EGR Control Solenoid: Testing and Inspection

1. Check vacuum circuit continuity in Vacuum Switching Valve (VSV) by blowing air into pipe.






a. Connect the VSV terminals to the battery terminals as illustrated.

b. Blow air into a pipe and check that the VSV is pen.






c. Disconnect the battery.

d. Blow air into a pipe and check that the VSV is closed. If a problem is found, replace the VSV.

2. Check For Short Circuit






Using an ohmmeter, check that there is no continuity between the terminals and the VSV body. If there is continuity, replace the VSV.

3. Check For Open Circuit






Using an ohmmeter, measure the resistance between the terminals.

Specified resistance: 37 - 44 ohms at 20°C (68°F)

If the resistance is not within specification, replace the VSV.