2009-2010 Polaris RZR Factory Service Manual, Page 342Get this manual
ELECTRICAL Charging System Alternator Tests
Three tests can be performed using multi-meter to determine the condition of the stator (alternator)TEST 3: Measure AC Voltage Output of Each Stator Leg at Charging RPM 123Set the selector dial to measure AC VoltageStart the engine and let it idleWhile holding the engine 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)Refer to the following table for approximate AC Voltage 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'TEST 1: Resistance Value of Each Stator Leg 1Measure the resistance value of each of the three stator legs: Y1 to Y2, Y1 to Y3, and Y2 to Y3Each test should measure: 0.19 15 Test Battery Charge Coil Battery Charge Coil Battery Charge Coil Connect Meter Leads To: Y1 to Y2 Y1 to Y3 Y2 to Y3 Ohms Reading 0.19 0.19 0.19 15 15 15 NOTE: If one or more of the stator leg output AC voltage varies significantly from the specified value, the stator may need to be replacedRPM Reading 1300 3000 5000 AC Voltage (VAC) Reading 18 VAC 25 42 VAC 25 64 VAC 25