Hyundai Sonata 1991 Shop Manual page 123

CHARGING SYSTEM
The charging system includes a battery, an alternator with a
built-in regulator, and the charging indicator light and wires. The
alternator has six built-in diodes (three positive and three
negative), each rectifying AC current to DC current. Therefore,
DC current appears at alternator "B" terminal.
In addition, the charging voltage of this alternator is regulated
by the battery voltage detection system. The main components
of the alternator are the rotor, stator, rectifier, capacitor, brushes,
bearings and V-ribbed belt pulley. The brush holder contains a
built-in electronic voltage regulator.
27Y015
Rotor
V-ribbed belt
\.fJ(;;3!-I~~
f"-4
pulley
BrUSh~~~~.f'~~:"'i:j~bj
Stator
Rectifier
_-J1Il~ifurt-~~-t'\ttl.::....
heat-sink
assembly
Electronic voltage
regulator·bu i It into //("-F=J.."",.\'~~
brush holder
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Y278AOA
CHARGING SYSTEM
GENERAL INFORMATION
TROUBLESHOOTING
Y27BBOA
Symptom Probable cause
Remedy
Charging warning Fuse blown.
Check fuses.
indicator does not
Lamp burned
Replace lamp.
light with ignition
out.
switch "ON" and Wiring connection loose.
Tighten loose connections.
engine off.
Electronic voltage regulator faulty.
Replace voltage regulator.
Charging warning Drive belt loose or worn.
Adjust tension or replace drive belt.
indicator does not
go out with engine
Battery cables loose, corroded or worn.
Repair or replace cables.
running. Fuse blown.
Check fuses.
(Battery requires
Fusible link blown.
Replace fusible link.
frequent recharging).
Electronic voltage regulator or alternator
Test alternator.
faulty.
Wiring faulty.
Repair wiring
Discharge battery.
Drive belt loose or worn.
Adjust tension or replace drive belt.
Wiring connection loose or open circuit.
Tighten loose connection or repair
wiring.
Fusible link blown.
Replace fusible link.
Poor grounding.
Repair.
Electronic voltage regulator or alternator
Test alternator.
faulty.
Battery life.
Replace battery.
Overcharge
Electronic voltage regulator faulty.
Replace voltage regulator.
Voltage sensing wire faulty.
Repair wire
27-4