Hyundai Accent (HC): Charging System / Troubleshooting

- Troubleshooting

   

• Be careful not to short-circuit the wiring by the body or other wirings.

• In case of discharging problem, measure dark current at all times.(Refer to Charging System - "Dark Current Inspection")

• When checking the alternator main fuse, perform continuity test and voltage test between terminals as well as visual check to confirm normal operation.

• When checking the ground, repair or replace after inspecting for defective ground cable, defective installation or defective contact due to foreign object.

• It is not recommended to use non-authentic parts as installing non-authentic parts may cause malfunction of charging system.

• Be careful as misassembly may cause short-circuit of wiring, which may result in battery discharge.

• As it will reset and appear as normal if the battery negative (-) terminal is disconnected while measuring dark current, measure by using a hook meter without disconnecting the negative (-) terminal.

• Note that there may be various phenomenons / possible causes / repair measures apart from above.

• For more effective repairs, refer to DTC guide and ETM.

SymptomSuspected AreaRemedy
Charging warning lamp does not turn on during IG ON.Broken alternator main fuseInspect / Repair / Replace fuse.
Broken instrument cluster fuseInspect / Repair / Replace fuse.
Broken instrument cluster internal bulbInspect / Repair / Replace instrument cluster.
Defective connection of wiring connectorInspect / Repair / Replace wiring connection.
Defective voltage regulator or alternatorInspect / Repair / Replace voltage regulator or alternator.
Defective connection of battery terminalInspect tightening of (+) and (-) battery terminals to specified torque.
Communication errorInspect wiring between regulator and ECM.
Inspect transmission signal of ECM.
Inspect / Repair / Replace alternator if the wiring and ECM are normal.
Charging warning lamp does not turn off during engine running.Worn drive belt or lack of tensionInspect / Repair / Replace drive belt.
Defective connection, corroded or worn battery cableInspect connection of battery cable and Inspect / Repair / Replace cable.
Broken alternator main fuseInspect / Replace alternator main fuse or battery cable.
Defective voltage regulator or alternatorInspect / Replace voltage regulator or alternator.
Defective wiringInspect / Replace wiring.
Defective instrument clusterInspect / Replace instrument cluster
Slip in alternator pulleyInspect / Replace alternator pulley.
Adjust tension / Replace drive belt.
Defective connection of battery terminalInspect tightening of (+) and (-) battery terminals to specified torque.
Charging warning lamp turns on.Slip, worn or lack of tension in drive beltAdjust tension / Replace drive belt.
Inspect / Replace auto tensioner (only for auto tensioner type).
Error in Alternator Management System (AMS) voltageInspect battery sensor connecting harness and connection with body.
Error in battery sensorInspect / Repair / Replace battery sensor.
Short between battery sensor wiring and bodyInspect / Repair / Replace battery sensor.
Defective alternator L terminal output powerInspect / Repair / Replace alternator or regulator.
Degradation due to defective contact of battery (+) terminalCheck tightening to specified torque / Inspect / Repair / Replace battery wiring.
Short in alternator connecting extension connector internal pinInspect / Repair / Replace wiring.
Short circuit between body and mission groundInspect / Repair / Replace ground.
Communication errorInspect / Repair / Replace wiring between regulator and ECM.
Inspect transmission signal of ECM.
Inspect / Repair / Replace alternator if wiring and ECM are normal.
Short in the middle of connection to alternator L terminal
(L terminal applied vehicle model)
Inspect / Repair / Replace wiring.
Drive belt rotation stops due to slip in crankshaft damper pulley or defective pulley.Inspect or replace crankshaft damper pulley / Inspect, repair or replace drive belt tensioner bearing.
Slip, worn or lack of tension in drive beltAdjust tension / Inspect / Repair / Replace drive belt.
Defective voltage regulatorInspect / Repair / Replace voltage regulator.
Defective alternatorInspect / Repair / Replace alternator.
Broken alternator main fuseInspect / Repair / Replace alternator main fuse or battery wiring cable.
Defective groundInspect / Repair / Replace ground.
Discharged batteryAdjust tension / Inspect / Repair / Replace drive belt.
Inspect / Repair / Replace wiring connection.
Inspect / Repair / Replace alternator main fuse.
Inspect / Repair / Replace alternator.
Inspect / Repair / Replace voltage regulator.
Inspect / Repair / Replace battery unit.
Inspect for dark current / Repair / Replace.
Learn / Inspect / Repair / Replace battery sensor.
Inspect for short / Repair / Replace battery cable.
Inspect / Repair / Replace ECM.
Inspect / Repair / Replace body electrical related parts.
Inspect / Repair / Replace installation status of alternator connector.
Inspect / Repair / Replace tightening of (+) and (-) battery terminals to specified torque.
Swollen batteryDefective batteryInspect / Replace battery.
Defective voltage regulator or alternatorInspect / Repair / Replace voltage regulator or alternator.
Defective charging related parts or wiringInspect / Repair / Replace charging related parts and wiring.
After inspection, repair or replace related parts in case of malfunction.

Other information:

Hyundai Accent (HC) (2017 - 2022) Service Manual: Troubleshooting

- Troubleshooting Trouble symptomSuspect areaRemedy  Clutch slipping • Car will not respond to engine speed during acceleration • Insufficient vehicle speed • Lack of power during uphill driving  Insufficient pedal free playAdjust Clogged hydraulic systemCorrect or replace parts Excessive wear of clutch disc facingReplace Hardened clutch disc facing, or oil on surfaceReplace Damaged pressure plate or flywheelReplace Weak or broken pressure springReplace Diff

Hyundai Accent (HC) (2017 - 2022) Service Manual: Description and Operation

- Description The SMART KEY system is a system that allows the user to access and operate a vehicle in a very convenient way. To access the vehicle, no traditional key or remote control unit is needed.The user carries a SMART KEY FOB which does not require any conscious actions by the user (e.g. operate a RKE button). The SMART KEY system is triggered by pressing a push button in the door handle.

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