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Perform safety, organization and cleanliness
Assessment Strategies
in lab performance
Criteria
you demonstrate safety
you protect tools, equipment and manuals
you protect models and customer's property
you demonstrate conservative use of shop supplies
you demonstrate proper disposal of hazardous materials
you maintain clean and organized work areas
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Perform general engine diagnosis
Assessment Strategies
in lab performance
Criteria
you identify and interpret engine performance concern to determine necessary action
you research applicable vehicle and service information, such as engine management system operation, vehicle service history, service precautions, and technical service bulletins
you locate and interpret vehicle and major component identification numbers (VIN, vehicle certification labels, and calibration decals)
you perform engine absolute (vacuum/boost) manifold pressure tests to determine necessary action
you perform cylinder power balance test to determine necessary action
you perform cylinder compression tests to determine necessary action
you perform cylinder leakage test to determine necessary action
you diagnose engine mechanical, electrical, electronic, fuel, and ignition concerns with an oscilloscope and/or engine diagnostic equipment to determine necessary action
you prepare 4 or 5 gas analyzer; inspect and prepare vehicle for test, and obtain exhaust readings; interpret readings, to determine necessary action
you verify correct camshaft timing
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Perform computerized engine controls diagnosis and repair
Assessment Strategies
in lab performance
Criteria
you retrieve and record stored OBD I diagnostic trouble codes; clear codes.
you retrieve and record stored OBD II diagnostic trouble codes; clear codes.
you diagnose the causes of emissions or driveability concerns resulting from malfunctions in the computerized engine control system with stored diagnostic trouble codes
you diagnose emissions or driveability concerns resulting from malfunctions in the computerized engine control system with no stored diagnostic trouble codes to determine necessary action
you check for module communication errors using a scan tool
you inspect and test computerized engine control system sensors, power train control module (PCM), actuators, and circuits using a graphing multimeter (GMM)/digital storage oscilloscope (DSO); perform necessary action
you obtain and interpret scan tool data
you access and use service information to perform step-by-step diagnosis
you diagnose driveability and emissions problems resulting from malfunctions of interrelated systems to determine necessary action
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Perform ignition system diagnosis and repair
Assessment Strategies
in lab performance
Criteria
you diagnose ignition system related problems such as no-starting, hard starting, engine misfire, poor driveability, spark knock, power loss, poor mileage, and emissions concerns on vehicles with electronic ignition (distributorless) systems to determine necessary action
you diagnose ignition system related problems such as no-starting, hard starting, engine misfire, poor driveability, spark knock, power loss, poor mileage, and emissions concerns on vehicles with electronic ignition (distributorless) systems to determine necessary action
you inspect and test ignition primary circuit wiring and solid state components; perform necessary action
you inspect, test and service distributor
you inspect and test ignition system secondary circuit wiring and components; perform necessary action
you inspect and test ignition coil(s); perform necessary action
you check and adjust ignition system timing and timing advance/retard (where applicable)
you inspect and test ignition system pick-up sensor or triggering devices; perform necessary action
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Perform fuel, air induction, and exhaust systems diagnosis and repair
Assessment Strategies
in lab performance
Criteria
you diagnose hot or cold no-starting, hard-starting, poor driveability, incorrect idle speed, poor idle, flooding, hesitation, surging, engine misfire, power loss, stalling, poor mileage, dieseling, and emissions problems on vehicles with carburetor-type fueled systems to determine necessary action
you diagnose hot or cold no-starting, hard starting, poor driveability, incorrect idle speed, poor idle, flooding, hesitation, surging, engine misfire, power loss, stalling, poor mileage, dieseling, and emissions problems on vehicles with injection-type fuel systems to determine necessary action
you check fuel for contaminants and quality to determine necessary action
you inspect and test mechanical and electrical fueled pumps and pump control systems for pressure, regulation and volume; perform necessary action
you replace fuel filters
you inspect and test cold enrichment system and components; perform necessary action
you inspect throttle body, air induction system, intake manifold and gaskets for vacuum leans and/or unmetered air
you inspect and test fuel injectors
you check idle speed and fuel mixture
you adjust idle speed and fuel mixture
you perform exhaust system back-pressure test to determine necessary action.
you test the operation of turbocharger/supercharger systems to determine necessary action
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Perform emissions control systems diagnosis and repair
Assessment Strategies
in lab performance
Criteria
you diagnose oil leaks, emissions, and driveability problems resulting from malfunctions in the positive crankcase ventilation (PCV) system to determine necessary action
you inspect, test and service positive crankcase ventilation (PCV) filter/breather cap, valve, tubes, orifices, and hoses; perform necessary action
you diagnose emissions and driveability problems caused by malfunctions in the exhaust gas recirculation (EGR) system to determine necessary action
you inspect and test electrical/electronic sensors, controls, and wiring of exhaust gas recirculation (EGR) systems; perform necessary action
you diagnose emissions and driveability problems resulting from malfunctions in the secondary air injection and catalytic converter systems to determine necessary action
you inspect and test mechanical components of secondary air injection systems; perform necessary action
you inspect and test electrical/electronically-operated components and circuits of air injection systems; perform necessary action
you inspect and test catalytic converter performance
you diagnose emissions and driveability problems resulting from malfunctions in the intake air temperature control system to determine necessary action
you inspect and test components of intake air temperature control system; perform necessary action
you diagnose emissions and driveability problems resulting from malfunctions in the early fuel evaporation control system to determine necessary action
you inspect and test components of early fueled evaporation control system; perform necessary action
you diagnose emissions and driveability problems resulting from malfunctions in the evaporative emissions control system; determine necessary action
you inspect and test components and hoses of evaporative emissions control system; perform necessary action
you interpret evaporative emission related diagnostic trouble codes (DTCs); determine necessary action