Ford EGR Valve Position Sensor (EVP) Wiring Diagram - VREF, SIG RTN, EVP Pins

This document is a simple wiring/test diagram for a Ford EGR Valve Position Sensor (EVP). It shows the sensor's three-pin connector (drawn as a round connector face) and identifies the three circuits by EEC pin number and name: pin 26 VREF (reference voltage), pin 46 SIG RTN (signal return), and pin 27 EVP (sensor signal). To the right of the connector, the diagram depicts a resistor substitution/test circuit built from resistors: two black-colored resistors specified as 3.9K ohm 1/2-watt units and one white-colored resistor specified as 390 ohm 1/2-watt. This arrangement allows a technician to simulate or test the EVP sensor circuit, verifying VREF, signal return, and EVP signal wiring to the EEC processor. The image is credited "Copyright 2004 FordFuelInjection.com." The document does not state a specific vehicle year, model, or engine application, but it was uploaded to a 1990 Ford Ranger gallery, and the pin numbering (26, 46, 27) is consistent with Ford EEC-IV systems. Readers can learn the EVP connector pinout, the associated EEC pin numbers, and the resistor values needed to build a simple EVP simulator/test tool.