key chip on 1999 Nissan Pathfinder

working on the vehicle the wires were cut. After repairing them the vehicle will not start. Would the key chip have been effected? Everything elese has tested OK?

Asked by for the 1999 Nissan Pathfinder
I hope you have fixed your no start problem by now. If I get a car with a no start I suspect is antitheft related, I try the second key if available. If the anti-theft light on the Pathfinder doesn't light check fuse #24 (7.5 Amp), and there is a 7.5 Amp fuse #11 in the circuit as well.
Did it require a Nissan scan tool to diagnose the Nissan anti theft system?