ATG 337 - GM Engine Performance Credits: 4
Lecture Hours: 3
Lab Hours: 2
Practicum Hours: 0
Work Experience: 0
Course Type: Voc/Tech
Diagnosis and service of microprocessor-controlled fuel and ignition systems. Oscilloscopes, engine analyzers, digital meters and other high-technology instruments will be used.
Prerequisite: ATG 336 , ATG 327 and ATG 328
- Perform proper shop safety procedures
- Apply work area safety skills.
- Demonstrate safe personal working habits.
- Practice safe tool and equipment usage.
- Follow manufacturers repair procedures.
- Follow manufacturer and government warnings and regulations.
- Explore General Engine Performance Diagnosis
- Identify and interpret engine performance concerns; determine necessary action.
- Research applicable vehicle and service information, vehicle service history, service precautions, and technical service bulletins.
- Describe Electronic Engine Control Terminology and Standards.
- Explain The Function and Operation of Onboard Engine Computers.
- Discuss Electronic Engine Control Components (Sensors) and Their Operation.
- Examine Computerized Engine Control Diagnosis and Repair
- Retrieve and record diagnostic trouble codes, OBD monitor status, and freeze frame data; clear codes when applicable.
- Access and use service information to perform step-by-step (troubleshooting) diagnosis.
- Perform active tests of actuators using a scan tool; determine necessary action.
- Describe the importance of running all OBDII monitors for repair verification.
- Diagnose the causes of emissions or drivability concerns with stored or active diagnostic trouble codes; obtain, graph, and interpret scan tool data.
- Diagnose emissions or drivability concerns without stored diagnostic trouble codes; determine necessary action.
- Inspect and test computerized engine control system sensors, powertrain/engine control module (PCM/ECM), actuators, and circuits using a graphing multi-meter (GMM)/digital storage oscilloscope (DSO); perform necessary action.
- Diagnose drivability and emissions problems resulting from malfunctions of interrelated systems (cruise control, security alarms, suspension controls, traction controls, A/C, automatic transmissions, non-OEM installed accessories, or similar systems); determine necessary action.
- Evaluate Ignition Systems.
- Diagnose (troubleshoot) ignition system related problems such as no-starting, hard starting, engine misfire, poor drivability, spark knock, power loss, poor mileage, and emissions concerns; determine necessary action.
- Inspect and test crankshaft and camshaft position sensor(s); perform necessary action.
- Inspect, test, and/or replace ignition control module, powertrain/engine control module; reprogram as necessary.
- Remove and replace spark plugs; inspect secondary ignition components for wear and damage.
- Diagnosis and Repair Emissions Control Systems
- Diagnose emissions and drivability concerns caused by the exhaust gas recirculation (EGR) system; determine necessary action.
- Diagnose emissions and drivability concerns caused by the evaporative emissions control system; determine necessary action.
- Inspect and test electrical/electronic sensors, controls, and wiring of exhaust gas recirculation (EGR) systems; perform necessary action.
- Inspect, test, service, and replace components of the EGR system including tubing, exhaust passages, vacuum/pressure controls, filters, and hoses; perform necessary action.
- Inspect and test electrical/electronically-operated components and circuits of air injection systems; perform necessary action.
- Inspect and test catalytic converter efficiency.
- Inspect and test components and hoses of the evaporative emissions control system; perform necessary action.
- Interpret diagnostic trouble codes (DTCs) and scan tool data related to the emissions control systems; determine necessary action.
- Diagnosis and Repair Fuel, Air Induction, and Exhaust Systems.
- Diagnose (troubleshoot) hot or cold no-starting, hard starting, poor drivability, incorrect idle speed, poor idle, flooding, hesitation, surging, engine misfire, power loss, stalling, poor mileage, dieseling, and emissions problems; determine necessary action.
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