Testing Voltage Drop - Polaris 850 MATRYX INDY XC 129 2021 Manual

4. Connect your red lead to the battery negative cable
terminal.
5. Connect your black lead to the battery negative post.
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.
9850064 R03 - 2021 650 / 850 Matryx Trail Performance / Crossover Snowmobile Service Manual
© Copyright Polaris Inc.
GENERAL INFORMATION

TESTING VOLTAGE DROP

NOTICE
If you disconnect the connector at the load, and
measure voltage with one lead on the power supply
wire, and one to ground, you will be measuring
available voltage. This is a static test and not dynamic
voltage drop testing. Refer to Static and Dynamic
Testing page 1.76.
The measurement of voltage is the DIFFERENCE in
electrical pressure between the two points your DMM
leads are touching.
Most circuits will have one load. The load is the
component in the circuit that uses the current flow to do
work, such as move a solenoid or light a bulb.
Voltage coming into the load should be near battery
voltage with current flowing. There will be some loss from
moving through electrical contacts in connectors and
relays, but it will be minimal.
NOTICE
You will need to backprobe to perform this test. For
information about doing this safely, refer to Connector
Probing Guidelines page 1.77.
Voltage should be near fully depleted by the load. This
means that when measuring on the ground side of the
circuit, immediately after the load, back to battery
negative, you should have near zero pressure difference
(voltage).
If you do have a difference in pressure, this means there
is something adding resistance to the circuit such as
corrosion.
For a video demonstration, scan the QR code below, or
right click it and select "open in new tab".
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