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Is This An Ecu Problem? Plz Help!


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#31 Pops_Guild

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Posted 24 December 2022 - 06:54 PM

I sympathise with you, this is a sucky situation but the problem with buying an ECU from the UK is that all post 92 injection Minis had matched immobilisers. minis and their ECUs from Japan don’t. In the later years UK and Japan used the same ECU numbers but they weren’t the same. I have this on my 96 Japanese SPi, I have MNE101170 but no immobiliser, if I put a UK MNE101170 on my Mini it won’t work.

Unfortunately not everything is documented so there aren’t really any experts with regards to Japanese Minis, except in Japan. This forum doesn’t have much of a Japanese following.

My take is that you’ve bought MNE101351 from the UK which is expecting an immobiliser and will require it to be matched to one before it works. I think a MNE101350 from the UK would have the same issue. What you need to try and do is source MNE101350 from Japan or get your MNE101351 altered to remove the need for the immobiliser like xrocketengineer did.

#32 chamath

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Posted 27 December 2022 - 05:47 AM

what if I wire an immobilizer? is it possible?



#33 Pops_Guild

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Posted 27 December 2022 - 10:31 AM

It won’t just be a matter of wiring in an immobiliser unfortunately, you need the right kit to match the ECU to the right sort of immobiliser. It’s a specialist thing and would require you to send the ECU and immobiliser off to that specialist.

Honestly the best advice I can give you is that your choices are a) send your original ECU off to get repaired, b) send your new ECU off to have the immobiliser need removed, c) keep looking for a direct working replacement ECU.

None are instant or cheap options but it is the single most important part of the SPi system so that’s not a massive shock.

#34 Pops_Guild

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Posted 27 December 2022 - 10:34 AM

…as mentioned earlier in the thread ATC Drivetrain seem to be the go-to specialist for ECU repairs etc. I’ve never used them but this forum has many positive recommendations for them.

#35 Midas Mk1

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Posted 27 December 2022 - 10:50 AM

I’d just be going standalone aftermarket and forgetting the rover mems.

#36 chamath

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Posted 27 December 2022 - 11:23 AM

im currently trying to get an update from somerford, i wonder they sell SPI ecus with immobilizer built in though, the item tittle is

ECU- MANUAL, STANDARD & COOPER VIN 134455 ON- JAPAN

not sure anything else is the issue here

 

 

 

 



#37 chamath

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Posted 29 December 2022 - 07:24 AM

I just found out this info on this website - https://memsfcr.co.uk/ecu-versions/

So 1 stands for coded, My original ecu 350 - ends with 0. So its uncoded.

 

What exactly it means when it says "Coded" ? Just the immobilizer?



#38 Deeppockets

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Posted 30 December 2022 - 07:40 PM

Reading the details in the link, the page says 4th digit represents uncoded/coded, i.e. MNE101070=uncoded & MNE101170=coded. 

 

From what I can gather the last digit of the later part numbers is the revision. So MNE101350 & MNE101351 are the same part as rev.0 and rev.1 respectively.  I do not know whether parts of different revisions are interchangeable - form, fit and function? Perhaps someone on the forum has a deeper understanding of the Rover part number schemes.

 

Do you have access to a Rover diagnostic/programming device? The immobiliser coding disable is likely to be a software switch. 






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