[ Model - ECLIPSE CROSS / Year - 2018 ]
2018 / ECLIPSE CROSS / EC - Workshop Manual
23 -AUTOMATIC TRANSMISSION > 23A-CVT > TROUBLESHOOTING<S-AWC><S-AWC> > DIAGNOSIS CODE PROCEDURES > CODE NO. U0428 STEERING WHEEL SENSOR DATA MALFUNCTION
Code No.U0428: Steering Wheel Sensor Data Malfunction
 
 
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 reset the steering wheel sensor correction amount stored in the AWC-ECU (Item No. 1: Steering angle adjusted value ).
 
 
OPERATION
AWC-ECU communicates with the steering wheel sensor via the CAN bus lines.
 
 
DIAGNOSIS CODE SET CONDITIONS
The code is set when abnormality is detected in the signal received from the steering wheel sensor.
 
 
PROBABLE CAUSES
  • Malfunction of the CAN bus line
  • Malfunction of the steering wheel sensor
  • Malfunction of AWC-ECU

 
 
DIAGNOSIS PROCEDURE
STEP 1. M.U.T.-IIISE CAN bus diagnostics.
Use M.U.T.-IIISE to perform the CAN bus diagnosis.
Is the check result normal?
Go to Step 2.
Repair the CAN bus lines (Refer to GROUP 54C - Troubleshooting ).
 
STEP 2. M.U.T.-IIISE data list.
Item No.21: Steering angle (refer to ).
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 set again.
Is diagnosis code No.U0428 set?
Replace the AWC-ECU (Refer to ).
This diagnosis is complete.