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Air Fuel Ratio Sensor Relay: Inspection

  1. INSPECT AIR FUEL RATIO SENSOR RELAY 
    1. Using an ohmmeter, measure the resistance according to the value(s) in the table below.

      Standard resistance 

      RESISTANCE REFERENCE TABLE

      Tester connection Specified Condition
      1A-3 - 1A-4 10 kΩ or higher
      1A-3 - 1A-4 Below 1 Ω (Battery voltage applied between terminals 1E-7 and 1E-10)
      Fig 1: Identifying Air Fuel Ratio Sensor Relay Terminals
      G04973401Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
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