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Air Control Valve: Inspection

  1. TURN AIR CONDITIONING SWITCH OFF 
  2. CHECK IDLE-UP 
    1. Start the engine and run it at idle.
    2. Fully turn the steering wheel.
    3. Check that the engine rotations decreases when the vacuum hose of the air control valve is pinched.
    4. Check that the engine rotations increases when the hose is released.
    Fig 1: Identifying Vacuum Hose Of Air Control Valve
    G03146376Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
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