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Home › Genesis › 2021 › G90 3.3T Premium, AWD › Repair and Diagnosis › Engine Performance › System › Engine Control System Diagnosis - 3.3L (7 Of 9) › DTC P0A1A-00: Generator Control Module › Component Inspection

Component Inspection

  1. Replace alternator.
  2. Turn off the ignition switch.
  3. Connect GDS to Data Link Connector (DLC).
  4. Clear DTC and Test-drive under Enable Conditions above-mentioned.
  5. Check the "DTC".
  6. Does the GDS show DTC "P0A1A"?

    YES 

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

    NO 

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