DFFT Brakes and Braking Systems

Question 1

A vehicle pulls to one side when the brakes are applied. What is the most likely cause?

Accepted Answer

Uneven brake pad wear or a seized caliper on one side

Answer

Low brake fluid level in the reservoir

Answer

Worn brake rotors on both axles

Answer

Air in the brake lines throughout the system

Question 2

A customer reports a spongy brake pedal that goes nearly to the floor. What is the most likely diagnosis?

Accepted Answer

Air in the hydraulic brake lines

Answer

Worn brake pads on the front axle

Answer

Sticking rear drum brake shoes

Answer

A loose brake caliper mounting bolt

Question 3

Brake fade occurs during repeated heavy braking. What is the primary cause of this condition?

Accepted Answer

Overheated brake pads losing friction coefficient

Answer

Low brake fluid level

Answer

Worn brake rotors below minimum thickness

Answer

A cracked brake drum

Question 4

A grinding noise is heard when the brakes are applied. What does this indicate?

Accepted Answer

Brake pads worn down to the metal backing plate

Answer

Air trapped in the brake caliper

Answer

Warped front brake rotors

Answer

Low brake fluid pressure

Question 5

A vehicle with ABS has a warning light on and the pedal pulses abnormally during normal stops. What should be checked first?

Accepted Answer

Wheel speed sensors and their wiring harness

Answer

Brake master cylinder bore condition

Answer

Brake fluid condition and boiling point

Answer

Rear brake drum adjustment

Question 6

A high-pitched squealing noise occurs whenever the brakes are lightly applied. What is the most likely cause?

Accepted Answer

Brake pad wear indicators contacting the rotor

Answer

A warped brake rotor causing vibration

Answer

Air in the front brake calipers

Answer

Brake fluid contaminated with moisture