Welcome, and thanks for using Just Answer. I am Cam, and I will do my best to assist you. When you are finished please click on accept only if you are satisfied. I don't get paid unless you do.Please do not accept if you cannot leave positive feedback. I don't know if you are a tech or a just working on your own vehicle so we may have to fine tune the answer. I only know as much about your problem as you have told me in your post, so my answers will be based on what you tell me so please add all the details you can. About your vehicle,
If you have no pressure at the fuel rail then that is the issue, the pump is not putting the prssure out. THe security will not stop the fuel from building pressure, it will stop the injectors from firing. Test the pressure. 50-60 psi is the spec at the rail. If that is far too low, then replace the pump and filter.