Charging System; Current Draw - Key Off - Polaris RZR PRO XP 2020 Service Manual

ELECTRICAL

CHARGING SYSTEM

CURRENT DRAW - KEY OFF

Parasitic draw is when there is excessive current flow
with the key off.
While the most common causes of draws are improperly
installed accessories (tapping into un-switched B+
instead of switched) there can be electronic component
failures that can cause this as well.
IMPORTANT
Do not connect or disconnect the battery cable, or
ammeter with the engine running. Damage will occur to
electrical components.
IMPORTANT
Charging system damage will occur if incompatible
components are installed. Always reference the Polaris
Electronic Parts Catalog for the proper part numbers.
NOTICE
Wait ten minutes with the key off for the ECU to power
down. This will avoid a faulty readout while testing
amperage draw.
TESTING PROCEDURE
1. Remove the negative cable from the battery.
2. Connect a jumper from the negative battery cable
terminal to the negative battery post.
3. Ensure your meter leads and selector dial are set to
measure amperage.
4. Connect your red lead to the battery negative cable
terminal.
5. Connect your black lead to the battery negative post.
12.20
6. Momentarily key the ignition switch on, then off.
IMPORTANT
Ensure all electrical components are switched off, or
damage to your jumper and/or meter will occur.
7. Wait 10 minutes before checking the value. Vehicles
will vary, but electronic components will take time to
fully go to sleep after switched power is removed.
8. Maximum allowable is 10 milliamps. If your meter is
ranged to the 10 Amp scale, this will appear as 0.010
Amps.
Current Draw - Key Off:
Maximum of .01 DCA (10 mA)
9. If over 10 milliamps, go to the fuse block and start
systematically removing one fuse at a time until the
value drops, indicating the circuit that requires
attention.
CHARGING SYSTEM "BREAK EVEN"
TEST
IMPORTANT
Do not allow the battery cables to become
disconnected with the engine running. Follow the steps
below as outlined to reduce the chance of damage to
electrical components.
The "break even" point of the charging system is the
point at which the alternator overcomes all system loads
(lights, etc.) and begins to charge the battery. Depending
on battery condition and system load, the break even
point may vary slightly. The battery should be fully
charged before performing this test.
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.
9850068 R01 - 2020-2021 RZR PRO XP / XP 4 Service Manual
WARNING
© Copyright Polaris Industries Inc.