EGR Control Solenoid: Testing and Inspection

INSPECTION

1. Inspect vacuum switching valve for open circuit.





- Using an ohmmeter, check that there is continuity between the terminals.

Resistance at 20° C (68° F): 33 - 39 ohms

- If there is no continuity, replace the vacuum switching valve.
2. Inspect vacuum switching valve for ground.





- Using an ohmmeter, check that there is no continuity between each terminal and the body.
- If there is continuity, replace the vacuum switching valve.
3. Inspect vacuum switching valve operation.





- Check that the air flows from port E to port G.





- Apply battery voltage across the terminals.
- Check that the air flows from port E to the filter.
- If operation is not as specified, replace the vacuum switching valve.