Intake Manifold: Inspection

WARNING: This page is about a different variant/trim than selected.

INSPECT INTAKE AIR CONTROL VALVE
1. Inspect the diaphragm.
  1. Using a vacuum pump, apply a vacuum of 60 kPa (450 mmHg, 17.7 in.Hg) or higher to the diaphragm chamber. Wait for 1 minute and check that the needle of the vacuum pump does not lower.
    If the result is not as specified, replace the intake manifold.
2. After applying vacuum in the step above, check that the actuator rod operates.
  
  Fig 1: Inspecting Intake Air Control Valve
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
INSPECT VACUUM TANK AND CHECK VALVE
1. Disconnect the vacuum hose from the check valve.
2. Using a vacuum pump, apply vacuum to the check valve. Wait 1 minute and check that the needle of the vacuum pump does not lower.
  If the result is not as specified, replace the check valve.
3. Connect the vacuum hose to the check valve.
  
  Fig 2: Inspecting Vacuum Tank And Check Valve
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
4. Using a vacuum pump, apply a vacuum of 60 kPa (450 mmHg, 17.7 in.Hg) or higher to the vacuum tank. Wait 1 minute and check that the needle of the vacuum pump does not lower.
  If the result is not as specified, replace the intake manifold.
  
  Fig 3: Applying Vacuum To Vacuum Tank
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002