Member
- Posts
- 312
- Location
- forest of dean, gloucestershire
hi you have not indicated what engine you have but i am assuming its petrol .
i have not changed an engine ecu on the gems engine but i have on the thor engine , the ecu.s are coded and you cant change the code on the ecu , what you need to do is read the code of the ecu and change the code on the body controller to match ,otherwise it wont run
Datatek
Well-Known Member
- Posts
- 44,119
- Location
- Near Poitiers SW France
- Posts
- 58,170
- Location
- Preston Lancs.
You will have to read the EMS code from the EDC ECU then write it to the BECM. So i am told. If Hawkeye can do that.
klf400
Active Member
- Posts
- 312
- Location
- forest of dean, gloucestershire
are you thinking of a sync-mate ? i think you could be right ,faultmate and autologic yes , you would think sync-mate will as wellYou should, I think, be able to re-sync it, I'm sure you can with a Faultmate.
dougdotcom
Active Member
- Posts
- 605
- Location
- Langley Mill. Nottingham
the first picture is read from the ECU via faultmate, the second is a picture of the readout from a part of the Becm showing the immobiliser code that is the same as the EMS code. this can be written to the Becm via the OBd2 port under the passangers glove box, this code in the Becm MUST match the ECU code on diesel range rovers (p38) or it will just crank for as long as the battery is able.
Attachments
Datatek
Well-Known Member
- Posts
- 44,119
- Location
- Near Poitiers SW France
I was thinking of Hawkeye. I believe the sync code is a fixed value after it is first written in the Diesel ECU. You can buy the diesel ECU new set for no immobiliser handshake or for a code to be written on instalation. Once the code has been written it is not possible to go back to no immobiliser mode.
dave4x4
Active Member
- Posts
- 360
- Location
- Chester, England
Datatek wrote;
I know that for a fact. I vaporized my diesel ECU a few years ago and fitted a brand new ECU (it was paid for by my insurance company!)
The initial setting has a "robust" and "non robust" setting. 'robust" means it needs the EMS code. It is a one time write which cannot be reversed.
Also if you use faultmate you need multivehicle version to change the ECU.
I know that for a fact. I vaporized my diesel ECU a few years ago and fitted a brand new ECU (it was paid for by my insurance company!)
The initial setting has a "robust" and "non robust" setting. 'robust" means it needs the EMS code. It is a one time write which cannot be reversed.
Also if you use faultmate you need multivehicle version to change the ECU.
Datatek
Well-Known Member
- Posts
- 44,119
- Location
- Near Poitiers SW France
I think when they leave the LR factory, they might just all have the same code (which is something obvious that I won't publish in Hexadecimal code). Might be interesting to just swap one over and see if it works
dave4x4
Active Member
- Posts
- 360
- Location
- Chester, England
Datatek wrote:
I think I will leave that for you to try first. A few years ago when fitting an uprated chip I managed to get my car into "limp home" mode. Engine gearbox and suspension all stopped working properly!
There are 2 eproms in the bosch diesel ecu. One contains the mapping which you change when you chip it. Not sure what is in the other one. Maybe it is these EMS settings. I was planning to unsolder one and read it to see what is in it.
I think I will leave that for you to try first. A few years ago when fitting an uprated chip I managed to get my car into "limp home" mode. Engine gearbox and suspension all stopped working properly!
There are 2 eproms in the bosch diesel ecu. One contains the mapping which you change when you chip it. Not sure what is in the other one. Maybe it is these EMS settings. I was planning to unsolder one and read it to see what is in it.
dougdotcom
Active Member
- Posts
- 605
- Location
- Langley Mill. Nottingham
Send a pm if you get stuck and ill come up to you.
Datatek
Well-Known Member
- Posts
- 44,119
- Location
- Near Poitiers SW France
If you have the right kit, you can read EPROMS in situe
Making sense of the code is the difficult bit
