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Coolant Temperature Sensor (ES300, SC300 & SC400)

Using a DVOM, measure resistance between coolant temperature sensor terminals. For coolant temperature sensor location, see Figure, Figure or Figure. See COOLANT TEMPERATURE SENSOR RESISTANCE  table. If coolant temperature sensor resistance is not within specification, replace sensor.

COOLANT TEMPERATURE SENSOR RESISTANCE

Temperature Ohms
176°F (80°C) 1530
194°F (90°C) 1180
203°F (95°C) 1030
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