Hyundai Elantra: 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 |
Repair procedures
Inspection
Inspecion Item
•
Battery efficiency inspection
•
Battery voltage inspection
•
Charging voltage insptection
•
General inspection
•
Terminal tighten ...
Alternator Description and Operation
Description
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 ...
Other information:
Hyundai Elantra AD (2016-2020) Service Manual: Description and Operation
Description
The Evaporative Emission Control System prevents fuel vapor
stored in fuel tank from vaporizing into the atmosphere. When the fuel
evaporates in the fuel tank, the vapor passes through vent hoses or
tubes to a canister filled with charcoal.
The canister temporarily holds the v ...
Hyundai Elantra AD (2016-2020) Service Manual: Knock Sensor (KS) Repair procedures
Removal
1.
Turn the ignition switch OFF and disconnect the battery negative (-) cable.
2.
Disconnect the knock sensor connector (A).
3.
Remove the intake manifold.
(Refer to Engine Mechanical System - "Intake Manifold")
4.
Remove the installation bolt (A), and then remove the sens ...
