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Vacuum Tank

  1. Disconnect vacuum hoses from vacuum tank, located below intake manifold. See Figure. Apply air pressure to port "A" on vacuum tank. Ensure air passes out port "B". Perform STEP 1. See Fig 1. Apply air pressure to port "B". Ensure air does not pass out port "A". Perform STEP 2. See Fig 1.
  2. Using vacuum pump, apply approximately 20 in. Hg of vacuum to port "A". Perform STEP 3. See Fig 1. Ensure vacuum reading will hold for at least one minute. Replace vacuum tank if defective. Remove vacuum pump. Reconnect vacuum hoses.
Fig 1: Checking Vacuum Tank (Turbo)
G93C79576Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
NOTE: Variable induction VSV may also be referred to as T-VIS VSV.