ASE A5 Brakes Practice Test

1. A vehicle with a front disc, rear drum brake system skids, and nosedives when the brakes are first applied. Which of the following is causing this condition?

  • A. The pressure differential switch.
  • B. The metering valve.
  • C. The proportioning valve.
  • D. Aerated brake fluid.

1.

Answer A is wrong. The pressure differential switch warns the driver of a possible hydraulic leak in the system.

Answer B is correct. The metering valve delays hydraulic pressure to the front brakes and gives the system a chance to overcome rear drum spring tension. The metering valve helps achieve balanced braking.

Answer C is wrong. A proportioning valve controls pressure to the rear brakes. It's used to prevent rear-wheel lockup.

Answer D is wrong. Aerated brake fluid causes a spongy pedal and affects the front and rear brakes.

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2. The red brake warning light is illuminated on the instrument panel of a vehicle with four-wheel disc brakes. Which of these is LEAST likely to cause this warning light to illuminate?

  • A. Low brake fluid level.
  • B. Unequal brake fluid pressure.
  • C. Grounded parking brake circuit.
  • D. Loose wheel speed sensor plug.

2.

Answer A is wrong. Low fluid level illuminates the red brake light. Check the brake fluid level and the reservoir cap if there's a red warning light.

Answer B is wrong. The pressure differential switch activates the red brake warning light if there is unequal fluid pressure.

Answer C is wrong. The red warning light indicates a problem with the hydraulic system or parking brake engagement.

Answer D is correct. Answer D is correct because a loose wheel speed sensor plug would illuminate the amber warning light instead of the red brake warning light.

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3. The right brake light is inoperative when the brake pedal is depressed. All the other lights function correctly. Which of the following would cause this inoperative brake light?

  • A. The right rear bulb socket.
  • B. The right rear bulb.
  • C. The brake light fuse.
  • D. Both A and B.

3.

Answer A is wrong. Only because both answers A and B are correct. Check the bulb and the socket for proper fit and operation.

Answer B is wrong. The right rear bulb and socket should be inspected.

Answer C is wrong. The fuse protects the entire circuit. The left brake light circuit would also be inoperative if the fuse were loose or blown.

Answer D is correct. Both A and B are correct. Check the socket and the bulb for operation and resistance.

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4. The manufacturer recommends performing a burnishing procedure after brake pad installation. Technician A says to burnish brake pads make several hard high speed stops. Technician B says this process includes light application of the brake pedal and a brief cool-down period between stops. Who is correct?

  • A. Technician A
  • B. Technician B
  • C. Both A and B
  • D. Neither A or B

4.

Answer A is wrong. Technician B is correct. The procedure involves smooth, easy stops from 30 mph not hard stops from 55 mph.

Answer B is correct. The burnishing or break in procedure cures the friction materials in the pads. It provides for better braking performance.

Answer C is wrong. Technician B is correct.

Answer D is wrong. Technician B is correct.

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5. The front brake pads on a vehicle with a quick take-up master cylinder need replacement. They were recently replaced. Technician A says this is a low drag brake system. Technician B says the master cylinder quick take-up valve could be sticking. Who is correct?

  • A. Technician A
  • B. Technician B
  • C. Both A and B
  • D. Neither A or B

5.

Answer A is wrong. Both technicians are correct. This type of master cylinder is used with low drag brake calipers. It is distinguishable by a large diameter piston, and primary low pressure bore located at the back or push rod end of the master cylinder.

Answer B is wrong. The quick take up master cylinder provides more brake fluid volume to take up the additional space between the pads and the rotor. They are fuel-efficient.

Answer C is correct. Both technicians are correct.

Answer D is wrong. Both technicians are correct.

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