Egr Bypass Valve Switching Valve Inspection

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

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

1. 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.
   

   Text in Illustration

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





2. Apply battery voltage 12V across terminals 1 and 2.
   

   Text in Illustration

   *a	Air
   *b	Port F
   *c	Port E

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.