Radiator Fan Control Sensor Test

NOTE: Bleed air from the cooling system after installing the radiator fan control sensor.


1. Remove the radiator fan control sensor from the thermostat cover.

Radiator Fan Control Sensor Test:

2. Suspend the radiator fan control sensor in a container of coolant as shown.




3. Heat the coolant, and check coolant temperature with a thermometer (see table).
4. Measure the resistance between the A and B terminals according to the table.
5. If unable to obtain the above readings, replace the radiator fan control sensor.