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Air Fuel Ratio Sensor: Inspection: Inspection

  1. INSPECT AIR FUEL RATIO SENSOR 
    1. Measure the resistance according to the value(s) in the table below.
      Fig 1: Identifying Air Fuel Ratio Sensor Connector Terminals
      GTY293983Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      TEXT IN ILLUSTRATION

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

      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

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

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