STEP 1. Using scan tool MB991958, diagnose the CAN bus lines.
STEP 2. DTC recheck after resetting CAN bus lines
STEP 3. Check the other sensor-related DTC.
STEP 4. Check whether the ASC-ECU is installed properly.
STEP 5. Scan tool MB991958 data list
STEP 6. Steering wheel sensor installation check
STEP 7. Wheel alignment check
STEP 8. Scan tool MB991958 data list
STEP 9. Check whether the DTC is set again.
STEP 10. Check whether the DTC is set again.
(1) Erase the DTC.
(2) Turn the steering wheel to either right or left at 20 km/h (12 mph) or more.note | The ASC warning/operation light and the ASC OFF light may remain on until the vehicle speed reaches approx. 10 km/h (6 mph), then the steering wheel is turned to either right or left. |
Is DTC No.C123C set?
Return to Step 1. This diagnosis is complete.