EGR Control Solenoid: Testing and Inspection

INSPECTION

NOTE: When disconnecting the vacuum hose, make an identification mark on it so that it can be reconnected to the original position.

1. Disconnect the vacuum hoses (yellow and green stripe) from the solenoid valve.
2. Disconnect the harness connector.





3. Connect a hand vacuum pump to the nipple to which the green-striped vacuum hose was connected.





4. Apply a vacuum pump and check for air-tightness when voltage applied directly to the EGR solenoid when the voltage is discontinued.

Battery positive voltage applied: Vacuum is maintained
Battery positive voltage discontinued: Vacuum leaks





5. Measure the resistance between the terminals of the solenoid valve.

Standard value: 36-44 Ohms [at 20°C (68°F)