Code No. C2204 Sensor cluster internal error



caution
  • If there is any problem in the CAN bus lines, an incorrect diagnosis code may be stored. 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.

OPERATION


The ASC-ECU communicates with its integrated G and yaw rate sensor.

DIAGNOSIS CODE SET CONDITIONS


This diagnosis code will be stored when the ASC-ECU detects an defective G and yaw rate sensor.
note This diagnosis code may be stored when G and yaw rate sensor is put on the turntable turning at high speed.

PROBABLE CAUSES



  • ASC-ECU malfunction

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 - CAN Bus Diagnostics Table ). On completion, go to Step 2.

STEP 2. Diagnosis code recheck after resetting CAN bus lines


Q. Is diagnosis code No.C2204 stored?

Go to Step 3.
This diagnosis is complete.

STEP 3. Check whether the ASC-ECU is installed properly.


Check whether the ASC-ECU is installed correctly. Refer to .

Q. Is the check result normal?

Execute "Lateral G sensor calibration" on "Special function." After the calibration is performed (Refer to ), turn the ignition switch from "OFF" to "ON". Then go to Step 4.
Install the ASC-ECU properly, and execute "Lateral G sensor calibration" on "Special function". After the calibration is performed (Refer to ), turn the ignition switch from "OFF" to "ON". Then go to Step 4.

STEP 4. M.U.T.-III data list


Check the following data list (Refer to ).

  • Item 08: Lateral G sensor
  • Item 12: Yaw rate sensor
  • Item 73: Lateral G sensor offset
  • Item 97: Yaw rate sensor offset

Q. Is the check result normal?

Go to Step 5.
Replace the hydraulic unit (integrated with ASC-ECU) (Refer to ), and then go to Step 6.

STEP 5. Check whether the diagnosis code is stored again.


(1)Erase the diagnosis code.
(2)Turn the steering wheel to either right or left at 20 km/h or more.
note The 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.

Q. Is diagnosis code No.2204 stored?

Replace the hydraulic unit (integrated with ASC-ECU) (Refer to ), and then go to Step 6.
Intermittent malfunction (Refer to GROUP 00 - How to Use Troubleshooting/How to Cope with Intermittent Malfunctions ).

STEP 6. Check whether the diagnosis code is stored again.


(1)Erase the diagnosis code.
(2)Turn the steering wheel to either right or left at 20 km/h or more.
note The 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.

Q. Is diagnosis code No.2204 stored?

Return to Step 1.
This diagnosis is complete.