ASE BRAKES Exams #1-5 (Answered) Latest Spring .

ASE BRAKES Exams #1-5 (Answered) Latest Spring . ASE BRAKES Exam #1 (Answered) . - A drum is chattering on the brake lathe. This could be the result of: A. Failure to install the dampening belt. B. Cutting too slowly. C. Dull cutting blades. D. Cutting speed too fast. - A vehicle is 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 - Which of the following could cause excessive noise while braking? A. Worn wheel cylinders B. Worn caliper pistons C. Seized caliper slides D. Missing clips - 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 - 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 - 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? A. A B. B C. Both A and B D. Neither A nor B - 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. - The rear wheels of a front wheel drive car lockup during heaving breaking. 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? A. A only B. B only C. Both A and B D. Neither A nor B - 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. Worn left front brakes B. Worn wheel bearing C. Worn right front brakes D. Sticking brake caliper - A spongy pedal can be the result of: A. Leaking wheel cylinders. B. Broken return springs. C. Contaminated linings. D. Seized wheel cylinder pistons. - 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 C. A tire with the incorrect height D. A tire with the incorrect width - A vehicle has a squeak only when applying the brakes. Which of the following could be the cause? A. Aerated brake fluid B. Water contaminated brake fluid C. Worn brake pads D. Worn wheel bearings - Which of the following would be the most normal end-play specification for a set of tapered roller front wheel bearings? A. 0.0001"-0.0005" (0.00254mm-0.0127mm) B. 0.0010"-0.0050" (0.0254mm-0.127mm) C. 0.0100"-0.0500" (0.254mm-1.27mm) D. 0.1000"-0.5000" (2.54mm-12.7mm) - Brake chatter can be caused by: A. Seized star-wheel adjuster. B. Seized wheel cylinder. C. Contaminated linings. D. Switched primary and secondary shoes. - 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? A. A B. B C. Both A and B D. Neither A nor B - All of the following are the result of brake pad burnishing EXCEPT: A. Forms the new pads to the rotor. B. Cures the materials in the friction material. C. Provides for better braking. D. Cures the metal in the rotor. - When bench bleeding a master cylinder which statement is true? A. New brake fluid should be used. B. Brake cleaning fluid should be used. C. Mineral spirits should be used. D. Mineral oil should be used. - The technician is preparing to do a brake job on a vehicle equipped with integral ABS. Which of the following should be done? A. Pump the pedal 25-40 times B. Remove the fuses for the ABS controller C. Apply the parking brake D. Remove the fuse for the ignition system - A customer has a noise concern coming form the rear of the vehicle. All of the following could be the cause EXCEPT: A. Worn rear wheel bearings. B. Rear tires out of balance. C. Dragging brake shoes. D. Binding parking brake cable. - 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. Over torqued lug nuts B. Under torqued lug nuts C. Sticking slides D. Incorrect brake fluid installed - A customer is concerned that on dry pavement, their vehicle will occasionally have a rapid brake pulsation similar to the feel of an ABS stop. Which of the following is the most likely cause? A. Faulty wheel speed sensor. B. Faulty master cylinder. C. Faulty ABS control module. D. Faulty brake booster. - The caliper piston seal is leaking. Which of the following would most likely result? A. The ABS light would start to flash. B. The traction control light would start to flash. C. The brake pedal would become very hard. D. The brake pedal would become very soft. - A vehicle pulls right while braking. The most likely cause would be: A. Seized left caliper slides. B. Faulty metering valve. C. Seized right rear wheel cylinder. D. Faulty master cylinder. - The pressure differential valve lights the red brake warning light when: A. The parking brake pedal is depressed. B. There is an ABS code. C. There is a pressure imbalance. D. The brake fluid is low. - 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. A vacuum gauge B. A black light C. A power steering pressure tester D. A vacuum pump - A vehicle has a low, firm brake pedal. Which of the following would most likely be the cause? A. Improperly adjusted brake shoes B. Leaking wheel cylinders C. Excessive rotor runout D. Out of round drums - The brake fluid reservoir is low on fluid. Which of the following is the most likely cause? A. Worn pads B. Worn shoes C. Bypassing master cylinder D. Leaking vacuum check valve - A customer says their car makes more noise on asphalt than on concrete road surfaces. Which of the following could be the cause? A. Front wheel bearing wear B. Rear wheel bearing wear C. Aggressive tire treat patterns D. Worn brake pads - Which of the following would most likely cause a brake fluid leak on a front disc brake caliper assembly? A. Piston seal B. Piston boot C. Caliper slide pins D. Caliper slide bushings - All of the following could cause a brake pedal pulsation EXCEPT: A. Thin brake pad linings. B. Excessive lug nut torque. C. Excessive rotor thickness variation. D. Rust build-up between the hub and rotor. - There is a loud growling noise while driving. The noise gets louder when vehicle speed increases. Which of the following could be the cause> A. Worn rear brake shoes B. Worn wheel bearing C. Worn ball joint D. Worn front brake pads - Which of the following would be the correct way to handle brake fluid? A. Because brake fluid does not have an expiration date, purchase in the largest containers possible for economy. B. Store in a container vented to the atmosphere. C. Store in a small, tightly sealed containers. D. Store in a temperature controlled environment, preferably refrigerated. - 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? A. A B. B C. Both A and B D. Neither A nor B - A vehicle equipped with a hydro-boost brake system has a low, soft pedal with little braking action. Which of the following could be the cause? A. Weak power steering pump B. Air in the brake fluid C. Air in the power steering fluid D. Low intake manifold vacuum - A set of tapered roller bearings are being serviced. Which of the following is true concerning the correct tightening procedure? A. Tighten the nut to 75 ft lbs. B. Tighten the nut to spec and back off one turn. C. The final check should be made with a dial indicator. D. The wheels/tires must be on the ground. - The brake system has a low, soft pedal with the engine running. The brake fluid is low in the primary reservoir. 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 - A brake line needs replaced. Technician A says that a new section of line should be installed with compression fittings. Technician B says a new section of line should be installed using an ISO or double flare. Who is correct? A. A only B. B only C. Both A and B D. Neither A nor B - Which of the following is a typical input to the ABS control module? A. Brake light switch B. Pressure differential watch C. PRNDL switch D. Power steering pressure switch - Technician A says that brake drag can be caused by worn drums. Technician B says that brake drag can be caused by a seized star-wheel adjuster. Who is correct? A. A only B. B only C. Both A and B D. Neither A nor B - A vehicle pulls left after the brake pedal is released. This could be caused by: A. A restricted left front brake hose. B. A cut master cylinder piston seal. C. A faulty metering valve. D. A restricted right front brake hose. (ANSWER) ASE BRAKES Exam #1 (Answered) . - 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? A. A tire has lost traction. B. The accelerator pedal position (APP) sensor is faulty. C. The throttle position (TPS) is faulty. D. A wheel speed sensor is faulty. - After disc brake pad replacement, the new pads should be burnished. This purpose of this procedure is to: A. Conform the pad lining to the rotor. B. Break the sealant off of the new linings. C. Remove finger prints from the rotor. D. Boil all the water out of the brake fluid. - 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? A. A B. B C. Both A and B D. Neither A nor B - 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? A. A B. B C. Both A and B D. Neither A nor B - 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? A. A B. B C. Both A and B D. Neither A nor B - The brake fluid has been contaminated with oil. Which of the following is correct? A. All rubber components must be replaced. B. Only rubber components which show contamination should be replaced. C. All steel lines must be replaced. D. Only steel lines which show contamination should be replaced. - The brakes are dragging on a vehicle. This could be caused by: A. Overfilled master cylinder reservoir. B. Low vacuum to the booster. C. Bypassing master cylinder. D. Quick take-up valve stuck open. - The caliper slide pin bushing are worn. Which of the following is true? A. The bushings must be replaced. B. The caliper must be replaced. C. The bushings and the caliper piston must be replaced. D. The bushings must be heated to be removed. - The proper procedure for adjusting tapered roller wheel bearings used on some drum brake hubs is: A. Tighten while spinning the hub to seat the bearings, then back off to the specified amount of end-play. B. Finger tighten the adjusting nut. C. Torque the adjusting nut to 20 lb/ft of torque and then turn the nut an additional 45 degrees. D. Torque the nut to 75 lbs with the wheels on the ground. - A drum brake will rotate freely forward but will bind when rotated backward. Which of the following is the most likely cause? A. A broken return spring on the front shoe B. A broken return spring on the rear shoe C. A binding wheel bearing D. An out of round drum - A parking brake cable is binding on a vehicle with front disc and rear drum brakes. This can result in: A. Dragging front brakes. B. Dragging rear brakes. C. Rusted brake drums. D. Rusted disc brake rotors. - A step bore master cylinder has been diagnosed to be faulty. Technician A says that the brake booster must be replaced along with the master cylinder. Technician B says that the step bore master cylinder cannot be rebuilt because it cannot be honed. Who is right? A. A only B. B only C. Both A and B D. Neither A nor B - A vehicle equipped with front disc/rear drum brakes has a binding parking brake cable. This can result in: A. Difficulty removing the disc brake pads. B. Difficulty removing the brake drum. C. Difficulty installing the disc brake pads. D. Difficulty installing the brake shoes. - Brake fluid test strips can test the brake fluid for: A. Oil. B. Water. C. Freeze protection. D. Power steering fluid. - During a brake inspection on a single piston floating caliper the technician finds the inner pad worn much more than the outer. Technician A says a binding piston could be the cause. Technician B says a sticking caliper body could be the cause. Who is correct? A. A B. B C. Both A and B D. Neither A nor B - 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? A. A B. B C. Both A and B D. Neither A nor B - 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? A. Worn caliper piston B. Worn caliper bushings C. Leaking caliper seal D. Leaking caliper boot - The flexible line connected to the front disc brake caliper is cracked. Which of the following should the technician do? A. Repair the section of cracked hose using a barb fitting. B. Replace the hose with a new one. C. Replace all the rubber hoses on the vehicles. D. Replace all the rubber and steel hoses on the vehicle. - When adjusting the parking brake which of the following is correct? A. Adjust the cable first, then the shoes. B. Adjust the shoes first, then the cable. C. Adjust the calipers first, then the shoes. D. Adjust the calipers first, then the cable. - When driving a new race of a tapered wheel bearing into the hub, which of the following is true? A. Drive the race until flush. B. Drive the race in until a distinct sound change occurs. C. Drive the race in until it is just below the surface. D. Drive the race in using the old wheel bearing as a driving tool. - When reinstalling the caliper slide pins, they should be lubricated with: A. High temperature wheel bearing grease. B. High temperature silicon grease. C. Lubriplate D. Antiseize - Which of the following is true concerning caliper removal? A. The fluid must be drained prior to removal. B. The caliper sliding pins must be removed prior to removal. C. The piston must be replaced every time the caliper is removed. D. The boot must be replaced every time the caliper is removed. - 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? A. A faulty wheel speed sensor B. A faulty brake modulator C. Normal operation D. Mismatched tires - 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? A. Faulty ABS computer B. Open fuse C. Open wiring from the computer to the wheel speed sensor D. Shorted left front ABS modulator valve - 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? A. A B. B C. Both A and B D. Neither A nor B - Technician 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? A. A only B. B only C. Both A and B D. Neither A nor B - 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? A. Wheel speed sensor B. ABS control module C. Traction control module D. ABS modulator valve - Vacuum to the booster is being measured with the engine idling. Which of the following would be considered a normal reading? A. 5" Hg B. 11" Hg C. 18" Hg D. 25" Hg - 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? A. The caliper must be replaced. B. The disc brake rotor must be replaced. C. There may be oversized bolts available. D. The steering knuckle must be replaced. - A vehicle has a low brake pedal. Master cylinder fluid level is correct. Which of the following is the most likely cause? A. Worn brake pad lining B. Seized wheel cylinder C. Seized caliper piston D. Brake shoes out of adjustment. - All of the following would cause the red brake warning lamp (RBWL) to be illuminated EXCEPT: A. A leaking wheel cylinder. B. A faulty master cylinder. C. Broken brake hose. D. Low pressure to the hydraulic brake booster. - 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? - 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? A. A B. B C. Both A and B D. Neither A nor B - 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? A. Too much vacuum to the booster B. Low brake fluid C. Incorrect brake fluid D. Too little vacuum to the booster - When the brake line is loosened at the master cylinder no fluid will drip from the loosened line; however, when the brake pedal is pulled up fluid will start to drip. Which of the following is indicated? A. The master cylinder should be replaced. B. The master cylinder should be rebuilt. C. The brakes may be out of adjustment. D. The brake pedal may be out of adjustment. - Which of the following is LEAST LIKELY to be an input to the traction control system? A. Throttle position sensor. B. Wheel speed sensor C. Engine RPM D. Transmission input shaft RPM (Answer:) ASE BRAKES Exam #3 (Answered) . - 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. A restricted vacuum hose B. A leaking master cylinder C. A bypassing master cylinder D. A stuck open vacuum check valve - A hydro-boost system is being checked on a vehicle. The power steering system functions normally; however, the brakes have very little power assist. Which of the following could be the cause? A. Faulty hydro-boost unit B. Faulty power steering pump C. Leaking steering gear D. Sticking tensioner - All of the following could cause the wheel cylinder to leak EXCEPT: A. Brake pedal adjustment. B. Lack of fluid maintenance. C. Torn dust boots. D. Recent shoe replacement. - 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? A. The bearing was overtightened. B. The bearing clearance was left too loose. C. The lug nuts were overtightened. D. The lug nuts were left loose. - The goal of burnishing the brakes after a complete brake service is to: A. Heat the brake assembly. B. Cool the brake assembly. C. Set the wheel bearings. D. Stretch the brake shoes to match the drum. - The right front caliper is inoperative. All other brakes operate normally. Technician A says that a collapsed brake hose could cause this. Technician B says that a faulty master cylinder could cause this. Who is correct? A. A only B. B only C. Both A and B D. Neither A nor B - 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. A faulty vacuum check valve B. A faulty vacuum booster hose C. Low manifold vacuum D. A leaking intake manifold - Which of the following is true concerning master cylinder pushrod adjustment? A. There should be a slight gap between the pushrod and master cylinder piston. B. It should be adjusted until the piston is pushed in slightly. C. It should keep a slight pressure in the hydraulic system. D. It should be adjusted at each brake pad replacement. - 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. A stuck piston B. A bent caliper support C. A stuck adjuster D. A bent parking brake lever - The left front disc brake caliper is dragging. All the other brakes operate normally. Which of the following could be the cause? A. Damaged right front brake line B. Damaged left front brake line C. Faulty master cylinder primary piston seal D. Faulty master cylinder secondary piston seal - The left front wheel bearing has been replaced on a front wheel drive vehicle. Which of the following is true concerning the correct procedure to tighten the drive axle nut? A. The nut should be tightened then backed off one flat. B. The nut should be tightened to the torque specification. C. The nut should be adjusted to allow the wheel bearing to have 0.0010"-0.0050" D. The self locking nut should be reused. - When bench bleeding the master cylinder which statement is true? A. The piston should be stroked until bubbles start to flow. B. The piston should be stroked until bubbles stop flowing. C. Mineral spirits should be used. D. Mineral oil should be used. - Which of the following is most likely to use a single channel ABS system? A. Front-wheel drive B. Rear-wheel drive C. Four-wheel drive D. All-wheel drive - 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? A. Brake shoes were incorrectly installed. B. Brake pads were incorrectly installed. C. The master cylinder was incorrectly installed. D. The antilock braking system (ABS) sensors were not properly reset. - A single channel ABS system will have ABS installed on: A. The front wheels only. B. The left side only. C. The rear wheels only. D. The right side only. - 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? A. A B. B C. Both A and B D. Neither A nor B - Technician A says if a vehicle has a floating rear disc brake caliper the parking brake actuation mechanism will be inside the caliper piston. Technician B says if a vehicle has a fixed rear disc brake caliper the parking brake may be inside the disc brake rotor. Who is correct? A. A B. B C. Both A and B D. Neither A nor B - 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? A. A B. B C. Both A and B D. Neither A nor B - 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? A. A only B. B only C. Both A and B D. Neither A nor B - 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. Who is correct? A. A only B. B only C. Both A and B D. Neither A nor B - The brake pedal on a vehicle will slowly drop while the vehicle is sitting at a stop light. Which of the following could be the cause? A. A restricted vacuum house B. Externally leaking master cylinder C. A bypassing master cylinder D. A stuck open vacuum check valve - 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) Which of the following should be done? A. Replace the left rotor B. Replace both rotors C. Reuse both rotors D. Replace the right rotor - When installing threaded caliper slide pins, which of the following is the most normal tightening procedure? A. Tighten to 100 ft lbs, then tighten to 250 ft lbs. B. Tighten to 100 ft lbs then back off 1/2 turn. C. Tighten to 25 ft lbs. D. Tighten to 50 ft lbs and back off one turn. - Which of the following is true concerning a non-integral ABS system? A. The master cylinder and booster are mounted separately. B. The ABS controller and master cylinder are mounted together. C. They can use a vacuum brake booster. D. They use an electro-hydraulic pump as a booster. - 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? A. The brake pads B. The rotor C. The hub D. The spindle - 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? A. A B. B C. Both A and B D. Neither A nor B - 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? A. A B. B C. Both A and B D. Neither A nor B - The minimum rotor thickness specification is 1.250" (31.75 mm). Which of the following measurements would indicate the rotor is reusable? A. 1.115" (28.32mm) B. 1.125" (28.57mm) C. 1.225" (31.11mm) D. 1.520" (38.61mm) - The screw threads of the drum brake self adjuster should be lubricated with which of the following? A. Oil B. Chassis grease C. Lubriplate D. Antiseize - 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? A. A B. B C. Both A and B D. Neither A nor B - 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? A. A B. B C. Both A and B D. Neither A nor B - Which of the following is true concerning an integral ABS system? A. The master cylinder and booster are separately mounted. B. The ABS controller and master cylinder are separately mounted. C. They use a vacuum brake booster. D. They use an electro-hydraulic pump. (Answer:) ASE BRAKES Exam #4 (Answered) Spring . - A wheel cylinder has been honed. It should be cleaned with: A. Alcohol. B. Mineral spirits. C. Penetrating solvent. D. Rust preventive. - Technician A says after bench bleeding the master cylinder it can be reinstalled. Technician B says after bench bleeding, the master cylinder should be emptied. Who is correct? A. A B. B C. Both A and B D. Neither A nor B - The metering valve: A. Limits front brake application until the rear brakes apply. B. Limits rear brake application until the front brakes apply. C. Limits front brake application based on vehicle height. D. Limits rear brake application based on vehicle height. - What measurement is performed on a disc brake rotor using a single dial indicator? A. Rotor lateral runout B. Rotor radial runout C. Rotor thickness variation D. Rotor imbalance - Which of the following would be most likely to cause a brake fluid leak on a disc brake caliper assembly? A. Piston seal B. Piston boot C. Caliper slide pins D. Caliper slide bushings - A vehicle is equipped with a disc/drum brake system. When the customer pulls the parking brake lever the lever travels it's 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? A. A B. B C. Both A and B D. Neither A nor B - Brake shoe lubricant should be applied: A. To the shoe where it contacts the drum. B. To the shoe where it contacts the backing plate. C. To the drum where it contacts the hub. D. To the drum where it contacts the axle. - Four channel ABS sensors will have how many ABS wheel speed sensors? A. Two B. Four C. Six D. Eight - Technician A says the same tool is used to make a double flare or ISO flare. Technician B says the same tool is used to make a double flare and a single flare. Who is correct? A. A B. B C. Both A and B D. Neither A nor B - The right rear brake is dragging on a vehicle with independent rear suspension. All other brakes operate normally. Which of the following could be the cause? A. Damaged right front brake line B. Damaged right rear brake line C. Damaged left rear brake line D. Damaged left front brake line - The technician is counting the "clicks" before the parking brakes applies. Which of the following is generally considered the maximum number for a proper parking brake adjustment? A. 5 B. 10 C. 15 D. 20 - The technician measures the front rotors; the results are listed below: Minimum Rotor Thickness, Specifications: .898" (22.80mm) Actual Rotor Thickness, Left: .889" (22.58mm) Actual Rotor Thickness, Right: .809" (25.12mm) Which of the following should be done? A. Replace the left rotor. B. Replace both rotors. C. Reuse both rotors. D. Replace the right rotor. - Which of the following statements is true concerning the brake warning lights? A. The master cylinder can cause the amber light to illuminate. B. The master cylinder can cause the red light to illuminate. C. If the amber light is illuminated the vehicle must be pulled to the side of the road and towed. D. If the amber light is illuminated there is a possible hydraulic imbalance. - Which of the following would best describe the burnishing procedure? A. Five complete stops from 30 MPH B. Twenty slow-downs from 50 MPH C. Five slow-downs from 50 MPH to 30 MPH D. Fifty slow-downs from 50 MPH to 30 MPH - Which of the following would most commonly be used as the spindle nut on a set of tapered roller bearings? A. Self-locking nylon insert nut B. Castellated (slotted) nut with a cotter pin C. Double nuts with a lock between them D. Self-locking crimp style nut - Which one of the following methods of brake bleeding typically requires two technicians? A. Gravity bleeding B. Brake pedal bleeding C. Vacuum bleeding D. Pressure bleeding - A height sensing proportioning valve would be located on: A. The left front. B. The right front. C. The rear in the center. D. Only on all wheel drive vehicles. - A vehicle had worn pads and they were replaced; now the vehicle's stopping power is poor. This is most likely caused by: A. Contaminated brake fluid. B. Air in the system. C. Improper break-in procedure. D. Faulty master cylinder. - Technician A says ABS trouble codes can usually be retrieved using a scan tool. Technician B says codes can usually be cleared using a scan tool. Who is correct? A. A B. B C. Both A and B D. Neither A nor B - Technician A says the primary show goes toward the front of the vehicle. Technician B says the secondary shoe goes toward the rear of the vehicle. Who is right? A. A B. B C. Both A and B D. Neither A nor B - The flexible rubber brake hose connecting to the caliper is being replaced. Which of the following should also be replaced? A. The caliper B. The banjo bolt C. The sealing washers D. The steel brake line - The hydro-boost belt drive pump is being tested. Which of the following would normally be considered the maximum pump pressure specification? A. 750 psi B. 1000 psi C. 1500 psi D. 2000 psi - The rotor thickness specification is 1.250" (31.75mm). In three places the rotor measures 1.350" (34.29mm). In a fourth place the rotor measures 1.248" (31.70mm). Which of the following is true? A. The rotor should be turned to the smallest measurement and reused. B. The rotor should be reused as is. C. The rotor should be replaced. D. The measurement was performed incorrectly. - The technician is preparing to do a brake job on a vehicle equipped with a non-integral ABS system. Which of he following should the technician do? A. Pump the pedal 25-40 times. B. Support the vehicle on a jack. C. Suppose the vehicle on jack stands. D. Release the vacuum from the brake booster. - Which is true concerning measuring a rotor for thickness variation? A. The rotor should be hot when this measurement is taken. B. The wheel bearing should be tightened when the measurement is taken. C. The measurement should be taken in several locations around the rotor. D. The caliper must be removed before this measurement can be taken. - While testing a vehicle equipped with a vacuum brake booster, if the engine is shut off and pressure applied to the brake pedal the pedal is hard and firm. Otherwise the brakes function normally. Which of the following is indicated by this test result? A. A restricted vacuum hose B. A leaking master cylinder C. A leaking vacuum check valve D. Air in the brake system - A pressure gauge is installed in the bleeder screw port of a disc brake caliper, the brake pedal is depressed, and the gauge pressure indicates 750 psi. The pedal is held steady and the engine is started; the gauge pressure does not change. Which of the following is indicated? A. This is a normal condition. B. The combination valve is leaking. C. The combination valve is restricted. D. The brake booster is not functioning. - A vehicle equipped with a hydro-boost system is leaking fluid where the booster and master cylinder meet. Which of the following is true? A. A leak here can only come from the booster assembly. B. A leak here can only come from the master cylinder. C. A pink fluid here would indicate a brake fluid leak. D. A pink fluid here would indicated a power steering fluid leak. - An ABS hydraulic control unit (HCU) makes a clicking noise for approximately 5 seconds after starting the vehicle. Which of the following is indicated? A. Faulty ABS module B. Faulty ABS hydraulic unit C. The ABS electronic control module (ECM) is bleeding the brakes. D. The ABS ECM is performing a self-test. - Technician A says the primary shoe has the long pad. Technician B says the secondary show is the short pad. Who is correct? A. A B. B C. Both A and B D. Neither A nor B - The brake warning lamp pictured above stays on any time the ignition switch is on. Technician A says this could be caused by an open at the parking brake switch. Technician B says this could be caused by an open at the brake warning lamp switch. Who is correct? A. A B. B C. Both A and B D. Neither A nor B - The customer feels a rapid pedal pulsation under normal braking conditions. This could be caused by all of the following EXCEPT: A. Different size tires. B. A damaged reluctor wheel. C. Excessive reluctor to sensor gap. D. Open circuit to the speed sensor. - The master cylinder cover is removed and the steering wheel is rocked back and forth. The fluid in the master cylinder moves as the steering wheel is turned. Which of the following is the most likely cause? A. Warped brake rotor B. Worn caliper piston C. Seized sliding caliper D. Loose wheel bearings - The technician has measured the rotor in 12 locations. Which variation in the readings would indicate a failed rotor? A. 0.0001" (0.00254mm) B. 0.0005" (0.0127mm) C. 0.001" (0.0254mm) D. 0.005" (0.127mm) - What is the proper brake bleeding sequence? A. RR, LF, LR, RF B. LR, RF, LF, RR C. LR, LF, RR, RF D. RR, LR, RF, LF - When installing a disc brake caliper boot the technician should stop driving when: A. The driving tool is flush with the caliper. B. The driving tool is below the caliper surface. C. The seal is flush with the caliper. D. The sound changes to a dull thud. - Which of the following would most commonly be used as the drive axle retaining nut on a front wheel drive vehicle? A. Self-locking nylon insert nut . B. Plain hex nut without a locking feature. C. Double nuts with a lock between them. D. Self-locking crimp style nut. - While testing a brake system with a vacuum brake booster the technician finds that if the engine is started with pressure applied to the brake pedal the pedal will drop about 1/2 inch. Which of the following is indicated by this test result? A. A restricted vacuum hose B. A leaking master cylinder C. A bypassing master cylinder D. A normally operating booster - With the vehicle supported on a frame hoist and the ignition on, the technician spins one front wheel by hand. The ABS lamp illuminated. This indicates: A. A faulty front wheel speed sensor. B. A faulty rear wheel speed sensor. C. A faulty ABS control unit. D. Normal operation. (Answer:) ASE BRAKES Exam #5 (Answered) Latest Spring . - Rotor lateral runout is greater than specification. This would most likely result in: A. Vibration while braking. B. Spongy brakes. C. A hard brake pedal. D. A low brake pedal. - Technician A says the parking brake adjustment may prevent the drum from fitting over new brake shoes. Technician B says some parking brakes are adjustable at the parking brake lever. Who is correct? A. A B. B C. Both A and B D. Neither A nor B - On a three-channel ABS system: A. The front wheels will share an ABS sensor. B. The rear wheels will share an ABS sensor. C. The left side will share an ABS sensor. D. The right side will share an ABS sensor. - The drum brake squeaks when the brakes are applied. Technician A says the shoes may be worn out. Technician B says the drum may be out of round. Who is correct? A. A B. B C. Both A and B D. Neither A nor B - A car with a vacuum brake booster is idling too fast. When the vacuum line going to the brake booster is crimped shut the idle decreases to normal. Which of the following is the most likely cause? A. The vacuum check valve is leaking. B. The metering valve is leaking. C. The proportioning valve is leaking. D. The brake booster is leaking. - A vehicle pulls to the left while braking. All of the following could cause this EXCEPT: A. Sticking right front caliper piston. B. Sticking metering valve. C. Worn suspension components. D. Restricted right front brake line. - The parking brake will not fully release. All of the following could be the cause EXCEPT: A. Air in the brake fluid. B. Binding parking brake cable. C. Broken return spring. D. Rusted actuator piston. - The disc brake rotor thickness variation is greater than specification. This would most likely result in: A. Pedal pulsation. B. Spongy brakes. C. A hard brake pedal. D. A low brake pedal. - The height sensing proportioning valve: A. Limits the rear brake pressure when the rear is fully loaded. B. Limits the rear brake pressure when the rear is lightly loaded. C. Limits the front brakes when the front is fully loaded. D. Limits the front brakes when the front is lightly loaded. - A vehicle is equipped with a vacuum brake booster. When the engine is running and the brakes are applied there is a constant sound of air movement (vacuum) around the brake pedal area. Technician A says the vacuum check valve is leaking. Technician B says the vacuum booster is leaking. Who is correct? A. A B. B C. Both A and B D. Neither A nor B - Technician A says some wheel speed sensors are adjusted using a feeler gauge. Technician B says some ABS wheel speed sensors are adjusted using a paper spacer, which comes with the new wheel speed sensor. Who is correct? A. A B. B C. Both A and B D. Neither A nor B - The technician is replacing a section of steel brake line. The brake line should be cut with a: A. Hacksaw. B. Tubing cutter. C. Torch. D. Pipe cutter. - Which of the following would be considered maximum thickness variation for a disc brake rotor? A. 0.0005" B. 0.002" C. 0.010" D. 0.025" - Which of the following would cause a glazed drum? A. A dragging shoe B. Air in the hydraulic system C. Missing brake shoe lining D. A frozen wheel cylinder - The parking brake will not apply. All of the following could be the cause EXCEPT: A. A broken parking brake cable. B. A broken return spring. C. A loose drum brake adjustment. D. A stretched parking brake cable. - Replacement metal brake lines should be constructed of: A. Copper. B. Steel. C. Aluminum. D. Brass. - Technician A says digital wheel speed sensors will have voltage supplied to them through the ABS control module. Technician B says digital wheel speed sensors are tested using an ohmmeter. Who is correct? A. A B. B C. Both A and B D. Neither A nor B - While installing the disc brake caliper boot it is ripped. Technician A says this will cause a brake fluid leak. Technician B says this will cause a low, soft brake pedal. Who is correct? A. A B. B C. Both A and B D. Neither A nor B - A vehicle which has poor brake performance also has a high, hard brake pedal. Technician A says there may be air in the system. Technician B says the brakes may be out of adjustment. Who is correct? A. A B. B C. Both A and B D. Neither A nor B - Technician A says installing a tire with a different diameter than what was originally installed on the vehicle may set an ABS code. Technician B says using DOT 3 instead of DOT 4 brake fluid may set an ABS code. Who is correct? A. A B. B C. Both A and B D. Neither A nor B - When the brake pedal is depressed, the rubber brake line connecting to the disc brake caliper swells. Which of the following is true? A. The caliper piston is stuck. B. The sliding caliper is stuck. C. The master cylinder is over pressurizing the hose. D. The hose should be replaced. - Technician A says wheel bearings which are adjusted too tight can cause a wheel to lockup. Technician B says wheel bearings which are adjusted too tight will set an antilock braking system (ABS) trouble code. Who is correct? A. A B. B C. Both A and B D. Neither A nor B - Which of the following could cause low vacuum to the booster with the engine running? A. A stuck open vacuum check valve. B. A loose exhaust manifold. C. A cracked intake manifold. D. A stuck closed metering valve. - When installing a disc brake caliper boot which of the following is true concerning tool lubrication? A. The tool should be coated with brake fluid. B. The tool should be coated with engine oil. C. The tool should be dry. D. The tool should be coated with lubricating oil. - After several brake applications all the brakes drag on a vehicle. Technician A says the compensating port may be covered. Technician B says the replenishing port may be covered. Who is correct? A. A B. B C. Both A and B D. Neither A nor B - A digital wheel speed sensor is being checked. When the sensor is disconnected the technician finds 5 V DC on the control module side of the connector. Which of the following is true? A. The voltage should be 12 V DC during this check. B. There should be no voltage present. C. There should be 2 V AC during this check. D. The test is being performed incorrectly. - The parking brake will not apply. Which of the following could be the cause? A. Misadjusted parking brake cable B. Misadjusted stop light switch C.Leaking vacuum booster check valve D. Leaking vacuum booster - The purpose of bleeding the hydraulic system after a repair is: A. To remove moisture from the system. B. To flush old brake fluid from the system. C. To clean debris from the master cylinder. D. To remover air from the system. - The technician measures the rear rotors; the results are listed below: Minimum Rotor Thickness, Specification: 1.200" (30.48mm) Actual Rotor Thickness, Left: 1.054" (26.77mm) Actual Rotor Thickness, Right: 1.230" (31.24mm) Which of the following should be done? A. Replace the left rotor. B. Replaced both rotors. C. Reuse both rotors. D. Replace the right rotor. - When bleeding the brakes using the brake pedal, which of the following is true? A. Loosen the bleeder screw and pump the pedal. B. Make quick pedal applications then loosen the bleeder screw. C. Slowly apply the brake pedal, closing the bleeder screw before the end of the stroke. D. Stroke the pedal all the way to the floor. - Technician A says the parking brakes should be adjusted before the service brakes. Technician B says that a stretched parking brake cable can use the parking brake to drag. Who is correct? A. A B. B C. Both A and B D. Neither A nor B - Which of the following would indicated maximum allowable runout of a disc brake rotor? A. 0.0005" B. 0.0002" C. 0.0004" D. 0.0020" - Technician A says a scan tool may be necessary to bleed the brakes on an ABS equipped vehicle. Technician B says bleeding brakes on an ABS equipped vehicle may be a two-technician job. Who is correct? A. A B. B C. Both A and B D. Neither A nor B - When the brake pedal is depressed fluid leaks from the rear of the master cylinder. This could be caused by: A. A leaking primary piston seal. B. A leaking secondary piston seal. C. A leaking primary cup. D. A leaking secondary cup. - The brake pedal has a pulsation when the brakes are applied. Technician A says the drum amy be out of round. Technician B says the drum may be glazed. Who is correct? A. A B. B C. Both A and B D. Neither A nor B - The technician makes one measurement on a disc brake rotor with a micrometer. Which of the following is being measured? A. Brake rotor diameter B. Brake rotor thickness C. Brake rotor lateral runout D. Brake rotor thickness variation - The ABS controller has stored a code for the left front wheel speed sensor. All of the following could be the cause EXCEPT: A. A wheel speed sensor resistance reading of 0.2 ohms. B. Mismatched tire diameters. C. A loose wheel bearing on the left front. D. A loose wheel bearing on the right front. - While testing the vacuum brake booster the technician finds that if the engine is started with pressure applied to the brake pedal the pedal does not move. Which of the following is indicated by this test result? A. A restricted vacuum hose B. A leaking master cylinder C. A bypassing master cylinder D. A normally operating booster