PL720 2WD L4-2488cc 2.5L DSL (SD25) (1985)
Multi-Function Thermal Sensor / Switch: Testing and Inspection
1.
Remove thermo switch.
2.
Dip temperature sensor of switch in cold water.
3.
Slowly raise water temperature, ensuring that switch shows continuity below 31-35 degrees F and does not show continuity above 38-42 degrees F.