If the fuel pump does not work, check it by performing the operations described below, and if the pump is working properly, check its electrical circuit.
Remove the rear seat and protective cover.
Turn the ignition key to the LOCK (OFF) position.
Disconnect the fuel pump unit connector. Listen to the noise of the pump operating when connecting the battery (1) to the connector (2), the fuel pump unit (+) to terminal 5, and short terminal 4 to ground.
By lightly squeezing the fuel hose with your fingers, make sure there is fuel pressure.
Connect the fuel pump connector, replace the protective cover and rear seat.
[The article is reprinted from a web resource: MitsubishiMan]