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.
Substitute with a known-good HECU and check for proper operation. If problem is corrected, replace HECU and then go to "VERIFICATION OF VEHICLE REPAIR " procedure.
NOTE: * In a case of replacing HECU, operate following functions- "Steering Angle Sensor Calibration" for steering angle sensor offset correction (refer to C1261 STEERING ANGLE SENSOR NOT CALIBRATED ) - ESC only
- "Longituginal Sensor Calibration" for Longituginal sensor offset correction (refer to C1285 SENSOR CLUSTER CHANGE DETECTION-UNCALIBRATED ) - ESC only
NO
Fault is intermittent caused by poor connection in CAN signal harness and/or HECU's connector. Go to "VERIFICATION OF VEHICLE REPAIR " procedure.