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Air Fuel Ratio Sensor: Inspection: Inspection

  1. INSPECT AIR FUEL RATIO SENSOR (for Bank 1 Sensor 1) 
    1. Measure the resistance according to the value(s) in the table below.
      Fig 1: Identifying Air Fuel Ratio Sensor Connector
      GTY194993Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Standard Resistance

      Tester Connection Condition Specified Condition
      1 (HA1A) - 2 (+B) 20°C (68°F) 1.8 to 3.4 Ω

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

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