Hi Swiss,
Thanks for your reply.
I had a replacement ECM with all my data on it and the same problem as soon as it was connected.
There are no faults on the dash and its the same thing every time I go to start.....nothing, so pop the bonnet and use my lead then it runs as normal.
AA diagnosed as On relay side to ECU showing 3v, suspect poor connection on ECU.
The lead bypasses the relay and it starts.
Showed this to the main dealer and they said possibly ECM
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