ASE A6 Electrical Electronics Practice Test

26. A technician is performing a starter current draw test on a four-cylinder engine. The engine cranks slowly and has a current draw of 340 amps. Which of the following is correct?

  • A. The current draw is within specifications.
  • B. The starter has worn bushings.
  • C. The starter has worn brushes.
  • D. There is excessive resistance in the circuit.

26.

Answer A is wrong. There is excessive current draw in the starter circuit.

Answer B is correct. A typical four-cylinder engine requires 150-170 amps. A current draw of 340 amps is too high. Worn bushings result in high current draw.

Answer C is wrong. Worn brushes result in excessive resistance.

Answer D is wrong. There is excessive current draw in the circuit.

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27. Technician A says the resistance of this sensor decreases as the temperature of the seat increases. Technician B says the two heating elements run in series with each other. Who is correct?

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

27.

Answer A is wrong. Both technicians are correct. It’s an NTC or negative temperature coefficient sensor; the resistance of this sensor decreases as the temperature of the seat increases. This changes the voltage signal sent to the controller.

Answer B is wrong. These two heating elements run in series with each other. An open in this wire will disable both elements.

Answer C is correct. Both technicians are correct.

Answer D is wrong. Learn more about this circuit in the read more section.

28. The driver's power window moves very slowly, and the window switch must be pressed several times to open or close the window. All of these could cause this problem EXCEPT:

  • A. A faulty circuit breaker.
  • B. A binding window gasket.
  • C. A binding window regulator.
  • D. An open in the window switch.

28.

Answer A is wrong. Many window motors and circuits contain self-resetting circuit breakers.

Answer B is wrong. A kink in the window gasket or run results in mechanical resistance and causes the window to drag.

Answer C is wrong. A loose or faulty window regulator causes window misalignment.

Answer D is correct. An open in the window switch prevents window motor operation. All the other choices would slow window operation.

Parking Brake Circuit

29. The parking brake warning light in the illustration above illuminates when commanded ON with a bidirectional scan tool. However, it does not illuminate when the parking brake is engaged. Which of the following is causing this condition?

  • A. An open at point A.
  • B. An open at point B.
  • C. An open at point C.
  • D. A short at point D.

29.

Answer A is wrong. An open at point A or a blown fuse element would affect the entire system.

Answer B is wrong. An open at point B, the parking brake switch would result in this condition. Commanding a warning light on with a bidirectional scan tool is an excellent way of checking the bulb.

Answer C is correct. An open at point C or the circuit/connector to the fluid level sensor would result in an unknown brake fluid level in the reservoir.

Answer D is wrong. A short-to-ground in the ground circuit would result in a redundant ground and would not affect the operation of the parking brake warning light.

30. Technician A says to use the scan tool's datastream feature to evaluate input from the (ECT) engine coolant temperature sensor. Technician B says to use a scan tool to analyze input from a fuel gauge that reads full at all times. Who is correct?

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

30.

Answer A is wrong. Use a scan tool to diagnose the ECT sensor and the engine fan control circuit.

Answer B is wrong. Use a scan tool to diagnose a fuel level sensors circuit.

Answer C is correct. Both technician A and B are correct.

Answer D is wrong. Both technician A and B are correct.