If you are changing the engine control unit you will need the keys and the immobiliser control unit, they are linked in threes!
If you have none of these there are no guarentees you will get the engine control unit to work at all.
The
coding is all sorted on ROM, so it cannot be forgotten if they have just been unplugged!
Fl@pper, you have kind of contradicted yourself mate!!
Did you mean the "BODY" loom is more specific (after the aircraft style connector).
I think that is what you meant! ;-)
The engine loom will be ok as it is just the loom for injectors and sensors etc.
The hard bit will be the body loom and mainly the immobiliser components!
TTFN