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DTC C1219 Steering Angle Sensor Signal
 
 
caution
  • If there is any problem in the CAN bus lines, an incorrect DTC may be set. Prior to this diagnosis, diagnose the CAN bus lines (Refer to GROUP 54C - CAN Bus Diagnostics Table ).
  • Whenever ECU is replaced, ensure that the CAN bus lines are normal.
  • When the steering wheel sensor is replaced, always carry out calibration to make ASC-ECU learn the neutral point (Refer to ).
 
 
OPERATION
Steering wheel sensor outputs the signal to ASC-ECU via the CAN bus lines.
 
 
 
DTC SET CONDITIONS
This DTC 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
  • Malfunction of wheel speed sensor
  • ASC-ECU malfunction
  • CAN bus lines are abnormal (External noise interference)
  • Wrong steering wheel is attached
 
 
 
 
DIAGNOSIS
STEP 1. Using scan tool (M.U.T.-IIISE), diagnose the CAN bus line.
Use scan tool (M.U.T.-IIISE) to diagnose the CAN bus lines.
Is the check result normal?
Go to Step 2.
Repair the CAN bus lines (Refer to GROUP 54C - CAN Bus Diagnostics Table ).
 
STEP 2. Using scan tool (M.U.T.-IIISE), check other system DTC.
Check that the wheel speed sensor-related, G and yaw rate sensor-related, or steering wheel sensor-related DTC is set.
Is the DTC set?
Troubleshoot the relevant DTC.
Go to Step 3.
 
STEP 3. Check for column switch assembly (integrated with steering wheel sensor) installation.
Refer to GROUP 54A - Column Switch .
Is the check result normal?
Go to Step 4.
Repair it.
 
STEP 4. Wheel alignment check.
Refer to GROUP 33 -On-vehicle Service/Front wheel alignment check .
Is the check result normal?
Go to Step 5.
Repair it.
 
STEP 5. Using scan tool (M.U.T.-IIISE), check data list.
Check the following data list (Refer to ).
  • Item No.05: Steering angle sensor
Is the check result normal?
Go to Step 6.
After the steering wheel sensor is replaced, perform the steering wheel sensor calibration to make ASC-ECU learn the neutral point again (Refer to ).
 
STEP 6. Check whether the DTC is set again.
(1) Erase the DTC.
(2) Turn the ignition switch to the "LOCK" (OFF) position.
(3) Turn the ignition switch to the "ON" position.
(4) Turn the steering wheel to either right or left at 20 km/h (12 mph) or higher.
noteThe 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 C1219 set?
Replace the column switch assembly (integrated with steering wheel sensor) (Refer to GROUP 54A - Column Switch ). Then go to Step 7.
Intermittent malfunction (Refer to GROUP 00 - How to Use Troubleshooting/How to Cope with Intermittent Malfunctions ).
 
STEP 7. Check whether the DTC is set again.
(1) Erase the DTC.
(2) Turn the ignition switch to the "LOCK" (OFF) position.
(3) Turn the ignition switch to the "ON" position.
(4) Turn the steering wheel to either right or left at 20 km/h (12 mph) or higher.
noteThe 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 C1219 set?
Replace the hydraulic unit (integrated with ASC-ECU) (Refer to ).
This diagnosis is complete.