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Home >> Toyota >> 2003 >> Echo L4-1.5L (1NZ-FE) >> Repair and Diagnosis >> Powertrain Management >> Computers and Control Systems >> Coolant Temperature Sensor/Switch (For Computer) >> Testing and Inspection
July 1: So it begins. Don't worry, this is not in the correct legal jurisdiction!

Coolant Temperature Sensor/Switch (For Computer): Testing and Inspection

INSPECTION

1. DRAIN ENGINE COOLANT
2. REMOVE N0.2 CYLINDER HEAD COVER
3. REMOVE AIR CLEANER ASSEMBLY
4. REMOVE ECT SENSOR

5. 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.

6. REINSTALL ECT SENSOR
Install a new gasket to the ECT sensor.

7. REINSTALL N0.2 CYLINDER HEAD COVER
8. REINSTALL AIR CLEANER ASSEMBLY
9. FILL RADIATOR WITH ENGINE COOLANT