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DSL 409 - Diesel Electronics

1. Explain the categories of components in an electronically controlled system
   1. List the three major categories of components
   2. Identify all components and circuits relevant to a particular computerized system
   3. Distinguish an item’s function as an input, control or output
2. Examine the common types of input circuits and components
   1. List the types of basic input circuits
   2. Define common terms such as: reference voltage, supply signal, return, etc
   3. Explain the basic function of a thermistor and potentiometer
   4. Discuss the operation of two wire and three wire sensor circuits
   5. Explain the function of switch to ground and switch to power circuits
   6. Summarize the operation of speed/position sensors
   7. Relate each type of circuit with its susceptibility to problems like electrical noise and corrosion
   8. Distinguish an analog signal from a digital signal
3. Analyze the operation of control components, the related service equipment and software
   1. Connect an electronic and/or PC based diagnostic service tools to various electronically controlled systems
   2. Navigate through the menus of a variety of service tools and diagnostic software
   3. List several common screens or menus explaining the purpose of each.
   4. Differentiate factory parameters from customer parameters
   5. Outline common parameters explaining the purpose of each
   6. Describe the difference between a prom and an eeprom
   7. Retrieve diagnostic codes from an ECM
   8. Make necessary programming changes to an ECM using the electronic or PC based service tool
4. Examine the electronic operation of several types of output devices
   1. Relate electronic terms such as pulsewidth and response time to the operation of electronic unit injector systems
   2. Correlate electronic outputs to the operation of servos and solenoids as used with electronic injection pump systems and timing advances
   3. Compare electronic outputs to the function of regulators and solenoids as used with hydraulically actuated electronically controlled injector systems
5. Develop skills to systematically troubleshoot and correct a problem
   1. Organize all facts regarding the problem or complaint
   2. Identify all relevant components and their locations
   3. Interpret the manufacturer’s schematics to determine the operation of various electronic systems
   4. Identify and locate specific wires and connectors
   5. Relate the schematics to the actual hardware
   6. Interpret the manufacturer’s troubleshooting manual to determine an effective strategy
   7. Measure voltages and resistance’s in a system using the manufacturer’s adapters or tees as required
   8. Analyze measurements and test results to form a diagnosis
6. Explore the different manufacturer’s electronic systems
   1. Relate basic concepts to the manufacturer specific systems such as Caterpillar, Cummins, Detroit, Mack, International, John Deere and others
   2. Examine the unique components used by manufactures such as Caterpillar, Cummins, Detroit, Mack, International, John Deere and others
   3. Analyze the software features of the ECM’s and service tools of manufacturer?s such as Caterpillar, Cummins, Detroit, Mack, International, John Deere and others
   4. Practice manufacture specific adjustment of and/or replacement procedures for the manufacturer specific components relating to the electronic system
   5. Review various connector types and repair procedures
7. Investigate other electronic concepts
   1. Examine the function and application of transistors
   2. Outline the operation of several spark-ignited systems
   3. Explore computer-related principles

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