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Air Fuel Ratio Sensor: Inspection

  1. INSPECT AIR FUEL RATIO SENSOR 
    1. Measure the resistance according to the value(s) in the table below.

      Standard Resistance 

      TESTER CONNECTION SPECIFIED CONDITION CHART

      Tester Connection Condition Specified Condition
      HT - +B 20°C (68°F) 1.8 to 3.4 Ω
      HT - AF- - 10 kΩ or higher

      If the result is not as specified, replace the air fuel ratio sensor.

      Fig 1: Inspecting Air Fuel Ratio Sensor
      G06040856Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
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