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Home › Kia › 2012 › Optima SX › Repair and Diagnosis › Engine Performance › System › Engine Control System Diagnosis (3 Of 3) - 2.0L › DTC P0620: Alternator Control Circuit › Scantool Diagnostics › Monitor GDS Data

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: Screen Display - PWM Signal Parameter
    G07382758Courtesy 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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