Manuals through 2025 now available!
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LEMON is the spiritual successor to CHARM, I recommend you try it!
Link:
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Coolant Temperature Sensor / Switch HVAC: Testing and Inspection
WATER TEMPERATURE SENSORCHECKING 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.
