ASE A6 Electrical Electronics Practice Test

27. Technician A says the resistance of the negative temperature coefficient sensor in the heated seat above 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


Heated Seat Circuit

Answer A is wrong. Both technicians are correct. It’s an NTC or negative temperature coefficient sensor; this sensor's resistance decreases as the seat temperature increases.

Answer B is wrong. These two heating elements run in series. An open or break in this wire will disable both heating elements.

Answer C is correct. Both technicians are correct.

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