Component Inspection

IG "OFF".
IG "ON".
Connect GDS and select "Diagnostic Trouble Codes (DTCs)" mode.
Using a GDS, Clear DTC.
Select "Diagnostic Trouble Codes (DTCs)" mode again.
Are any DTCs present?
YES
- Substitute with a known-good EPS ECU and check for proper operation.
  If the problem is corrected, replace EPS ECU and then go to "VERIFICATION OF VEHICLE REPAIR " procedure.
  
  * In a case of replacing the EPS ECU, operate "Steering Angle Sensor Calibration" by GDS in EPS system.
NO
- Fault is intermittent caused by poor connection in CAN signal harness and/or HECU's connector. Go to "VERIFICATION OF VEHICLE REPAIR " procedure.