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Air Fuel Ratio Sensor: Inspection

  1. INSPECT AIR FUEL RATIO SENSOR 
    1. Measure the resistance between terminals 1 (HT) and 2 (+B).

      Resistance 

      AIR FUEL RATIO SENSOR

      Condition Specified Condition
      20 °C (68°F) 1.8 to 3.4 Ω

      If the result is not as specified, replace the sensor.

Fig 1: Measuring Resistance Between Terminals 1 (HT) And 2 (+B)
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