An AC voltage generating wheel speed sensor is being diagnosed. Technician A says the computer reacts to the frequency of the signal. Technician B says the computer reacts to how much voltage is produced. Who is correct?
A) Technician A only
B) Technician B only
C) Both A and B
D) Neither A nor B

Question

Quizplus · Accepted Answer

Technician A is correct because an AC voltage generating wheel speed sensor's output is primarily interpreted by the frequency of the signal it produces. The frequency increases with wheel speed, which is what the computer uses to determine the speed of the wheel. Technician B's statement about the computer reacting to the amount of voltage is less accurate for this context, as the voltage level can vary with speed, but it's the frequency of the AC signal that is directly related to the wheel speed.

An AC Voltage Generating Wheel Speed Sensor Is Being Diagnosed