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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.
      Fig 1: Inspecting Air Fuel Ratio Sensor Relay
      G04942983Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Standard resistance 

      TESTER CONNECTION SPECIFIED CONDITION CHART

      Tester Connection Specified Condition
      3 - 5 10 kΩ or higher
      3 - 5 Below 1 Ω (Apply battery voltage between terminals 1 and 2)

      If the result is not as specified, replace the relay.