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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 

      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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