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Heated Oxygen Sensor: Inspection: Inspection

  1. INSPECT HEATED OXYGEN SENSOR 
    Fig 1: Identifying Heated Oxygen Sensor Connector Terminals
    GTY160899Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Check the resistance.
      1. Using an ohmmeter, measure the resistance between the terminals.

        Standard resistance

        Tester Connection Condition Specified Condition
        1 (HT1B) - 2 (+B) 20 °C (68 °F) 11 to 16 Ω
        1 (HT1B) - 4 (E2) Always 10 kΩ or higher

        If the resistance is not as specified, replace the heated oxygen sensor.