The pic is labeled incorrectly. The part identified as 'EGR Solenoid' is actually a transducer which is actually a misnomer as it is more of a regulator. Between it and the vacuum nipple on the intake manifold that supplies its vacuum is a small solenoid actuated valve that the ECU controls electrically. This is the valve that opens and allows vacuum to reach the EGR transducer and EGR valve.
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