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