ASE A5 COMPREHENSIVE STUDY GUIDE
2026 FULL QUESTIONS AND SOLUTIONS
GRADED A+
◍ A vehicle's brake pedal fades to the floorboard resulting in vehicle creep at
stoplights. An initial inspection indicates there are no external leaks found.
Which of the following is MOST likely causing this brake pedal to fade?.
Answer: Leaking master cylinder cup seals.
◍ Two technicians are discussing traction control systems. Technician A says
if the amber TCS light flashes while driving in poor weather conditions,
there is an electrical fault in the system. Technician B says these systems
require an electric pump and accumulator. Who is correct?.
Answer: TECH B is correct. TCS systems use an electric pump and
accumulator to apply the brake on the wheel that's lost its traction.
◍ All of the following are correct about brake shoes replacement EXCPET:.
Answer: The secondary shoe has a shorter brake shoe lining
◍ Technician A says electronic stability control systems require four wheel
speed sensors. Technician B says the telltale lamp will flash when the ESC
system is activated. Who is correct?.
Answer: Both technicians are correct.
◍ Two technician are discussing ABS hydraulic modulators. Technician A
says the inlet valve is normally closed. Technician B says the outlet valve is
normally open. Who is correct?.
Answer: Neither A or B
◍ A vehicle has a low spongy brake pedal. Which of these is LEAST likely to
result in this condition?
A. Loose wheel bearings.
, B. Contaminated brake fluid.
C. Worn brake pads.
D. Air in the hydraulic system..
Answer: Answer C is correct. Low brake pads would result in a warning clip
squeal or tire pad sensor light illumination.
◍ A vehicle's brake lights are completely inoperative. Technician A says the
brake light switch may be stuck closed. Technician B says the circuit may
have shorted and blown a fuse. Who is correct?.
Answer: TECH B is correct. If both brake lights are out, start
troubleshooting with a quick check of the circuits fuse.
◍ The red brake warning light on the instrument panel illuminates only when
the brakes are applied. Which of these will result in this condition.
A. A burned brake light bulb.
B. Air in the hydraulic brake system.
C. A damaged wheel speed sensor tone ring.
D. An open in the brake switch circuit..
Answer: Answer B is correct. The red brake warning light will illuminate if
there's a loss in pressure in one of the two hydraulic brake circuits, if the
parking brake is engaged, or if the key is in the ON/RUN position.
◍ The brake of a four-wheel disc brake system are self-applying and locking
up after only a few miles of travel. Which of the following is the MOST
likely cause of this condition?.
Answer: A blocked master cylinder vent port
◍ A technician is measuring the inside diameter of a brake drum with a brake
drum micrometer. The technician should use which of the following
measurements
A. The smallest measurement.
B. A brake drum tool is not used.
C. The average of all the measurements.
D. The largest measurement..
Answer: Answer D is correct. The largest measurement is used.
, ◍ Two technicians are discussing brake backing plates. Technician A says if a
ridge has formed on the pads where the shoes rest they may be filed to
restore a smooth finish. Technician B says to apply bearing grease to reduce
brake squeak. Who is correct?.
Answer: TECH A is correct. The ridge often formed by the movement of the
brake shoe may be filed smooth.
◍ A technicien is replacing a brake hose and a damaged section of brake line
tubing. Which of the following is correct?.
Answer: Use double-walled steel tubing.
◍ The front brake pads on a vehicle with a quick take up master cylinder need
replacement. They were replaced just recently. Technician A says this is a
low drag brake system. Technician B says this could be caused by a sticking
quick take up valve. Who is correct?.
Answer: Both technicians are correct
◍ A three-function combination valve has all of these EXCEPT a:
A. Proportioning valve.
B. Metering valve.
C. Solenoid valve.
D. Brake failure light switch..
Answer: Answer C is correct. The solenoid valve is not part of the
combination valve.
◍ Which of the following input sensor are used by the traction and stability
control system?.
Answer: Yaw Rate Sensor Steering Angel Sensor Wheel Speed Sensor
◍ Technician A says to use an outside micrometer to measure rotor lateral
runout. Technician B says to use a dial indicator to measure rotor thickness.
Who is correct.
Answer: Neither A or B
◍ Two technicians are inspecting a brake drum for wear. Technician A says if
the brake drum has small cracks along it's inside lining it should be replaced.
2026 FULL QUESTIONS AND SOLUTIONS
GRADED A+
◍ A vehicle's brake pedal fades to the floorboard resulting in vehicle creep at
stoplights. An initial inspection indicates there are no external leaks found.
Which of the following is MOST likely causing this brake pedal to fade?.
Answer: Leaking master cylinder cup seals.
◍ Two technicians are discussing traction control systems. Technician A says
if the amber TCS light flashes while driving in poor weather conditions,
there is an electrical fault in the system. Technician B says these systems
require an electric pump and accumulator. Who is correct?.
Answer: TECH B is correct. TCS systems use an electric pump and
accumulator to apply the brake on the wheel that's lost its traction.
◍ All of the following are correct about brake shoes replacement EXCPET:.
Answer: The secondary shoe has a shorter brake shoe lining
◍ Technician A says electronic stability control systems require four wheel
speed sensors. Technician B says the telltale lamp will flash when the ESC
system is activated. Who is correct?.
Answer: Both technicians are correct.
◍ Two technician are discussing ABS hydraulic modulators. Technician A
says the inlet valve is normally closed. Technician B says the outlet valve is
normally open. Who is correct?.
Answer: Neither A or B
◍ A vehicle has a low spongy brake pedal. Which of these is LEAST likely to
result in this condition?
A. Loose wheel bearings.
, B. Contaminated brake fluid.
C. Worn brake pads.
D. Air in the hydraulic system..
Answer: Answer C is correct. Low brake pads would result in a warning clip
squeal or tire pad sensor light illumination.
◍ A vehicle's brake lights are completely inoperative. Technician A says the
brake light switch may be stuck closed. Technician B says the circuit may
have shorted and blown a fuse. Who is correct?.
Answer: TECH B is correct. If both brake lights are out, start
troubleshooting with a quick check of the circuits fuse.
◍ The red brake warning light on the instrument panel illuminates only when
the brakes are applied. Which of these will result in this condition.
A. A burned brake light bulb.
B. Air in the hydraulic brake system.
C. A damaged wheel speed sensor tone ring.
D. An open in the brake switch circuit..
Answer: Answer B is correct. The red brake warning light will illuminate if
there's a loss in pressure in one of the two hydraulic brake circuits, if the
parking brake is engaged, or if the key is in the ON/RUN position.
◍ The brake of a four-wheel disc brake system are self-applying and locking
up after only a few miles of travel. Which of the following is the MOST
likely cause of this condition?.
Answer: A blocked master cylinder vent port
◍ A technician is measuring the inside diameter of a brake drum with a brake
drum micrometer. The technician should use which of the following
measurements
A. The smallest measurement.
B. A brake drum tool is not used.
C. The average of all the measurements.
D. The largest measurement..
Answer: Answer D is correct. The largest measurement is used.
, ◍ Two technicians are discussing brake backing plates. Technician A says if a
ridge has formed on the pads where the shoes rest they may be filed to
restore a smooth finish. Technician B says to apply bearing grease to reduce
brake squeak. Who is correct?.
Answer: TECH A is correct. The ridge often formed by the movement of the
brake shoe may be filed smooth.
◍ A technicien is replacing a brake hose and a damaged section of brake line
tubing. Which of the following is correct?.
Answer: Use double-walled steel tubing.
◍ The front brake pads on a vehicle with a quick take up master cylinder need
replacement. They were replaced just recently. Technician A says this is a
low drag brake system. Technician B says this could be caused by a sticking
quick take up valve. Who is correct?.
Answer: Both technicians are correct
◍ A three-function combination valve has all of these EXCEPT a:
A. Proportioning valve.
B. Metering valve.
C. Solenoid valve.
D. Brake failure light switch..
Answer: Answer C is correct. The solenoid valve is not part of the
combination valve.
◍ Which of the following input sensor are used by the traction and stability
control system?.
Answer: Yaw Rate Sensor Steering Angel Sensor Wheel Speed Sensor
◍ Technician A says to use an outside micrometer to measure rotor lateral
runout. Technician B says to use a dial indicator to measure rotor thickness.
Who is correct.
Answer: Neither A or B
◍ Two technicians are inspecting a brake drum for wear. Technician A says if
the brake drum has small cracks along it's inside lining it should be replaced.
