EGR BYPASS VALVE SWITCHING VALVE INSPECTION

PROCEDURE

1. INSPECT NO. 1 VACUUM SWITCHING VALVE ASSEMBLY

   
   
   1. 

      *a	Component without harness connected (No. 1 vacuum switching valve assembly)

      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) 33 to 39 Ω 1 - Body ground 2 - Body ground 20°C (68°F) 1 MΩ or higher

      If the result is not as specified, replace the No. 1 vacuum switching valve assembly.

   2. Check operation of the No. 1 vacuum switching valve assembly.

      
      
      1. 

         *a	Vacuum
         *b	Air
         *c	Port E
         *d	Port F
         *e	Filter

         When a vacuum of 60 kPa (450 mmHg, 18 in.Hg) is applied to port F, check that air flows from port E to the filter.

      2. 

         *a	Air
         *b	Port F
         *c	Port E

         Apply battery voltage 12V 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 No. 1 vacuum switching valve assembly.