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 hoses (yellow stripe, white stripe) from the solenoid valve.
2. Disconnect the harness connector.





3. Connect a hand vacuum pump to the nipple to which the white-striped vacuum hose was connected.
4. Check airtightness by applying a vacuum with voltage applied directly from the battery to the EGR control solenoid valve and without applying voltage.

Battery voltage B Nipple condition Normal condition

Not applied Open Vacuum maintained
Applied Open Vacuum leaks
Closed Vacuum maintained






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

Standard value: 36 - 44 ohms [at 2O° C (68° F)]