Intake Air Control System: Inspection: Inspection

INSPECT INTAKE AIR CONTROL VALVE
1. With 39.9 kPa (300 mmHg, 11.8 in.Hg) of vacuum applied to the actuator, check that the actuator rod moves (procedure [A]).
  
  Fig 1: Inspecting Intake Air Control Valve
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. One minute after applying the vacuum in procedure [A], check that the actuator rod does not return.
  If operation is not as specified, replace the intake manifold.
INSPECT VACUUM SWITCHING VALVE ASSEMBLY
1. Using an ohmmeter, check that there is continuity between each terminal.
  
  Fig 2: Checking There Is Continuity Between Each Terminal
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  
  Resistance
  
  33 to 39 Ω at 20°C (68°F)
  
  If there is no continuity, replace the VSV.
2. Using an ohmmeter, check that there is no continuity between each terminal and the body.
  
  Fig 3: Checking There Is No Continuity Between Each Terminal & Body
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  
  Resistance
  
  10 kΩ or higher
  
  If there is continuity, replace the VSV.
3. Check that air flows from port E to the filter.
  
  Fig 4: Checking If Air Flows From Port E To Filter
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
4. Apply battery voltage across the terminals.
  
  Fig 5: Checking If Air Flows From Port E To Port F
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
5. Check that air flows from port E to port F.
  If operation is not as specified, replace the VSV.