Cooling Fan THERMOSWITCH

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Remove thermoswitch from vehicle. Using ohmmeter, ensure continuity is correct across thermoswitch terminals. Thermoswitch may be gradually heated in water for testing. See COOLING FAN THERMOSWITCH table.

COOLING FAN THERMOSWITCH ⁽¹⁾

Application

Continuity °F (°C)

No Continuity °F (°C)

Thermostat "A"

Above 208 (98)

Below 199 (93)

Thermostat "B"

Above 215 (102)

Below 206 (97)

⁽¹⁾	Before testing cooling fan thermoswitch, determine if vehicle has an "A" or "B" thermostat. "A" thermostat opens at 190°F (88°C). "B" thermostat opens at 197°F (92°C).