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Thermostatic Vacuum Switching Valve Starlet

  1. Drain coolant from radiator and remove TVSV. Immerse threaded end of valve in container of water with thermometer.
  2. With water temperature below 106°F (41°C), check that air flows from port "J" to port "N" and from port "L" to port "M". See Fig 1.
  3. Heat water to above 131°F (55°C). Check that air flows from port "J" to port "K" and from port "L" to port "M".
    Fig 1: Thermostatic Vacuum Switching Valve Test
    G09323378Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    Starlet and Tercel models only. 

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