Inspection After Removal

WARNING: This page is about a different car, the 2003 Nissan Altima. However, it is still accessible from the selected car via links, so may be relevant.

Place a thread so that it is caught in the valves of the thermostat. Immerse fully in a container filled with water. Heat while stirring.
The valve opening temperature is the temperature at which the valve opens and the falls from the thread.
Continue heating. Check the full-open lift amount.

Fig 1: Immersing Thermostat Valves Fully In Container Filled With Water
Courtesy of NISSAN MOTOR CO., U.S.A.

NOTE: The full-open lift amount standard temperature for the thermostat is the reference value.
After checking the full-open lift amount, lower the water temperature and check the valve closing temperature.

Fig 2: Thermostat Valves Specifications Table
Courtesy of NISSAN MOTOR CO., U.S.A.