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DTC C2205: Internal malfunction of steering wheel sensor
 
 
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 (Refer to GROUP 54C - CAN Bus Line Diagnostic Flow ).
  • 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 ).
 
 
CIRCUIT OPERATION
  • Steering wheel sensor sends its status signal to ASC-ECU.
 
 
 
DTC SET CONDITIONS
This diagnostic trouble code 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
STEP 1. Using scan tool MB991958, diagnose the CAN bus lines.
Use scan tool to diagnose the CAN bus lines.
Is the check result normal?
Go to Step 2.
Repair the CAN bus lines (Refer to GROUP 54C - CAN Bus Diagnostics Table ). On completion, go to Step 4.
 
STEP 2. Check whether the DTC is reset.
Erase the DTC.
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.
Erase the DTC.
Is DTC C2205 set?
Replace the hydraulic unit (integrated with ASC-ECU) (Refer to ), and then go to Step 4.
The procedure is complete.
 
STEP 4. Check whether the DTC is reset.
Erase the DTC.
Is DTC C2205 set?
Return to Step 1.
The procedure is complete.