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 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
1. "Steering Angle Sensor Calibration" for steering angle sensor offset correction (refer to C1261 ) - ESP (ESC) only
2. "Longitudinal Sensor Calibration" for Longitudinal sensor offset correction (refer to C1285 ) - ESP (ESC) only
3. "Variant Coding" for option coding (refer to C1702 )
NO
- Fault is intermittent caused by faulty HECU or was repaired and HECU memory was not cleared. go to "VERIFICATION OF VEHICLE REPAIR " procedure.