GTC 241 - Advanced Driveability

4 Contact Hours, 3 Credits
2 lecture periods 2 lab periods

Diagnosis and repair of On-board Diagnostics Generation One (OBDI) and Two (OBDII) systems. Includes personal and environmental safety, general engine, computerized engine controls, ignition system, fuel, air induction, and exhaust systems, emissions control systems, and engine related service.

Course Learning Outcomes

Demonstrate a working knowledge of the diagnostic procedures of multiport fuel injection, Hall Effect ignition system
Perform diagnosis of central fuel injection, and electronic engine control on a passenger vehicle.
Perform diagnosis of sequential fuel injection, and distributerless ignition system on a passenger vehicle.
Perform diagnosis of sequential fuel injection, and direct ignition system on a passenger vehicle.
Perform diagnosis of throttle body fuel injection, and electronic ignition system on a passenger vehicle.
Demonstrate 4-step ignition diagnosis and tune-up principals.
Demonstrate an understanding of variable intake and valve timing and perform double timing chain removal/replacement.
Perform diagnosis of OBD II computerized control system on a passenger vehicle.

Outline:

Introduction to Engine Performance and Driveability
1. Identify the reasons for increasing the efficiency of automobiles and trucks.
2. Identify the main methods of increasing the efficiency of modern vehicles.
3. Identify the major uses of computer controls on modern vehicles.
4. identify what these changes mean for the modern automotive technician.
Safety and Environmental Protection
1. Identify types of accidents that occur when working on vehicles.
2. Identify the two main classifications of accident prevention.
3. Explain how proper shopkeeping can prevent accidents.
4. Explain how proper work procedures can prevent accidents.
5. Identify unsafe work procedures.
6. Identify environmental concerns that affect automotive shops.
7. Identify ways in which automotive shops cause pollution.
8. Identify proper waste disposal techniques.
Tools, Test Equipment, and Service Information
1. Identify and explain the uses of basic electrical test instruments.
2. Identify and explain the uses of basic mechanical test equipment.
3. Identify and explain the uses of input sensor testers and simulators.
4. Identify and explain the uses of output device testers and starting and charging system testers.
5. Identify and explain the uses of oscilloscopes.
6. Identify and explain the uses of exhaust gas analyzers and service manuals.
7. Explain how to use schematics and troubleshooting charts.
8. Identify and explain the purposes of manufacturer hotlines.
9. Explain the influence of computers in the automotive shop.
Definitions, Formulas, and Measurements of Engine Efficiency
1. Explain the difference between objective measurements and subjective judgment.
2. Identify and explain rating systems for engine efficiency.
3. Identify the English system of measurement.
4. Identify the Metric system of measurement.
5. Identify and explain the use of common automotive formulas.
6. Identify common linear measuring devices, pressure measuring devices, and measuring devices for electrical properties.
7. Identify common temperature measuring devices.
8. Identify common engine measurement terms.
9. Identify the various methods by which drivers measure efficiency.
10. Identify the various methods technicians use to measure efficiency.
11. Identify the various methods government agencies use to measure efficiency.
Engine Operating Fundamentals
1. State the major action that takes place during each stroke of a four-stroke engine.
2. Identify and explain the purposes of the major components of the engine compression system.
3. Identify and explain the operation of a rotary engine.
4. Identify and explain the operation of a Miller-cycle engine.
5. Identify and explain the operation of a diesel engine.
6. Identify the operating principles of liquid cooling systems.
7. Identify the operating principles of air cooling systems.
8. Identify and explain the purpose of the cooling system parts.
9. Identify the purposes of the engine lubricating system and parts.
10. Identify common oil classification systems.
Computer Control Fundamentals
1. Explain how efficiency is obtained by electronic engine controls.
2. Explain the operation of the electronic control module.
3. Identify the major internal components of the electronic control module.
4. Identify and explain the operation of major input sensors and output devices.
5. Explain the basic control loop of the computer control system.
6. Explain the major differences between OBD I and OBD II systems.
Drive Train and Vehicle System Fundamentals
1. Explain how transmission problems can affect driveability.
2. Explain how other system problems can be confused for driveability problems.
3. VIII. Basic Diagnostic Procedures
4. Define the concepts of strategy-based diagnostics.
5. Identify and describe the seven steps of proper troubleshooting.
6. Explain the importance of follow-up.
7. Apply the seven step diagnostic procedure to specific drivability problems.
Troubleshooting Techniques
1. Identify and explain basic principles of driveability diagnosis.
2. Evaluate driver input concerning vehicle problems.
3. Make visual checks for underhood problems.
4. Perform a road test.
5. Identify and explain the basic methods of diagnosing driveability problems caused by engine systems, the vehicle drive train, computer control systems, and other vehicle systems.
6. Identify methods for determining further action.
Computer Control System Diagnosis and Repair
1. Identify methods of ECM trouble code retrieval and retrieve and interpret trouble codes.
2. Use a scan tool to check systems.
3. Use a multimeter to check computer systems.
4. Explain how to replace computer control input sensors, ECMs, and memory chips.
5. Program ECMs with PROMs.
Ignition System Diagnosis and Repair
1. Use a scan tool to retrieve ignition system information.
2. Use a timing light to check engine timing and advance.
3. Use an oscilloscope and adjust ignition timing.
4. Check and adjust the ignition system.
5. Remove, rebuild, and replace an electronic distributor.
Engine Mechanical Diagnosis
1. Diagnose and isolate engine noises.
2. Use a vacuum gauge and compression gauge to detect engine problems.
3. Check the cooling system.
4. Replace turbochargers and superchargers.
5. Replace timing gears, chains, and belts.
6. Replace intake manifolds, plenums, and exhaust manifolds.
Drive Train and Vehicle System Diagnosis
1. Check non-engine systems to identify driveability problems.
2. Check: clutch and manual transmission, transaxle operation, air conditioner, driveshaft, universal and constant velocity, steering ans suspension, and pressure switches.