Inspection After Removal

WARNING: This page is about a different car, the 2012 Nissan Pathfinder. However, it is still accessible from the selected car via links, so may be relevant.

Check valve seating condition at room temperature. It should seat tightly.

Check valve operation.

Place a thread so that it is caught in the valve 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 falls from the thread.
Continue heating. Check the full-open lift amount.
NOTE: The full-open lift amount standard temperature is the reference value.
After checking the full-open lift amount, lower the water temperature and check the valve closing temperature.

Fig 1: Checking Valve Opening Temperature
Courtesy of NISSAN NORTH AMERICA, INC.

Thermostat	Standard
Valve opening temperature	Refer to "STANDARD AND LIMIT "
Full-open lift amount	Refer to "STANDARD AND LIMIT "
Valve closing temperature	Refer to "STANDARD AND LIMIT "

If valve seating at measured values are out of standard range, replace water inlet and thermostat assembly.