ASE A6 Electrical Electronics Practice Test

31. A vehicle's battery is being tested for capacity. Technician A says during a battery capacity test the voltage should not drop below 9.6 volts at 70° F. Technician B says a battery's voltage reading should increase as temperature decreases. Who is correct?

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

31.

Answer A is correct. If the capacity voltage drops below 9.6v at 70° F the battery may need to be replaced. The test duration is 15 seconds because any longer can damage the tool.

Answer B is wrong. The voltage reading gets lower as the outside or ambient temperature drops.

Answer C is wrong. Technician A is correct.

Answer D is wrong. Technician A is correct.

32. Technician A says changing the field current changes the alternator's voltage output. Technician B says the control module adjusts voltage regulation according to battery temperature and voltage. Who is correct?

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

32.

Answer A is wrong. Both technicians are correct. Full-fielding an alternator would produce maximum output.

Answer B is wrong. In late model vehicles the PCM controls voltage regulation. The desired voltage output is achieved by changing the amount of current to the field circuit.

Answer C is correct. Both technicians are correct.

Answer D is wrong. Both technicians are correct.

33. A technician is looking for the wire to an airbag sensor. The color of this airbag sensor's wire is MOST likely:

  • A. White
  • B. Black
  • C. Yellow
  • D. Blue

33.

Answer A is wrong. It will most likely be a bright color like yellow.

Answer B is wrong. It will most likely be yellow.

Answer C is correct. Yellow is the correct answer.

Answer D is wrong. It will most likely be yellow.

Voltage drop test

34. The passenger's window in the illustration above is inoperative. It is stuck in the up position. The driver's side window is good. Which of the following is LEAST likely causing this condition?

  • A. A faulty relay.
  • B. An open circuit breaker.
  • C. A faulty motor.
  • D. A poor ground.
Power window circuit.

34.

Answer A is correct. There are no relays in this circuit. It does contain a circuit breaker, two motors and a ground.

Answer B is wrong. An open in the circuit breaker would affect both motors, but there is no relay in the diagram.

Answer C is wrong. It could have a bad window motor. This is the most likely cause.

Answer D is wrong. The circuit has a common ground that would affect both windows.

35. A vehicle's engine will not crank. Technician A says to check the starter circuit first. Technician B says to check the condition of the battery first. Who is correct?

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

35.

Answer A is wrong. Always check the battery first.

Answer B is correct. Always check the battery first.

Answer C is wrong. Technician B is correct.

Answer D is wrong. Technician B is correct.