Code No. C1219 Abnormality in steering wheel sensor signal


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 (Refer to GROUP 54C, Trouble code diagnosis ).

OPERATION
Steering wheel sensor outputs the signal to ASC-ECU via the CAN bus lines.

DIAGNOSIS CODE SET CONDITIONS
This diagnosis code is set if any malfunction below is found:

  • The tolerance of neutral position of steering wheel sensor exceeds the specified range.
  • Abnormality in steering wheel sensor output value
  • When abnormality is detected by comparing the value output from the steering wheel sensor with the one from the wheel speed sensor and the G and yaw rate sensor.

PROBABLE CAUSES

  • Improper installation of steering wheel sensor
  • Wheel alignment not performed
  • Steering wheel sensor malfunction
  • Different steering wheel
  • G and yaw rate sensor malfunction
  • Malfunction of wheel speed sensor
  • ASC-ECU malfunction
  • External noise interference

DIAGNOSIS PROCEDURE

STEP 1. M.U.T.-III CAN bus diagnosis
Use M.U.T.-III to diagnose the CAN bus lines.

Q. Is the check result normal?
Go to Step 3.
Repair the CAN bus lines (Refer to GROUP 54C - Troubleshooting ). On completion, go to Step 2.

STEP 2. Diagnosis code recheck after resetting CAN bus lines

Q. Is the diagnosis code No. C1219 set?
Go to Step 3.
This diagnosis is complete.

STEP 3. M.U.T.-III diagnosis code
Check that the wheel speed sensor-related, G and yaw rate sensor-related, or steering wheel sensor-related diagnosis code is set.

Q. Is the diagnosis code set?
Troubleshoot the relevant diagnosis code, and then go to Step 4.
Go to Step 4.

STEP 4. Check how steering wheel sensor is installed.
Check that the steering wheel sensor is installed correctly (Refer to ).

Q. Is the check result normal?
Go to Step 5.
Install the steering wheel sensor correctly, and then go to Step 5.

STEP 5. Wheel alignment check

Q. Is the check result normal?
Go to Step 6.
Adjust the wheel alignment, and then go to Step 6.

STEP 6. Check whether the diagnosis code is reset.

Q. Is the diagnosis code No. C1219 set?
Replace the steering wheel sensor, and then go to Step 7.
This diagnosis is complete.

STEP 7. Check whether the diagnosis code is reset.

Q. Is the diagnosis code No. C1219 set?
Replace ASC-ECU.
This diagnosis is complete.