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Air Temperature Sensor

  1. Disconnect electrical connector from sensor. Measure resistance of sensor by connecting positive lead of ohmmeter to terminal 4 and negative lead to terminal 1.
  2. Resistance should be 2200 ohms at 77°F (25°C). If not, replace sensor and repeat ECI check.
Fig 1: Measuring Air Temperature Sensor Resistance Make sure leads are properly connected.
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