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Window Defogger System: Inspection

  1. CHECK STEERING PAD SWITCH 
    1. Remove the horn button (See REMOVAL ).
    2. Disconnect the connector as shown in Fig 1.
      Fig 1: Disconnecting Connector
      G04476835Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    3. Measure the resistance of the switch.

      Standard resistance 

      TERMINALS RESISTANCE SPECIFICATION

      Tester Connection Switch Condition Specified Condition
      3 (AC1) - 7 (EAC) OFF 29 to 31 kΩ
      3 (AC1) - 7 (EAC) ON 290 to 305 Ω

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

      Fig 2: Identifying Steering Pad Switch Connectors
      G04476836Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002