9940259 R02 - 2022
RZR
PRO R / PRO R 4 Service Manual
© Copyright Polaris Industries Inc.
12.19
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.
CHARGING SYSTEM TESTING FLOW CHART
STEP
ACTION
VALUE
YES
NO
1
NOTICE
The following test is performed with the alternator at approximately 77°F
(25°C).
1. Turn OFF all accessories.
2. Turn OFF ignition.
3. Connect a carbon pile load tester to the vehicle.
NOTICE
When using a carbon pile load tester, make sure the load is turned
completely off prior to connecting a battery to prevent sparking.
4. Connect an inductive ammeter to the output circuit of the alternator.
5. Start the engine.
6. Increase the engine speed to 2,500 RPM.
7. Adjust the carbon pile so the maximum current is observed.
8. Is the current output ≥ the value specified?
Load Test Output:
≥87A
System OK
Go to STEP 3
2
1. Maintain the load test current flow value.
2. Maintain engine speed at 2,500 RPM.
3. Measure the voltage between the alternator output terminal and the
alternator metal housing.
4. Is the voltage observed equal to the specified value?
Battery Voltage
Go to STEP 7
Go to STEP 3
3
1. Maintain the load test current flow value.
2. Maintain engine speed at 2,500 RPM.
3. Measure the voltage drop from the battery negative terminal to the metal
housing of the alternator.
4. Is the voltage measured less than the specified value?
0.5 V
Go to STEP 4
Go to STEP 8
4
1. Maintain the engine speed at 2,500 RPM and the load test value on the
carbon pile.
2. Measure the voltage drop from the output terminal of the alternator to the
positive terminal on the battery.
3. Is the voltage measured less than the specified value?
0.5 V
Go to STEP 7
Go to STEP 9
5
1. Test the alternator single pink wire on the harness for voltage.
2. Is the voltage measured within the specified range?
Battery Voltage
Go to STEP 12
Go to STEP 6
6
1. Inspect for poor connections at the harness connector of the ECU.
2. Was the problem located and corrected?
–
Go to STEP 12
Go to STEP 10
7
1. Inspect for poor connections at the alternator.
2. Was the problem located and corrected?
–
Go to STEP 12
Go to STEP 11
