Can you go out and try to start it and tell me if the headlights and dome light dims when trying to start it
Thats ok i have a real good idea whats wrong. I have worked on hundreds of these complaints.
If you click here you will get the full technical readout on this problem, but i can tell you from 35 years in this business its probabably be a door cylinder/switch that is at fault.
There is a little trick that we use;
Try locking and unlocking the passenger door wth the key, sometimes this works but i bet its still the driver door lock switch that is throwing off the secui=rity system...thats what i have always found.
If you have further questions feel free to reply.