Ford TPS Throttle Position Sensor Wiring Diagram - VREF, TP SIG, SIG RTN Colors

This document is a color schematic diagram of a Throttle Position Sensor (TPS), showing its internal construction and wiring connections. The illustration depicts the sensor as a circular component with two labeled internal parts: the "Rotating Dial" (the wiper arm that sweeps across the sensor as the throttle moves, shown with directional arrows indicating rotation) and the "Resistive Element" (shown in red as an arc-shaped track inside the sensor housing). Three terminal wires emerge from the bottom of the sensor, each labeled with its function and wire color: VREF (reference voltage) on an Orange wire, TP SIG (throttle position signal) on a Green wire, and SIG RTN (signal return/ground) on a Black wire. A reader can learn from this diagram how a potentiometer-style throttle position sensor works — the rotating wiper contacts the resistive element and outputs a variable voltage on the signal wire proportional to throttle angle — and which wire color corresponds to which circuit, useful for testing or troubleshooting the sensor with a multimeter. The document was uploaded to a 1990 Ford Bronco gallery, though the diagram itself contains no year, make, or model markings.