Which sensor measures the rotation angle of the throttle blade?

Which sensor measures the rotation angle of the throttle blade?

• A. TPS
• B. MAP Sensor
• C. MAF Sensor
• D. IAT Sensor

Answer: (A)

The throttle position sensor directly tracks how far the throttle blade is open, i.e., its rotation angle. It sits in the throttle body and converts the blade’s angle into an electrical signal (often a voltage) that the engine control unit uses to know how much air is allowed into the engine. This information is essential for controlling fuel delivery and idle speed. The other sensors measure different things: the MAP sensor gauges manifold absolute pressure, the MAF sensor measures the mass/flow of incoming air, and the IAT sensor measures intake air temperature. None of these report the throttle blade’s rotation angle, which is why the throttle position sensor is the correct choice.

The throttle position sensor directly tracks how far the throttle blade is open, i.e., its rotation angle. It sits in the throttle body and converts the blade’s angle into an electrical signal (often a voltage) that the engine control unit uses to know how much air is allowed into the engine. This information is essential for controlling fuel delivery and idle speed.

The other sensors measure different things: the MAP sensor gauges manifold absolute pressure, the MAF sensor measures the mass/flow of incoming air, and the IAT sensor measures intake air temperature. None of these report the throttle blade’s rotation angle, which is why the throttle position sensor is the correct choice.