nissan Workshop Repair Guides

Nissan and Datsun Workshop Service and Repair Manuals

Engine - Coolant Temperature Sensor/Switch > < Radiator Fan Thermal Switch <--> [Radiator Cooling Fan Temperature Sensor / Switch]|Locations|Page 1817
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Radiator Fan Thermal Switch: Testing and Inspection

Fig. 28  Testing Thermo Switch

1.

Remove thermo switch/sensor, refer to COMPONENT R&R PROCEDURES/THERMO SWITCH/SENSOR.

2.

Connect suitable ohmmeter across switch terminals, then immerse lower part of switch in water, Fig. 28. Ohmmeter should indicate an open
circuit.

3.

Place thermometer in water and heat. When water temperature reaches approximately 205°F, switch contacts should close and the ohmmeter
should indicate continuity.

4.

If switch does not operate properly, replace it.

Engine - Coolant Temperature Sensor/Switch > < Radiator Fan Thermal Switch <--> [Radiator Cooling Fan Temperature Sensor / Switch]|Locations|Page 1817