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Home >> Toyota >> 2013 >> FJ Cruiser 4WD, Part Time T/Case Control >> Repair and Diagnosis >> Engine Performance >> Remove, Overhaul & Install >> Engine Control System (Service Information) >> A/F Sensor Heater Relay >> On-Vehicle Inspection >> On-Vehicle Inspection
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On-Vehicle Inspection

  1. REMOVE AIR FUEL RATIO SENSOR HEATER RELAY 
    1. Remove the upper relay block cover.
      Fig 1: Identifying Air Fuel Ratio Sensor Heater Relay & Upper Relay Block Cover
      GTY186948Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Remove the air fuel ratio sensor heater relay.
      TEXT IN ILLUSTRATION

      *1 Air Fuel Ratio Sensor Heater Relay
  2. INSPECT AIR FUEL RATIO SENSOR HEATER RELAY 
    Fig 2: Identifying Relay Terminals
    GTY310090Courtesy 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
        3 - 4 Battery voltage not applied Below 1 Ω
        Battery voltage applied to terminals 1 and 2 10 kΩ or higher
        3 - 5 Battery voltage not applied 10 kΩ or higher
        Battery voltage applied to terminals 1 and 2 Below 1 Ω

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

  3. INSTALL AIR FUEL RATIO SENSOR HEATER RELAY 
    1. Install the air fuel ratio sensor heater relay.
    2. Install the upper relay block cover.
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