[ Model - ECLIPSE CROSS / Year - 2018 ]
2018 / ECLIPSE CROSS / EC - Workshop Manual
35 -SERVICE BRAKES > 35C-ACTIVE STABILITY CONTROL SYSTEM (ASC) > TROUBLESHOOTING<ASC-ECU><ASC-ECU> > DIAGNOSIS CODE PROCEDURES > CODE NO. C1219: ABNORMALITY IN STEERING WHEEL SENSOR SIGNAL
Code No. C1219 Steering Angle 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 - 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.
 
 
 
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
  • Malfunction of wheel speed sensor
  • ASC-ECU malfunction
  • External noise interference
  • Wrong steering wheel is attached
 
 
 
 
DIAGNOSIS PROCEDURE
STEP 1. M.U.T.-IIISE CAN bus diagnostics
Use M.U.T.-IIISE to diagnose the CAN bus lines.
Is the check result normal?
Go to Step 3.
Repair the CAN bus lines (Refer to GROUP 54C - CAN Bus Diagnostics Table ). On completion, go to Step 2.
 
STEP 2. Diagnosis code recheck after resetting CAN bus lines
Is diagnosis code No.C1219 set?
Go to Step 3.
This diagnosis is complete.
 
STEP 3. M.U.T.-IIISE diagnosis code
Check that the wheel speed sensor-related, G and yaw rate sensor-related, or steering wheel sensor-related diagnosis code is set.
Is the diagnosis code set?
Troubleshoot the relevant diagnosis code.
Go to Step 4.
 
STEP 4. Check how steering wheel sensor is installed.
Check that the steering wheel sensor is installed correctly (Refer to ).
Is the check result normal?
Go to Step 5.
Install the steering wheel sensor correctly (Refer to ).
 
STEP 5. Wheel alignment check
Refer to GROUP 33 -On-vehicle Service/Front wheel alignment check .
Is the check result normal?
Go to Step 6.
Repair it.
 
STEP 6. M.U.T.-IIISE data list
Check the following data list (Refer to ).
  • Item 05: Steering angle sensor
Is the check result normal?
Go to Step 7.
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 7. Check whether the diagnosis code is set again.
(1) Erase the diagnosis code.
(2) Turn the steering wheel to either right or left at 20 km/h or more.
noteThe ASC warning/operation lamp and the ASC OFF lamp may remain on until the vehicle speed reaches approx. 10 km/h, then the steering wheel is turned to either right or left.
Is diagnosis code No.C1219 set?
Replace the hydraulic unit (integrated with ASC-ECU) (Refer to ).
This diagnosis is complete.