Intake Air Control System (2UZ-FE): Inspection

WARNING: This page is about a different car, the 2005 Toyota 4Runner. However, it is still accessible from the selected car via links, so may be relevant.

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.
2. One minute after applying the vacuum in step (a), check that the actuator rod does not return.
  If operation is not as specified, replace the intake manifold.
Fig 1: Inspecting Intake Air Control Valve
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INSPECT VACUUM SWITCHING VALVE ASSY FOR IAC VALVE
1. Using an ohmmeter, check that there is continuity between each terminal.
  Resistance: 33 to 39 ohms at 20°C (68°F)
  
  If there is no continuity, replace the VSV.
  
  Fig 2: Checking Continuity Between Terminal Using Ohmmeter
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Using an ohmmeter, check that there is no continuity between each terminal and the body.
  Resistance: 10 k-ohm or higher
  
  If there is continuity, replace the VSV.
  
  Fig 3: Checking Continuity Between Terminal and Body Using Ohmmeter
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
3. Check that air flows from port E to the filter.
  
  Fig 4: Checking Air Flows From Port E To Filter
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4. Apply battery voltage across the terminals.
5. Check that air flows from port E to port F.
  If operation is not as specified, replace the VSV.
Fig 5: Applying Battery Voltage Across Terminals
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002