L-Series Wagon 2WD F4-1781cc 1.8L SOHC (MPFI) (1985)
Radiator Cooling Fan Temperature Sensor / Switch: Testing and Inspection
To test, it must be removed from the radiator and placed into a container of water at the necessary temperature to close its contacts and applying an ohm
meter across its leads should read zero or near zero ohms. To test operation of fan, either turn on A/C if equipped, or disconnect lead from switch and
use a jumper across the leads attached to the main harness.