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Home >> Kia >> 2012 >> Optima LX, Automatic Trans >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System Diagnosis (3 Of 3) - 2.4L - Except HEV >> DTC P0620: Alternator Control Circuit >> Scantool Diagnostics >> 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: Monitoring Alternator Duty Cycle, PWM Signal Parameter On GDS
    G07386740Courtesy of KIA MOTORS AMERICA, INC.
  4. Are the parameters displayed correctly?

    YES 

    • Fault is intermittent caused by poor contact in the sensor's and/or PCM's connector or was repaired and PCM 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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