ASE : ASE Package Deal:ASE Brakes Exam:ASE A1:ASE
Certification Exam:ASE MLR :BMW Members Exam:BMW
Associate level ASE : Questions & Answers
A drum is chattering on the brake lathe. This could be a result of
a. failure to install the dampening belt
b. cutting too slowly
c. dull cutting blades
d. cutting speed too fast - ANSWER:A : failure to install the dampening belt
why : a missing dampening belt could cause the drum to vibrate while on the lathe. this vibration can
cause the drum to bounce on the cutting tip and make a chattering noise
A vehicle equipped with a hydro-boost brake system has a hard pedal with little braking action. Which of
the following could be the cause?
a. low brake fluid
b. air in the brake fluid
c. low power steering fluid
d. an overtightened power steering belt - ANSWER:C : low power steering fluid
why : low power steering fluid can cause the booster to provide very little if any boost
Which of the following could cause excessive noise braking?
a. worn wheel cylinders
b. worn caliper pistons
c. seized caliper slides
d. missing clips - ANSWER:D : missing clips
,why : missing anti-rattle clips could cause excessive noise while braking
A vehicle equipped with a "hill holding" option has an ABS code. Which tool would most likely be used to
check the wheel speed sensor?
a. AC volt meter
b. Ohm meter
c. Scan tool
d. Ammeter - ANSWER:C : scan tool
why : a scan tool or oscilloscope can be used to test a signal from a digital when speed sensor
The brake system has a soft, sinking pedal with the engine running. The brake fluid level is at the correct
height. Which of the following could be the cause?
a. a restricted vacuum hose
b. a leaking master cylinder
c. a bypassing master cylinder
d. a stuck open vacuum check valve - ANSWER:C : a bypassing master cylinder
why : a bypassing master cylinder would cause a low pedal and would not cause a loss of fluid
Technician A says the pins should be driven in with a brass hammer. Technician B says the pins should be
lubricated with brake fluid. Who is correct? ( pg. 47 )
a. A
b. B
c. A & B
d. neither A OR B - ANSWER:D : neither A OR B
why : neither technician is correct. this style of pin should be installed with a torx or hex head socket
,Technician A says a hydro-boost system can use the power steering pump to operate the booster.
Technician B says a hydro-boost system can use engine vacuum to operate the booster. Who is correct?
( pg. 47 )
a. A
b. B
c. A & B
d. neither A & B - ANSWER:A : only A
why : only tech A is correct. a hydro-boost system uses hydraulic pressure to create boost
A disc brake caliper is dragging. All of the following could be the cause EXCEPT
a. binding pins
b. sticking piston
c. binding caliper
d. worn brake pads - ANSWER:D : worn brake pads
why : worn brake pads will not cause the brakes to drag
Which operation is being performed in the illustration? ( pg. 48 )
a. wheel cylinder bleeding
b. brake caliper bleeding
c. master cylinder bleeding
d. master cylinder pressure test - ANSWER:C : master cylinder bleeding
why : the master cylinder is being bleed prior to installation
The rear wheels of a front wheel drive car lockup during heavy breaking. Technician A says this could be
cause by faulty proportioning valve. Technician B says this could be caused by a faulty brake booster.
Who is correct?
, a. A only
b. B only
c. Both A & B
d. Neither A or B - ANSWER:A : A only
why : tech A is correct. a faulty proportioning valve could cause the pressure to the rear wheels to be too
high and lock the wheels during hard braking
There is a loud growling noise only when the vehicle is steered to the right while driving. Which of the
following could be the cause?
a. work left front brakes
b. worn wheel bearing
c. worn right front brakes
d. sticking brake caliper - ANSWER:B : worn wheel bearing
why : this is a typical wheel bearing noise
A spongy pedal can be the result of:
a. leaking wheel cylinders
b. broken return springs
c. contaminated linings
d. seized wheel cylinder pistons - ANSWER:A : leaking wheel cylinders
why : a spongy pedal can result from air in the hydraulic system. leaking wheel cylinders could allow air
to get into the hydraulic system and result in a spongy pedal
A vehicle has a wheel speed sensor diagnostic trouble code. Which of the following is the LEAST LIKELY
cause?
a. faulty wheel speed sensor
b. cracked wheel speed sensor reluctor ring
Certification Exam:ASE MLR :BMW Members Exam:BMW
Associate level ASE : Questions & Answers
A drum is chattering on the brake lathe. This could be a result of
a. failure to install the dampening belt
b. cutting too slowly
c. dull cutting blades
d. cutting speed too fast - ANSWER:A : failure to install the dampening belt
why : a missing dampening belt could cause the drum to vibrate while on the lathe. this vibration can
cause the drum to bounce on the cutting tip and make a chattering noise
A vehicle equipped with a hydro-boost brake system has a hard pedal with little braking action. Which of
the following could be the cause?
a. low brake fluid
b. air in the brake fluid
c. low power steering fluid
d. an overtightened power steering belt - ANSWER:C : low power steering fluid
why : low power steering fluid can cause the booster to provide very little if any boost
Which of the following could cause excessive noise braking?
a. worn wheel cylinders
b. worn caliper pistons
c. seized caliper slides
d. missing clips - ANSWER:D : missing clips
,why : missing anti-rattle clips could cause excessive noise while braking
A vehicle equipped with a "hill holding" option has an ABS code. Which tool would most likely be used to
check the wheel speed sensor?
a. AC volt meter
b. Ohm meter
c. Scan tool
d. Ammeter - ANSWER:C : scan tool
why : a scan tool or oscilloscope can be used to test a signal from a digital when speed sensor
The brake system has a soft, sinking pedal with the engine running. The brake fluid level is at the correct
height. Which of the following could be the cause?
a. a restricted vacuum hose
b. a leaking master cylinder
c. a bypassing master cylinder
d. a stuck open vacuum check valve - ANSWER:C : a bypassing master cylinder
why : a bypassing master cylinder would cause a low pedal and would not cause a loss of fluid
Technician A says the pins should be driven in with a brass hammer. Technician B says the pins should be
lubricated with brake fluid. Who is correct? ( pg. 47 )
a. A
b. B
c. A & B
d. neither A OR B - ANSWER:D : neither A OR B
why : neither technician is correct. this style of pin should be installed with a torx or hex head socket
,Technician A says a hydro-boost system can use the power steering pump to operate the booster.
Technician B says a hydro-boost system can use engine vacuum to operate the booster. Who is correct?
( pg. 47 )
a. A
b. B
c. A & B
d. neither A & B - ANSWER:A : only A
why : only tech A is correct. a hydro-boost system uses hydraulic pressure to create boost
A disc brake caliper is dragging. All of the following could be the cause EXCEPT
a. binding pins
b. sticking piston
c. binding caliper
d. worn brake pads - ANSWER:D : worn brake pads
why : worn brake pads will not cause the brakes to drag
Which operation is being performed in the illustration? ( pg. 48 )
a. wheel cylinder bleeding
b. brake caliper bleeding
c. master cylinder bleeding
d. master cylinder pressure test - ANSWER:C : master cylinder bleeding
why : the master cylinder is being bleed prior to installation
The rear wheels of a front wheel drive car lockup during heavy breaking. Technician A says this could be
cause by faulty proportioning valve. Technician B says this could be caused by a faulty brake booster.
Who is correct?
, a. A only
b. B only
c. Both A & B
d. Neither A or B - ANSWER:A : A only
why : tech A is correct. a faulty proportioning valve could cause the pressure to the rear wheels to be too
high and lock the wheels during hard braking
There is a loud growling noise only when the vehicle is steered to the right while driving. Which of the
following could be the cause?
a. work left front brakes
b. worn wheel bearing
c. worn right front brakes
d. sticking brake caliper - ANSWER:B : worn wheel bearing
why : this is a typical wheel bearing noise
A spongy pedal can be the result of:
a. leaking wheel cylinders
b. broken return springs
c. contaminated linings
d. seized wheel cylinder pistons - ANSWER:A : leaking wheel cylinders
why : a spongy pedal can result from air in the hydraulic system. leaking wheel cylinders could allow air
to get into the hydraulic system and result in a spongy pedal
A vehicle has a wheel speed sensor diagnostic trouble code. Which of the following is the LEAST LIKELY
cause?
a. faulty wheel speed sensor
b. cracked wheel speed sensor reluctor ring
