Hyundai Sonata: Charging System / Description and Operation

Hyundai Sonata LF 2014-2019 Service Manual / Engine Electrical System / Charging System / Description and Operation

Description

The charging system included a battery, an alternator with a built-in regulator, and the charging indicator light and wire.

The Alternator has eight 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 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.

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.

Charging System

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Repair procedures

On-vehicle Inpection • First of all, check for DTCs. If a DTC is present, perform troubleshooting in accordance with the procedure for that DTC. (Refer to DTC guide) ...

Other information:

Hyundai Sonata LF 2014-2019 Owners Manual: Instrument Panel Fuse Replacement
1. Turn the engine off. 2. Turn all other switches OFF. 3. Open the fuse panel cover. 4. Refer to the label on the inside of the fuse panel cover to locate the suspected fuse location. 5. Pull the suspected fuse straight out. Use the removal tool provided in the engine compartment fuses panel. 6 ...

Hyundai Sonata LF 2014-2019 Service Manual: Sunvisor Repair procedures
Replacement • When prying with a flat-tip screwdriver, wrap it with protective tape, and apply protective tape around the related parts, to prevent damage. • Use a plastic panel removal tool to remove interior trim pieces to protect from marring the surface. ...