Ch 17 & 23

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Across
  1. 1. If someone leaves the gas cap off, this system will detect pressure leakage to inform the driver with a trouble code.
  2. 5. Unwanted voltage spikes in a circuit and is caused by induced voltage from an outside source.
  3. 6. An ____ signal will produce a curved or irregular wave.
  4. 7. A curving wave that smoothly fluctuates above and below zero volts.
  5. 8. Both optical and ____ sensors can be used to monitor speed or part rotation.
  6. 9. Shielded wire is often used with ____ sensors in order to block induced voltage interference.
  7. 11. The large ____ control module coordinates engine, transmission, traction control, and antilock brake functions, and instrumentation.
  8. 13. This sensor can detect a leaking or clogged fuel injector immediately.
  9. 17. Most automotive computer systems use a signal ____ of about 3-5V.
  10. 20. A group of two or more atoms.
  11. 22. Certain automotive computer sensors use ____ current.
  12. 24. ____ are the hands and arms of a computer system.
  13. 28. Signal frequency.
  14. 30. Electric current is the result of the chain reaction flow of ____ electrons.
  15. 32. Garden hose analogy 3 of 3: water valve restriction
  16. 33. While CAN may be used throughout the vehicle, ____ would be used in one section, such as inside a door.
  17. 34. You can make one of these by wrapping a wire around a nail and connecting it to a battery.
  18. 35. ____ are not part of the nucleus of an atom.
  19. 39. Both input and output ____ protect the computer from shorted or grounded circuits.
  20. 40. A substance composed of molecules containing two or more elements.
  21. 41. A sensor which can produce signals for the cardinal directions and is used in some navigation systems.
  22. 43. In a hydraulic circuit, the hydraulic pump is comparable to the ____.
  23. 44. A tool that produces a visual waveform.
  24. 46. A pattern of 4 bits.
  25. 49. An inverted AND gate.
  26. 51. A wave that moves steadily up from zero and then switches off almost instantly.
  27. 52. A pattern of 8 bits.
Down
  1. 2. Twisted-pair conductors can carry computer data faster than ____-wire conductors.
  2. 3. A digital signal produces a ____ wave.
  3. 4. A group of one type of atom.
  4. 6. The reflex action of your muscles is similar to the action of an ____ in a car’s computer system.
  5. 10. Garden hose analogy 2 of 3: water flow
  6. 12. Star, bus, and ____ are types of configurations that vehicle ECMs use to communicate with one another.
  7. 14. Transmission pressure switches are an example of this type of sensor.
  8. 15. Garden hose analogy 1 of 3: water pressure
  9. 16. The percentage of “on” time compared to total cycle time.
  10. 18. ____ devices usually use 1-2V.
  11. 19. The brain of a computer, and usually the largest integrated circuit in a computer.
  12. 21. A _____ voltage signal consists of two complementary digital signals with opposing polarities.
  13. 23. Even though it’s less accurate, ____ current theory is used in automotive work that describes current.
  14. 25. A vehicle sensor.
  15. 26. The ____ produces AC current and rectifies it into DC current.
  16. 27. Excess electron flow results in a ____ ____.
  17. 29. A curving wave that fluctuates at or above zero volts.
  18. 31. ____ sensors allow the computer to detect the resulting change in voltage caused by the change in resistance.
  19. 36. ____ occurs when passing a wire through a magnetic field.
  20. 37. The ECT sensor measures the temperature of engine ____.
  21. 38. Porcelain is a type of ____.
  22. 42. The computer can use a ____ to lock the vehicle’s doors once a certain road speed is achieved.
  23. 45. A common use for a ____ motor is to control engine idle speed by opening or closing a small air passage into the engine intake manifold.
  24. 47. A simple electric circuit consists of a power supply, ____, and conductor.
  25. 48. An electronic circuit that produces a specific output voltage for given input voltages.
  26. 50. Engine and powertrain control modules are located under the ____, in the engine compartment, or another central location.