Security system will not let me start my 2002 infinite qx4

Hello, what kind of security system is in your Infiniti? Is it factory anti-theft? Is there a security chip key? Is it an add on security system? How can you be sure the security system is causing the no-start? Cranking and not starting is usually not related to anti-theft system issues. But, it does depend on what kind of anti-theft system your vehicle is equipped with. This will take some hands on testing by a trained technician who can figure it out. https://repairpal.com/auto-repair-near-me