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TEST SPECIFICATIONS AND TASK LISTS FOR THE NATIONAL AUTOMOTIVE STUDENT SKILLS STANDARDS ASSESSMENT - page 5 / 9

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  • 2.

    Perform fuel supply and return system tests; determine needed action.

  • 3.

    Inspect fuel tanks, vents, caps, mounts, valves, screens, crossover system, supply and return lines and

fittings; determine needed action.

  • 4.

    Inspect, clean, and test fuel transfer (lift) pump, pump drives, screens, fuel/water separators/indicators, filters, heaters, coolers, ECM cooling plates, and mounting hardware; determine needed action.

  • 5.

    Inspect and test low pressure regulator systems (check valves, pressure regulator valves, and restrictive fittings); determine needed action.

  • 6.

    Check fuel system for air; determine needed action; prime and bleed fuel system; check primer pump.

  • 2.

    Electronic Fuel Management System

  • 1.

    Inspect and test power and ground circuits and connections; measure and interpret voltage, voltage

drop, amperage, and resistance readings using a digital multimeter (DMM); determine needed action.

  • 2.

    Interface with vehicle’s on-board computer; perform diagnostic procedures using recommended electronic diagnostic equipment and tools (to include PC based software and/or data scan tools); determine needed action.

  • 3.

    Check and record electronic diagnostic codes and trip/operational data; monitor electronic data; clear codes; determine further diagnosis.

4.

Locate and use relevant service information (to include diagnostic procedures, flow charts, and wiring diagrams).

  • 5.

    Inspect and replace electrical connector terminals, seals, and locks.

  • 6.

    Inspect and test switches, sensors, controls, actuator components, and circuits; adjust or replace as

needed.

7.

Using recommended electronic diagnostic tools (to include PC based software and/or data scan tools), access and interpret customer programmable parameters.

  • 8.

    Inspect, test, and adjust electronic unit injectors (EUI); determine needed action.

  • 9.

    Remove and install electronic unit injectors (EUI) and related components; recalibrate ECM (if

applicable).

  • 10.

    Perform cylinder contribution test utilizing recommended electronic diagnostic tool.

  • 11.

    Perform on-engine inspections and tests on hydraulic electronic unit injectors and system electronic

controls; determine needed action.

  • 12.

    Perform on-engine inspections and tests on hydraulic electronic unit injector high pressure oil supply and control systems; determine needed action.

  • 13.

    Perform on-engine inspections and tests on common rail type injection systems; determine needed action.

14. Inspect high pressure injection lines, hold downs, fittings and seals; determine needed action.

Effective: January 2010

5

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