Component Inspection

IG "OFF".
IG "ON".
Connect GDS and select "Diagnostic Trouble Codes (DTC)" mode.
Using a GDS, Clear DTC.
Select "Diagnostic Trouble Codes (DTC)" mode again.
Are any DTCs present?
YES
- Substitute with a known-good IBAU and check for proper operation. If problem is corrected, replace IBAU and then go to "Verification of Vehicle Repair " procedure.
  NOTE:
  * In a case of replacing IBAU, perform following functions
  1. "Steering Angle Sensor Calibration" for steering angle sensor offset correction (refer to C126104 ) - ESP (ESC) only
  2. "Longitudinal Sensor Calibration" for Longitudinal sensor offset correction (refer to C128504 ) - ESP (ESC) only
  3. "Variant Coding" for option coding (refer to C170204 )
NO
- Fault is intermittent caused by faulty IBAU or was repaired and IBAU memory was not cleared. go to "Verification of Vehicle Repair " procedure.