Radiator Cooling Fan Temperature Sensor / Switch: Testing and Inspection
INSPECTION1. DRAIN ENGINE COOLANT
2. REMOVE ECT SWITCH
a Disconnect the connector.
b Remove the ECT switch.
c Remove the O-ring from the ECT switch.
3. INSPECT ECT SWITCH
a Using an ohmmeter, check that there is continuity between the terminals when the coolant temperature is above 93°C (199°F). If there is no continuity, replace the switch.
b Using an ohmmeter, check that there is no continuity between the terminals when the coolant temperature is below 83°C (181°F). If there is continuity, replace the switch.
4. REINSTALL ECT SWITCH
a Install a new O-ring to the ECT switch.
b Install the ECT switch.
Torque: 7.4 Nm (75 kgf-cm, 65 inch lbs.)
c Connect the connector.
5. REFILL WITH ENGINE COOLANT
6. START ENGINE AND CHECK FOR COOLANT LEAKS