[Previous] [Next]

DTC C2205: Internal malfunction of steering wheel sensor


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 - Diagnostic trouble code diagnosis ).
  • 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 ).
  • When the hydraulic unit (integrated with ASC-ECU) is replaced, always carry out the calibration of the steering wheel sensor, the G and yaw rate sensor and brake fluid pressure sensor (Refer to , and ).

OPERATION
Steering wheel sensor sends its status signal to ASC-ECU.

DTC SET CONDITIONS
This DTC is set when ASC-ECU detects that the steering wheel sensor has malfunction.

PROBABLE CAUSES

  • Steering wheel sensor malfunction
  • ASC-ECU malfunction
  • External noise interference

DIAGNOSIS
Required Special Tools:
  • MB991958: Scan Tool (M.U.T.-III Sub Assembly)

    • MB991824: Vehicle Communication Interface (V.C.I.)
    • MB991827: M.U.T.-III USB Cable
    • MB991910: M.U.T.-III Main Harness A

STEP 1. M.U.T.-III CAN bus diagnostics
Use scan tool to diagnose the CAN bus lines.

Q. Is the check result normal?
Go to Step 2.
Repair the CAN bus lines (Refer to GROUP 54C - CAN Bus Diagnostic table ). On completion, go to Step 4.

STEP 2. Check whether the DTC is reset.

Q. Is DTC C2205 set?
Replace the steering wheel sensor (Refer to ), and then go to Step 3.
The procedure is complete.

STEP 3. Check whether the DTC is reset.

Q. Is DTC C2205 set?
Replace the hydraulic unit (ASC-ECU) (Refer to ), and then go to Step 4.
The procedure is complete.

STEP 4. Check whether the DTC is reset.

Q. Is DTC C2205 set?
Return to Step 1.
The procedure is complete.