Originally Posted by BorderPatrol-MJ
I think its more complicated than that cause im getting power at the PDC, i checked every fuse.
Is it a factory alarm? If you step dad tampered with it the alarm may have disabled the entire PCM/vehicle and may need to be towed to a dealership to "reboot" it essentially.
I had a similar issue with my father's old ZJ. It stopped recognizing the alarm remote and the key was not resetting it either. After retrieving the spare remote from home it reset the alarm.
If it is an after market alarm there are some wires in there that can be cut into that will disable nearly every thing. I had to rewire my entire ignition after removing a faulty alarm left by the previous owner.