Advanced Brakes Test

A vehicle exhibits a "spongy" brake pedal. Which of the following is the *most* likely cause?

• Worn brake pads

• A faulty master cylinder

• Air in the hydraulic system

• A seized caliper piston

During an ABS self-test, you hear a clicking or grinding noise. This is:

• A sign of a faulty ABS module.

• Normal operation.

• An indication of low brake fluid.

• A problem with the wheel speed sensors.

A vehicle pulls to one side during braking. Which of the following could be the cause?

• Unevenly worn brake pads

• A restricted brake hose

• A faulty proportioning valve

• All of the above

Which of the following is a function of a brake proportioning valve?

• To increase hydraulic pressure to the rear brakes.

• To decrease hydraulic pressure to the rear brakes during heavy braking.

• To ensure equal braking force at all four wheels.

• To regulate brake fluid temperature.

What is the purpose of a residual pressure valve in a brake system?

• To maintain a small amount of pressure in the lines to prevent air entry.

• To regulate pressure to the front brakes.

Technician A says that disc brake rotors should always be replaced in pairs. Technician B says that brake drums should always be replaced in pairs. Who is correct?

• Technician A only

• Technician B only

• Both Technician A and Technician B

• Neither Technician A nor Technician B

Which of the following is a common symptom of a failing brake booster?

• A low brake pedal

• Excessive brake pedal travel

• Hard brake pedal

• Brake fluid leaks

What is the function of Electronic Stability Control (ESC) in relation to the braking system?

• It modulates brake pressure at individual wheels to help maintain vehicle control.

• It prevents the wheels from locking up during braking.

• It increases brake pressure in emergency situations.

• It monitors brake pad wear.

A customer complains of a pulsating brake pedal. What is the most likely cause?

• Warped brake rotors

• A faulty ABS module

• Low brake fluid

• Worn brake pads

What does the term "brake fade" refer to?

• A decrease in braking effectiveness due to overheating.

• A spongy brake pedal feel.

• A loud noise when applying the brakes.

• A vehicle pulling to one side during braking.