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 ASE A Series exam has 55 questions and runs 1 hour 15 minutes.
These 10 free ASE A Series questions are organized by exam domain, so you can see how each part of the ASE Automobile and Light Truck Certification Test A5: Brakes blueprint is tested. Reveal the answer and explanation under each question.
A truck whose hydro-boost unit is supplied by the power-steering pump develops a hard brake pedal at the same moment that steering assist becomes heavy. The shared fluid level is correct and no external leak is visible. Which cause deserves priority?
Correct answer: B - A power-steering pump, belt, or supply fault
Equal hydraulic pressure is specified at the two front brakes. During a controlled application, the left-front gauge reads 900 psi and the right-front gauge reads 500 psi. Tire and friction conditions are comparable. Which conclusion is best?
Correct answer: B - The vehicle pulls left; diagnose the weaker right-front hydraulic path
A brake pedal slowly moves toward the floor while steady pressure is held. No external leak is found, and the pedal still sinks after both master-cylinder outlets are safely capped with approved plugs. The isolation test identifies:
Correct answer: C - Master-cylinder internal bypass
Rear pads are being replaced on a vehicle with caliper-mounted electronic parking-brake motors. The service information requires maintenance mode. Before compressing either piston, the technician should:
Correct answer: A - Enter maintenance mode and confirm actuator retraction
After cleaning a brake drum, a technician measures its diameter at 254.62 mm. The maximum or discard diameter marked for that drum is 254.50 mm. No cracks are present. What is the correct service decision?
Correct answer: C - Replace the drum because its diameter exceeds the discard limit
On a common duo-servo rear drum brake, the primary shoe has the shorter lining. Technician A says the primary shoe is installed toward the front. Technician B says the secondary shoe transfers force through the adjuster to the primary shoe during forward braking. Who is correct?
Correct answer: A - Technician A only
New disc-brake pads have been installed after both caliper pistons were fully retracted. Before the vehicle is moved from the service bay, which step is essential?
Correct answer: D - Pump the brake pedal until firm and verify the fluid level
During acceleration on a wet road, one drive wheel begins to spin. The traction-control lamp flashes, that wheel's brake applies briefly, and propulsion torque is reduced. The lamp turns off when traction returns, and no DTCs are present. How should this be interpreted?
Correct answer: D - The traction-control system is operating normally to limit drive-wheel spin
Immediately after an aftermarket radio is spliced into a twisted data pair, the ABS, steering, and collision-mitigation modules set U-codes and intermittently lose communication. The initial corrective action is to:
Correct answer: C - Remove the splice and restore the OEM twisted-pair wiring
On dry, level pavement, ABS activates just before the vehicle stops. All four wheel speeds agree above 5 mph, but the left-front signal drops to 0 mph at about 3 mph. No DTC is stored. What should be inspected next?
Correct answer: B - Inspect the left-front sensor air gap, encoder, bearing, and wiring
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