ELECTRIC EGR CONTROL VALVE INSPECTION


  1. INSPECT ELECTRIC EGR CONTROL VALVE ASSEMBLY


    1. Inspect the vacuum regulating valve.


      1. A01BEGXE01

        Check that there is continuity between the terminals.

        Standard resistance
        11 to 13 Ω (20°C)

      2. Apply battery voltage across the terminals, and check that air flows from each port.

        Standard
        Measuring Condition Measuring Port Airflow
        No continuity E←→Ventilation port Airflows
        No continuity

        Ventilation port←→F

        E←→F

        		 Air does not flows
        Continuity E←→F Airflows
        Continuity

        Ventilation port←→E

        Ventilation port←→F

        		 Air does not flows

    2. Inspect the EGR valve.


      1. A01BFV9

        When a vacuum of 26.7 kPa (200 mmHg, 7.87 in.Hg) is applied to the diaphragm chamber, check that the shaft rises and that air flows out.

      2. Maintaining the above conditions, check again that there are no leaks and that the shaft does not lower.

      3. Check that the valve is not stuck and does not have heavy carbon deposits.

        If the result is not as specified, replace the EGR valve.

    3. Inspect the EGR valve position sensor.


      1. A01BC0TE01

        Using an ohmmeter, measure the resistance between terminals 1 (VC) and 2 (E2) of the EGR valve position sensor.

        Standard resistance
        4.0 to 6.0 kΩ at 20°C (68°F)

        If the result is not as specified, replace the EGR valve.

      2. A01BFK9E01

        Create a vacuum in the diaphragm chamber. Measure the resistance between terminals 3 (EGLS) and (E2) of the lift sensor when the valve is fully opened and fully closed.

        Standard resistance
        EGR Valve Condition Specified Condition
        Fully opened 3.9 kΩ at 20°C (68°F)
        Fully closed 1.0 kΩ at 20°C (68°F)

        Tech Tips

        The resistance increases in proportion to the opening angle of the EGR valve.

        If the result is not as specified, replace the EGR valve.