Diesel Data: Automotive Repair

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

INSPECTION

1. DRAIN ENGINE COOLANT
2. REMOVE NO.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.

Torque: 20 Nm (200 kgf.cm, 14 ft.lbf)

7. REINSTALL NO.2 CYLINDER HEAD COVER
8. REINSTALL AIR CLEANER ASSEMBLY
9. FILL RADIATOR WITH ENGINE COOLANT