Control unit sets a target motor current on {HEAD ~ the basis} of {TAIL ~ at least the steering torque} detected by the steering torque sensor 
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Control unit sets a target motor current on { HEAD ~ the basis } of { TAIL ~ at least the steering torque } detected by the steering torque sensor
OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH