Clio sport immobiliser

Hi i have a 2000 clio sport 172. The car is my rally car iv worked on it for the last two months to get it finished finally got all the work done went to start it the morning of my first rally in it and there was nothing, the engine turned over but did not fire up the immobiliser light just flashes not fast just at its normal rate the fuel pump primes but there is no spark! Can someone help and just confirm that this is the immobiliser locking the ecu!

Any info is appreciated many thanks :d