How do you troubleshoot the fuel pump on a Lexus gs300?

To troubleshoot the fuel pump on a Lexus GS300, start by checking the fuel pump fuse and relay for any issues. Next, listen for the pump's operation by turning the ignition key to the "ON" position without starting the engine; you should hear a humming sound from the fuel tank. If there's no sound, use a multimeter to test for voltage at the pump connector. Lastly, if power is present but the pump isn't working, it likely needs replacement.