Subsection 04 (CHARGING SYSTEM)
CHARGING SYSTEM
SERVICE TOOLS – OTHER SUPPLIER
Description
Part Number
Page
EXTECH INDUCTIVE AMMETER ..................................................
............................................. 2
NAPA ULTRA PRO BATTERY LOAD TESTER ...............................
95260
......................................... 2–4
GENERAL
SYSTEM DESCRIPTION
The purpose of the charging system is to keep the
battery at a full state of charge.
NOTE:
For an overview of the vehicle electrical
system, refer to
ENGINE MANAGEMENT SYS-
TEM
section.
Magneto
The magneto is the primary source of electrical
energy. It transforms a magnetic field into electric
current (AC).
The alternating current is regulated and trans-
formed into direct current (DC) by the voltage
regulator, and normally powers all of the vehicle's
systems and accessories.
The magneto has a 3 phase delta wound stator.
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TYPICAL
Voltage Regulator
The regulator receives AC current from the mag-
neto and transforms it into direct current (DC).
The voltage regulator output voltage is distributed
as follows:
– Fuse links
– Battery.
The voltage regulator limits voltage to prevent any
damage to electrical components.
COMPONENT
VOLTAGE Vdc
Minimum 12.5
Voltage Regulator
Maximum 15
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TYPICAL
Battery
The battery supplies DC power to every electri-
cal 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's output as required, and helps to main-
tain a steady system voltage.
TROUBLESHOOTING
It is good practice to check for fault codes using
the B.U.D.S. software as a first troubleshooting
step. Refer to
DIAGNOSTIC AND FAULT CODES
subsection.
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