Corolla CE Sedan 4-Door L4-1587cc 1.6L DOHC MFI (1997)
Radiator Cooling Fan Temperature Sensor / Switch: Testing and Inspection
1. Drain engine coolant.
2. Remove Engine Coolant Temperature (ECT) switch.
3. Inspect ECT switch as follows:
(a)
Using an ohmmeter, check that there is no continuity between the terminals when the coolant temperature is above 93° C (199° F).
If there is continuity, replace the switch.
(b) Using an ohmmeter, check that there is continuity between the terminals when the coolant temperature is below 83° C (181° F).
If there is no continuity, replace the switch.
4. Reinstall ECT switch.
5. Refill with engine coolant.
6. Start engine and check for coolant leaks.
