VACUUM SWITCHING VALVE ON-VEHICLE INSPECTION

PROCEDURE


  1. INSPECT VACUUM SWITCHING VALVE (for EGR Cut)


    1. A01XIV2E01
      Text in Illustration
      *a

      Component without harness connected

      (Vacuum Switching Valve)

      Measure the resistance according to the value(s) in the table below.

      Standard Resistance
      Tester Connection Condition Specified Condition
      1 - 2 20°C (68°F) 37 to 44 Ω

      1 - Body ground

      2 - Body ground

      		 20°C (68°F) 1 MΩ or higher

      If the result is not as specified, replace the vacuum switching valve.

    2. Check operation of the vacuum switching valve.


      1. A01XLYFE03
        Text in Illustration
        *1 Port E
        *2 Filter

        Attach a vacuum pump to port E and check that vacuum does not flow from the filter to port E.

      2. A01XGW7E03
        Text in Illustration
        *1 Port E
        *2 Filter

        Apply battery voltage across terminals 1 and 2.

      3. Attach a vacuum pump to port E and check that vacuum flows from the filter to port E.

        If the result is not as specified, replace the vacuum switching valve.

  2. INSPECT VACUUM SWITCHING VALVE (for EGR Bypass Valve)


    1. A01XLO5E01
      Text in Illustration
      *a

      Component without harness connected

      (Vacuum Switching Valve)

      Measure the resistance according to the value(s) in the table below.

      Standard Resistance
      Tester Connection Condition Specified Condition
      1 - 2 20°C (68°F) 37 to 44 Ω

      1 - Body ground

      2 - Body ground

      		 20°C (68°F) 1 MΩ or higher

      If the result is not as specified, replace the vacuum switching valve.

    2. A01XKA3E01
      Text in Illustration
      *1 Port E
      *2 Port F
      *3 Vacuum
      *4 Air
      *5 Filter

      Check operation of the vacuum switching valve.


      1. When a vacuum of 67 kPa (500 mmHg, 19.7 in.Hg) is applied to port F, check that air flows from port E to the filter.

      2. A01XJWDE01
        Text in Illustration
        *1 Port E
        *2 Port F
        *3 Air

        Apply battery voltage across terminals 1 and 2.

      3. Check that air flows from port E to port F.

        If the result is not as specified, replace the vacuum switching valve.