Explains the operating principles, diagnosis, and laboratory testing of computer controlled fuel management systems. Emphasizes diagnosis and testing with hand-held scanners and on-board digital fault systems. Topics include sensor, actuator, and computer functions in maintaining catalyst stoichiometry. Also covers state test procedures and five-gas analysis as related to computer control. Laboratory activities.
Goals, Topics, and Objectives
- Engine Air Fuel Requirements
- Engine Ignition Timing Requirements
- Electronic Fuel Metering Systems
- Gasoline Fuel Injection Systems
- Open and Closed Loop System Calibration
- Sensor and Actuator Electronic Operating Parameters
- System Fault Indicators
- Use of Hand Held Diagnostic Tools
- Diagnosis of Common Driveability Symptoms
- OBD II Monitors
- OBD II Regulations
- Recognize and identify modern automobile computer system components.
- Measure electronic parameters of fuel system sensors and actuators.
- Use generated fault codes to diagnose fuel system and ignition system malfunctions.*
- Use scan tool to perform analytical tests on five sensor/actuator circuits.
- Diagnose vehicle performance problems related to computerized fuel system.*
Assessment and Requirements
Measurable objectives will be evaluated by the instructor based on accuracy and proficiency and completion of assigned tasks. Attendance, homework, class participation, lab activities, quizzes and tests will be used as criteria to assign the student’s final earned grade for this class.
Students must take notes on demonstrations, carefully read and analyze assigned course materials and perform exercises to determine their competence in servicing modern computerized engine management, emission control and OBD II systems.