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.

34. The body ground cable is bubbled and blistering. Which of the following is correct?

  • A. The vehicle may have a loose engine negative ground cable.
  • B. There may be resistance in the starter ground circuit.
  • C. A voltage drop test checks for resistance in a circuit.
  • D. All of the above.

34.

Answer A is wrong. They are all correct.

Answer B is wrong. Answer D is correct.

Answer C is wrong. Answer D is correct.

Answer D is correct. A loose connection in the battery ground circuit will cause current to seek another route like the chassis and engine ground straps. High current in the starter circuit can overload these thinner cables causing the insulation to blister and ground straps to burn and seperate.

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.