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Resistance Test

Unplug sensor connector. On Accord and Prelude, sensor is located at top of engine, on left side. On Civic and Civic Del Sol, sensor is located on rear side of engine, near center. Measure resistance between sensor terminals. Resistance should be as specified. See INTAKE AIR TEMPERATURE (IAT) SENSOR RESISTANCE  table. If resistance is not within specification, replace sensor.

INTAKE AIR TEMPERATURE (IAT) SENSOR RESISTANCE

Temperature - °F (°C) Resistance (Ohms)
-4 (-20) 15,000-18,000
68 (20) 1000-4000
176 (80) 200-400