Automotive Servicing NC III Practice Questions - TESDA Automotive Servicing NC III Competency Assessment Exam

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A technician is testing a three-wire Throttle Position Sensor (TPS). With the ignition switch ON (engine off), the voltmeter connected to the signal wire shows 0.5V at closed throttle and sweep-tests smoothly up to 4.5V at wide-open throttle (WOT). How should the technician evaluate these readings?

The sensor is defective because the voltage does not reach a full 5.0V at WOT The sensor is operating normally and is within typical specifications There is a short-circuit to ground on the signal wire causing low voltage at WOT The sensor reference voltage line has excessive resistance

Correct Answer:

The sensor is operating normally and is within typical specifications

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