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Air Fuel Ratio Sensor: Inspection: Inspection

  1. INSPECT AIR FUEL RATIO SENSOR (for Bank 1) 
    1. Measure the resistance according to the value(s) in the table below.
      Fig 1: Measure The Resistance
      GTY265690Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Standard Resistance

      Tester Connection Condition Specified Condition
      1 (HA1A) - 2 (+B) 20°C (68°F) 1.6 to 3.2 Ω
      1 (HA1A) - 4 (A1A-) - 10 kΩ or higher
      TEXT IN ILLUSTRATION

      *a Component without harness connected
      (Air Fuel Ratio Sensor)

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

  2. INSPECT AIR FUEL RATIO SENSOR NO. 2 (for Bank 2) 
    1. Measure the resistance according to the value(s) in the table below.
      Fig 2: Measure The Resistance
      GTY265688Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Standard Resistance

      Tester Connection Condition Specified Condition
      1 (HA2A) - 2 (+B) 20°C (68°F) 1.6 to 3.2 Ω
      1 (HA2A) - 4 (A2A-) - 10 kΩ or higher
      TEXT IN ILLUSTRATION

      *a Component without harness connected
      (Air Fuel Ratio Sensor)

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

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