July 1: So it begins. Don't worry, this is not in the correct legal jurisdiction!

EPS SYSTEM: System Description: Description

The EPS system controls the power steering solenoid valve with 4WAS main control unit.
The power steering solenoid valve control changes the power steering solenoid valve activation voltage according to the vehicle speed.

Fig 1: Solenoid Valve Voltage Versus Vehicle Speed Graph (Normal Operation)
Courtesy of NISSAN NORTH AMERICA, INC.