ASE A6 Electrical Electronics Practice Test

46. All the lights in a brake light circuit illuminate except one. The MOST likely cause is:

  • A. An open wire.
  • B. An open taillight switch.
  • C. A blown fuse.
  • D. A burned bulb.

46.

Answer A is wrong. It is most likely the individual bulb.

Answer B is wrong. This would have affected all the lights.

Answer C is wrong. This would have affected all the lights.

Answer D is correct. In a parallel circuit one bulb can burn out while the others are unaffected.

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47. The number 2 and 3 cylinders of a four cylinder engine are producing less secondary voltage than the 1 and 4 cylinders. According to the diagram above which of the following is causing this condition?

  • A. There is an open at point A of the ignition system.
  • B. There is an open at point C of the ignition system.
  • C. There is resistance at point C of the ignition system.
  • D. There is resistance at point D of the ignition system.

47.

Answer A is wrong. This ground is for both drivers.

Answer B is wrong. An open at point C results in no voltage output and a misfire code with both the 2 and 3 cylinders.

Answer C is correct. Resistance at point C in the 2-3 coil’s power circuit will result in low output at the 2-3 coil only. This is because reduced primary voltage caused by electrical resistance results in low secondary voltage output. Perform a primary circuit voltage drop test to confirm.

Answer D is wrong. Resistance in the crankshaft position sensor’s circuit will result in a corrupt signal and a probable no-spark condition at both coils.

48. If a technician reversed the leads of a digital voltmeter on a 12 volt circuit the readout would show:

  • A. 0.00 volts
  • B. -0.00 volts
  • C. 12.00 volts
  • D. -12.00 volts

48.

Answer A is wrong. Because the leads are crossed the output is -12.00 volts.

Answer B is wrong. The answer is -12.00 volts.

Answer C is wrong. The answer is -12.00 volts.

Answer D is correct. The answer is -12.00 volts. If the leads are reversed using a digital meter, the polarity is changed resulting in a negative voltage reading.

49. The hazard and turn signal lights are inoperative. Technician A says that they share the same circuit. Technician B says the vehicle may have a faulty flasher. Who is correct?

  • A. Technician A
  • B. Technician B
  • C. Both A and B
  • D. Neither A or B

49.

Answer A is wrong. Both technicians are correct.

Answer B is wrong. Both technicians are correct.

Answer C is correct. Both technicians are correct. This indicates the use of a combination flasher.

Answer D is wrong. Both technicians are correct.

50. All of the following are true about battery replacement EXCEPT.

  • A. Use a computer memory saver.
  • B. Remove the negative terminal first.
  • C. Replace the positive terminal last.
  • D. Use a battery terminal puller if the terminal is stuck to the post.

50.

Answer A is wrong. Using a memory saver is a great way to retain the memory in computer modules.

Answer B is wrong. Remove the negative terminal first.

Answer C is correct. Replace the negative terminal last.

Answer D is wrong. If the terminal is stuck to the post, don’t pry at it and possibly damage the case, use a battery terminal puller instead.