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Thermostatic Vacuum Switching Valve (Tercel)

  1. Drain coolant from radiator and remove TVSV. Immerse threaded end of valve in container of water with thermometer. See Figure.
  2. Using ice, cool water in container to below 45°F (7°C). Check that air flows from port J to port M and L and from port K to port N. Heat water to 63-122°F (17-50°C). Check that air flows from port K to port N and L and from port J to port M.
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