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On-Vehicle Inspection

  1. INSPECT DEFOGGER RELAY (Marking: DEFOG) 
    1. Measure the resistance of the DEFOG relay.
      Fig 1: Identifying Defogger Relay Connector Terminals
      G04952245Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Standard 

      TERMINAL SPECIFIED CONDITION

      Tester Condition Specified Condition
      3-4 Below 1 Ω
      (when battery voltage Is not applied between terminals)
      3-5 10 kΩ or higher
      (when battery voltage is not applied between terminals)
      3-5 Below 1 Ω
      (when battery voltage is applied to terminals 1 and 2)

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