OPERATION PRINCIPLE When Steering Wheel Is In The Neutral Position

Fig 1: Hydraulic Pump Electric Power Steering System Operation Diagram (Steering Wheel In Neutral Position)

Courtesy of NISSAN NORTH AMERICA, INC.

Because the hydraulic routes open at the power steering pump, gear housing right side, gear housing left side, and reservoir tank, the hydraulic pressure applied to the right side and left side of the gear housing is equal and no steering assist force is generated.