ASC

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.
^ 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. M.U.T.-III CAN bus diagnostics
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. 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.