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Home >> Mazda >> 1995 >> B3000 Base, Standard >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - System/Component Tests >> Computerized Engine Controls >> Engine Coolant Temperature (ECT) Sensor
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Engine Coolant Temperature (ECT) Sensor

Remove engine coolant temperature sensor. Place sensor and thermometer in container of coolant. Connect ohmmeter to sensor terminals. Slowly heat coolant. Note resistance at specified temperatures. See ECT SENSOR RESISTANCE  table. Replace sensor as necessary.

ECT SENSOR RESISTANCE

Temperature Ohms
50°F (10°C) 59,175
68°F (20°C) 37,387
86°F (30°C) 24,215
104°F (40°C) 16,043
122°F (50°C) 10,850
140°F (60°C) 7,487
158°F (70°C) 5,268
176°F (80°C) 377
194°F (90°C) 275
212°F (100°C) 203
230°F (110°C) 152
240°F (120°C) 115