Hyundai Elantra: Charging System / Alternator Schematic Diagrams

Circuit Diagram

   
COM signal - When controlling the voltage generated, the ECM sends the target voltage data to the alternator via a PWM signal.(High voltage: 4V or higher, low voltage: 2V or lower)
FR signal - The transistor activation signal inside the alternator monitors the voltage generated by the alternator to control the excitation current before it sends the FR signal to the ECM. (At certain RPM/electric loads, the FR duty can remain static. However, more often, the RPM, electric load, target voltage, etc. are always changing in the vehicle, so the FR must also change constantly)
L signal - Turns on the battery warning lamp on the dashboard when the battery charging system malfunctions. (Conditions for turning on the lamp - overcharge, over discharge, a field coil blown inside the alternator)
B+ terminal - The output voltage from the generator travels to the battery via the B+ terminal.
Alternator Components and Components Location
Components 1. OAD (Overrunning Alternator Decoupler) 2. Front Bracket3. Front Bearing4. Stator5. Rotor6. Rear Bearing7. Rear Bracket8. Brush Holder Assembly9. Through Bolt10. Rectifier Assembly11 ...

Alternator Repair procedures
Removal 1. Turn ignition switch OFF and disconnect the negative (-) battery cable. 2. Remove the drive belt. (Refer to Engine Mechanical System - "Drive Belt") 3. Disconnect the alter ...

Other information:

Hyundai Elantra AD (2016-2020) Owners Manual: Checking the Engine Coolant Level
■ 1.6 T-GDI ■ 2.0 MPI Check the condition and connections of all cooling system hoses and heater hoses. Replace any swollen or deteriorated hoses. The coolant level should be filled between the F and the L marks on the side of the coolant reservoir when the engine is cool. If the coo ...

Hyundai Elantra AD (2016-2020) Owners Manual: High Beam Assist (HBA)
The High Beam Assist (HBA) is a system that automatically adjusts the headlamp range (switches between high beam and low beam) according to the brightness of other vehicles and road conditions. Operating condition 1. Place the headlamp switch in the AUTO position. 2. Turn on the high beam b ...

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