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Air Temperature Sensor (740 Regina)

  1. Disconnect air temperature sensor connector. Connect ohmmeter leads between air temperature sensor terminals.
  2. Ohmmeter should read as specified. See AIR TEMPERATURE SENSOR RESISTANCE table. Replace air temperature sensor if ohmmeter reading is not as specified.
AIR TEMPERATURE SENSOR RESISTANCE

Temperature °F (°C) Ohms
-4 (-20) 15,000
68 (20) 2500
212 (100) 160