Hyundai Palisade (LX2): Charging System / Troubleshooting

Hyundai Palisade (LX2) 2020-2025 Service Manual / Engine Electrical System / Charging System / Troubleshooting

Troubleshooting
Hyundai Palisade. Troubleshooting   
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Be careful not to short-circuit the wiring by the body or other wirings.
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In case of discharging problem, measure dark current at all times.
(Charging System - "Dark Current Inspection").
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When checking the alternator main fuse, perform continuity test and voltage test between terminals as well as visual check to confirm normal operation.
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When checking the ground, repair or replace after inspecting for defective ground cable, defective installation or defective contact due to foreign object.
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It is not recommended to use non-authentic parts as installing non-authentic parts may cause malfunction of charging system.
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Be careful as misassembly may cause short-circuit of wiring, which may result in battery discharge.
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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.
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Note that there may be various phenomenons / possible causes / repair measures apart from above.
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For more effective repairs, refer to DTC guide and ETM.
Symptom
Suspected Area
Remedy
Charging warning lamp does not turn on during IG ON.
 Broken alternator main fuse
 Inspect / Repair / Replace fuse.
Broken instrument cluster fuse
 Inspect / Repair / Replace fuse.
Broken instrument cluster internal bulb
 Inspect / Repair / Replace instrument cluster.
Defective connection of wiring connector
 Inspect / Repair / Replace wiring connection.
Defective voltage regulator or alternator
 Inspect / Repair / Replace voltage regulator or alternator.
Defective connection of battery terminal
 Inspect tightening of (+) and (-) battery terminals to specified torque.
Communication error
 Inspect 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 tension
 Inspect / Repair / Replace drive belt.
Defective connection, corroded or worn battery cable
 Inspect connection of battery cable and Inspect / Repair / Replace cable.
Broken alternator main fuse
 Inspect / Replace alternator main fuse or battery cable.
Defective voltage regulator or alternator
 Inspect / Replace voltage regulator or alternator.
Defective wiring
 Inspect / Replace wiring.
Defective instrument cluster
 Inspect / Replace instrument cluster
Slip in alternator pulley
 Inspect / Replace alternator pulley.
Adjust tension / Replace drive belt.
Defective connection of battery terminal
 Inspect tightening of (+) and (-) battery terminals to specified torque.
Charging warning lamp turns on.
 Slip, worn or lack of tension in drive belt
 Adjust tension / Replace drive belt.
Inspect / Replace auto tensioner (only for auto tensioner type).
Error in Alternator Management System (AMS) voltage
 Inspect battery sensor connecting harness and connection with body.
Error in battery sensor
 Inspect / Repair / Replace battery sensor.
Short between battery sensor wiring and body
 Inspect / Repair / Replace battery sensor.
Defective alternator L terminal output power
 Inspect / Repair / Replace alternator or regulator.
Degradation due to defective contact of battery (+) terminal
 Check tightening to specified torque / Inspect / Repair / Replace battery wiring.
Short in alternator connecting extension connector internal pin
 Inspect / Repair / Replace wiring.

Short circuit between body and mission ground
 Inspect / Repair / Replace ground.
Communication error
 Inspect / 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 belt
 Adjust tension / Inspect / Repair / Replace drive belt.
Defective voltage regulator
 Inspect / Repair / Replace voltage regulator.
Defective alternator
 Inspect / Repair / Replace alternator.
Broken alternator main fuse
 Inspect / Repair / Replace alternator main fuse or battery wiring cable.
Defective ground
 Inspect / Repair / Replace ground.
Discharged battery
 Adjust 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 battery
 Defective battery
 Inspect / Replace battery.
Defective voltage regulator or alternator
 Inspect / Repair / Replace voltage regulator or alternator.
Defective charging related parts or wiring
 Inspect / Repair / Replace charging related parts and wiring.
After inspection, repair or replace related parts in case of malfunction.

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

    Specifications Specification Item Specification Rated voltage 13.5V , 180A Speed in use 1,500 - 18,000rpm Voltage regulator IC Regulator built in type Default regulated voltage (V) [COM terminal] 14.

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