EGR Control Solenoid: Testing and Inspection

1. Disconnect wire harness from the number 2 control box.
2. Disconnect number 10 vacuum hose from the vacuum hose manifold, then connect suitable hand vacuum pump to the hose. Ensure there is air flow.
3. If air flow is not present, replace EGR control solenoid valve and retest.
4. Connect positive lead of a 12 volt battery to black/yellow terminal of number 2 control box and the negative lead to the blue/red terminal on Accord or red terminal on Prelude.
5. Apply air pressure to the number 10 vacuum hose. Ensure there is no air flow.
6. If air flow is present, replace EGR control solenoid valve.