Hyundai Sonata: Description and Operation - Charging System - Engine Electrical System - Hyundai Sonata YF 2011-2019 Service ManualHyundai Sonata: Description and Operation

Description

The charging system includes a battery, an alternator with a built-in regulator, and the charging indicator light and wire.
The Alternator has built-in diodes, 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.

1. Brush
2. Dirve belt pulley
3. Rotor
4. Stator
5. Rectifier
Alternator Management System
Alternator management system controls the charging voltage set point in order to improve fuel economy, manage alternator load under various operating conditions, keep the battery charged, and protect the battery from over-charging. ECM controls generating voltage by duty cycle (charging control, discharging control, normal control) based on the battery conditions and vehicle operating conditions.
The system conducts discharging control when accelerating a vehicle. Vehicle reduces an alternator load and consumes an electric power form a battery.
The system conducts charging control when decelerating a vehicle. Vehicle increases an alternator load and charges a battery.

    Repair procedures
    On-vehicle Inspection Х Check that the battery cables are connected to the correct terminals. ...

    See also:

    Manifold Absolute Pressure Sensor (MAPS). Specifications
    Specification Pressure [kPa (kgf/cm², psi)] Output Voltage (V) 20.0 (0.20, 2.9) 0.79 46.7 (0.47, 6.77) 1.84 ...

    Troubleshooting
    Troubleshooting Symptom Suspected area Repairment Pressing power switch does not turn on system Radio receiver power source circuit ...

    Side repeater light bulb replacement
    If the light bulb is not operating, have the vehicle checked by an authorized HYUNDAI dealer. ...