
The throttle position sensor (TPS) is a critical component in a vehicle's fuel system. It provides crucial data to the engine control unit (ECU) to help regulate the amount of fuel delivered to the engine. In this article, we'll take a closer look at the 5-pin TPS and how to maintain it for optimal performance.
Function of the Throttle Position Sensor
The TPS is responsible for measuring the angle of the throttle butterfly valve. As the throttle is opened, the voltage signal from the TPS increases. This signal is used by the ECU to determine the engine's load and adjust the fuel delivery accordingly.
Types of TPS Sensors
There are several types of TPS sensors, including 3-pin and 5-pin models. The 5-pin TPS is commonly used in modern vehicles and provides more accurate readings compared to the 3-pin version.
5 Pin TPS Wiring Diagram
The following is a typical wiring diagram for a 5-pin TPS:
- Pin 1: Ground
- Pin 2: 5V reference voltage
- Pin 3: Signal Output
- Pin 4: Not Used
- Pin 5: Not Used
It's important to note that the wiring diagram can vary depending on the make and model of the vehicle. The colors of the wires may also vary, so it is important to check the wiring diagram for the specific vehicle.
Symptoms of a Faulty TPS
A faulty TPS can cause several problems, including:
- Engine stalling
- Engine misfires
- Poor fuel economy
- Unstable idle
Maintenance and Repair
How to Reset the TPS Sensor
If the TPS needs to be reset, follow these steps:
- Disconnect the electrical connector from the TPS.
- Locate the TPS reset button or jumper.
- Press the reset button or connect the jumper to reset the TPS.
Calibrating the TPS
Proper calibration of the TPS is important to ensure accurate readings. There are several methods for calibrating the TPS, including using a digital multimeter or a specialized tool. It is recommended to consult the manufacturer's specifications for the proper calibration method for a specific vehicle.
How to Reset the Electronic Throttle Control (ETC) Manually
If the electronic throttle control (ETC) needs to be reset, follow these steps:
- Locate the accelerator pedal position sensor.
- Disconnect the battery.
- Reconnect the battery and start the engine.
- Drive the vehicle to reset the ETC.
Conclusion
The 5 pin throttle position sensor plays a crucial role in a vehicle's fuel system. Understanding how to maintain and repair it can help ensure optimal performance. From resetting the TPS and calibrating it to resetting the electronic throttle control, following the steps outlined in this article can help keep the TPS working properly.

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