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Air Fuel Ratio Sensor: Inspection

  1. INSPECT AIR FUEL RATIO SENSOR 
    1. Disconnect the heated oxygen sensor connector.
    2. Measure the resistance according to the value(s) in the table below.

      Standard resistance 

      TESTER CONNECTIONS SPECIFIED CONDITIONS CHART

      Tester Connection Condition Specified Condition
      1 (HT) - 2 (+B) 20°C (68°F) 11 to 16 Ω

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

      Fig 1: Identifying Heated Oxygen Sensor Connector
      G04943115Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
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