Download Michigan State Brakes Certification Exam 2025: Updated Questions and Answers and more Exams Mechanics in PDF only on Docsity!
Michigan State Brakes Certification Exam 2025
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Upon inspecting brake fluid condition, the technician observes the diaphragm in the master cylinder cup is swollen. Which of the following is the most likely cause? ---------CORRECT ANSWER-----------------silicone fluid added to the system When inspecting brake fluid levels, a technician observes low fluid levels. which of the following should be done first? ---------CORRECT ANSWER-----------------Inspect disc brake pads for excessive wear Which of the following is true about most properly functioning anti-lock brake systems? ---------CORRECT ANSWER-----------------The brakes may lock up at speeds less than 10 miles per hour Which of the following is true about bleeding brake lines on most ABS equipped vehicles? ---------CORRECT ANSWER-----------------Most ABS brake lines can be bled like a conventional (non-ABS) system. However, caution must be taken because of the extreme pressure.
Most anti-lock brake systems require the removal of the pressure modulator fuse when: ---------CORRECT ANSWER-----------------a "spaced-saver" spare tire is being used and mismatched tires are being installed What does a load sensing proportioning valve do? ---------CORRECT ANSWER-------- ---------It increases the hydraulic pressure during braking at the rear wheel cylinders when the vehicle is loaded The front brakes of a car equipped with disc brakes in the front and drum brakes in the rear, grab quickly as light pressure is applied to the brake pedal, which of the following could be the cause of the problem? ---------CORRECT ANSWER--------- --------Defective metering valve The brake warning light on the dash stays on all the time, which of the following could be the cause of the problem? ---------CORRECT ANSWER-----------------A problem in the hydraulic circuit Which of the following would be the LEAST likely cause for an intermittent problem in an ABS system? ---------CORRECT ANSWER-----------------Open wheel sensor circuit
While test driving a car, the mechanic finds that the right front brake "grabs". The most likely cause of this problem is: ---------CORRECT ANSWER-----------------brake fluid or grease on the brake linings Wheel speed sensors: ---------CORRECT ANSWER-----------------send an A/C signal to the control module Which of the following incorrect service procedures will cause brake lock up? ------ ---CORRECT ANSWER-----------------Master Cylinder push rod adjusted too long During a road test, you find that when normal breaking pressure is applied the pedal slowly goes to the floor. What is the likely cause of this problem? --------- CORRECT ANSWER-----------------A leaking master cylinder primary piston seal. Before replacing a hydralic brake hose on an ABS equipped vehicle, you should first: ---------CORRECT ANSWER-----------------relieve brake system pressure according to manufacturer procedures When would the pump motor be activated in an anti-lcok brake system with traction assist? ---------CORRECT ANSWER-----------------when brake pedal pulsates
There is a scraping sound coming from one rear brake. The sound stops when the brakes are applied. What is most likely the cause of the problem? ---------CORRECT ANSWER-----------------a broken shoe hold-down spring or pin Most 1995 & newer vehicles use which of the following types of wheels bearings on non-drive wheel? ---------CORRECT ANSWER-----------------Sealed non- serviceable To test a vacuum power brake booster in the vehicle, you should pump the brake pedal at least 4 times, hold the brake pedal depressed, and start the engine. the brake pedal should: ---------CORRECT ANSWER-----------------drop slightly and remain firm You are installing a set of brake shoe linings that are not the same length. Traditionally, the primary shoe lining is: ---------CORRECT ANSWER----------------- Smaller and goes towards the front of the car. A cracked or torn vacuum diaphragm in a brake power booster would most likely cause: ---------CORRECT ANSWER-----------------a hard pedal feel requiring very high pedal effort to stop
On a 3-channel system, which wheels are on the same circuit? ---------CORRECT ANSWER-----------------both rear wheels One way to test an ABS wheel speed signal is to use _____ on your digital multimeter. ---------CORRECT ANSWER-----------------AC volts The key input for the ABS control module comes from the: ---------CORRECT ANSWER-----------------wheel speed sensors ABS speed sensor and sensor rings: ---------CORRECT ANSWER-----------------should not be hammered or tapped on and should always be replaced as a matched set Flexible brake hoses should be replaced: ---------CORRECT ANSWER----------------- when dampness is evident on the hose Which of the following should be used to check for rotor thickness variation: ------- --CORRECT ANSWER-----------------Micrometer After rebuilding a master cylinder, the rod between the master cylinder and booster should be: ---------CORRECT ANSWER-----------------adjusted properly
The brakes of a car squeal each time they are applied, which of the following is the LEAST likely source of the noise? ---------CORRECT ANSWER-----------------Glazed brake pads Which of the following is a true statement about proportioning valves? --------- CORRECT ANSWER-----------------They provide better braking balance during hard stops A properly functioning load sensing proportioning valve will: ---------CORRECT ANSWER-----------------cause an increase in the hydraulic pressure during braking at the rear wheel cylinders when the vehicle is loaded. Why don't disc brake system usually need adjustment? ---------CORRECT ANSWER- ----------------A certain amount of pressure is maintained by the metering valve If a drum brake self-adjuster seizes up, the likely result will be: ---------CORRECT ANSWER-----------------NOT a low pedal, worn or brake drum, or a loose emergency brake cable.
In disc brake caliper assemblies, the "square cut seal" is usually located: --------- CORRECT ANSWER-----------------In the caliper piston bore When performing a caliper overhaul, what would you use to remove the pistons from the calipers? ---------CORRECT ANSWER-----------------Compressed air Sliding caliper disc brake pads are kept in adjustment by the ---------CORRECT ANSWER-----------------Square cut piston seal When the brakes are applied on a car with disc-drum brakes, a vibration or pulsating movement is felt. What can cause this problem? ---------CORRECT ANSWER-----------------A rotor thickness variation A rattle is a single piston disc brake assembly which goes away when the brakes are applied is most likely a result of: ---------CORRECT ANSWER-----------------Loose pads in the caliper Which of the following would most likely cause dragging brakes? ---------CORRECT ANSWER-----------------A defective vehicle load sensor
There is a scraping sound coming from one rear brake. The sound stops when the brakes are applied. What is the likely cause of the problem? ---------CORRECT ANSWER-----------------A broken shoe hold-down spring or pin Which of the following can be used to check for rotor thickness variation? --------- CORRECT ANSWER-----------------Dial indicator On a vehicle with a disc/drum brake system, the rear wheels lock up under hard braking. The most likely cause is: ---------CORRECT ANSWER-----------------A defective proportioning valve After putting a bearing race in a hub, you notice that the new race is loose and can spin in the hub. What should you do? ---------CORRECT ANSWER----------------- Replace the hub When adjusting disc-drum brakes, you should: ---------CORRECT ANSWER------------- ----Adjust the rear brakes after releasing the parking brakes You are rebuilding a master cylinder. What should you use to lubricate the internal parts? ---------CORRECT ANSWER-----------------Brake fluid
A car has an excessive amount of pedal travel during brake application, which of he following could be the cause? ---------CORRECT ANSWER-----------------Excessive clearance between the shoes and drum. All of the following procedures, EXCEPT one describe the correct method for bleeding the individual brakes on a car after the master cylinder has been bled: --- ------CORRECT ANSWER-----------------The bleeding sequence for all systems begins with the left rear wheel. Which of the following is the LEAST likely cause of one brake dragging? --------- CORRECT ANSWER-----------------A corroded master cylinder bore A car has a spongy pedal. Which of the following could be the cause? --------- CORRECT ANSWER-----------------Air in the system. Which of the following is not correct in the procedure for preparing a brake rotor for matching? ---------CORRECT ANSWER-----------------Use a brake micrometer to measure the diameter A car equipped with a vacuum assist power brake system reads an abnormal amount of pedal effort to stop the car, which of the following could be the cause? ---------CORRECT ANSWER-----------------A plugged booster air breather
All of the following, EXCEPT one could cause the parking brakes to fail or not hold: ---------CORRECT ANSWER-----------------Air in the system An example of an incorrect procedure for replacing brake pads in a disc brake system is: ---------CORRECT ANSWER-----------------Remove the piston from the caliper and clean all rust corrosion, and dirt A car's wheels severely vibrate when the brakes are applied, which of the following is the LEAST likely source of he problem? ---------CORRECT ANSWER------- ----------The master cylinder If vacuum is present on both sides of the diaphragm in a brake booster: --------- CORRECT ANSWER-----------------The brakes are being released Which of the following is not a necessary precaution to follow when performing brake repairs on an ABS equipped vehicle? ---------CORRECT ANSWER----------------- Always remove the electronic brake control module fuse before adjusting or replacing a wheel speed sensor
