EGR Electronic Vacuum Regulator Solenoid: Testing and Inspection

1. Disconnect the vacuum hose from the EGR vacuum regulator solenoid valve.

NOTE: When disconnecting the vacuum hose, always make sure that it can be reconnected at its original position.

2. Disconnect the harness connector.




3. Connect a hand vacuum pump to nipple (A) of the EGR vacuum regulator solenoid valve. (Refer to the illustration at left.)




4. As described in the chart below, check airtightness by applying a vacuum with voltage applied directly from the battery to the EGR solenoid and without applying voltage.




5. Measure the resistance between the terminals of the EGR vacuum regulator solenoid valve.

Standard value: 29 - 35 Ohm @ 20 °C (68 °F)

6. Replace the EGR vacuum regulator solenoid valve if resistance is out of specification.