DTC C2541: Vehicle Dynamics Control Module Vehicle Speed Sensor

DTC detecting condition: 

When VDCcontrol module reception failure (related to vehicle speed sensor) is detected after the ignition switch is ON.

Trouble symptom: 

The steering wheel operation feels heavy.

1. CHECK DTC  .

   Read the DTC of VDC system using the Subaru Select Monitor. Ref. to BRAKE CONTROL (DIAGNOSTICS)>DIAGNOSTIC TROUBLE CODE (DTC) .

   DTC Check 

   Is a DTC related to VDC system or vehicle speed signal system displayed?

   Yes:  Perform the diagnosis according to the DTC. Ref. to BRAKE CONTROL (DIAGNOSTICS)>Diagnostic Trouble Code (DTC)>LIST .

   No:  Go to  2.

2. CHECK LAN SYSTEM  .

   Perform the diagnosis for LAN system using the Subaru Select Monitor. Ref. to LAN SYSTEM (DIAGNOSTICS)>BASIC DIAGNOSTIC PROCEDURE .

   Is DTC of CAN communication displayed?

   Yes:  Perform the diagnosis according to the DTC. Ref. to LAN SYSTEM (DIAGNOSTICS)>Diagnostic Trouble Code (DTC)>LIST .

   No:  Go to  3.

3. CHECK VEHICLE SPEED SIGNAL  .
   1. Display the data monitor [Vehicle Speed] of the power steering control module using the Subaru Select Monitor. Ref. to POWER STEERING (DIAGNOSTICS)>DATA MONITOR .

      Data Monitor 

   2. Lift up the vehicle (so that the wheels turn freely), start the engine, and raise engine speed in gear.
      CAUTION: Be careful that no one is near the spinning tires and nothing gets caught in them.
   3. Check for whether the data changes according to vehicle speed.

   Is the data in sync with the vehicle speed?

   Yes:  It is possible that temporary poor communication occurs. Clear the memory. Ref. to COMMON (diag)>CLEAR MEMORY .

   No:  Replace the steering gearbox. Ref. to POWER ASSISTED SYSTEM (POWER STEERING)>ELECTRIC POWER STEERING GEARBOX .