Charging System Alternator Tests - Polaris RZR 800 2013 Manual

WARNING
Never start the engine with an ammeter connected in
series. Damage to the meter or meter fuse will result.
Do not run test for extended period of time.
Do not run test with high amperage accessories.
1. Using an inductive amperage metering device, (set
to DC amps) connect to the negative battery cable.
2. With engine off, key switch and lights in the on
position, the ammeter should read negative amps
(battery discharge).
3. Shift transmission into park and start the engine.
With the engine running at idle, observe meter
readings.
4. Increase engine RPM while observing ammeter and
tachometer. Note the RPM at which the battery starts
to charge (ammeter indication is positive).
5. With lights and other electrical loads off, the "break
even" point should occur at approximately 1500 RPM
or lower.
6. With the engine running, turn the lights on and
depress the brake pedal to keep brake lights on.
7. Repeat test, observing ammeter and tachometer.
With lights on, charging should occur at or below
2000 RPM.

Charging System Alternator Tests

Three tests can be performed using a multi-meter 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
NOTE: 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
1. Measure the resistance value of each of the stator
NOTE: Any measurement other than Infinity (open)
will indicate a failed or shorted stator leg.
TEST 3: Measure AC Voltage Output of Each Stator
Leg at Charging RPM
1. Set the selector dial to measure AC Voltage.
2. Start the engine and let it idle.
3. While holding the engine at a specified RPM,
9924707 - 2013–2014 RZR 800 Service Manual
© Copyright 2013 Polaris Sales Inc.
stator legs: Y1 to Y2, Y1 to Y3, and Y2 to Y3. Each
test should measure: 0.22Ω ± 15%
Connect
Test Meter Leads
To:
Battery Charge
Y1 to Y2
Coil
Battery Charge
Y1 to Y3
Coil
Battery Charge
Y2 to Y3
Coil
legs to ground: Y1 to Ground, Y2 to Ground, Y3 to
Ground. Each test should measure: Open Line (OL)
Connect
Test
Meter Leads
To:
Battery Charge Y1, Y2, or Y3
Coil to Ground
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).
ELECTRICAL
Ohms
Reading
0.22Ω ± 15%
0.22Ω ± 15%
0.22Ω ± 15%
Ohms
Reading
Open Line
(Infinity)
10
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