Component Inspection

Ignition "OFF"
Ignition "ON" & Engine "OFF".
Connect scantool and select "Diagnostic Trouble Codes (DTCs)" mode.
Using the scantool, clear DTC.
Select "Diagnostic Trouble Codes (DTCs)" mode again.
Are any DTCs present?
YES
- Substitute with a known-good PCM (TCM) and check for proper operation. If problem is corrected, replace PCM (TCM) and then go to "VERIFICATION OF VEHICLE REPAIR " procedure.
  If NG, replace HECU and then go to "VERIFICATION OF VEHICLE REPAIR " procedure.
  
  NOTE: In a case of replacing HECU, operate "Steering Angle Sensor Calibration" for steering angle sensor offset correction (refer to DTC C1261 ) - ESC only
NO
- Fault is intermittent, caused by faulty HECU, faulty PCM (TCM), or was repaired and HECU memory was not cleared.
  Go to "VERIFICATION OF VEHICLE REPAIR " procedure.