Toyota 2GR-FE Manual page 312

ES–156
A
3
CHECK ENGINE COOLANT TEMPERATURE SENSOR (CHECK FOR OPEN IN SENSOR)
C4
ECT Sensor
ES
Wire Harness Side:
C4
NG
2GR-FE ENGINE CONTROL SYSTEM – SFI SYSTEM
ECM
THW
ETHW
ECT Sensor
A107691E25
C
CHECK FOR INTERMITTENT PROBLEMS
(a) Confirm good connection of the sensor.
(b) Disconnect the C4 engine coolant temperature (ECT)
sensor connector.
(c) Connect terminals 1 and 2 of the ECT sensor connector
on the wire harness side.
(d) Connect the intelligent tester to the DLC3.
(e) Turn the ignition switch on (IG).
(f) Turn the tester on.
(g) Enter the following menus: DIAGNOSIS / ENHANCED
OBD II / DATA LIST / PRIMARY / COOLANT TEMP.
(h) Read the value displayed on the tester.
Standard:
140°C (284°F) or higher.
(i) Reconnect the ECT sensor connector.
OK
REPLACE ENGINE COOLANT
TEMPERATURE SENSOR (See page ES-499)