Hydraulic Power Assist Steering (HPAS)

Steering System

The power steering system consists of the following components:

- Power steering pump
- Power steering fluid reservoir and cap
- Power steering fluid cooler
- Steering gear
- Power steering lines
- Steering wheel
- Steering column
- Steering column shaft
- Power Steering Pressure (PSP) switch

The power steering system transfers driver inputs at the steering wheel to the front wheels of the vehicle. The steering column, hydraulic system and linkages that transfer these driver inputs make up the steering system. Gearing and hydraulic assist are used to significantly reduce steering efforts.

For information on the power steering fluid reservoir, power steering pump, power steering lines and steering gear, refer to Steering.

For information on the steering wheel, steering column and steering column shaft, refer to Steering Column.