Acoustic Control Induction System (ACIS): Inspection

INSPECT INTAKE AIR CONTROL VALVE
1. With 53.3 kPa (400 mmHg, 15.75 in.Hg) of vacuum applied to the actuator, check that the actuator rod moves.
  
  Fig 1: Checking Movement Of Actuator Rod
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  
  If operation is not as specified, turn the adjusting screw.
2. 1 minute after applying the vacuum in (a), check that the actuator rod does not return.
  
  Fig 2: Turning Adjusting Screw
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
INSPECT VACUUM TANK
1. Check that air flows from ports A to B.
2. Check that air does not flow ports B to A.
  
  Fig 3: Inspecting Vacuum Tank (1 Of 2)
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
3. Plug port B with your finger, and apply 53.3 kPa (400 mmHg, 15.75 in.Hg) of vacuum to port A, and check that there is no change in vacuum after 1 minute.
  
  Fig 4: Inspecting Vacuum Tank (2 Of 2)
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
If operation is not as specified, replace the vacuum tank.
INSPECT VSV (See INSPECTION )