Vacuum Switching Valve (For Engine Mounting) 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)	37 to 44 Ω
1 - Body ground 2 - Body ground	20°C (68°F)	1 MΩ or higher

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

   Text in Illustration

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





2. Apply battery voltage across terminals 1 and 2.
   

   Text in Illustration

   *a	Port E
   *b	Port F
   *c	Air

3. Check that air flows from port E to port F.
   If the result is not as specified, replace the vacuum switching valve sub-assembly.