2005 Polaris Sportsman 700/800 EFI Service Manual, Page 126Get this manual
FUEL SYSTEMFUEL INJECTION 2Turn on the key switch to activate the pump and check the system pressure on the gaugeIf system pressure of 39 psi is observed, the ignition switch, ECU, fuel pump, and pressure regulator are working properlyTurn the key switch off and depress the valve button on the tester to relieve the system pressureG If the pressure is too high or too low, replace the fuel pump assembly3If the pump did not activate (step 2), disconnect the plug from the fuel pumpConnect DC voltmeter across terminals 'A' and 'C' in the plug, turn on the key switch and observe if minimum of volts is presentIf voltage is between and 14, turn key switch off and connect an ohmmeter between the terminals 'A' and 'C' on the pump to check for continuityG If there was no continuity between the pump terminals, replace the fuel pumptank assemblyG If the voltage was below Vdc, test the battery, ignition switch, wiring harness, LoadshedRelay, and ECU4If voltage at the plug was good, and there was continuity across the pump terminals, reconnect the plug to the pump, making sure you have good, clean connectionsTurn on the key switch and listen for the pump to activateG If the pump starts, repeat steps and to verify correct pressureG If the pump still does not operate, check for correct ECU operation by plugging in knowngood ECUG If the pump still does not operate, replace the pumptank assembly3Remove the gas tank cover vent hoseBe sure to properly route the vent hose upon reassembly