Sienna V6-3.0L (1MZ-FE) (2003)
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4. DISCONNECT ENGINE WIRE PROTECTOR FROM WATER INLET AND RH CYLINDER HEAD
Remove the 2 nuts, and disconnect the engine wire protector from the water inlet and cylinder head.
5. DISCONNECT WATER INLET PIPE FROM WATER INLET AND LH CYLINDER HEAD
a. Remove the bolt, and disconnect the inlet pipe from the water inlet.
b. Remove the O-ring from the inlet pipe.
6. REMOVE WATER INLET AND THERMOSTAT
a. Remove the 3 nuts, water inlet and thermostat.
b. Remove the gasket from the thermostat.
INSPECTION
INSPECT THERMOSTAT
HINT: The thermostat is numbered with the valve opening temperature.