Title: Diagnose pressure concerns in the brake system using hydraulic principles (Pascal’s law).
Course: Automotive Technology III (20104-III) > Section: Brakes: Hydraulic System Diagnosis and Repair

Diagnosis should include checking

- metering process
- pressure differential and proportion valves
- master cylinder
- hydraulic hoses and lines and wheel brakes.

ASE Education Foundation
2017 Automobile Service Technology (AST) Level
V. Brakes
B. Hydraulic System Diagnosis and Repair
Task 1

Process/Skill Questions:

- What is Pascal's law?
- How does Pascal's law apply to the brake system?
- What are the differences between input piston size and output piston size?