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Toyota
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1992
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4Runner 2D Utility, Automatic
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Repair and Diagnosis
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Engine Controls - System/Component Tests
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Emission Systems & Sub-Systems
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Air Suction (As) System
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Vacuum Check Valve
Vacuum Check Valve
Ensure air flows from Orange port to Black port. Air should not flow from Black port to Orange port.
Fig 1: Testing Air Suction (AS) System (3.0L)
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Fig 2: Checking Vacuum Switching Valve
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Fig 3: Air Suction Sys Components & Operating Parameters (2.4L) Id
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Fig 4: Air Suction (AS) System Components & Operating Parameters (2.4L) ID
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Fig 5: Air Suction System Components & Operating Parameters (3.0L) ID
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Fig 6: Air Suction (AS) System Components & Operating Parameters (3.0L) ID
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002