Tips Sahabat

Understanding the Definition and Functions of Throttle Position Sensor

09 April 2025
pengertian dan fungsi fungsi throttle position sensor

For you motor vehicle users with injection type, have you ever heard the term TPS or throttle position sensor? It turns out this part is quite important for you to know, because damage to the TPS can make the motorcycle's acceleration less responsive and slow.

So, what is the actual definition and function of the throttle position sensor? Check out the following review.

Understanding Throttle Position Sensor

TPS or throttle position sensor is a sensor that exists in the EFI system. Broadly speaking, the function of the TPS is to determine the magnitude of the opening angle of the throttle valve

Where the throttle position sensor uses a variable resistor as the medium, to produce a voltage magnitude that is adjusted according to the size of the opening angle of the throttle valve.

The magnitude of the opening angle of the throttle valve will then be converted by this throttle position sensor into a form of DC voltage. The voltage source is provided by the ECU or engine control unit

The larger the angle that opens on the throttle valve, the greater the output voltage produced by the TPS.

The change in the amount of voltage generated by the throttle position sensor will be interpreted by the ECU system as the magnitude of the opening angle of the throttle valve that exists in the throttle body

Read also: This is How the Diesel Car Electrical System Works

Function of Throttle Position Sensor

If you already know the general function of the TPS, you should also know the detailed functions of this part. 

1. Knowing the Engine Mode and Position 

Because the ECU uses the TPS or throttle position sensor to know the engine mode and position, in order to choose the right time for the ignition process and injection timing.

2. Turning Off the AC Switch 

When the throttle valve is fully open, the throttle position sensor will automatically turn off the AC switch to control emissions. This indicates the acceleration state of the vehicle or full load, so the ECU can use this indicator to turn off the AC.

3. Checking Air and Fuel

Fuel mixture correction, in this case air and fuel ratio, is performed by the ECU system based on data from various sensors. 

4. Checking Power Increase in the Engine

This part also performs fuel cut control where the fuel cut means stopping the supply of fuel. The fuel supply is stopped by deactivating the injectors in all engine cylinders.

When the engine is in a deceleration position, the fuel cut control will only occur. That is when the engine speed exceeds two thousand rpm, and the gas pedal is suddenly released so that the throttle valve will show a fully closed position. 

From the understanding and functions of the throttle position sensor, it is clear that this component is very important in the engine. 

For most car engines currently on the market, there are at least three types of TPS used. Namely the variable resistor type, the contact point type, and the combination type that combines contact points and variable resistors.

At a glance, the way the throttle position sensor works and its functions may seem complicated to understand. However, if you delve deeper into it, this part will appear much simpler. 

Its functions are indeed quite numerous and varied, making its presence very important in your vehicle.

Read also: Improve Performance, Here are 5 Important Sensors in the Fuel Injection System

Others Tips Sahabat
Ketahui Persyaratan Perpanjang SIM 2025 Online dan Offline
Know the Requirements for Extending SIM 2024 Online and Offline
Knowing the various requirements for extending a driver's license both offline and online is important. By understanding the requirements, the extension process will be easier. Here are the requiremen
Jadwal Ganjil Genap Jakarta Hari Ini: Jam, Jalur & Peraturan Terbaru
Odd-Even Schedule Jakarta Today: Time, Routes & Latest Regulations
The odd-even policy in Jakarta is a regulation implemented by the city government to control the number of vehicles passing through certain roads at specific times. This policy not only serves as a so
daihatsu zebra
Introducing the Daihatsu Zebra, History, Specifications, Advantages, Price, and How to Calculate Its Tax
The Daihatsu Zebra is one of the legendary minivans that continues to operate on the roads to this day. You can see for yourself on the streets that there are still people using cars with unique and s
STNK Diblokir ETLE? Ini Penyebab dan Cara Mengatasinya!
STNK Blocked by ETLE? Here are the Causes and How to Overcome It!
The implementation of ETLE as the latest ticketing system is now widespread in Indonesia. Although the ETLE ticketing system does not directly involve traffic police on the streets like the manual tic
© Copyright 2025 PT Astra Daihatsu Motor. All rights reserved
Privacy Policy
Contact Us