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Check Valves

WARNING: This page is about a different car, the 1990 Toyota Land Cruiser and 1989 Toyota Land Cruiser. However, it is still accessible from the selected car via links, so may be relevant.
  1. Inspect check valve "A" by blowing air from each side of valve. See Figure. Ensure air does not flow from manifold side of valve to Air Switching Valve (ASV).
  2. Air should flow from Air Switching Valve ASV to manifold. If check valve does not function as described, replace valve.
  3. Inspect check valve "B". Ensure air does not flow from Black to Orange side of nozzle. Air should flow from Orange to Black side. If check valve does not function as described, replace valve.
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