Intake Air Control System (1GR-FE): Inspection

WARNING: This page is about a different car, the 2004 Toyota 4Runner. However, it is still accessible from the selected car via links, so may be relevant.

INSPECT INTAKE AIR SURGE TANK
1. Inspect the diaphragm.
  1. Check that the lever moves when vacuum of 26.6 kPa (200 mmHg) is applied with the mighty bag on.
  2. Check that the vacuum of 26.6 kPa (200 mmHg) is sustained for 1 minute in the above state.
    
    Fig 1: Inspecting Intake Air Surge Tank
    Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
INSPECT VACUUM SWITCHING VALVE ASSY NO.1
1. Inspect the VSV for open circuit.
  1. Using an ohmmeter, check that there is continuity between each terminals.
  Fig 2: Checking Continuity Between Each Terminals
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  
  Resistance: 33-39 Ω at 20°C (68°F)
2. Inspect the VSV for ground.
  1. Using an ohmmeter, check that there is no continuity between each terminal and the body.
    
    Fig 3: Checking For Continuity Between Each Terminal And Body
    Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
3. Inspect the VSV operation.
  1. Check that air flows from port E to the filter.
    
    Fig 4: Checking Air Flow From Port E To Filter
    Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  2. Apply battery positive voltage across the terminals.
  3. Check that air flows from port E to port F.
    
    Fig 5: Checking Air Flow From Port E To Port F
    Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002