Engine - Coolant Temperature Sensor/Switch: Testing and Inspection
Radiator Fan Switch TestNOTE: Bleed air from the cooling system after installing the radiator fan switch.
1. Remove radiator fan switch A from the water passage, remove radiator fan switch B from the cylinder head, and remove radiator fan switch C from the radiator.
2. Suspend each radiator fan switch (A) in a container of water (C) as shown.
3. Heat the water, and check the temperature with a thermometer (B). Do not let the thermometer touch the bottom of the hot container.
4. Measure the continuity between terminal 1 and terminal 2 according to the table.