2021 Kia Rio LXFACTORY OEM SERVICE PROCEDURE

Component Inspection

Inspection Procedure 

  1. Ignition "OFF".
  2. Connect KDS to Data Link Connector (DLC).
  3. Ignition "ON".
  4. Monitor "Diagnostic Trouble Codes (DTC)" with KDS.
  5. Clear any DTCs stored in the system with KDS.
  6. Re-check DTC in the system with KDS.
  7. Did the same DTC is stored in the system?

    Good 

    • Fault might be intermittent and caused either by poor contact in connectors or wiring harness, or it has been repaired and control module memory is not cleared yet. Thoroughly check terminal of battery, all connectors (and connections) for looseness, bending, corrosion, contamination, deterioration, and/or damage.
    • Repair or replace as necessary and then go to "VERIFICATION OF REPAIR " procedure.

    No Good 

    • Carefully re-do this troubleshooting guide steps.
    • If problem still occurs, replace ECM/PCM and then go to "VERIFICATION OF REPAIR " procedure.
Factory Service Tools

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.

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