nissan Workshop Repair Guides

Nissan and Datsun Workshop Service and Repair Manuals

Radiator Fan Thermal Switch <--> [Radiator Cooling Fan Temperature Sensor / Switch]|Description and Operation|Page 1457 > < Radiator Fan Thermal Switch <--> [Radiator Cooling Fan Temperature Sensor / Switch]|Description and Operation
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Fig. 1 Testing thermo switch (typical)

Testing

1.

Remove thermo switch as outlined above.

2.

Connect suitable ohmmeter across switch terminals, then immerse lower part of switch in water, Fig. 1. Ohmmeter should indicate an open circuit.

3.

Place thermometer in water and heat. When water temperature reaches approximately 194°F for thermo sensor No. 1 or 212°F for thermo sensor
No. 2, switch contacts should close and the ohmmeter should indicate continuity.

4.

If switch does not operate properly, replace it.

Radiator Fan Thermal Switch <--> [Radiator Cooling Fan Temperature Sensor / Switch]|Description and Operation|Page 1457 > < Radiator Fan Thermal Switch <--> [Radiator Cooling Fan Temperature Sensor / Switch]|Description and Operation