Hi people I need some help I cannot get my car to start and we believe it's the factory immobiliser as the fuel pump will not run unless the immobiliser is off and I've had an auto electrician out and he agrees it's to do with the doors and how it locks and arms system we have tried several things to sort but as yet nothing seams to turn it off I can double lock it and it chirps several times when locked then double locked but not beeps or chirps to say it's off and consequently it does not turn off and does not allow fuel pump to run so it can start if anyone at all can help I'd really appreciate it

Cheers in advance and fingers crossed somebody can help me