Hyundai Elantra (CN7): Charging System / Troubleshooting

Hyundai Elantra (CN7) 2021-2026 Service Manual / Engine Electrical System / Charging System / Troubleshooting

Troubleshooting
Symptom
Suspect area
Remedy
Charging warning indicator does not light with ignition switch "ON" and engine off.
Fuse blown
Check fuses
Light burned out
Replace light
Wiring connection loose
Tighten loose connection
Electronic voltage regulator
Disconnect the voltage regulator to see if light turns off. If light turns off, replace voltage regulator.
Charging warning indicator does not go out with engine running. (Battery requires frequent recharging)
Drive belt loose or worn
Adjust belt tension or replace belt
Battery cable loose, corroded or worn
Inspect cable connection, repair or replace cable
Electronic voltage regulator or alternator
Disconnect the voltage regulator or alternator to see if light turns off. If light turns off, replace voltage regulator.
Wiring
Repair or replace wiring
Overcharge
Electronic voltage regulator
Disconnect the voltage regulator to see if light turns off. If light turns off, replace voltage regulator.
Voltage sensing wire
Repair or replace wiring
Discharge
Drive belt loose or worn
Adjust belt tension or replace belt
Wiring connection loose or short circuit
Inspect wiring connection, repair or replace wiring
Electronic voltage regulator or alternator
Disconnect the voltage regulator or alternator to see if light turns off. If light turns off, replace voltage regulator.
Poor grounding
Inspect ground or repair
Worn battery
Replace battery

    DescriptionThe 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.

    InspectionInspecion Item• Battery efficiency inspection• Battery voltage inspection• Charging voltage insptection• General inspection• Terminal tightening state inspection• Engine/ transaxle ground state inspection• Wiring hareness ground state inspection• Electrical Specified Value Inspection• Vehicle parasitic current inspection • Inspect the battery capacityBattery Efficiency Inspection    â€¢ Check that the battery cables are connected to the correct terminals.

    Other information:

    Hyundai Elantra (CN7) 2021-2026 Service Manual: Turn Signal Lamp

    Repair procedures Removal1.Disconnect the negative (-) battery terminal.2.Remove the front bumper.(Refer to Body - "Front Bumper Cover")3.Remove the head lamp.4.Remove the bulb socket (A) and turn signal lamp bulb (B) from the lamp assembly.Replacement1.

    Hyundai Elantra (CN7) 2021-2026 Service Manual: Blower Motor

    Repair procedures Inspection1.Connect the battery voltage and check the blower motor rotation.Replacement1.Disconnect the negative (-) battery terminal.2.Disconnect the blower motor connector (A) and then remove the blower motor (B) after loosening the screws.

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