Toyota 2GR-FE Manual page 317

Display (DTC output)
P0116 and other DTCs
A
2
INSPECT THERMOSTAT
OK
REPLACE ENGINE COOLANT TEMPERATURE SENSOR (See page ES-499)
2GR-FE ENGINE CONTROL SYSTEM – SFI SYSTEM
B
(a) Remove the thermostat (See page CO-13).
(b) Check the valve opening temperature of the thermostat.
Standard:
80 to 84°C (176 to 183°F)
HINT:
In addition to the above check, confirm that the valve is
completely closed when the temperature is below the
standard.
(c) Reinstall the thermostat (See page CO-14).
NG
Proceed to
B
GO TO DTC CHART (See page ES-63)
REPLACE THERMOSTAT (See page CO-13)
ES–161
ES