10 exam-style questions with answers and explanations, straight from our 1,030-question bank. Tap an answer to check yourself. When you're ready, take the scored version in the free practice test.
The A5 exam has 55 questions and runs 1 hour 15 minutes.
These 10 free A5 questions are organized by exam domain, so you can see how each part of the Automobile & Light Truck Certification - A5 Brakes blueprint is tested. Reveal the answer and explanation under each question.
A driver reports that while stopped at a long traffic light, the brake pedal slowly sinks toward the floor under steady foot pressure. The brake fluid level is correct and no external leaks are found at the master cylinder or at any wheel. Which of these is the MOST likely cause?
Correct answer: B - A leaking piston cup inside the master cylinder
A vehicle's left front brake drags and that wheel is noticeably hot after a short drive. When the technician opens the left front caliper bleeder screw, fluid sprays out under pressure and the brake immediately releases. Which component is at fault?
Correct answer: D - An internally delaminated left front brake hose
All of the following are acceptable practice when replacing a rusted section of steel brake line EXCEPT:
Correct answer: C - Joining the new section with a compression fitting and union
Two technicians are discussing hydraulic control valves. Technician A says a metering valve delays pressure to the front disc brakes until the rear drum shoes have overcome their return springs. Technician B says a proportioning valve increases pressure to the rear brakes during hard braking to shorten stopping distance. Who is correct?
Correct answer: A - Technician A only
Two technicians are discussing brake fluid. Technician A says DOT 5.1 is a silicone-based fluid. Technician B says DOT 5 fluid should not be used in a vehicle equipped with an antilock brake system. Who is correct?
Correct answer: B - Technician B only
A vehicle has brake drag at all four wheels. Which of these is the LEAST likely cause?
Correct answer: D - A restricted brake hose at one front wheel
With the engine off, a technician pumps the brake pedal until it becomes firm, then holds steady pressure on the pedal and starts the engine. The pedal stays firm and does not move. What does this indicate?
Correct answer: C - The booster is faulty or is not receiving vacuum
A diesel pickup equipped with a hydro-boost brake system has a hard brake pedal and unusually heavy steering effort. Which of these is the MOST likely cause?
Correct answer: D - A failed power steering pump or drive belt
A vehicle is equipped with an electric parking brake using motor-on-caliper actuators. Before the rear brake pads can be replaced, what must the technician do?
Correct answer: D - Place the parking brake in service mode with a scan tool
On a duo-servo drum brake assembly, how are the brake shoes correctly positioned?
Correct answer: A - The shoe with the shorter lining faces the front of the vehicle
The A5 exam also covers these domains. Drill them in the full free practice test:
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