C2205

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 Diagnostic trouble code diagnosis Diagnostic Trouble Code Descriptions).
^ 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.
^ 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.

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. Using scan tool MB991958, diagnose the CAN bus lines.
Use scan tool to diagnose the CAN bus lines.
Q: Is the check result normal?
YES: Go to Step 2.
NO: Repair the CAN bus lines (Refer to Diagnosis - CAN Bus Diagnostic Table CAN Bus Diagnostics Table). On completion, go to Step 4.

STEP 2. Check whether the DTC is reset.
Q: Is DTC C2205 set?
YES: Replace the steering wheel sensor and then go to Step 3.
NO: The procedure is complete.

STEP 3. Check whether the DTC is reset.
Q: Is DTC C2205 set?
YES: Replace the hydraulic unit (ASC-ECU), and then go to Step 4.
NO: The procedure is complete.

STEP 4. Check whether the DTC is reset.
Q: Is DTC C2205 set?
YES: Return to Step 1.
NO: The procedure is complete.