Intake Air Control Valve: Inspection

WARNING: This page is about a different car, the 2008 Toyota Camry Solara. However, it is still accessible from the selected car via links, so may be relevant.

INSPECT INTAKE AIR CONTROL VALVE ASSEMBLY NO.3
1. Apply 26.7 kPa (200 mmHg, 7.9 in.Hg) of vacuum to the actuator. Check if the actuator rod pulls the lever and causes the valve to rotate open, as shown in the illustration.
2. Apply the vacuum for 1 minute. Check that the actuator rod does not return.
  If the result is not as specified, replace the IAC valve assy No. 2.
  
  Fig 1: Inspecting Intake Air Control Valve Assembly
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002