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AIR FUEL RATIO SENSOR INSPECTION

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PROCEDURE


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    INSPECT AIR FUEL RATIO SENSOR (for Bank 1)


    1. B004SJBC05
      *A for Bank 1 Sensor 1
      *B for Bank 1 Sensor 2
      *a

      Component without harness connected

      (Air Fuel Ratio Sensor)

      Measure the resistance according to the value(s) in the table below.

      Standard Resistance (for Bank 1 Sensor 1)
      Tester Connection Condition Specified Condition
      D18-1 (HA1A) - D18-2 (+B) 20°C (68°F) 1.6 to 3.2 Ω
      D18-3 (A1A+) - D18-4 (A1A-) Always 10 kΩ or higher
      Standard Resistance (for Bank 1 Sensor 2)
      Tester Connection Condition Specified Condition
      D16-1 (HA1B) - D16-2 (+B) 20°C (68°F) 2 to 6 Ω
      D16-3 (A1B+) - D16-4 (A1B-) Always 10 kΩ or higher

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

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    INSPECT AIR FUEL RATIO SENSOR (for Bank 2)


    1. B004SJBC06
      *A for Bank 2 Sensor 1
      *B for Bank 2 Sensor 2
      *a

      Component without harness connected

      (Air Fuel Ratio Sensor)

      Measure the resistance according to the value(s) in the table below.

      Standard Resistance (for Bank 2 Sensor 1)
      Tester Connection Condition Specified Condition
      D19-1 (HA2A) - D19-2 (+B) 20°C (68°F) 1.6 to 3.2 Ω
      D19-3 (A2A+) - D19-4 (A2A-) Always 10 kΩ or higher
      Standard Resistance (for Bank 2 Sensor 2)
      Tester Connection Condition Specified Condition
      D17-1 (HA2B) - D17-2 (+B) 20°C (68°F) 2 to 6 Ω
      D17-3 (A2B+) - D17-4 (A2B-) Always 10 kΩ or higher

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