LEMON Manuals: Even more car manuals for everyone: 1960-2025
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
April 5, 2026: LEMON Manuals is launched! Read the announcement.

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.
scientia non olet · About LEMON Manuals