BVSV 1
- Drain coolant from radiator into container. Remove BVSV 1 and immerse in coolant. Using ice, lower coolant temperature to below 14°F (-10°C). Check that air flows from pipe "J" to pipe "L". See Fig 1.
- Heat coolant to above 39°F (4°C). Check that air flows from pipe "J" to pipe "K".
Supra models only.