Charging System Alternator Tests - Polaris RANGER 500 2017 Service Manual

ELECTRICAL
4. Shift transmission into park and start the engine.
With the engine running at idle, observe meter
readings.
5. Increase engine RPM while observing ammeter and
tachometer.
6. Note RPM at which the battery starts to charge
(ammeter indication is positive).
7. With lights and other electrical loads off, the "break
even" point should occur at approximately 1500 RPM
or lower.
8. With the engine running, turn the lights on and apply
the brake to keep brake light on.
9. Repeat test, observing ammeter and tachometer.
With lights on, charging should occur at or below
2000 RPM.
12.26
CHARGING SYSTEM ALTERNATOR
TESTS
Three tests can be performed using a multimeter to
determine the condition of the stator (alternator).
TEST 1: Resistance Value of Each Stator Leg
1. Measure the resistance value of each of the three
stator legs: Y1 to Y2, Y1 to Y3, and Y2 to Y3.
2. Each test should measure: 0.15 Ω ± 20%
CONNECT
TEST METER
LEADS TO:
Battery Charge
Y1 to Y2
Coil
Battery Charge
Y1 to Y3
Coil
Battery Charge
Y2 to Y3
Coil
NOTICE
If there are any significant variations in ohm readings
between the three legs it is an indication that one of the
three stator legs maybe weak or failed.
TEST 2: Resistance Value of Each Stator Leg to
Ground
3. Measure the resistance value of each of the stator
legs to ground: Y1 to Ground, Y2 to Ground, Y3 to
Ground.
9850043 R01 - 2017-2021 RANGER 500 / 570 Service Manual
OHMS
READING
Less than 1 Ω
Less than 1 Ω
Less than 1 Ω
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