Section 05 ELECTRICA L SYSTEM
Subsection 03 (CHARGING SYSTEM)
CHARGING SYSTEM
GENERAL
SYSTEM DESCRIPTION
The purpose of the charging system is to maintain
the battery at a full state of charge and to provide
the electrical system with the required electrical
power for normal vehicle operation.
Magneto
The magneto is the primary source of electrical
energy. It transforms a magnetic field into an elec-
tric current (AC).
The magneto has a 3 phase stator.
F18H1RA
TYPICAL
Voltage Regulator/Rectifier
The rectifier receives AC current from the mag-
neto and transforms it into direct current (DC).
The volt
age regulator, included in the same unit,
limits v
oltage to a maximum level to prevent any
damage t
o electrical components.
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Battery
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26-003
The battery supplies DC power to the electric
starter for cranking the engine. During engine
starting, it also supplies DC power to every elec-
trical and electronic system in the vehicle as well
as all accessories.
At low engine RPM operation and high current
load conditions, it supplements the magneto
output and helps to maintain a steady system
voltage.
INSPECTION
CHARGING SYSTEM OUTPUT
First ensure that battery is in good condition prior
to performing the following tests.
NOTE: It is good practice to check for fault codes
using the BRP diagnostic software (BUDS2) as a
first troubleshooting step. Refer to
DIAGNOSTIC
AND FAULT CODES
subsection.
Testing the Output Voltage Using
BUDS2
Connect the vehicle to the BRP diagnostic soft-
ware (BUDS2).
In BUDS2, go to:
– Measurements page
– ECM button
– Battery voltage (V)
1. Start engine.
NOTE: Connect a garden hose to cool exhaust
system. Refer to
EXHAUST SYSTEM
subsection.
2. Increase engine RPM as specified in the follow-
ing table and read voltage.
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