2005 Polaris Sportsman 700/800 EFI Service Manual, Page 276Get this manual
ELECTRICAL TEST 3: Measure AC Voltage Output of Each Stator Leg at Charging RPM 1Set the selector dial to measure AC Voltage2Start the engine and let it idle3While holding the ATV at specified RPM, separately measure the voltage across each 'leg' of the stator by connecting the meter leads to the wires leading from the alternator (Y1 to Y2, Y1 to Y3, Y2 to Y3)4Refer to the table below for approximate Voltage AC readings according to RPMTest each leg at the specified RPM in the tableExample: The alternator current output reading should be approximately 18 Vac at 1300 RPM between each 'leg'NOTE: If one or more of the stator leg output AC voltage varies significantly from the specified value, the stator may need to be replaced
These relays, located next to the ECU, assist with component operation such as the fan, fuel pump, etcThe fan relay, controlled by the ECU, operates the fanThe power relay, controlled by the ECU, turns on power for components such as the fuel pump, injectors, etc
ATV RPM Reading