CONTENTS OF THIS PACKET
This packet contains the following information regarding mechanic testing, certification, and trainee permit:
Information for the Mechanic Trainee
Locating Secretary of State Branch Offices & Test Tips
Mechanic Certification Frequently Asked Questions
Mechanic Study Guides
Read the information in this packet carefully. Then, if you have further questions about the materials, contact the
Business Licensing Section at 1-888-SOS-MICH (1-888-767-6424).
INFORMATION FOR THE MECHANIC TRAINEE
There are two ways a person can obtain the skills needed to be a mechanic. The first is by going to a school
which offers automotive training. This usually includes hands-on learning along with classroom studies. The other
way is by working at a repair shop with an experienced mechanic who can teach proper repair methods and see
that the work done by the trainee is correct.
Most good mechanics have learned their trade by both schooling and experience on the job. Today's cars and
trucks are becoming more and more complicated to repair. This means that both training and experience are
more important than ever to the person who wants to earn a living as a mechanic.
If you are currently performing major repairs on motor vehicles in Michigan, you must be a certified mechanic or
hold a valid trainee permit.
A mechanic trainee permit is valid for a period of two years from the date of issue in the major repair categories
listed on the permit. A permit may not be renewed. Upon expiration of the trainee permit, a mechanic trainee must
either become certified or stop performing repairs in the categories listed on the permit.
A mechanic trainee may perform repairs only in the categories listed on the permit under the supervision of a
mechanic who is currently certified by the State of Michigan in those repair categories.
A mechanic trainee should display his or her trainee permit in a conspicuous location, and when a mechanic
trainee works on a motor vehicle, his or her name and trainee permit number must appear on the customer's final
invoice. The name and certification number of the supervising mechanic must also appear on the final invoice. It
is the responsibility of trainees and certified mechanics to ensure that their names and numbers are not used
inappropriately by their employers.
The Office of Investigative Services may act to suspend or revoke a mechanic trainee permit if a trainee
misrepresents the need for repairs, performs unnecessary repairs, or makes false or misleading statements in
connection with a diagnosis or repair. In addition, a mechanic trainee may be required to obtain additional training
or discontinue performing certain repairs if it is determined that the mechanic or trainee disregarded or departed
from accepted industry repair standards.
01/23/23
Revised 01/23/2023
MECHANIC TESTING OFFERED AT SELECTED
SECRETARY OF STATE BRANCH OFFICES
The Office of Investigative Services offers mechanic tests at Secretary of State branch offices
around the state with at least one branch in every county. To schedule an appointment at a branch
office, access the Secretary of State main page at Michigan.gov/sos and select, Schedule an office
visit.
Test Tips:
•
The State mechanic tests contain multiple choice questions and are intended to measure
the minimum competencies necessary to work in a particular area of study. An individual’s
ability to pass an exam depends on the amount of knowledge the person has covering a
specific area, and how the individual interprets the test items. All tests are closed-book
format. No reference materials or electronic devices may be used during testing. Absolutely
no copying of examination items is permitted. Before taking tests, keep these tips in mind:
•
Prepare in advance. It is suggested that individuals reference the State Mechanic Study
Guides in preparation of any one test. Study guides provide a listing of the primary
categories that would be found in a specific specialty area of study along with the specific
sub-category subjects that will make up the test. Each test primary category is also broken
down into percentages of questions asked therefore allowing the individual the ability to
focus more heavily on specific areas of the test.
•
Read each question carefully, including ALL the answers, so that you understand exactly
what is being asked.
•
Answer the questions based ONLY on the choices given. Don’t try to “read into” the question
or add information that is not provided. For many individuals, this is where they fail to answer
the question correctly.
•
Don’t spend too much time on any one question. Try to narrow down your choices and
select the answer you think is most likely correct. Chances are your first guess is the most
correct!
•
Answer every question.
Revised 01/23/2023
Important Reminders:
•
The State of Michigan does not provide or recommend any single educational textbook or
publishing materials for the mechanic certification categories. However, it is recommended that
individuals who prefer home study acquire textbooks like those found in technical skill centers,
and two or 4 four-year colleges.
•
All motor vehicle mechanics performing major repairs for compensation must be certified by the
Michigan Department of State in the categories for which they perform repairs. A person who is
not certified may obtain a trainee permit.
•
A mechanic trainee permit is valid for a period of two years from the date of issue in the major
repair categories listed on the permit. A permit may not be renewed. Upon expiration of the
trainee permit, a mechanic trainee must either become a certified Michigan mechanic or stop
performing repairs in the categories listed on the permit. A mechanic trainee may perform repairs
only in the categories listed on the permit under the supervision of a mechanic who is currently
certified by the State of Michigan in those repair categories.
Further questions regarding mechanic testing may be directed to the Business Licensing Section:
Email: Licensing@Michigan.gov
Telephone: 1-888-SOS-MICH (1-888-767-6424)
01/23/2023
MECHANIC FREQUENTLY ASKED QUESTIONS
MECHANIC CERTIFICATION
1.
Where can I obtain more information on becoming a certified mechanic in Michigan?
Answer:
Additional information is available under “Mechanics” on the Department of State website u
nder Industry
Services.
2.
Who must be a certified mechanic?
Answer:
You must be certified as a mechanic in Michigan if you repair motor vehicles for compensation,
including the reconditioning, replacement, diagnosis, adjustment, or alteration of the operating
condition of the vehicle, or any component or sub-assembly in any category of major repair. If you
perform major repairs and are not certified, you must get a mechanic trainee permit for those repair
categories in which you work.
3.
I have been told that I am exempt from having to become a certified or licensed mechanic in
Michigan if I am currently certified by the National Institute for Automotive Service Excellence
(ASE) in one or more categories. Is this true?
Answer:
No. ASE certification alone does NOT qualify you as a state certified mechanic in Michigan.
However, you may be eligible to apply for state certification and transfer certain ASE categories to
the application in lieu of taking state certification tests. Refer to the ASE Information page or
contact the Business Licensing Section at 888-SOS-MICH (767-6424) for further information.
4.
How do I become a certified mechanic?
Answer:
You must first pass a test for each repair category in which you want certification. Until you have
passed the appropriate tests, you cannot apply for certification. A certification application will be
included with the results letter if you successfully pass your test. Complete the application and return
it with the $25.00 application fee to:
Michigan Department of State
Business Licensing Section
Lansing, Michigan 48918
5.
What does it cost to become a certified mechanic?
Answer:
The fee to become a certified mechanic is $25. The annual renewal fee is $20, or $30 if received
after the renewal date.
01/23/2023
6. What are the motor vehicle repair categories which require state certification?
Answer:
The automobile and light truck repair categories for vehicles under 14,000 pounds GVW are:
1. Engine Repair
2. Engine Tune-up/Performance
3. Front End, Suspension & Steering Systems
4. Brakes & Braking Systems
5. Automatic Transmission
6. Manual Transmission, Front & Rear Drive Axles
7. Electrical Systems
8. Heating & Air Conditioning
9. Pre-1973 Vehicles
The heavy-duty truck repair categories for vehicles over 14,000 pounds GVW are:
1. Engine Repair - Gasoline
2. Engine Repair - Diesel
3. Drive Train
4. Brakes & Braking Systems
5. Suspension & Steering Systems
6. Electrical Systems
Repair categories for other on-road vehicles are:
1.
Collision-Related Mechanical Repair
2.
Unitized Body Structural Repair
3.
Motorcycle
4.
Recreational Trailer
5.
BAIID -- Breath Alcohol Ignition Interlock Device
7.
What is the difference between a “Master Mechanic” and a “Specialty Mechanic”?
Answer:
An individual certified in all of the first eight categories of Automobile and Light Truck Repair is a Master
Automobile Mechanic. Similarly, a mechanic certified in all six categories of Heavy-Duty Truck Repair is a Master
Heavy-duty Truck Mechanic. Individuals with a certification in Motorcycle are also given a master status. A
mechanic certified in seven or fewer of the first eight categories under the automobile and light truck heading, or
five or fewer of the six categories under the heavy-duty truck repair heading or in the ‘other’ category is
considered a Specialty Mechanic.
8.
Does a technician who only does "bench work" (such as rebuilding automotive parts or components) have to
be certified?
Answer:
Yes. When bench work (the rebuilding, reconditioning, machining, or assembling of parts or components from a
motor vehicle) is performed by a technician at a registered repair facility, the technician must be certified as a
mechanic in the proper repair category. This work involves a diagnostic process that is directly related to the
shop's regulated activities. The only time a bench mechanic need not be certified is when the employer is not
required to be a registered motor vehicle repair facility. For example, in a parts store that does not operate a motor
vehicle repair facility (does not diagnose vehicles and does not remove or install parts), the technician turning
brake rotors or rebuilding engines need not be certified.
01/23/2023
9.
How do I renew my mechanic certification license?
Answer:
There are two options for renewing your mechanic license: online or by mail.
To renew your mechanic certification online, go to the website and login.
To renew by mail, return your completed renewal application form and check or money order to:
Michigan Department of State
Business Licensing Section
Lansing, Michigan 48918
MECHANIC TESTING & REGISTRATION
10.
I have worked as a motor vehicle mechanic for many years. Do I have to take the mechanic tests?
Answer:
Yes, you must pass a test for each repair category in which you want to be certified. The law does not provide a
"grandfather clause." The only way to qualify for state certification is to pass the state test or if you have passed
tests administered by the National Institute for Automotive Service Excellence (ASE), you may be eligible to apply
for state certification in certain automobile and heavy duty truck categories without further testing. ASE
certification alone does NOT qualify you as a state certified mechanic. Visit the
ASE to Stat
e of Michigan
Exam Conversion Table page or contact the Business Licensing Section at 888-SOS-MICH (767-6424) for further
information.
11.
Where can I take the mechanic tests?
Answer:
Motor vehicle mechanic tests are available at Secretary of State offices throughout the state. To obtain branch
office location information (address or business hours), visit the Michigan Department of State Branch Office
Locator. You will be required to pre-register prior to taking a test. There is a $6 fee for each test. Tests are offered
on a first-come, first-serve basis. Tests are not available within one hour of closing.
12.
Are the state tests offered in written or electronic format?
Answer:
State mechanic tests are offered electronically at a kiosk with a touch screen.
13.
Will I need to pre-register to take a mechanic test?
Answer:
No. Pre-registration is recommended but not required. Only Michigan residents can pre-register and all
other testers must purchase tests at the branch office. Register here for your mechanic test:
Sign Up for
Mechanic Testing. The online system is available 24 hours a day, seven days a week.
14.
Will I need to bring anything with me to the testing location once I have registered?
Answer:
Yes, you will need to bring a copy of your mechanic payment receipt containing your confirmation number, along
with a driver’s license or state identification card containing your photograph to the mechanic testing location.
01/23/2023
15.
Once I have registered for a test, is there a time limit for taking the test?
Answer:
Yes, you have 180 days from the registration date to complete your test. After 180 days, the test will expire, and a
refund will not be provided. Re-registration will be required at an additional fee of $6 per test.
16.
Will registering for a test require me to select a specific test location?
Answer:
No, you may test at any Secretary of State office in the state.
17.
How will I be notified of my test results?
Answer:
You will be notified of your pass/fail status on the kiosk screen when you complete the test. For all testing formats,
a detailed test result letter will be mailed within seven days of completing your test.
18.
What is the minimum score needed to pass a test?
Answer:
Passing scores vary by test, and the number required to pass a test will display on the testing screen.
19.
In what format are the test questions delivered?
Answer:
The mechanic tests contain multiple-choice questions.
20.
How may questions are on each test?
Answer:
Most tests have roughly 55 questions. The Motorcycle and Auto/LT Pre-1973 are closer to 100 questions.
21.
Can a person who has a disability or difficulty with the English language take the mechanic tests?
Answer:
Yes, visit the following webpage, Mechanic Testing
, and look for “Testing Accommodations” under the Mechanic
testing process section.
22.
I took the state mechanic test and did not pass. Can I take the test again and will I have to pay the test fees
again?
Answer:
Yes, but you may only take each test once per day. You must pay the $6.00 test fee for each test you retake.
23.
Does the state provide study materials or textbooks for my use?
Answer:
Michigan does not provide or recommend any single textbook or published materials for your review when
preparing for the mechanics tests. However, it is recommended that individuals who prefer home study acquire
textbooks similar to those found in technical skill centers, and two- or four- year colleges.
It is suggested that you prepare by reviewing the Mechanic Study Guides. These study guides provide a list of the
categories and subcategories that will be on each test. Each category is given a percentage indicating how many
of the test questions will be drawn from that category. This allows you to plan your study time and concentrate on
those areas that are given the most emphasis on the test.
MECHANIC TRAINEE PERMIT
01/23/2023
24.
What is a mechanic trainee permit?
Answer:
The mechanic trainee permit makes it possible for the non-certified mechanic to work at a repair
facility. A mechanic trainee employed by a repair facility must work under the direct supervision of a
certified specialty or master mechanic
.
25.
How do I apply for a mechanic trainee permit?
Answer:
You must complete an Application for Motor Vehicle Mechanic Trainee Permit. The application is
available online here: Online Mechanic Trainee Application
, or at the Department of State website at:
Mechanic Trainee Permit. Paper applications should be returned with the $20.00 application fee to:
Michigan Department of State
Business Licensing Section
Lansing, Michigan 48918
Note: No fee is required if you are a state-certified mechanic with an unexpired certificate.
26.
What are the repair categories for a mechanic trainee?
Answer:
The mechanic trainee categories are the same as those for mechanic certification. You may obtain a
trainee permit in any number of categories of repair but cannot remain a mechanic trainee in any
single repair category for more than two years. Once expired, trainee permits may not be reissued.
MECHANIC RECERTIFICATION REQUIREMENTS
27.
What is mechanic recertification?
Answer:
If you are an automotive and light truck mechanic certified in Engine Tune-up/Performance, Electrical Systems or
Brakes and Braking Systems, you must comply with one of the following requirements for continuing certification.
Certificates in the three categories noted are good for five years and must be renewed before their expiration date.
All other repair categories are valid for life once issued.
• Pass the latest state mechanic certification test, or
• Show proof of current and appropriate National Institute for Automotive Service Excellence (ASE)
certification, or
• Successfully complete a state-approved training program.
To maintain certification in these categories, mechanics must comply with the recertification requirement before
their certification expiration date, according to the schedule below:
Mechanic Category Recertification Year
Ongoing Recertification
Renewal
Engine Tune-up/ Performance
2018
2018, 2023, 2028
Electrical Systems
2019
2019, 2024, 2029
Brakes & Braking Systems
2020
2020, 2025, 2030
01/23/2023
For example, John Brown's mechanic certificate expires each year on July 16. John last recertified his
Engine Tune-up/Performance certificate on July 16, 2018, making his next recertification date July 16,
2023. He last recertified in Electrical Systems July 16, 2019, so he’ll have to recertify again in July 16,
2024. He’ll have until July 16, 2020 to recertify in Brakes & Braking Systems after meeting the
requirements on July 16, 2025.
If you have additional questions about the Michigan mechanic certification program or
requirements, contact:
Michigan Department of State
Business Licensing Section
Lansing, MI 48918-1210
Telephone: 1-888-SOS-MICH (1-888-767-6424)
11/22/2023
MECHANIC STUDY GUIDES
Automobile & Light Truck
(Vehicles under 14,000 lbs. GVW)
* Engine Repair ................................................................................................. 1
* Automatic Transmission ................................................................................... 2
* Manual Transmission, Front & Rear Drive Axles ............................................. 3
* Front End, Suspension & Steering Systems .................................................... 4
* Brakes & Braking Systems ............................................................................... 5
* Electrical Systems ............................................................................................ 6
* Heating & Air Conditioning ............................................................................... 7
* Engine Tune-up/Performance .......................................................................... 8
*Unitized Body & Structural Repair ..................................................................... 9
*Collision-Related Mechanical Repair .............................................................. 10
Breath Alcohol Ignition Interlock Device (BAIID) .............................................. 13
Heavy-Duty Truck (HDT)
(Vehicles 14,000 Ibs. GVW and higher)
*Engine Repair – Gasoline ............................................................................... 14
*Engine Repair – Diesel ................................................................................... 15
*Drive Train ....................................................................................................... 16
*Brakes & Braking Systems .............................................................................. 17
*Suspension & Steering Systems ..................................................................... 18
*Electrical Systems ........................................................................................... 19
Miscellaneous
*Motorcycle Repair ........................................................................................... 11
Recreational Trailer .......................................................................................... 12
* Denotes tests that have been recently updated.
11/22/2023 1
Mechanic Study Guide
Engine Repair
Automobile & Light Truck Repair
Engine Fundamentals - 12%
Micrometer reading
Bolt head markings
Engine R&R procedures
Engine break in
General Engine Diagnosis - 28%
Oil consumption
Cylinder leakage test
Compression test
Exhaust recognition
Engine sludge/contamination
Vacuum testing
Crankcase pressure/blow-by
Spark plug diagnosis
Engine noise
Power balance testing
Engine Block Diagnosis and Repair - 22%
Engine measurements and clearances
Piston installation
Cleaning and assembling procedures
Piston design
Piston ring diagnosis
Cam bearing installation
Cylinder Head and Valve Train Diagnosis &
Repair - 28%
Valve deposits
Valve train measurements and clearances
Mechanical timing
Variable lift valves
Variable cam timing
Variable displacement
Valve guide wear
Valve spring diagnosis
Noise diagnosis
Camshaft diagnosis
Lubrication and Cooling - 10%
Cooling system diagnosis
Oil pressure diagnosis
Fluid identification
The State of Michigan does not provide or
recommend any single textbook or
published materials for your review when
preparing for the mechanics tests.
However, it is recommended that
individuals who prefer home study acquire
textbooks similar to those found in
technical skill centers, and two- or four-
year colleges. Typically, these types of
textbooks are not found at your local
library but are available through
educational bookstores and various online
automotive publishers.
It is suggested that you prepare by
reviewing the Mechanic Study Guides.
These study guides provide a list of the
categories and subcategories that will be
on each test. Each category is given a
percentage indicating how many of the
test questions will be drawn from that
category. This allows you to plan your
study time and concentrate on those areas
that are given the most emphasis on the
test.
11/22/2023 2
Mechanic Study Guide
Automatic Transmission
Automobile & Light Truck Repair
Internal Operation – 26%
Gear train end play
Band and servo operation
Planetary gear set
Multiple disc clutch packs
Shifting operation
Torque converter
Valve body
Transmission inputs
Electrical/Electronics
General Diagnosis - 31%
Shift quality
Fluid diagnosis
Band / clutch diagnosis
Fluid loss diagnosis
Pressure testing
Valve body diagnosis
Scan tool usage
External control
Transmission noise
Transmission performance
Component Diagnosis - 12%
Hydraulics
Torque converter
Clutch pack
Cooler operation
Solenoid operation and testing
Repair Procedures 13%
Transmission remove & replace
Transmission seals
Pump to converter engagement
Pump operation
Programming / calibration
Fundamentals- 18%
Fluids
Transaxle
Valve body components
General transmission operation
Start / stop operation
High-voltage safety
Valve identification Fluid types
The State of Michigan does not provide or
recommend any single textbook or
published materials for your review when
preparing for the mechanics tests.
However, it is recommended that
individuals who prefer home study acquire
textbooks similar to those found in
technical skill centers, and two- or four-
year colleges. Typically, these types of
textbooks are not found at your local
library but are available through
educational bookstores and various online
automotive publishers.
It is suggested that you prepare by
reviewing the Mechanic Study Guides.
These study guides provide a list of the
categories and subcategories that will be
on each test. Each category is given a
percentage indicating how many of the
test questions will be drawn from that
category. This allows you to plan your
study time and concentrate on those areas
that are given the most emphasis on the
test.
11/22/2023 3
Mechanic Study Guide
Manual Transmission, Front & Rear Drive Axles
Automobile & Light Truck Repair
Transmission/Transaxle Diagnosis - 13%
Fluid and transmission diagnosis
Hard shifting complaints
Transmission vs. transaxle comparison
Transaxle/Transmission gear recognition
Synchronizer problems & operation
Clutch Diagnosis & Repair – 19%
Clutch disc operation
Noise and chatter diagnosis
Shifting problem diagnosis
Hydraulic systems
Component R & R - 10%
Transmission remove and replace
Extension housing seal remove & replace
Synchronizer replacement
Electronic manuals
Final Drive - 30%
Ring gear run-out
Noise diagnosis
Differential diagnosis
Ring & pinion gear sets
Ring & pinion backlash
Pinion bearing pre load
Final drive ratio
Pinion seal remove & replace
Limited slip diagnosis
Differential bearing pre load
Lubricant types
Axle Shaft\CV Repair - 9%
CV boot installation
Drive axle diagnosis
CV joint operation
4WD/AWD Systems – 9%
Transfer case operation
4WD actuators
AWD operation
Miscellaneous - 10%
Bearing types
Gear type identification
Direct drive and gear reduction theory
Driveshaft angle
The State of Michigan does not provide or
recommend any single textbook or
published materials for your review when
preparing for the mechanics tests.
However, it is recommended that
individuals who prefer home study acquire
textbooks similar to those found in
technical skill centers, and two- or four-
year colleges. Typically, these types of
textbooks are not found at your local
library but are available through
educational bookstores and various online
automotive publishers.
It is suggested that you prepare by
reviewing the Mechanic Study Guides.
These study guides provide a list of the
categories and subcategories that will be
on each test. Each category is given a
percentage indicating how many of the
test questions will be drawn from that
category. This allows you to plan your
study time and concentrate on those areas
that are given the most emphasis on the
test.
11/22/2023 4
Mechanic Study Guide
Front End, Suspension & Steering Systems
Automobile & Light Truck Repair
Alignment - 32%
Alignment procedures
Vehicle pull diagnosis
Alignment diagnosis
Steering wheel center
Caster adjustment
Camber adjustment
“Toe” adjustment procedures
Suspension - 29%
Ball joint diagnosis
Measuring curb height
Ball joint remove and replace (R&R) procedure
Strut suspensions
Electronic suspension
Suspension symptom diagnosis
Component wear
Steering - 20%
Rack & pinion diagnosis
Electric power steering
Tie rod end diagnosis
Steering linkage diagnosis
Hydraulic power steering
Fundamentals - 18%
Lug nut torque
Wheel bearing adjustment
Basic alignment angle understanding
Tire wear
The State of Michigan does not provide or
recommend any single textbook or
published materials for your review when
preparing for the mechanics tests.
However, it is recommended that
individuals who prefer home study
acquire textbooks similar to those found
in technical skill centers, and two- or four-
year colleges. Typically, these types of
textbooks are not found at your local
library but are available through
educational bookstores and various
online automotive publishers.
It is suggested that you prepare by
reviewing the Mechanic Study Guides.
These study guides provide a list of the
categories and subcategories that will be
on each test. Each category is given a
percentage indicating how many of the
test questions will be drawn from that
category. This allows you to plan your
study time and concentrate on those
areas that are given the most emphasis
on the test.
11/22/2023 5
Mechanic Study Guide
Brakes & Braking Systems
Automobile & Light Truck Repair
System Diagnosis and Repair - 26%
Hydraulic valves
Brake pedal pulsation
Brake performance
Wheel bearings
Power assist systems
Fundamental procedures
Noise diagnosis
Hydraulics Diagnosis and Repair - 23%
Fluid diagnosis
Line repair
Hydraulic repair
Brake pedal feel
Brake bleeding
Leak diagnosis
Electronic Brake System Diagnosis & Repair -
26%
ABS pump / motor operation
Safety precautions
Speed sensors
Braking electrical diagnosis
Stability control systems
Drum Brake Diagnosis & Repair - 12%
Measuring and refinishing
Drum/Shoe types
Brake adjustment
Leak diagnosis
Parking brake
Brake hardware
Disc Brake Diagnosis & Repair - 12%
Measuring and refinishing
Caliper replacment
Parking brake
Brake hardware
The State of Michigan does not provide or
recommend any single textbook or
published materials for your review when
preparing for the mechanics tests.
However, it is recommended that
individuals who prefer home study
acquire textbooks similar to those found
in technical skill centers, and two- or four-
year colleges. Typically, these types of
textbooks are not found at your local
library but are available through
educational bookstores and various
online automotive publishers.
It is suggested that you prepare by
reviewing the Mechanic Study Guides.
These study guides provide a list of the
categories and subcategories that will be
on each test. Each category is given a
percentage indicating how many of the
test questions will be drawn from that
category. This allows you to plan your
study time and concentrate on those
areas that are given the most emphasis
on the test.
11/22/2023 6
Mechanic Study Guide
Electrical Systems
Automobile & Light Truck Repair
Electrical Fundamentals - 25%
High voltage safety
SIR (Supplemental Inflatable Restraint)
Basic electrical
Series circuit diagnosis
Relay operation
Circuit protection devices
Networking and communication
Testing Equipment Usage - 16%
Ohmmeter usage
Voltmeter usage
Ammeter usage
Voltage drop
High voltage systems
Starting and Charging System Diagnosis -
19%
Batteries
Starter diagnosis
Starter current draw
Starter circuit diagnosis
Generator / alternator diagnosis
Charging system output
Charging system circuit diagnosis
Voltage drop tests
Circuit Diagnosis - 20%
Short to ground
High resistance/open circuit
Blower motor circuit diagnosis
Lighting circuits
Cooling fan circuit
Warning circuits
Accessory circuits
Electrical Diagrams - 20%
Electrical circuit recognition
Diagram usage
The State of Michigan does not provide or
recommend any single textbook or
published materials for your review when
preparing for the mechanics tests.
However, it is recommended that
individuals who prefer home study
acquire textbooks similar to those found
in technical skill centers, and two- or four-
year colleges. Typically, these types of
textbooks are not found at your local
library but are available through
educational bookstores and various
online automotive publishers.
It is suggested that you prepare by
reviewing the Mechanic Study Guides.
These study guides provide a list of the
categories and subcategories that will be
on each test. Each category is given a
percentage indicating how many of the
test questions will be drawn from that
category. This allows you to plan your
study time and concentrate on those
areas that are given the most emphasis
on the test.
11/22/2023 7
Mechanic Study Guide
Heating & Air Conditioning
Automobile & Light Truck Repair
Heating & Engine Cooling System Diagnosis -
21%
Leak diagnosis
Freeze protection
Low heater output
Pressurized systems
Defrost operation
Overheating
General Knowledge of A/C Components &
Their Functions - 19%
Receiver drier / accumulator
Temperature sensors
Refrigerant oil
Compressor clutch
Condenser
Evaporator
Orifice tube
Thermostatic expansion valve
General Knowledge of A/C Systems - 12%
Refrigerant types
Refrigerant states
Operating pressures
A/C Diagnosis - 26%
Condensation
Leak detection
Overcharged/undercharged system
Compressor clutch
Gauge set readings
Lack of cold air
Electrical schematic interpretation
Air delivery
A/C Repair Procedures - 18%
Recovering refrigerant
Seal replacement
Compressor replacement
Charging the system
Component replacement
Refrigerant Recovery, Recycling & Handling -
4%
Refrigerant environmental concerns
Recycling or recovering refrigerant
The State of Michigan does not provide or
recommend any single textbook or
published materials for your review when
preparing for the mechanics tests.
However, it is recommended that
individuals who prefer home study
acquire textbooks similar to those found
in technical skill centers, and two- or four-
year colleges. Typically, these types of
textbooks are not found at your local
library but are available through
educational bookstores and various
online automotive publishers.
It is suggested that you prepare by
reviewing the Mechanic Study Guides.
These study guides provide a list of the
categories and subcategories that will be
on each test. Each category is given a
percentage indicating how many of the
test questions will be drawn from that
category. This allows you to plan your
study time and concentrate on those
areas that are given the most emphasis
on the test.
11/22/2023 8
Mechanic Study Guide
Engine Tune-up/Performance
Automobile & Light Truck Repair
Electronic Controls - 29%
Programming / memory
Fault codes
Closed loop
Sensor diagnosis
Oxygen sensor operation
Position sensor reading
Multimeter usage
Scan tool usage
Ignition Systems - 13%
Timing recognition
No spark diagnosis
Causes of detonation
Spark plug diagnosis
Fuel System - 24%
Injector pulse width
Fuel line replacement
Fuel injection principals
Causes of a rich mixture
Causes of a lean mixture
Fuel quality/content
Turbocharger
Diagnosis - 18%
Engine mechanical timing
Circuit resistance checks
Engine vacuum
Catalytic converter
Cylinder leakage
Compression test
Emission Control Systems – 16%
EGR operation
Evaporative emission control system
Catalytic converter
General emissions
The State of Michigan does not provide or
recommend any single textbook or
published materials for your review when
preparing for the mechanics tests.
However, it is recommended that
individuals who prefer home study
acquire textbooks similar to those found
in technical skill centers, and two- or four-
year colleges. Typically, these types of
textbooks are not found at your local
library but are available through
educational bookstores and various
online automotive publishers.
It is suggested that you prepare by
reviewing the Mechanic Study Guides.
These study guides provide a list of the
categories and subcategories that will be
on each test. Each category is given a
percentage indicating how many of the
test questions will be drawn from that
category. This allows you to plan your
study time and concentrate on those
areas that are given the most emphasis
on the test.
11/22/2023 9
Mechanic Study Guide
Unitized Body Structural Repair
Automobile & Light Truck Repair
Materials
(Characteristics & Identification) - 17%
Aluminum
UHSS (Ultra High Strength Steel)
HSS (High Strength Steel)
Plastics
Material Joining – 23%
Flow drill screws
Self piercing rivets
Adhesives
Characteristics of:
MIG/GMAW
STRSW/Spot welding
TIG/GTAW
Oxy/Acetylene
Welding precautions
Shielding gas
Repairing Structural Components - 21%
Structural component identification
Sectioning
Types of welds:
Fillet
Plug
Butt with backing
Open Butt
Anchoring
Corrosion protection
Glass Replacement and Installation – 5%
Types of glass
Measuring/Damage Analysis - 25%
Point to point
Direct damage
Indirect damage
Primary damage
Secondary damage
Types of damage:
Mash
Sway
Sag
Twist
Diamond
Datum plane
Vehicle centerline
Asymmetrical dimensions
Unitized Body General Understanding - 10%
Crush zones
Design features which initiate the crush process
Manufacturers’ tolerances
One-time fasteners
The State of Michigan does not provide or
recommend any single textbook or
published materials for your review when
preparing for the mechanics tests.
However, it is recommended that
individuals who prefer home study
acquire textbooks similar to those found
in technical skill centers, and two- or four-
year colleges. Typically, these types of
textbooks are not found at your local
library but are available through
educational bookstores and various
online automotive publishers.
It is suggested that you prepare by
reviewing the Mechanic Study Guides.
These study guides provide a list of the
categories and subcategories that will be
on each test. Each category is given a
percentage indicating how many of the
test questions will be drawn from that
category. This allows you to plan your
study time and concentrate on those
areas that are given the most emphasis
on the test.
11/22/2023 10
Mechanic Study Guide
Collision-Related Mechanical Repair
Automobile & Light Truck Repair
Steering and Suspension - 13%
Component identification
Alignment adjustments
Steering column diagnosis
Rack & pinion
Power steering
Heating & Cooling - 10%
General questions
Electrical - 33%
Wire repair
Symbol identification
Circuit diagnosis
ADAS system
Sensor diagnosis / repair
Module replacement
High voltage safety
Airbag safety
Restraint Systems – 11%
Airbag inspection
Airbag damage
Airbag replacement
Pretensioner
Drive Train - 15%
Vibration diagnosis
Noise diagnosis
Transaxle
Bent parts
Brakes - 11%
Brake bleeding
Brake line
ABS
Miscellaneous - 7%
Tire identification
Wheel diagnosis
The State of Michigan does not provide or
recommend any single textbook or
published materials for your review when
preparing for the mechanics tests.
However, it is recommended that
individuals who prefer home study
acquire textbooks similar to those found
in technical skill centers, and two- or four-
year colleges. Typically, these types of
textbooks are not found at your local
library but are available through
educational bookstores and various
online automotive publishers.
It is suggested that you prepare by
reviewing the Mechanic Study Guides.
These study guides provide a list of the
categories and subcategories that will be
on each test. Each category is given a
percentage indicating how many of the
test questions will be drawn from that
category. This allows you to plan your
study time and concentrate on those
areas that are given the most emphasis
on the test.
11/22/2023 11
Mechanic Study Guide
Motorcycle Repair
Automobile & Light Truck Repair
Fuel Systems - 21%
Lean / rich mixture identification
Causes of a lean mixture
Causes of a rich mixture
Exhaust color diagnosis
Backfire diagnosis
Carburetor components and operation
Fuel Injection components and operation
Spark plug fouling and diagnosis
Fuel pressure
Oxygen sensor operation
Measuring and Tools - 11%
Using Plastigage
Using a dial indicator
Using a Volt-Ohm meter
Using a bore gauge
Using a feeler gauge
Using a micrometer
Shaft run out
Understanding decimal equivalents up to 1/1000”
Piston ring end-gap
Understanding metric system measurements
Compression / leak down testing
Ignition and Electrical - 20%
Types of position sensors and their function
Function of a relay / solenoid
Function of a stator / rotor
Function of a regulator / rectifier
Ignition coil diagnosis
Splicing electrical connections
Continuity testing
Voltage drop
Parasitic draw
Diagnosing turn signal circuits
Alternator output problems
Drive Train - 9%
Clutch operation and diagnosis
Transmission shifting problems
Drive chain diagnosis/repair/maintenance
Drive Belt diagnosis / maintenance
Shaft Drive diagnosis / maintenance
Brakes – 9%
Hydraulic brake system operation / maintenance
Brake pad wear diagnosis
Brake rotor diagnosis/repair
ABS system
Brake system bleeding
Suspension and Chassis - 10%
Hydraulic fork diagnosis / repair
Wheel bearing diagnosis / repair
Tire replacement
Stem / neck bearing diagnosis / repair
Engine Repair / Performance - 20%
Understanding the 4-stroke/cycle engine
Camshaft operation
Valve lash diagnosis / adjustment
Low oil pressure diagnosis/repair
Worn valve guide diagnosis
Cylinder bore diagnosis / measurement
Cylinder deglazing
Proper cylinder finish
Head bolt torque sequence
Piston ring identification
Bearing / race installation
Piston slap
Oil pressure relief valve operation
11/22/2023 12
Mechanic Study Guide
Recreational Trailer
Automobile & Light Truck Repair
Electrical Diagnosis - 36%
Trailer tail lamps
Ground wire problems
Turn signal circuits
Determine voltage drop
Trailer stop lamps
Brake controllers
4-Wire connectors
Current supply for trailer brakes
Electrical symbols
Flasher diagnosis
Color codes
Causes of blown fuses
Current flow / resistance
Brake Diagnosis - 26%
Loss of brakes
Grabby brakes
Dragging brakes
Erratic braking, surging
Pull to one side during braking
Adjusting trailer brakes
Brake shoe recognition
Springs/Hitches - 16%
Leaf springs
Equalizing hitches
Adjustment of hitches
Types of trailer springs
Spring maintenance
General Knowledge - 12%
Surge brakes
Reducing sway
Wheel bearing adjustment
Hydraulic brake lines
Metric measurements
Tire wear diagnosis
Wheels/Hubs - 10%
Wheel bearing diagnosis
Wheel bolt torque pattern
The State of Michigan does not provide or
recommend any single textbook or
published materials for your review when
preparing for the mechanics tests.
However, it is recommended that
individuals who prefer home study
acquire textbooks similar to those found
in technical skill centers, and two- or four-
year colleges. Typically, these types of
textbooks are not found at your local
library but are available through
educational bookstores and various
online automotive publishers.
It is suggested that you prepare by
reviewing the Mechanic Study Guides.
These study guides provide a list of the
categories and subcategories that will be
on each test. Each category is given a
percentage indicating how many of the
test questions will be drawn from that
category. This allows you to plan your
study time and concentrate on those
areas that are given the most emphasis
on the test.
11/22/2023 13
Mechanic Study Guide
Breath Alcohol Ignition Interlock Device (BAIID)
Automobile & Light Truck Repair
Ohms Law & Electrical Symbol Recognition -
13%
Ohms Law
Splice symbol
Diode symbol
Relay symbol
Starting System Diagnosis – 13%
Starter current draw
Starter relay diagnosis
Circuit resistance Test
Battery test
Miscellaneous Circuit Diagnosis – 6%
Regulator diagnosis
Horn circuit diagnosis
General – 13%
Electrostatic discharge
Voltage drop test
Circuit protection
Test Meter Usage – 6%
Ohmmeter usage
Voltmeter usage
Installation/Legal questions
Legal Requirements – 25%
Installer requirements
Service area requirements
Customer requirements
Customer training
General – 24%
Violation reset
Tampering
Emergency bypass code
Removal of device
Set point
The State of Michigan does not provide or
recommend any single textbook or
published materials for your review when
preparing for the mechanics tests.
However, it is recommended that
individuals who prefer home study
acquire textbooks similar to those found
in technical skill centers, and two- or four-
year colleges. Typically, these types of
textbooks are not found at your local
library but are available through
educational bookstores and various
online automotive publishers.
It is suggested that you prepare by
reviewing the Mechanic Study Guides.
These study guides provide a list of the
categories and subcategories that will be
on each test. Each category is given a
percentage indicating how many of the
test questions will be drawn from that
category. This allows you to plan your
study time and concentrate on those
areas that are given the most emphasis
on the test.
11/22/2023 14
Mechanic Study Guide
Engine Repair - Gasoline
Heavy Duty Truck Repair
Engine Mechanical Diagnosis - 26%
Spark plug evaluation
Engine noise
Compression test
Oil consumption
Exhaust smoke color
Cylinder blocks
Cylinder heads
Piston rings
Overheating
Skills In Measuring - 12%
Torque angle
Measuring cylinder bore
Reading a micrometer
Reading a dial indicator
Reading Plastigage
How to check crankshaft end play
Fundamentals – 31%
Electrical terms and definitions
Series / Parallel circuits
Understanding how engines operate
Cooling system operation
Ignition systems
Camshaft timing
Fuel systems
Electronic Controls – 32%
EGR operation
Variable valve timing
Sensor operation / diagnosis
Scan tool operation
EVAP system
The State of Michigan does not provide or
recommend any single textbook or
published materials for your review when
preparing for the mechanics tests.
However, it is recommended that
individuals who prefer home study
acquire textbooks similar to those found
in technical skill centers, and two- or four-
year colleges. Typically, these types of
textbooks are not found at your local
library but are available through
educational bookstores and various
online automotive publishers.
It is suggested that you prepare by
reviewing the Mechanic Study Guides.
These study guides provide a list of the
categories and subcategories that will be
on each test. Each category is given a
percentage indicating how many of the
test questions will be drawn from that
category. This allows you to plan your
study time and concentrate on those
areas that are given the most emphasis
on the test.
11/22/2023 15
Mechanic Study Guide
Engine Repair – Diesel
Heavy Duty Truck Repair
Engine Components - 22%
Piston rings
General piston knowledge
Aftercooler operation
Oil temperature
Oil distribution
Turbo charger operation
Valve bridge function
Engine Mechanical Diagnosis - 20%
Turbocharger diagnosis
Coolant in crankcase
Exhaust smoke diagnosis
Engine operating temperature
Oil pressure diagnosis
Engine tear down diagnosis
Blow by
Connecting rod diagnosis
Engine misfire
Fuel Systems - 12%
Types of injection
Leaky fuel lines
Fuel system diagnosis
Fuel Filter diagnosis
Skills In Measuring - 10%
Measuring tools
Reading Plastigage
Reading a micrometer
Crankshaft end play
Fundamentals - 14%
Using a digital multi meter
Bolt grades
Understanding 4-stroke engines
Valve lash adjustment
Electronic Controls and After-Treatment – 22%
EGR operation
DEF function / maintenance
DPF function / maintenance
DOC
The State of Michigan does not provide or
recommend any single textbook or
published materials for your review when
preparing for the mechanics tests.
However, it is recommended that
individuals who prefer home study
acquire textbooks similar to those found
in technical skill centers, and two- or four-
year colleges. Typically, these types of
textbooks are not found at your local
library but are available through
educational bookstores and various
online automotive publishers.
It is suggested that you prepare by
reviewing the Mechanic Study Guides.
These study guides provide a list of the
categories and subcategories that will be
on each test. Each category is given a
percentage indicating how many of the
test questions will be drawn from that
category. This allows you to plan your
study time and concentrate on those
areas that are given the most emphasis
on the test.
11/22/2023 16
Mechanic Study Guide
Drive Train
Heavy Duty Truck Repair
Clutch Components & Diagnosis - 19%
Causes of hard shifting
Clutch pedal free play
Slipping clutch
Clutch “chatter”
Clutch brake
Pilot bearing
Clutch adjustment
Driveshaft Components & Diagnosis - 17%
Driveline angles
Driveshaft disassembly
Driveline vibration
U-Joint replacement
U-joint maintenance
Axle Components & Diagnosis - 18%
Ring and pinion backlash
Inter-axle differential lock
Pinion bearing pre load
Differential side bearing pre load
Transmission Components & Diagnosis - 46%
Torque converter operation
Planetary gears
Causes of hard shifting
Automated mechanical transmission
Scan tool operation
Overdrive / underdrive
Transmission fluid condition
Clutch disc springs
Transmission / clutch noise
The State of Michigan does not provide or
recommend any single textbook or
published materials for your review when
preparing for the mechanics tests.
However, it is recommended that
individuals who prefer home study
acquire textbooks similar to those found
in technical skill centers, and two- or four-
year colleges. Typically, these types of
textbooks are not found at your local
library but are available through
educational bookstores and various
online automotive publishers.
It is suggested that you prepare by
reviewing the Mechanic Study Guides.
These study guides provide a list of the
categories and subcategories that will be
on each test. Each category is given a
percentage indicating how many of the
test questions will be drawn from that
category. This allows you to plan your
study time and concentrate on those
areas that are given the most emphasis
on the test.
11/22/2023 17
Mechanic Study Guide
Brakes & Braking Systems
Heavy Duty Truck Repair
Basic Knowledge - 25%
Anti-lock brakes (ABS)
Stability control system
Types of Brake line flares
Hydro-boost systems
Hydraulic brake line material
Air brake hand valve
Drum brake leak diagnosis
Master cylinder operation
Preset wheel bearing
Grease-soaked brake linings
Air Brake Diagnosis & Repair - 58%
Air brake systems operation
Finding air leaks
Air pressure diagnosis
Air compressor operation
Tractor protection valves
Dual diaphragm brake chamber operation
Pushrod travel
Spring brake repairs
Air pressures for fail-safe brakes
Adjusting cam actuated brakes
Brake linkage lubrication
Air line material
Slack adjuster and pushrod angle
“S” cam brake operation
Air dryer operation
Trailer brakes won’t release
Hydraulic Brake Diagnosis & Repair - 17%
Hydro-boost systems
Swollen master cylinder diaphragm
Cause of gear lube inside brake drums
Grabbing brakes
Causes of a pulsating pedal
Brake lining wear diagnosis
The State of Michigan does not provide or
recommend any single textbook or
published materials for your review when
preparing for the mechanics tests.
However, it is recommended that
individuals who prefer home study
acquire textbooks similar to those found
in technical skill centers, and two- or four-
year colleges. Typically, these types of
textbooks are not found at your local
library but are available through
educational bookstores and various
online automotive publishers.
It is suggested that you prepare by
reviewing the Mechanic Study Guides.
These study guides provide a list of the
categories and subcategories that will be
on each test. Each category is given a
percentage indicating how many of the
test questions will be drawn from that
category. This allows you to plan your
study time and concentrate on those
areas that are given the most emphasis
on the test.
11/22/2023 18
Mechanic Study Guide
Suspension & Steering Systems
Heavy Duty Truck Repair
Steering System Diagnosis - 19%
Power steering analyzer tool
Power steering unit noise
Power steering leak
System bleeding
Aerated power steering fluid
Free play in steering
Wheel shimmy
Tie rod end play
Suspension Diagnosis - 19%
Air ride suspension operation
Leaf springs
Hendrickson suspensions
Torque rods
Tandem axle alignment
Tracking rods
Wheel Alignment - 19%
Toe-in adjustment
Tire inflation
Tire wear analysis
Camber / Caster / Toe
Effects of different angles on vehicle operation
Basic Steering System Knowledge - 19%
Front suspension components
Steering gear operation / diagnosis
Wheel bearings
Steering wheel free play
Steering knuckle wear
Power steering pump replacement
Basic Suspension Knowledge - 19%
Castle nut tightening
Lug nut tightening sequence
Walking beam suspension
Suspension adjustment
Equalizing beam suspensions
Adjustable trailer axles
Fifth Wheel Knowledge – 6%
Fifth wheel adjustment
Fifth wheel diagnosis
Hardware grade
The State of Michigan does not provide or
recommend any single textbook or
published materials for your review when
preparing for the mechanics tests.
However, it is recommended that
individuals who prefer home study
acquire textbooks similar to those found
in technical skill centers, and two- or four-
year colleges. Typically, these types of
textbooks are not found at your local
library but are available through
educational bookstores and various
online automotive publishers.
It is suggested that you prepare by
reviewing the Mechanic Study Guides.
These study guides provide a list of the
categories and subcategories that will be
on each test. Each category is given a
percentage indicating how many of the
test questions will be drawn from that
category. This allows you to plan your
study time and concentrate on those
areas that are given the most emphasis
on the test.
11/22/2023 19
Mechanic Study Guide
Electrical Systems
Heavy Duty Truck Repair
System Diagnosis - 28%
Parallel vs. series
Trailer light diagnosis
Relay testing / diagnosis
Ground faults
Windshield wiper circuit
Circuit diagnosis
General - 11%
Batteries
Data bus
Welding
Module replacement
Vehicle Lighting – 11%
Turn signal circuit
Tail lamp circuit
Head lamp circuit
Trailer wiring
Clearance lights
Starting & Charging System Diagnosis - 36%
Battery charging
Battery load test
Alternator output
Charging system voltage
Circuit resistance
Voltage drop test
Starter diagnosis
Starter draw test
Starter terminal identification
Test Methods & Equipment - 14%
Voltmeter use
Ohmmeter use
Circuit testing
Diode operation
High voltage fuel system
Voltage drop test
The State of Michigan does not provide or
recommend any single textbook or
published materials for your review when
preparing for the mechanics tests.
However, it is recommended that
individuals who prefer home study
acquire textbooks similar to those found
in technical skill centers, and two- or four-
year colleges. Typically, these types of
textbooks are not found at your local
library but are available through
educational bookstores and various
online automotive publishers.
It is suggested that you prepare by
reviewing the Mechanic Study Guides.
These study guides provide a list of the
categories and subcategories that will be
on each test. Each category is given a
percentage indicating how many of the
test questions will be drawn from that
category. This allows you to plan your
study time and concentrate on those
areas that are given the most emphasis
on the test.
