ASE BRAKES

Which of the following would be the most normal end-play specification for a set of tapered roller front wheel bearings?

0.0010"-0.0050" (0.0254mm-0.127mm) This is the correct specification.

The minimum rotor thickness specification is 1.250" (31.75mm). Which of the following measurements would indicate the reusable?

1.520" (38.61mm) This measurement is greater than specification, indicating the rotor is not worn too thin. The specification is for minimum thickness.

Vacuum to the booster is being measured with the engine idling. Which of the followine would be considered a normal reading?

18" Hg This would be a normal vacuum reading.

During a moderate brake pedal application, with the engine running, which of the following would be considered a normal pressure reading on the inlet pressure gauge shown in the figure above?

900 psi This would be normal.

The brake pads are worn at an angle on a vehicle equipped with rear disc brakes. Which of the following is the most likely cause?

A bent support would cause the pads to contact the rotor at an angle and result in pads which are worn at an angle.

A drum brake will rotate freely forward but will bind when rotated backward. Which of the following is the most likely cause?

A broken return spring on the rear shoe would cause the brake to bind going backward.

The brake pedal on a vehicle will slowly drop while the vchicle is sitting at a stop light. Which of the following could be the cause?

A bypassing master cylinder could cause the pedal to fade away while a constant pressure is applied.

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 bypassing master cylinder would cause a low pedal and would not cause a loss of fluid.

The left front disc brake caliper is dragging. All the other brakes operate normally. Which of the following could be the cause?

A damaged hose can act as a check valve and cause the fluid to fail to return to the master cylinder and the brake to drag.

A hydro-boost system is being checked on a vehicle. The power steering system function normally; however, the brakes have very little power assist. Which of the following could be the cause?

A faulty hydro-boost unit would cause a lack of assist, with the power steering system working normally.

Which of the following would most likely cause a brake fluid leak on a front disc brake caliper assembly?

A faulty seal could cause a leak.

Vacuum assist from the brake booster is present with the engine running but not present after the vehicle's engine is shut off. Which of the following could cause this condition?

A faulty vacuum check valve could cause no vacuum stored in the brake booster after the engine is shut off.

brake pulsation similar to the A customer is concerned that on dry pavement, their vehicle will occasionally have a rapid feel of an ABS stop. Which of the following is the most likely cause?

A faulty wheel speed sensor can give false information which may cause ABS activation when it is not needed.

primary reservoir. The brake system has a low, soft pedal with the engine running. The brake fluid is low in the which of the following could be the cause?

A leaking master cylinder would cause a low, soft pedal.

drum is chattering on the brake lathe. This could be the result of:

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 is being diagnosed for a high, hard pedal. Which of the following tools could be used?

A power steering pressure tester would be used to test the pressure and flow from the pump.

The pressure differential valve lights the red brake warning light when:

A pressure differential will cause the switch to illuminate the light.

A vehicle pulls left after the brake pedal is released. This could be caused by:

A restricted left front brake hose would allow higher pressure from the master cylinder to get to the caliper, but not leave the caliper. This condition would leave the left front caliper applied after the brake pedal is released.

A brake system which uses a vacuum brake booster has poor braking performance and a hard, high brake pedal with the engine running. Which of the following could be the cause?

A restricted vacuum hose would cause a hard pedal with poor braking performance.

A vehicle equipped with a "hill holding" option has a abs code. Which two would most likely be used to check the wheel speed sensor

A scan tool or oscilloscope can be used to test a signal from a digital wheel speed sensor.

Which of the following is most likely to use a single channel ABS system?

A single channel ABS system is usually found on rear-whecel drive pickups and vans.

A single channel ABS system will have ABS installed on:

A single channel ABS system will have ABS on the rear wheels only.

Which of the following is true concerning master cylinder pushrod adjustment?

A slight gap should be present between the pushrod and master cylinder. This will leave the compensating port open and allow for fluid expansion.

Refer to the figure above. Which of the following would normally be used to return the piston fully into the caliper bore?

A special tool A special adapter, which engages the recess of the piston, is used to turn the piston back into the caliper.

A spongy pedal can be the result of:

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 comes back into the shop with a brake pulsation after having the rotors replaced. Which of the following is the most likely cause?

A wheel torque that is too tight could warp the rotors. This could result in pedal pulsation.

A vehicle cquipped with a hydro-boost brake system has a low, soft pedal with little braking action. Which of the following could be the cause?

Air in the brake fluid would cause a low, soft pedal.

The brake warning lamp pictured above will come on when the service brakes are applied. Which of the following could be the cause?

Air in the fluid would cause the pressure differential switch to turn the light on when the brake pedal is depressed. This is because the air would cause a difference in pressure in the two systems.

A wheel cylinder has been honed. It should be cleaned with:

Alcohol will flush the bore without leaving an oil residue.

The brake fluid has been contaminated with oil. Which of the following is correct?

All rubber components must be replaced. Oil contamination will ruin all the rubber parts of a brake system.

Which of the following is true concerning an integral ABS system?

An integral system will use an electro-hydraulic pump to provide brake boost assist.

brake warning lamp illustrated in the figure above does not illuminate when the parking brake is applied. It operates normally otherwise. Which of the following could be the cause?

An open ground at the parking brake switch would prevent the light from illuminating when the parking brake is activated.

The brakes are dragging on a vehicle. This could be caused by:

An overfilled master cylinder reservoir would not allow for fluid expansion. This would cause the brakes to self apply as the fluid expanded and result in brake drag.

The screw threads of the drum brake self adjuster should be lubricated with which of the following?

Antiseize is the correct lubricant.

Technician A says an analog wheel speed sensor can be checked with a DMM set on AC volts. Technician B says an analog wheel speed sensor can be checked with an ohmmeter. Who is correct?

Both Technicians are correct. Analog wheel speed sensors generate an AC voltage and can be measured for AC voltage output, and the sensor coil can be checked for correct resistance using an ohmmeter.

A vehicle with poor brake performance is being tested as shown above. Both pressure gauges are below normal. Which of the following could be the cause?

Both gauges are connected to the primary circuit; a leaking primary cup could cause only the primary pressure to be low.

A says that a master cylinder pushrod that is adjusted too long could cause the brakes to drag. Technician B says that a master cylinder pushrod that is adjusted too long could result in repeat master cylinder failure. Who is right?

Both technicians are correct. A master cylinder pushrod that is adjusted too long would cause the compensating port to be covered and not allow for fluid expansion. This would result in brake drag. If the pushrod is adjusted too long the master cylinder could over-travel. This over-travel condition could damage the master cylinder and cause repeat master cylinder failure.

The brake pedal of a vehicle slowly falls to the floor. No leaks are found and the reservoir is full. Technician A says that the cup seals in the master cylinder may be bypassing. Technician B says that a corroded internal master cylinder bore could be the cause. WVho is correct?

Both technicians are correct. An internally bypassing master cylinder could cause a low pedal complaint. A corroded master cylinder bore could cut the cup seals of the master cylinder pistons and cause a bypassing condition. This bypassing condition could cause a low pedal complaint.

Technician A says some parking brakes have a pedal to push to apply the parking brake. Technician B says some parking brakes have a pedal to push to release the parking brake. Who is correct?

Both technicians are correct. Depending on the design of the parking brake, they can be used as "push to apply" or "push to release".

Technician A says that a leaking wheel cylinder can be identified by looking behind the boot. Technician B says that some wheel cylinders cannot be honed. Who is correct?

Both technicians are correct. Leaking wheel cylinders can be detected by lifting the boot and looking behind it for brake fluid. Some wheel cylinders have hardened bores and should not be honed.

Technician A says some wheel speed sensors are incorporated with the wheel bearing assembly and must be replaced as a unit. Technician B says some wheel speed sensors are located in the rear axle differential. Who is correct?

Both technicians are correct. Some sensors are located in the differential and some are incorporated into the bearing assembly.

After disc brake pad replacement, the new pads should be burnished. This purpose of this procedure is to:

Brake pad burnishing conforms the friction material to the rotor

All of the following could cause the wheel cylinder to leak EXCEPT:

Brake pedal adjustment. Out of adjustment brake pedal may cause the brakes to drag; however, it would not cause the wheel cylinder to leak. incorrect.

All of the following are the result of brake pad burnishing EXCEPT:

Brake rotors do not need the metal cured.

Brake chatter can be caused by:

Contaminated linings could cause the brake shoes to stick and slip, which would cause a chattering condition.

Four channel ABS sensors will have how many ABS wheel speed sensors?

Four channel ABS systems will have four sensors, one for each wheel.

Tapered front roller bearings were replaced during a brake job. The vehicle has come back into the shop with the wheel bearing welded to the spindle. Which of the following is the most likely cause?

If the bearings were overtightened they would overheat and weld to the spindle.

Refer to the figure above. The internal spring in the wheel cylinder is left out during a brake rebuild. Which of the following would be the most likely result?

If the spring was missing the cups could pull away from the walls and allow air into the system.

A vehicle has a low, firm brake pedal. Which of the following would most likely be the cause?

Improperly adjusted shoes can cause the wheel cylinder pistons to travel further, thus causing a low, firm pedal.

The metering valve:

Limits front brake application until the rear brakes apply.

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?

Low power steering fluid can cause the booster to provide very little if any boost.

All of the following would cause the red brake warning lamp (RBWL) to be illuminated EXCEPT:

Low pressure to the hydraulic brake booster would not cause the red warning light to illuminate.

Which of the following could cause excessive noise while braking?

Missing anti-rattle clips could cause excessive noise while braking

When reinstalling the caliper slide pins, they should be lubricated with:

Most manufacturers recommend using a high temperature silicon grease.

Refer to the illustration above. The service brakes work correctly; however, the parking brake will not function. Technician A says the problem could be a torn boot. Technician B says the problem could be air in the hydraulic system. Who is correct?

Neither Technician is correct.

Technician A says a double flare line should be replaced with an ISO flare line. Technician B says an ISO flare line should be replaced with a double flare line. Who is correct?

Neither Technician is correct.

Technician A says the above pads can be removed without removing the caliper. Technician B says the above pads can be removed without removing the pins. Who is correct?

Neither Technician is correct.

When the parking brake is released the parking brake pedal fails to return to its most upward position, Technician A says a faulty master cylinder could be the cause. Technician B says air trapped in the brake fluid could be the cause. Who is correct?

Neither Technician is correct. A faulty or broken return spring could cause the pedal to fail to fully return.

On a vehicle with rear disc brakes using an integral parking brake, the service brakes work correctly; however, the parking brake will not function. Technician A says the problem could be a seized caliper piston. Technician B says the problem could be a leaking piston seal. Who is correct?

Neither Technician is correct. A likely cause wvould be a stretched parking brake cable.

During a pressure test both gauges in the figure above read lower than normal. Technician A says a frozen (stuck) disc brake caliper could be the cause. Technician B says a frozen (stuck) wheel cylinder piston could be the cause. Who is correct?

Neither Technician is correct. Both gauges reading low could be caused by a faulty master cylinder.

Technician A says that brake drag can be caused by worn drums. Technician B says that brak drag can be caused by a seized star-wheel adjuster. Who is correct?

Neither Technician is correct. Brake drag can be caused by weak return springs.

Technician A says DOT 3 and DOT 5 brake fluid can be mixed in a brake system without any problems. Technician B says DOT 4 and DOT 5 brake fluid can be mixed in a brake system without any problems. Who is correct?

Neither Technician is correct. DOT 5 brake fluid cannot be mixed with any other fluid.

During a pressure test both gauges in the figure above read lower than normal. Technician A says a swollen hose could be the cause. Technician B says a restricted hose could be the cause. Who is correct?

Neither Technician is correct. There are no rubber hoses between the master cylinder and the combination valve, so this effect could only be caused by a master cylinder not producing enough pressure or by a kinked steel line prior to the gauges.

Technician A says this The brake warning lamp pictured above stays on any time the ignition switch is on. could be caused by a poor ground at the parking brake switch. Technician B says this could be caused by a poor ground at the brake warning lamp switch. Who is correct?

Neither Technician is correct. There is a ground present at all times to cause the light to be on all the time.

When a customer attempts to apply the parking brake, the pedal travels its full range of motion however the parking brakes do not apply. Technician A says a faulty master cylinder could be the cause. Technician B says air trapped in the brake fluid could be the cause. Who is correct?

Neither Technician is correct. This problem could be caused by the rear brakes being out of adjustment.

Technician A says an analog wheel speed sensor generates a square wave output signal. Technician B says a digital wheel speed sensor generates an ac signal. Who is correct?

Neither technician is correct. An analog wheel speed sensor generates an ac waveform, and a digital wheel speed sensor generates a de waveform.

Refer to the figure above. 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

Neither technician is correct. This style of pin should be installed with a torx or hex head socket.

When bench bleeding a master cylinder which statement is true?

New brake fluid should be used when bleeding the master cylinder.

After a brake application, the inlet pressure gauge in the figure above drops to normal; however, the outlet pressure gauge remains higher than normal. Which of the following could be the cause?

Normally, the outlet pressure gauge would drop along with the inlet pressure gauge unless fluid is being trapped and pressure is building up. The combination valve is restricting flow. The fluid pressure is being trapped by the combination valve; the ddid is not returning to the master cylinder. The combination valve must be replaced.

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?

Only Technician A is correct. A hydro-boost system uses hydraulic pressure to create boost

Technician A says lug nuts for steel wheels should be torqued in a star pattern. Technician B says lug nuts for aluminum wheels should be torqued in a circle pattern. Who is correct?

Only Technician A is correct. Lug nuts should be torqued in a star pattern regardless of wheel type.

Technician A says rotor thickness is being measured in the figure. Technician B says rotor runout is being measured. Who is correct?

Only Technician A is correct. Rotor thickness is being measured.

Technician A says rust can cause a faulty wheel speed sensor signal. Technician B says a defective brake switch can cause a faulty wheel speed signal. Who is correct?

Only Technician A is correct. Rust can cause the wheel speed sensor to be pushed out of the housing it sits in, and result in a faulty wheel speed sensor signal.

The brake fluid has been contaminated with oil. Technician A says all rubber hydraulic brake components must be replaced. Technician B says all the antilock braking system (ABS) wheel speed sensors must be replaced. Who is correct?

Only Technician A is correct. The oil has contaminated the system and any rubber part which contacts the brake fluid must be replaced.

Technician A says the purpose of the traction control deactivation switch is to allow wheel spin in deep snow or mud. Technician B says the purpose of the traction control deactivation switch is to improve fuel economy. Who is correct?

Only Technician A is correct. The switch allows wheel spin for trying to remove a stuck vehicle from deep snow or mud.

Technician A says an analog wheel speed sensor can detect which direction the wheel is turning. Technician B says a digital wheel speed sensor can detect which direction the wheel is turning. Who is correct?

Only Technician B is correct. A digital wheel speed sensor can indicate direction by detecting narrow and wide slots on the reluctor ring.

4. A vehicle is equipped with a disc/drum brake system. When the customer pulls the parking brake lever the lever travels its full range of motion, but the parking brake does not apply. Technician A says the disc brakes could be out of adjustment. Technician B says the drum brakes could be out of adjustment. Who is correct?

Only Technician B is correct. Out of adjustment rear drum brakes could be the cause.

The brake caliper piston boot was cut when the caliper was reassembled. Technician A says this will cause a brake fluid leak when the caliper is reinstalled. Technician B says this could cause the piston to bind due to contamination. Who is correct?

Only Technician B is correct. The boot is designed to prevent contamination of the outside piston area. If the boot is ripped it could result in the piston becoming stuck.

Refer to the illustration above. braking system (ABS) modulator valve. Technician B says pressure is being tested at the Technician A says pressure is being tested at the antilock combination valve. Who is correct?

Only Technician B is correct. This is a combination valve.

worn much more During a brake inspection on a single piston floating than the outer. Technician A says a binding piston could be the cause. caliper the technician finds the inner pad Technician B says a sticking caliper body could be the cause. Who is correct?

Only Technician B is correct. This is a sliding caliper. If the caliper will not slide, the inner pad will do all the braking and the outer pad will not do any.

Technician A says the line labeled "To engine vacuum" in the figure above would connect to the intake manifold on a diesel engine. Technician B says the line labeled "To engine vacuum" would connect to the intake manifold on a gasoline engine. Who is correct?

Only Technician B is correct. This line does connect to the intake manifold on a gasoline engine. It is the source of vacuum for the vacuum assist unit.

A brake line needs replaced. Technician A says with compression fittings. Technician B says a new section of line should be installed using an that a new section of line should be installed ISO or double flare. Who is correct?

Only Technician B is correct. When a steel brake line fails it should be

A customer has a noise concern coming from the rear of the vehicle. All of the following could be the cause EXCEPT:

Rear tires out of balance would cause a vibration but not a noisC.

The technician measures the front rotors: the results are listed below: Minimum Rotor Thickness, Specification: .898" (22.80mm) Actual Rotor Thickness, Left: .988" (25.09mm) Actual Rotor Thickness, Right: 989" (25.12mm)

Reuse both rotors Both rotors are reusable.

The proper procedure for adjusting tapered roller wheel bearings used on some drum brake hubs is:

Tapered roller wheel bearings should be tightened while spinning the hub to seat the bearings, and then backed off to the specified amount of end-play.

The right front caliper is inoperative. All other brakes operate normally. Technician A says thất a collapsed brake hose could cause this. Technician B says that a faulty master cylinder could cause this. Who is correct?

Technician A is correct. A collapsed hose may prevent pressure from reaching an individual caliper.

The rear wheels of a front wheel drive car lockup during heavy braking. Technician A says this could be caused by a faulty proportioning valve. Technician B says this could be caused by a faulty brake booster. Who is correct?

Technician 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.

While testing the system shown above, the technician finds there is no assist from the booster fer the engine is shut off. Which of the following is the most likely cause?

The accumulator could be faulty and not storing pressure.

The brake pads need to be replaced on the above system. Which of the following is true?

The adjusting bolt is retracted to make room for the new pads after the old pads are removed and before the new pads are installed.

The goal of burnishing the brakes after a complete brake service is to:

The brake assemblies are intentionally allowed to get heated during burnishing. This allows the braking materials to cure.

Which of the following is a typical input to the ABS control module?

The brake light switch is a typical input to the ABS control module.

When the brake line is loosened at the master line no fluid will drip: however, when the brake pedal is pulled up fluid will start to drip. Which of the following is indicated?

The brake pedal may be out of adjustment. The compensating port is being covered until the pedal is lifted.

The caliper piston seal is leaking. Which of the following would most likely result?

The brake pedal would become soft because as the fluid got low, air would enter the system.

In the figure above, if the spring is left out during assembly, which of the following would most likely occur?

The brake would not self adjust.

The caliper slide pin bushings are worn. Which of the following is true?

The bushings must be replaced.

A set of tapered roller bearings are being serviced. Which of the following is true concerning the correct tightening procedure?

The final check should be 0.001"-0.005" (0.025mm-0.127mm).

A height sensing proportioning valve would be located on:

The height sensing valve is located in the rear in the center.

The flexible line connected to the front disc brake caliper is cracked. Which of the following should the technician do?

The hose should be replaced.

Which operation is being performed in the illustration above?

The master cylinder is being bleed prior to installation.

A complete brake job including installing a new master cylinder has been performed on a vehicle. After a short test drive all the brakes locked up. Which of the following is the most likely cause?

The master cylinder was incorrectly installed. antilock The most likely cause is that the master cylinder pushrod was not correctly adjusted.

The traction control lamp stays on continuously on a vehicle. The ABS light is not lit. Which of the following is the most likely cause?

The most likely cause is a fault in the traction control module.

The left front wheel bearing has been renlaced on a fron wheel drive vehicle. Which of the following is true concerning the correct procedure to tighten the drive axie nut

The nut should be tightened to the torque specification. This is the correct procedure.

A parking brake cable is binding on a vehicle with front disc and rear drum brakes. This can result in:

The parking brakes are on the rear; therefore, a binding cable can cause a dragging rear brake.

The technician is preparing to do a brake job on a vehicle equipped with integral ABS. Which of the following should be done?

The pedal should be pumped 25-40 times to bleed all the pressure from the ABS accumulator.

Which of the following is true concerning caliper removal?

The pins do have to be removed to remove the caliper.

When bench bleeding the master cylinder which statement is true?

The piston should be stroked until bubbles stop flowing. The wooden dowel should be used to stroke the master cylinder until the bubbles stop flowing.

When adjusting the parking brake which of the following is correct?

The shoes should be adjusted, then the cable.

A tapered wheel bearing has failed and spun on the spindle. The spindle now is blue/purple where the inner race sits. Besides replacing the bearing what else must be replaced?

The spindle If the bearing has spun on the spindle then the spindle is worn and the new bearing will also spin.

Which of the following is LEAST LIKELY to be an input to the traction control system?

The transmission input shaft is not a typical input to the traction control system.

A vehicle has a wheel speed sensor diagnostic trouble code. Which of the following is the LEAST LIKELY cause?

The width of the tire will not affect the wheel speed sensor signal.

When installing the slide pins on the disc brake caliper the technician finds one hole stripped out. Which of the following is the most economical repair?

There are many models which have oversized bolts available: this is usually the easiest and most economical repair.

In the picture shown above, the two lower brake lines are equipped with:

These are proportioning valves.

Which of the following is true concerning a non-integral ABS system?

They can use a vacuum brake booster.

Which of the following is true concerning the above caliper?

This caliper incorporates a parking brake.

A vehicle equipped with front disc/rear drum brakes has a binding parking brake cable. This can result in:

This drum may be difficult to remove, because the shoes are not fully retracted.

The brake caliper shown above is a:

This is a single piston floating design.

There is a loud growling noise while driving. The noise gets louder when vehicle speed increases. Which of the following could be the cause?

This is a typical wheel bearing diagnosis.

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?

This is a typical wheel bearing noise.

Which of the following would be the correct way to handle brake fluid?

This is the correct procedure.

The tool shown above is used on the:

This tool is used on the combination valve to hold the metering valve open during bleeding.

The tool shown above is used to:

This tool is used to compare the drum to the shoes.

When driving a new race of a tapered wheel bearing into the hub, which of the following is true?

This will fully seat the race in the hub. The sound will change from e ringing sound to a deep thud. Also the hub will tend to bounce when the race is fully inserted

A customer says their car makes more noise on asphalt than on concrete road surfaces. Which of following could be the cause?

Tires with very aggressive tread patterns are noisey. The sound will differ depending on the surface of the road.

The hydraulic brakes on a car function correctly. However, the vacuum brake booster is not providing any brake assistance. Which of the following could be the cause?

Too little vacuum to the booster could cause little or no assistance from the booster.

When installing threaded caliper slide pins, which of the following is the most normal tightening procedure?

Twenty-five ft lbs would be a normal torque.

Brake fluid test strips can test the brake fluid for:

Water. Test strips check for water or copper contaminated brake fluid.

A customer is concerned that under heavy acceleration on dry pavement the traction control light comes on and the throttle momentarily becomes unresponsive. Which of the following is the most likely cause?

When a tire loses traction the control module will reduce power from the engine in an attempt to regain traction. This can result in the customer sensing that the throttle is unresponsive.

A vehicle has a low brake pedal, Master cylinder fluid level is correct. Which of following is the most likely cause?

When the brake shoes are out of adjustment, the wheel cylinder must push them out further to contact the drum. The master cylinder will have to be pushed in further to accomplish this and will result in low pedal.

A customer is concerned that the traction control light flashed on momentarily while driving on slick roads. The technician finds no stored diagnostic trouble codes. Which of the following is most likely the cause?

When the traction control system activates it is normal for the traction control light to illuminate. This informs the operator that the system is operating.

All of the following could cause brake pedal pulsation EXCEPT:

Worn brake pad linings

A disc brake caliper is dragging. All of the following could be the cause EXCEPT:

Worn brake pads will not cause the brakes to drag.

The brake pads are worn at an angle on a vehicle with a sliding brake caliper system. Which of the following is the most likely cause?

Worn bushings can cause the caliper to cock during operation. This could cause the pads to wear at an angle.

The brake fluid reservoir is low on fluid. Which of the following is the most likely cause?

Worn front brake pads will cause the caliper piston to be pushed out further to take up for the wear. More fluid will be stored in the caliper as a result.

A vehicle has a squeak only when applying the brakes. Which of the following could be the cause?

Worn pads can cause a squeak when applying the brakes.

A vehicle pulls right while braking. The most likely cause would be:

is correct. Seized left caliper slides side. The higher braking force on the right side would would cause a lack of braking force on the let cause the vehicle to pull to the right.

A diagnostic trouble code is set for an open wheel speed sensor on the left front sensor. The technician measures the resistance at the sensor and finds it to be within specification. Which of the following is the most likely cause for the wheel speed sensor code?

open in the wiring from the sensor to the computer would cause a diagnostic trouble code to be set and the sensor to have the correct resistance.

All of the following could cause a brake pedal pulsation EXCEPT:

pedal pulsation. Worn brake pad linings can cause noise, but will not cause a brake