Polaris R09VA17AA, Service Manual

Page: 178 / 187

8.12
ELECTRICAL
CHARGING SYSTEM
Charging System Testing
Whenever charging system problems are suspected, proceed with the following system checks:
Using a volt meter, set it to read D.C. volts,
measure the battery open circuit voltage
(across the positive and negative posts).
Is the reading 12.8 volts or more?
Meter Setting: DC Volts
With the transmission in neutral, start the
engine and increase RPM to between 3000
and 4000. Read battery voltage with the
a voltmeter. Voltage readings should start
to increase towards 13.0 V D.C.
Meter Setting: AC Volts
Disconnect the wire connector between the
regulator / rectifier and stator. Using a volt
meter perform a stator output test .
See the test procedure detailed in this chapter
Meter Setting: DC Volts
Reconnect the alternator wires. Note: Red
wire must be connected to harness. Battery
voltage must be present on red wire terminal
on harness side of voltage regulator connector.
Is it?
If all of the previous tests indicate a
good condition, but the charging voltage does
not rise above battery voltage at the
connector or terminal board, replace the
voltage regulator.
Yes
No
Yes
Yes
Remove the battery and properly
service. Reinstall the fully charged
battery or a fully charged shop battery.
No
Check for a system current draw.
Yes
Perform the resistance tests detailed
in this chapter under the
Stator / Alternator Tests. If stator
magnets, stator coils and stator
wire harness for damage. Repair or
replace any damaged components.
No
Check regulator / rectifier connections
and ground, battery connections,
main fuse and connecting wires.
Repair or replace faulty wiring or
components.
No
Was an increase noticed?
Does stator AC output meet specification?
under Stator / Alternator Tests .
tests good, inspect the flywheel
Verify condition of 15A fuse.
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