EPS System Description - Overview
System Outline
This vehicle is equipped with electrical power steering (EPS). The driver's steering force is assisted by an electric motor at the steering column, instead of an engine-driven oil pump to generate oil pressure, so the EPS system improves engine efficiency.

The EPS control unit monitors and controls the EPS motor's assisting force to match driving conditions.
Low vehicle speeds: High power assist (for easy handling)
High speed driving: Low power assist (for stable driving)
Low speed to high speed driving: Change smoothly from high assist to low assist
Components
The EPS system mainly consists of the following parts:
The EPS control unit: Control the EPS motor
The EPS motor: Generate the assisting torque
The torque sensor: Measure the steering force applied to the steering wheel
The steering gearbox: Transmit the steering force

The EPS control unit, the EPS motor, the torque sensor are combined into the steering column.