Sample ASE-Style Brake System Diagnostics Test

A vehicle pulls to the left when the brakes are applied. Which of the following is the MOST likely cause?

• A faulty right front caliper

• A faulty left front caliper

• A worn right rear brake pad

• A worn left rear brake pad

During a brake inspection, you notice uneven brake pad wear on the front axle. What could be the cause?

• Normal wear and tear

• A sticking brake caliper piston or worn guide pins

• A warped brake rotor on the rear axle

• Insufficient (low) brake fluid

Which of the following is NOT a symptom of a sticking brake caliper?

• Vibration at 55MPH+ cruising speeds

• A pulsating brake pedal

• The vehicle pulling to one side during braking

• Overheating of the affected wheel

A customer complains of a squealing noise when applying the brakes. Which of these could be the cause?

• Worn brake pads

• A warped brake rotor

• A loose brake pad

• All of the above

You are diagnosing a brake system issue. What is the FIRST step you should take?

• Check the brake fluid level and condition

• Remove the wheels and inspect the brakes

• Road test the vehicle

• Consult the vehicle's service manual

Which tool is BEST used to measure brake rotor runout?

• Micrometer

• Dial indicator

• Caliper

• Feeler gauge

During a brake job, you notice that the brake pads are worn unevenly. What should you do?

• Inspect and Replace ONLY the worn brake pads

• Replace the brake pads and rotors on that axle

• Inspect the calipers and guide pins for proper operation

• Recommend replacing ALL brake components, calipers and master cylinder.

What is the purpose of a brake booster?

• To increase brake pad life

• To reduce the effort required to depress the brake pedal

• To prevent wheel lockup during hard braking

• To distribute brake fluid evenly to all calipers

Which of the following is NOT a safety precaution to take when working on brake systems?

• Wear safety glasses

• Use proper lifting equipment

• Dispose of brake fluid properly

• Work quickly to minimize downtime

What is the purpose of brake bleeding?

• To remove air from the brake lines

• To replace old brake fluid

• To adjust the brake pedal height

• To inspect brake pad thickness