7 replies to this topic

[BennMurray]

In the process of removing the engine and I'm wanting to disconnect the ecu from the loom to allow for more room, but I'm wandering if as soon as I unplug the ecu will it "lock"? As i know this happens with some of the modern types

[BennMurray]

any ideas??

[BennMurray]

bump....

[BennMurray]

suprised no1 has an answer to this!

[BennMurray]

bump again..

[leroy26]

it doesnt on my m8s racecar but he dont have radios immbilisers etc

[xrocketengineer]

Since you are not getting many answers, I will give it a shot based on my limited experience. Since you have a 1992 I believe that you have an early two connector ECU. I am not sure what the number on it would be, however it is probably MNE10092. The alarm system should work like the the early version of the single connector ECU for Coopers MNE101070 (1993- 1994). That is the one I have. The alarm does not disable the ECU. It only disables the starter relay. You should be able to push start the car even with the alarm on. So your ECU should not "lock" when disconnected.
The later Cooper ECU's (1995? on) MNE101170 are interconnected with the alarm. The alarm must send a 4 bit code ( I believe) as it is turned off to activate the ECU. This type of ECU can get out of sync with the alarm an then it will not operate. Additionally, the alarm and the ECU must be matched if either is replaced.

I hope that helps,

Ivan

[icklemini]

disconnect battery, remove ecu, etc - re-fit and enjoy!

in short: no it wont 'lock'. :)