Question

Technician A says that reed switches produce an alternatíhg current (AC) signal.

Technician B says that a magnetic vehicle speed sensor (VSS) can be diagnosed by
observing the pattern on a lab scope and comparing it to a known good pattern.
Who is correct?
1) Technician A
2) Technician B
3) Both Technician A and Technician B
4) Neither Technician A nor Technician B

Answer 1

Technician A is incorrect as reed switches produce a DC signal. Technician B is correct as a magnetic vehicle speed sensor (VSS) can be diagnosed by observing its pattern on a lab scope.

Step-by-step explanation:

Technician A is not correct. Reed switches produce a direct current (DC) signal, not an alternating current (AC) signal. A reed switch consists of two metal reeds that come into contact when a magnetic field is present. This completes a circuit and allows current to flow, creating a DC signal.

Technician B is correct. A magnetic vehicle speed sensor (VSS) can be diagnosed by observing the pattern on a lab scope and comparing it to a known good pattern. The VSS generates a varying voltage signal that corresponds to the vehicle's speed. By comparing the pattern, a technician can determine if the sensor is functioning properly or not.

Therefore, the correct answer is Technician B.

Learn more about Reed switches and magnetic vehicle speed sensors (VSS)