Ford EVP Sensor Test - EGR Valve Position Sensor Resistance & Pinout Diagram

This is a scanned page from an automotive service manual (likely a Haynes-style repair guide) showing a diagnostic test procedure for the EGR Valve Position (EVP) sensor. The page includes a photograph (figure 5.81) of a hand-held vacuum pump with gauge applied to the EGR valve while a digital multimeter (displaying a reading of 084) measures the EVP sensor's resistance. An inset diagram identifies the three terminals of the EGR Valve Position Sensor connector: VREF, EVP, and SIG. RTN. (signal return). The visible instructional text states that the sensor's resistance should be between no greater than 5,500 ohms with the sensor shaft extended and no less than 100 ohms with the sensor shaft retracted; if the readings fall outside this range, the EVP sensor should be replaced. The caption explains that the resistance of the EVP sensor should drop as vacuum is applied to the EGR valve. Partial text at the top left references checking for stray voltage at the harness with a module still disconnected. A reader can learn the EVP sensor pinout, the acceptable resistance range, and the vacuum-application test method for verifying EVP sensor operation.