EGR Control Solenoid: Testing and Inspection

NOTE: When disconnecting the vacuum hose, always make a mark so that it can be reconnected at original position.

1. Disconnect the vacuum hose from the electric EGR transducer.
2. Disconnect the harness connector.





3. Plug the nipple (A).
4. Connect the hand vacuum pump to the nipple (B).
5. Connect a positive pressure type hand pump to the nipple (C).
6. Use a jumper wire to connect the solenoid terminal to the battery terminal.
7. Turn on and off the negative battery terminal side jumper wire and apply vacuum and positive pressure to check airtightness.

Jumper wire Positive pressure Vacuum status
status

Disconnected Maintained

Connected Applied Leaks

Not applied Maintained





8. Measure the resistance between the terminals of the solenoid.

Standard value: 25 - 35 ohms [at 20° C (68° F)]