Automotive Maintenance and Light Repair (grade 12)

by Fernando Castro

This is a capstone level, high school automotive course that provides students with theory, knowledge, and skills necessary to understand basic engine theory, cooling systems, electrical, ignition systems, fuel systems, emissions, heating and air conditioning. The lab component of the class focuses on general inspection procedures, maintenance and light repair work that is common in automotive, agricultural and industrial applications. Demonstrated lecture, simulated problem diagnosis and practical application on "live" vehicles will be used. Prepares students for Automotive Maintenance and Light Repair (G1) ASE exam.

Program Information
Course Certification Elements
Course Standards
California's 2013 CTE Standards (46)
Course Competencies / Outcomes

STUDENT LEARNING OUTCOMES 

Upon completion of the course, students will be able to:

1. inspect and evaluate the condition of engine and cooling system components.

2. assemble basic electrical circuits, perform electrical measurements and evaluate them using the principles of Ohm's Law.

3. have gained sufficient knowledge to continue into advanced automotive courses.

  • Examine vehicles to determine extent of damage or malfunctions.
  • Repair, reline, replace, and adjust brakes.
  • Follow checklists to ensure all important parts are examined, including belts, hoses, steering systems, spark plugs, brake and fuel systems, wheel bearings, and other potentially troublesome areas.
  • Confer with customers to obtain descriptions of vehicle problems and to discuss work to be performed and future repair requirements.
  • Perform routine and scheduled maintenance services, such as oil changes, lubrication, and tune-ups.
  • Repair and service air conditioning, heating, engine cooling, and electrical systems.
  • Test and adjust repaired systems to meet manufacturers' performance specifications.
  • Review work orders and discuss work with supervisors.
  • Plan work procedures, using charts, technical manuals, and experience.
  • Disassemble units and inspect parts for wear, using micrometers, calipers, and gauges.
  • Repair or replace parts such as pistons, rods, gears, valves, and bearings.
  • Rewire ignition systems, lights, and instrument panels.
  • Install and repair accessories, such as radios, heaters, mirrors, and windshield wipers.
  • Maintain cleanliness of work area.
  • Repair or replace shocks absorbers.
  • Replace and adjust headlights.
  • Diagnose and replace carburetors, generators, distributors, starters, and pumps.
  • Repair radiator leaks.


Course Work Based Learning Activities
  • Hands-on lab activities on shop vehicles
  • Hands-on work on customer vehicles
  • Interviewing repair facilities, job shadowing and interning in industry
Course Materials

Book options:

Stockle and Johanson. Auto Fundamentals, 11th Edition. ISBN: 978-1-61960-820-7 Copyright 2015

or 

Halderman, J. D. . (2016) Automotive Technology: Principles, Diagnosis and Service 5th Edition, Prentice Hall 

Tools:

Basic hand tools, oil filter wrenches, grease gun, torque wrenches, micrometers, feeler gauge,digital or dial caliper, impact guns, DMM, compression gauge, leak down tester, vacuum gauge, cooling system pressure tester, brake tools, 

Equipment: 

Two post lifts, tire machine, tire balancer, brake lathe, oil drain, floor jacks, jack stands, tool carts, computers and software subscriptions to AllData or Mitchell on demand, Engine stands, Shop Vehicles, A Tech Training Boards.


Course Units (180 hour course)

Engine Fundamentals

Unit Length (Hours):  29 hours

Unit Description: 

This unit includes a comprehensive overview of the internal combustion-style engine systems common in the automotive industry such as two stroke, four stroke and diesel engines. Covering chapters 1,2 and 3 in Automotive Fundamentals and Labs on Briggs and Stratton and various donated engine components. However this unit will focus primarily on the functions and parts of a four stroke cycle of Intake, Compression, Combustion, Exhaust. We will include starting and charging systems, stroke and bore, and power outputs in relation to engine size and performance. Student demonstration of skills/concepts will include:

  • Purpose, function and parts identification
  • Four stroke cycle
  • Various engine and valve train designs

Unit Competencies/ Outcomes

Basic Engine mechanical testing, measurements and defining misfire

Unit Assessment

Formative assessment tests and lab task evaluations

Cooling Systems

Unit Length (Hours): 20 hours

Unit Description: 

In this unit students will list the functions of an engine cooling system, Identify types and major components, describe and analyze the flow of coolant through the system, identify basic parts of an air based system and perform diagnostic repairs in the lab. Chapter 12 in the Automotive Fundamentals Book will be utilized as the primary resource.

  • Purpose, function and parts identification
  • Cooling system theory
  • General repair techniques


Unit Competencies/ Outcomes

Cooling system maintenance inspection and leak detection

Basic overheating diagnosis

Removal and Installation of Water Pumps, Thermostats and Radiators

Unit Assessment

Formative assessment tests and lab task evaluations

Electrical Principals and Ohm’s Law

Unit Length (Hours): 29 hours

Unit Description: 

In this unit students will be exploring and familiarizing themselves with basic electrical and electronic principals, explain the effects of magnetism, the science of induction, manipulate basic circuits, construct a variety of integrated circuits and learn the function of various electrical measurement tools. Basic Lab tasks and assessments will focus on circuits build around Breadboards or ATech GM Trainers- model18002-TR.

  • Basic OHMs law and meter usage
  • Voltage, Amperage, Resistance and Voltage Drop testing

Unit Competencies/ Outcomes

Series and parallel circuit building

Series and Parallel circuit testing and diagnostics with a DMM

Wiring diagram illustrating and design

Unit Assessment

Formative assessment tests and lab task evaluations

Charging and Starting Systems Fundamentals

Unit Length (Hours): 20 hours

Unit Description: 

This unit will focus on chapter 16 of the Automotive Fundamentals book, covering the construction and operation of both the automotive battery and the principals of the charging system. The students will learn how to identify the major parts of both systems and explain the operation principals of each system. Lab for this unit will consist of testing components on the vehicle and dissection of various parts on the bench. 

  • Purpose, function and parts identification
  • Basic alternator construction and operation
  • Basic starter construction and operation
  • Wiring repair, testing and soldering

Unit Competencies/ Outcomes

Basic charging system testing

Reading and using wiring diagrams for testing

Unit Assessment

Formative assessment tests and lab task evaluations

Ignition Systems Fundamentals

Unit Length (Hours): 20 hours

Unit Description: 

In this unit students will explain the method of voltage magnification, describe the primary circuits of an ignition system, describe the secondary circuits and summarize the basic function of the ignition system. Students will also research the different types of ignition systems and various types of ignition triggering devices, and explain the concept of ignition timing from chapter 9 of the Automotive Fundamentals book.

  • Purpose, function and parts identification
  • Ignition systems theory
  • Mechanical and sensor read triggering devices and computer strategies

Unit Competencies/ Outcomes

Basic maintenance and general repair techniques

Unit Assessment

Formative assessment tests and lab task evaluations

Fuel Injection Systems

Unit Length (Hours): 20 hours

Unit Description: Chapter 10 of the Automotive Fundamentals book covers the topic of Fuel Injection Systems. Students will learn the major parts of a gasoline fuel injection system, describe the major parts of diesel fuel injection systems. The students will also summaries the operation principals of gasoline and diesel injection systems and compare the different types of gasoline and diesel fuels.

  • Purpose, function and parts identifications
  • Fuel supply and delivery systems
  • Fuel system types

Unit Competencies/ Outcomes

Fuel system maintenance, Fuel systems inspections and diagnostics, DTC codes related to the fuel systems and test equipment.

Unit Assessment 

Formative assessment tests and lab task evaluations

Exhaust and Emission Control Systems Technology

Unit Length (Hours): 22 hour 

Unit Description: This unit enables students to understand the purpose of exhaust systems and defining emissions. Covered are exhaust system designs, components and sealing, listing the most harmful types of emissions and the 3 classes of emission controls. Identified are the major parts of common emissions control systems. Chapters 14 and 15 in the book are covered, including vocabulary. Lab tasks will consist of part identification tasks, back pressure inspections, functionality testing and basic emissions control diagnostics using scan tools.

  • Vehicle emissions: HC, CO, NOx
  • Purpose, function and parts identification
  • California Smog Program: smog inspections, consumer assistance program, repair cost waiver.

Unit Competencies/ Outcomes

Understand the California Smog program and consumer options 

Understand basic emissions components and tail pipe emissions

Unit Assessment

Formative assessment tests and lab task evaluations

Air Condition Fundamentals

Unit Length (Hours): 20 hours

Unit Description: After studying this unit, students will be able to identify the three methods of heat transfer, explain the principals of latent and sensible heat, identify refrigerant types and their characteristics, describe the basic refrigerant cycle, identify parts and operation of each component, discuss the basic heater system operation and compare the differences in ac control systems designs. Chapter 28 in the Automotive Fundamentals book is the primary resource.

  • Purpose, function and parts identification
  • Air Conditioning theory and science
  • Refrigerant types and handling: R12, R134a and 1234yf
  • Recovery, Charging and Gage tools


Unit Competencies/ Outcomes

Use AC equipment to evacuate and recharge an AC system

Unit Assessment

Formative assessment tests and lab task evaluations

Course Summative Assessment

The Classroom Summative Assessment should resemble an ASE style exam similar to the Maintenance and Light Repair G1. 

The Lab Final Exam should include hands-on tasks such as parts identification, tool identification and measurement with a DMM.