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Home >> Hyundai >> 2018 >> Kona Limited, FWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 151 (Engine Control System Diagnosis - 2.0L (3 Of 3)) >> DTC P0620-00: Alternator Control Circuit >> Component Inspection >> Generator Check

Generator Check

WARNING: This page is about a different car, the 2021 Hyundai Kona. However, it is still accessible from the selected car via links, so may be relevant.
  1. Turn the ignition switch "OFF".
  2. Check the tension of Generator belt.
  3. Check Battery and Generator terminals for corrosion, damage or looseness.
  4. Start the engine.
  5. Operate electrical parts (Head lamp, Defogger, etc.).
  6. Measure the voltage at engine speed 2000 RPM.

    Specification:  Approx 12.5V ~ 14.5V

  7. Is the measured voltage within specification?

    YES 

    • Many malfunctions in the electrical system are caused by poor harness (es) and terminals. Faults can also be caused by interference from other electrical systems, and mechanical or chemical damage. So, check poor connections and the related circuit between PCM and component thoroughly. Repair as necessary and go to "VERIFICATION OF VEHICLE REPAIR " procedure.

    NO 

    • Substitute with a known-good Generator and check for proper operation. If the problem is corrected, replace Generator and go to "VERIFICATION OF VEHICLE REPAIR " procedure.
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