A 4 pin throttle position sensor is an automotive component that can be used to monitor the position of the vehicle’s throttle. This type of sensor has four wires. Two of these are signal wires, and the other two are earth and hot.
4 Pin Throttle Position Sensor Wiring Diagram
- Signal Wire (Sensor 1)
- Signal Wire (Sensor 2)
- Hot Power Wire (Reference voltage comes from the ECU)
- Ground Wire
The two potentiometers inside the sensor have common hot and earth wires. These wires are used to transmit the data to the car’s electronic control unit (ECU). The other two wires are utilized for powering the sensor and grounding it. The car’s computer uses 5 volts of power to supply the required voltage to the sensor.
The two potentiometers inside the throttle position sensor are designed to output a certain amount of voltage. This allows the device to measure the current coming from the two points. This allows it to determine if the vehicle’s throttle is closed or open.