Prius L4-1.5L (1NZ-FXE) (Hybrid) (2003)
Coolant Temperature Sensor/Switch (For Computer): Testing and Inspection
INSPECTION
1. DRAIN ENGINE COOLANT
2. REMOVE CONVERTER AND INVERTER ASSEMBLY
3. REMOVE ECT SENSOR
a. Disconnect the ECT sensor connector.
b. Remove the ECT sensor and gasket.
4. INSPECT ECT SENSOR
Using an ohmmeter, measure the resistance between the terminals.
Resistance: Refer to the graph
If the resistance is not as specified, replace the ECT sensor.
5. REINSTALL ECT SENSOR
a. Install a new gasket and the ECT sensor.
Torque: 19.6 N.m (200 kgf.cm, 14 ft.lbf)
b. Connect the ECT sensor connector.
6. REINSTALL CONVERTER AND INVERTER ASSEMBLY
7. FILL RADIATOR WITH ENGINE COOLANT