EGR Control Solenoid: Testing and Inspection

INSPECTION
1. With engine at normal operating temperature (cooling fan comes on) and at normal idle speed, disconnect #16 hose from the EGR valve and measure vacuum at the hose. There should be no vacuum.
2. If vacuum exists, disconnect the two pin connector from the EGR Control Solenoid Valve and recheck for vacuum at the #16 hose. There should be no vacuum. If vacuum exists:
^ Verify correct vacuum hose routing.
^ If OK, replace EGR Control Solenoid Valve.
3. Turn ignition switch off, disconnect the two pin connector from the EGR Control Solenoid Valve. Start the engine and allow it to run at idle.
4. Measure voltage between the BLACK/YELLOW (+) terminal and chassis ground. Voltage should read battery voltage.
5. Connect battery voltage to the A terminal of the EGR Control Solenoid Valve. while watching the vacuum gauge, ground the B terminal of the EGR Control Solenoid Valve. Vacuum should read approx. 8 in. hg. within 1 second. If no vacuum exists:
^ Remove lower hose at EGR Control Solenoid Valve and verify vacuum from the EGR Vacuum Control Valve.
^ Verify vacuum hose routing and no leaks,
^ If vacuum is present at lower hose but no vacuum exists when the EGR Control Solenoid Valve is triggered, replace the EGR Control Solenoid Valve.