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Home >> Kia >> 2010 >> Forte EX, Standard >> Repair and Diagnosis >> Steering >> Steering Control Systems >> Power Steering DTC Diagnosis >> DTC C1604: ECU Hardware Error >> Inspection Repair >> Component Inspection
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Component Inspection

  1. Ignition "OFF".
  2. Ignition "ON" & Engine "OFF".
  3. Connect scantool and select "Diagnostic Trouble Codes (DTCs)" mode.
  4. Using a scantool, clear DTC.
  5. Select "Diagnostic Trouble Codes (DTCs)" mode again.
  6. Are any DTCs present?

    YES 

    • Substitute with a known-good steering column & EPS unit assembly and check for proper operation. If problem is corrected, replace steering column & EPS unit assembly and then go to "VERIFICATION OF VEHICLE REPAIR " procedure.

    NO 

    • Fault is intermittent, caused either by poor contact in connectors or wiring harness, or it has been repaired and the EPS CM memory was not cleared.

      Go to "VERIFICATION OF VEHICLE REPAIR " procedure.

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