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Evaporator Case > < Coolant Temperature Sensor / Switch HVAC|Description and Operation
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Coolant Temperature Sensor / Switch HVAC: Testing and Inspection

WATER TEMPERATURE SENSOR

CHECKING THE OPERATION OF WATER TEMP. SENSOR

1. Immerse the water temp. sensor in water.
2. Using a stove, heating the water measure the resistance between terminal 1 and terminal 2.

Check the resistance value is within specification as shown in the graph.

Evaporator Case > < Coolant Temperature Sensor / Switch HVAC|Description and Operation