Disable immobiliser

Hello dear Volvo community, for those who now seem familiar, I have started the article with the Volvo 850 t5 ́96, which has no spark and no fuel. Since I have already got everything I will keep here for a short time now… I have volgendes problem: motor turns, all sensors function (all crosswise exchanged with my second lch), fuel arrives in the rail with the nozzles and also 3 bar, MKL lights up, MSG functions and is also second working available , I have a working antenna ring, no bugs in the memory (as far as that’s all I could turn out by various means). Nevertheless, the injection nozzles do not get a signal injected and the ignition coil does not spark. The symphtoms look to me as if the immobilizer has no desire or both keys have suddenly forgotten their signal… Now my question: is there someone who has already experienced this? can you find out if the S If no can I re-learn them? Or does someone know how to just put the immobilizer out of combat? Look forward to your answers Greeting Lucas