Hyundai Elantra: Charging System / Description and operation
Hyundai Elantra (CN7) 2021-2025 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 (AMS) |
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.
Troubleshooting
Troubleshooting
Symptom
Suspect area
Remedy
Charging warning indicator does not light with ignition switch "ON" and engine off...
Other information:
Hyundai Elantra (CN7) 2021-2025 Service Manual: Description and operation
Warning Lamp ActivationThe airbag system control module detects the presence or absence of an airbag system when power is supplied and turns on the airbag warning lamp.1.When the airbag system is normalWhen the airbag system is normal, the airbag warning light turns on for 6 seconds and then goes out...
Hyundai Elantra (CN7) 2021-2025 Service Manual: Components and components location
Component Location1. Auto light sensor2. Head lamps3. Lighting switch (Auto)4. Rear combination lamps5. Integrated body control unit (IBU)..
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Tachometer
The tachometer indicates the approximate number of engine revolutions per minute (RPM).
Use the tachometer to select the correct shift points and to prevent lugging and/ or over-revving the engine.
NOTICE
Do not operate the engine within the tachometer's RED ZONE. This may cause severe engine damage.
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