ASE A6 Electrical Electronics Practice Test

Automotive electrical symbol

11. The electrical symbol above is:

  • A. A resistor.
  • B. A splice.
  • C. An inductor.
  • D. A motor.

11.

Answer A is wrong. This is the symbol for a motor. Sometimes it has an M in the circle.

Answer B is wrong. Diagrams use symbols to represent components in a circuit. This is the symbol for a motor.

Answer C is wrong. This is the symbol for a motor.

Answer D is correct. View the symbol chart in the read more section for more symbols used in automotive schematics.

12. Two technicians are discussing a burned fuse element in a fan circuit. Technician A says the burned fuse was caused by high resistance in the fan circuit. Technician B says the burned fuse was the result of an open in this circuit. Who is correct?

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

12.

Answer A is wrong. Unwanted resistance in a circuit results in lower than normal current flow.

Answer B is wrong. A short in the circuit results in too much current and a blown circuit protection device (fuse). A blown fuse causes an open in the circuit. This is intentional. A fuse is a designed to protect electrical circuits.

Answer C is wrong. Neither technician is correct.

Answer D is correct. Neither technician is correct.

13. The dome light in a vehicle flickers on and off with the switch in the on position. The MOST likely cause of this problem is:

  • A. A short to ground between the power source and the dome light.
  • B. An open in the wire leading from the power source to the dome light.
  • C. A loose connection between the power source and the dome light.
  • D. A burned dome bulb.

13.

Answer A is wrong. A short to ground will most likely result in a blown fuse and no illumination.

Answer B is wrong. An open in the circuit will result in no illumination of the dome light.

Answer C is correct. Look for loose connections in the dome circuit, possibly the bulbs socket. When there is an intermittent problem, look for a loose wire, plug, or ground connection resulting in this condition.

Answer D is wrong. A burned bulb would result in no illumination.

14. An electric seat will not move backward or forward. A noise is heard coming from the seat when the switch is pressed. The MOST likely cause of this problem is:

  • A. A short to ground between the power source and the seat.
  • B. A napkin wedged into the seat rail.
  • C. An intermittent open in the connection between the power source and the seat motor.
  • D. A loose plug from the harness to the seat motor.

14.

Answer A is wrong. A short to ground will most likely result in a blown fuse and no operation.

Answer B is correct. If something like a newspaper is wedged into the seats rail, the excessive resistance will result in little, or no seat movement. It may also damage the motor. Visually inspect the seat rail for debris.

Answer C is wrong. An intermittent open will result in on off operation or no operation at all. Sometimes the seat would move, other times it wouldn't.

Answer D is wrong. A loose plug will result in intermittent operation.

15. Two technicians are discussing an analog transmission range sensor on a late model vehicle. Technician A says that since these sensors use resistance to indicate gear selection, they can be tested with an ohmmeter. Technician B says to start the car and make sure the circuit is powered before using the meter. Who is correct?

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

15.

Answer A is correct. Ohmmeters test sensors and circuits for resistance.

Answer B is wrong. Never power a circuit when using an ohmmeter, this may damage the tester.

Answer C is wrong. Technician A is correct.

Answer D is wrong. Technician A is correct.