A vehicle equipped with a hydraulic brake booster uses power steering fluid under pressure to:

Prepare for the Automotive Service Technician Period 1 exam. Study with flashcards and multiple choice questions, each question has hints and explanations. Get ready for your exam!

Hydraulic brake boosters use pressurized fluid from the power steering pump to multiply the force you apply at the brake pedal. That same hydraulic pressure also powers the steering assist, since the pump serves both systems. So the fluid under pressure is used to help both braking and steering, not to drive the wheels. This is why the correct description is that it operates the power steering system and the power brake booster.