On-Vehicle Inspection

WARNING: This page is about a different car, the 2007 Lexus SC 430. However, it is still accessible from the selected car via links, so may be relevant.

CHECK INTAKE AIR CONTROL VALVE ACTUATOR
1. Connect the vacuum pump to the actuator.
2. Apply a vacuum of 39.9 kPa (300 mmHg, 11.8 in.Hg) to the vacuum tank.
3. 1 minute after applying the vacuum, check that the rod's position is as it was before applying the vacuum.
  If the result is not as specified, replace the actuator.
  
  Fig 1: Connecting Vacuum Pump To Actuator
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002