Vacuum Switching Valve: Inspection

WARNING: This page is about a different car, the 2006 Lexus IS 350. However, it is still accessible from the selected car via links, so may be relevant.

INSPECT VACUUM SWITCHING VALVE (EVAP VSV)

Measure the resistance of the VSV.

Standard resistance

TESTER CONNECTION SPECIFIED CONDITION

Tester Connection	Specified Condition
1 - 2	26 to 30 Ω at 20°C (68°F)
1 - Body ground 2 - Body ground	10 MΩ or higher

Fig 1: Measuring Resistance Of VSV

If the result is not as specified, replace the VSV.

Check operation of the VSV.
1. Check that air does not flow from port E to port F.
  
  Fig 2: Checking Air Flow From Port E To Port F
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. 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 VSV.
  
  Fig 3: Applying Battery Voltage Across Terminals 1 And 2
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002