Code No.U0428: Steering Wheel Sensor Data Error


caution
  • If there is any problem in the CAN bus lines, an incorrect diagnosis code may be set. Prior to this diagnosis, diagnose the CAN bus lines.
  • Whenever the ECU is replaced, ensure that the CAN bus lines are normal.
  • When the steering wheel sensor is replaced, calibrate the steering wheel sensor (Refer to GROUP 35C - On-vehicle Service ), and initialise the steering angle correction amount stored in AWC-ECU. (Item No.1: Steering angle correction amount initialisation ).

OPERATION



DIAGNOSIS CODE SET CONDITIONS



PROBABLE CAUSES



  • The CAN bus line is defective.
  • Malfunction of steering wheel sensor
  • Malfunction of AWC-ECU

DIAGNOSIS PROCEDURE

STEP 1. M.U.T.-III CAN bus diagnostics.
Use M.U.T.-III to perform the CAN bus diagnosis.

Q. Is the check result normal?
Go to Step 2.
Repair the CAN bus lines. (Refer to GROUP 54C - Troubleshooting ).

STEP 2. M.U.T.-III data list.
Item No.11: Steering wheel sensor (refer to ).

Q. Is the check result normal?
Intermittent malfunction. (Refer to GROUP 00 - How to Cope with Intermittent Malfunction ).
Replace the steering wheel sensor. (Refer to GROUP 35C - Steering Wheel Sensor ). Then go to Step 3.

STEP 3. Check whether the diagnosis code is reset.

Q. Is diagnosis code No.U0428 set?
Replace the AWC-ECU. (Refer to ). Then go to Step 4.
Intermittent malfunction. (Refer to GROUP 00 - How to Cope with Intermittent Malfunction ).

STEP 4. Check whether the diagnosis code is reset.

Q. Is diagnosis code No.U0428 set?
Return to Step 1.
This diagnosis is complete.