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EGR Control Solenoid Valve (California)

  1. Label and disconnect vacuum hoses and wiring harness from solenoid valve. Connect a hand-held vacuum pump to vacuum nipple where Green-striped vacuum hose was connected.
  2. Apply battery voltage to one terminal of solenoid and ensure vacuum does not hold. While applying battery voltage to one terminal and grounding the other, ensure vacuum holds.
  3. Using an ohmmeter, measure resistance between solenoid valve terminals. At room temperature, resistance should be 36-44 ohms. Replace solenoid if resistance is not within specification.
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