VSV For Pressure Switching Valve: Inspection

REMOVE VSV

INSPECT VSV FOR OPEN CIRCUIT

Using an ohmmeter, check that there is continuity between the terminals.

Resistance:

VSV FOR PRESSURE SWITCHING VALVE TERMINALS CONTINUITY

At 20°C (68°F)	37 - 44 Ω
At 120°C (248°F)	51 - 62 Ω

If there is no continuity, replace the VSV.

Fig 1: Inspecting VSV For Open Circuit

G02600835

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

INSPECT VSV FOR GROUND
Using an ohmmeter, check that there is no continuity between each terminal and the body.

If there is no continuity, replace the VSV.

Fig 2: Checking Continuity Between VSV For Pressure Switching Valve Terminals & Body
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
INSPECT VSV OPERATION
1. Check that air does not flow from ports E to F.
  
  Fig 3: Checking Air Does Not Flow From Ports E To F
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Apply battery positive voltage across the terminals.
3. Check that air flows from ports E to F.
  
  Fig 4: Checking Air Flows From Ports E To F
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
If operation is not as specified, replace the VSV.
REINSTALL VSV