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Air Fuel Ratio Sensor: Inspection

WARNING: This page is about a different car, the 2008 Lexus LS 600hL. However, it is still accessible from the selected car via links, so may be relevant.
  1. INSPECT AIR FUEL RATIO SENSOR 
    1. Measure the resistance according to the value (s) in the table below.

      Standard resistance 

      STANDARD RESISTANCE

      Tester Connection Condition Specified Condition
      1 (HA1A) - 2 (+B)
      1 (HA2A) - 2 (+B)      		 20°C (68°F) 1.8 to 3.4 Ω
      Fig 1: Identifying Air Fuel Ratio Sensor Connector Terminal
      G05771272Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

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

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