Celica L4-1.8L (1ZZ-FE) (2004)
Coolant Temperature Sensor/Switch (For Computer): Testing and Inspection
INSPECTION
1. DRAIN ENGINE COOLANT
2. REMOVE N0.2 CYLINDER HEAD COVER
3. REMOVE ECT SENSOR
4. INSPECT ECT SENSOR RESISTANCE
Using an ohmmeter, measure the resistance between terminals 1 (E2) and 2(THW).
Resistance: Refer to the graph
If the resistance is not as specified, replace the ECT sensor.
5. REINSTALL ECT SENSOR
Install a new gasket to the ECT sensor.
6. REINSTALL N0.2 CYLINDER HEAD COVER
7. FILL RADIATOR WITH ENGINE COOLANT