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Thermo Time Switch: Testing and Inspection

Fig. 4 Thermo-time coolant switch resistance check:

Check resistance of switch between terminals ``G,'' ``W,'' and ground, Fig. 4. At less than 86°F, resistance between ``G'' and ground should be 25-40 ohms, ``W'' and ground zero ohms, and ``G'' and ``W'' 25-40 ohms. At higher than 104°F, resistance between ``G'' and ground should be 50-80 ohms, between ``W'' and ground 100-160 ohms, and between ``G'' and ``W'' 50-80 ohms.