Steering Angle Sensor Malfunction

DTC C0071 STEERING ANGLE SENSOR MALFUNCTION
DTC DETECTING CONDITION: Defective steering angle sensor
TROUBLE SYMPTOM:
^ ABS does not operate.
^ VDC does not operate.

NOTE:
^ Warning light does not illuminate though problem is detected.
^ The ABS and VDC operate normally if voltage returns.
WIRING DIAGRAM:

Step 1-Step 6: