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Home >> Subaru >> 2013 >> Legacy Premium, Automatic CVT Trans >> Repair and Diagnosis >> External Pages >> Different car >> Section 38 (Vehicle Dynamics Control (VDC) System (Diagnostics)) >> Diagnostic Procedure with Diagnostic Trouble Code (DTC) >> DTC C0071 Steering Angle Sensor Malfunction >> Diagnostic Procedure

Diagnostic Procedure

WARNING: This page is about a different car, the 2013 Subaru Forester. However, it is still accessible from the selected car via links, so may be relevant.
DIAGNOSTIC PROCEDURE

Step Check Yes No
1 CHECK POWER SUPPLY FOR STEERING ANGLE SENSOR. 
  1. Turn the ignition switch to OFF.
  2. Disconnect the connector from steering angle sensor.
  3. Turn the ignition switch to ON.
  4. Measure the voltage between steering angle sensor and chassis ground.

    Connector & terminal 

    (B231) No. 4 (+) - Chassis ground (-): 

 Is the voltage 10 - 15 V? Go to step 2  . Repair the steering angle sensor power supply circuit.
2 CHECK GROUND CIRCUIT OF STEERING ANGLE SENSOR. 
Measure the resistance between steering angle sensor and chassis ground.
Connector & terminal 
(B231) No. 3 - Chassis ground: 		 Is the resistance less than 10 Ω? Go to step 3  . Repair ground circuit in the steering angle sensor.
3 CHECK STEERING ANGLE SENSOR. 
  1. Turn the ignition switch to OFF.
  2. Connect all connectors.
  3. Clear the memory. < Refer to CLEAR MEMORY MODE . >
  4. Perform the Inspection Mode. < Refer to INSPECTION MODE . >
  5. Read the DTC.
 Is the same DTC displayed? Go to step 4  . Go to step 5  .
4 CHECK VDCCM&H/U. 
  1. Turn the ignition switch to OFF.
  2. Replace the steering angle sensor. < Refer to STEERING ANGLE SENSOR . >
  3. Clear the memory. < Refer to CLEAR MEMORY MODE . >
  4. Perform the Inspection Mode. < Refer to INSPECTION MODE . >
  5. Read the DTC.
 Is the same DTC displayed? Replace the VDCCM only. < Refer to REPLACEMENT , VDC Control Module and Hydraulic Control Unit (VDCCM&H/U). > Go to step 6  .
5 CHECK OTHER DTC DETECTION.  Is any other DTC displayed? Perform the diagnosis according to DTC. < Refer to LIST OF DIAGNOSTIC TROUBLE CODE (DTC) . > Temporary poor contact occurs.
6 CHECK OTHER DTC DETECTION.  Is any other DTC displayed? Perform the diagnosis according to DTC. < Refer to LIST OF DIAGNOSTIC TROUBLE CODE (DTC) . > Original steering angle sensor malfunction
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