isuzu Workshop Repair Guides

Isuzu Workshop Service and Repair Manuals

Engine Temperature Sensor > < Radiator Cooling Fan Temperature Sensor / Switch|Description and Operation
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Radiator Cooling Fan Temperature Sensor / Switch: Testing and Inspection

1. Remove thermo switch from radiator.
2. Place temperature sensing portion of thermo switch in a container of water.
3. Connect ohmmeter onto thermo switch terminals.
4. Heat water.
5. When the temperature of the water reaches approximately 180°F-190°F, continuity should exist between thermo switch terminals.
6. Allow temperature of the water to drop to between 167°-178°F. No continuity should exist in this range.
7. If thermo switch does not operate as specified, replace thermo switch.

Engine Temperature Sensor > < Radiator Cooling Fan Temperature Sensor / Switch|Description and Operation