[Previous][Next]
DTC C1219: Steering Wheel Sensor Signal
 
 
caution
  • If there is any problem in the CAN bus lines, an incorrect DTC may be stored. 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: SAS adjusted value ).
  • When hydraulic unit (integrated with G and yaw rate sensor) is replaced, calibrate G and yaw rate sensor (refer to GROUP 35C - On-vehicle Service )
 
 
OPERATION
AWC-ECU receives steering wheel data from the steering wheel sensor via CAN communication.
 
 
DTC SET CONDITIONS
This DTC is stored when the abnormality below is detected:
  • The tolerance of neutral position of steering wheel sensor exceeds the specified range.
  • Abnormality in steering wheel sensor output value
  • Incorrect installation is detected by the initial check of the steering wheel sensor signal.
  • Abnormality is detected by a comparison of output value from the steering wheel sensor with the output values from wheel speed sensor and G and yaw rate sensor.
 
 
PROBABLE CAUSES
  • Improper installation of steering wheel sensor
  • Malfunction of steering wheel sensor
  • Malfunction of G and yaw rate sensor
  • Malfunction of wheel speed sensor
  • Malfunction of AWC-ECU
  • Vehicle straight-ahead position and steering wheel neutral position is not matched.

 
 
DIAGNOSTIC PROCEDURE
STEP 1. Scan tool (M.U.T.-III) CAN bus diagnostics.
Use scan tool (M.U.T.-III) to perform the CAN bus diagnosis.
Is the check result normal?
Go to Step 3.
Repair the CAN bus lines (Refer to GROUP 54C - Diagnosis, Can Bus Diagnostics Table ). After repairing the CAN bus line, go to Step 2 .
 
STEP 2. Check whether the DTC is stored again.
Is DTC No.C1219 stored?
Go to Step 3.
This diagnosis is complete.
 
STEP 3. Scan tool (M.U.T.-III) DTC.
Is DTC No.C2205 stored?
Perform the relevant troubleshooting.
Go to Step 4.
 
STEP 4. Scan tool (M.U.T.-III) DTC.
Check if the wheel speed sensor-related, G and yaw rate sensor-related, or steering wheel sensor-related DTC is stored.
Is the DTC stored?
Carry out the appropriate troubleshooting. Then go to Step 9.
Go to Step 5.
 
STEP 5. Check of steering wheel sensor installation status
Check that the steering wheel sensor is installed correctly (Refer to GROUP 35C - Steering Wheel Sensor ).
Is the check result normal?
Go to Step 6.
Install the steering wheel sensor correctly. Then go to Step 6.
 
STEP 6. Wheel alignment check
Is the check result normal?
After checking the wheel alignment, 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 (Refer to ). Then, go to Step 7.
After adjusting the wheel alignment, 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 (Refer to ). Then, go to Step 7.
 
STEP 7. Scan tool (M.U.T.-III) data list.
Check the following data list (Refer to ).
  • Item No.8: Steering angle sensor
Is the check result normal?
Go to Step 8.
Replace the steering wheel sensor (Refer to GROUP 35C - Steering Wheel Sensor ). Then, go to Step 9.
 
STEP 8. Check whether the DTC is stored again.
Is DTC No.C1219 stored?
Replace the AWC-ECU (Refer to ). Then, go to Step 9.
Intermittent malfunction (Refer to GROUP 00 - How to Cope with Intermittent Malfunction ).
 
STEP 9. Check whether the DTC is stored again.
Is DTC No.C1219 stored?
Return to Step 1.
This diagnosis is complete.