Freelander 1 L-Series Bosch diesel ECU replacement process?

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pscan.eu

Well-Known Member
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Has anyone here any experience, or documentation, on how to change an L-Series ECU? specifically how to match them to the immobiliser/alarm?

I have heard two conflicting and a potential third story:-

1. That you have to "factory default" a used ECU before you can code it to the vehicle with T4.

2. That you have to read the immobiliser code out of the engine ECU and then configure it into the alarm/immobiliser.

3. That if I read the EPROM contents then someone can hack the file to disable the immo.

I found the feature in the T4 to code it, but I couldn't get it to work, but maybe that supports story "1" as it wasn't factory defaulted.

Does anyone know?
 
I seem to remember someone saying about replacing the EPROM in the one you are installing with the one from the old ECU.

But then I also remember the Polish fella I was telling you about installing the F1 ECU in a 620 and 'hot wiring' it so that the immobiliser was, erm, immobilised.

I'll see if I can find the threads.
 
I have an EPROM programmer so I could clone one ECU to another that way too. Interesting.
 
This is the chap I was talking to about the L Series ECUs.

www.landyzone.co.uk

sail

www.landyzone.co.uk www.landyzone.co.uk

He has posted a couple of times on here about ECUs/immobilier. He sounds very much like your long lost Polish twin. :D

He is/was active on Polish Rover forum(s) and like you has built a L Series scanner by sniffing T4 messages. I am sure when I've been speaking to him and watching the videos he shared, he plugged a F1 ECU into a 620 and jumped some pins so that the immobiliser was not used. It fired the engine up, so the immobiliser was deactivated, but did not control the engine correctly as it would not rev, just basically idle. If you can find him ont web, he may be able to help. You never know a PM might be picked up, but he hasn't been on for a long time.
 
I have heard elsewhere that you can jumper certain wires to disable the immo. I need to support a customer in Portugal though and I don't really want to ask them to cut wires and stuff.
Really I need to send them an ECU and have them plug it in and it either works, or they follow some steps with pscan to make it work.
 
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