Operation Principle

Turning the Steering to the Left (System is Normal, and Ignition Switch is ON) 

Courtesy of NISSAN NORTH AMERICA, INC.

• In the normal state, the steering clutch is not engaged, and the steering wheel is separated from the steering gear assembly.
• If turning the steering wheel to the left, the steering angle actuator is driven, and the tire is turned to the left direction.
• The reaction force from the tires is conveyed from the steering gear assembly to the steering force control module and conveyed to the steering wheel by driving the steering force motor.

Turning the Steering to the Left (Ignition Switch is OFF, and System is Malfunctioning) 

Courtesy of NISSAN NORTH AMERICA, INC.

• The steering clutch is engaged, and the system changes to EPS mode, protection mode, or manual steering status.
• No electrical control is performed in manual steering mode.