Fuel System Pressure Release
WARNING: This page does not describe the selected car, but rather 7 other vehicles, including the 2003 Infiniti QX4, 2003 Infiniti Q45, 2003 Infiniti M45, 2003 Infiniti I35, and 2003 Infiniti G35. However, it is still accessible from the selected car via links, so may be relevant.
Remove fuel pump fuse. Start engine and allow it to run until engine stalls due to lack of fuel. Crank engine 2-3 more times to verify all fuel pressure has dissipated.