The throttle position sensor is an electrical device that’s located on the engine. When the throttle is fully open, it senses the position of the plate. When the vehicle is closed, the sensor sends a signal to the electronic control unit (ECU) to adjust the fuel delivery and timing.
The wiring diagram of the throttle position sensor shows the various electrical connections between the components of a vehicle and its engine.
3 Pin Throttle Position Sensor Wiring Diagram
Three wires are used to wire the throttle position sensor. These wires are known as the Hot Power, the Ground, and the Signal. The readings from the signal wire are sent to the engine’s control unit.
The wires are connected to the car’s computer. The hot wire is used as a feed source for the sensor. It’s indicated in the wiring diagram as providing 5-volt power to the device. The ground wire is also taken from the control unit. This component provides ground to the sensor.
A third wire is used to send the data from the sensor to the computer. This wire can generate a 5-volt or 0 to 5-volt signal. When the throttle is wide open or closed, this wire should be close to 5V or 0V. The output wire of the sensor is then monitored by the computer to determine the position of the engine. These kinds of sensors are typically utilized in cable-operated throttle bodies, which are designed to operate at a constant speed.