ASE A5 BRAKES
CERTIFICATION PRACTICE
EXAM 55 QUESTIONS
Question 1: A vehicle has a soft, spongy brake pedal immediately after a caliper and brake hose were replaced. No leaks are visible. What is the most likely cause?
Choices:
1) A seized caliper slide 2) Air trapped in the hydraulic system 3) Excessive rotor runout 4) A stuck-open proportioning valve
Correct Answer: Air trapped in the hydraulic system
Explanation: Air is compressible, so trapped air makes the pedal feel soft or spongy after the hydraulic system has been opened. The system should be bled using the manufacturer- speci�ed procedure.Page 1
Question 2: During a steady brake application at a stop, the pedal slowly sinks
toward the �oor. The �uid level is correct and no external leaks are found. Which component is most likely faulty?
Choices:
1) Parking brake cable 2) Vacuum booster check valve 3) Master cylinder 4) Metering valve
Correct Answer: Master cylinder
Explanation: A pedal that slowly sinks under constant pressure with no external �uid loss commonly indicates �uid bypassing the master cylinder piston seals internally.Question 3: After several miles of driving, all four brakes begin to drag. Loosening the master cylinder mounting nuts allows the brakes to release. What is the most likely cause?
Choices:
1) Weak brake shoe return springs 2) Air in the ABS hydraulic control unit 3) Master cylinder pushrod adjusted too long 4) Excessive rotor thickness variation
Correct Answer: Master cylinder pushrod adjusted too long
Explanation: A pushrod that is too long can prevent the master cylinder pistons from fully returning and uncovering the compensating ports. Residual hydraulic pressure then builds as the brakes heat and causes all wheels to drag.Page 2
Question 4: The left front disc brake drags after the pedal is released. Opening that caliper's bleeder screw immediately releases the brake. Which fault is most likely?
Choices:
1) A loose wheel bearing 2) Excessive left front rotor runout 3) A worn master cylinder primary cup 4) A restricted left front �exible brake hose
Correct Answer: A restricted left front �exible brake hose
Explanation: If opening the bleeder releases the brake, hydraulic pressure is being trapped upstream of the caliper. An internally restricted �exible hose can allow pressure to apply the brake but prevent quick �uid return.Question 5: A vehicle consistently pulls to the right only during braking. The right front brake is operating normally. Which condition could cause this?
Choices:
1) A restricted left front brake hose 2) A restricted right front brake hose 3) A seized right front caliper piston in the applied position 4) Grease on the right front brake pad
Correct Answer: A restricted left front brake hose
Explanation: Reduced braking force at the left front wheel allows the stronger right front brake to pull the vehicle to the right. A restricted left front hose can reduce pressure to that caliper.Page 3