S-AWC (Super All Wheel Control)

Code No.C1219: Steering Wheel Sensor System (Faulty Signal)

CAUTION:

- If there is any problem in the CAN bus lines, an incorrect diagnostic trouble 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 Testing and Inspection), and reset the steering wheel sensor correction amount stored in the AWC-ECU. (Item No. 1: SAS adjusted value S-AWC Special Function).

- Do not drop the G and yaw rate sensor or subject it to a shock.

- When G and yaw rate sensor is replaced, calibrate G and yaw rate sensor (refer to - On-vehicle Service Testing and Inspection)

OPERATION

AWC-ECU receives steering wheel data from the steering wheel sensor via CAN communication.

DIAGNOSTIC TROUBLE CODE SET CONDITIONS

This diagnostic trouble code is set 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. M.U.T.-III CAN bus diagnostics.

Use scan tool to perform the CAN bus diagnosis.

Q. Is the check result normal?

YES Go to Step 3.
NO Repair the CAN bus lines. CAN Bus Diagnostics Chart). After repairing the CAN bus line, go to Step 2.
STEP 2. Check whether the diagnostic trouble code is reset.

Q. Is diagnostic trouble code No.C1219 set?

YES Go to Step 3.
NO This diagnosis is complete.
STEP 3. M.U.T.-III diagnostic trouble code.

Q. Is diagnostic trouble code No.C2205 set?

YES Perform the relevant troubleshooting.
NO Go to Step 4.
STEP 4. M.U.T.-III diagnostic trouble code.

Check if the wheel speed sensor-related, G and yaw rate sensor-related, or steering wheel sensor-related diagnostic trouble code is set.

Q. Is the diagnostic trouble code set?

YES Carry out the appropriate troubleshooting. Then go to Step 9.
NO Go to Step 5.
STEP 5. Check of steering wheel sensor installation status

Check that the steering wheel sensor is installed correctly. Service and Repair).

Q. Is the check result normal?

YES Go to Step 6.
NO Install the steering wheel sensor correctly. Then go to Step 6.
STEP 6. Wheel alignment check

Q. Is the check result normal?

YES After checking the wheel alignment, calibrate the steering wheel sensor Testing and Inspection), and reset the steering wheel sensor correction amount stored in the AWC-ECU.(Refer to S-AWC Special Function). Then, go to Step 7.
NO After adjusting the wheel alignment, calibrate the steering wheel sensor Testing and Inspection), and reset the steering wheel sensor correction amount stored in the AWC-ECU.(Refer to S-AWC Special Function). Then, go to Step 7.
STEP 7. M.U.T.-III data list.

Item 8: Steering angle sensor (refer to Data List Reference Table).

Q. Is the check result normal?

YES Go to Step 8.
NO Replace the steering wheel sensor. Service and Repair). Then, go to Step 9.
STEP 8. Check whether the diagnostic trouble code is reset.

Q. Is diagnostic trouble code No.C1219 set?

YES Replace the AWC-ECU. (Refer to AWC-ECU Removal and Installation). Then, go to Step 9.
NO Intermittent malfunction. How to Cope With Intermittent Malfunctions).
STEP 9. Check whether the diagnostic trouble code is reset.

Q. Is diagnostic trouble code No.C1219 set?

YES Return to Step 1.
NO This diagnosis is complete.