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Home >> Hyundai >> 2016 >> Elantra Value Edition >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System Diagnosis - 1.8L (2 Of 2) >> DTC P0620: Alternator Control Circuit >> DTC Inspection >> Monitor GDS Data
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Monitor GDS Data

  1. Connect GDS to Data Link Connector (DLC).
  2. Engine start.
  3. Monitor "Alternator duty cycle, PWM signal" parameter on GDS.
    Fig 1: Scantool Display - Alternator Duty Cycle And PWM Signal Parameter
    G10531903Courtesy of HYUNDAI MOTOR AMERICA
  4. Are the parameters displayed correctly?

    YES 

    • Fault is intermittent caused by poor contact in the sensor's and/or PCM/ECM's connector or was repaired and PCM/ECM memory was not cleared. Thoroughly check connectors for looseness, poor connection, bending, corrosion, contamination, deterioration, or damage. Repair or replace as necessary and go to "VERIFICATION OF VEHICLE REPAIR " procedure.

    NO 

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