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On-Vehicle Inspection

  1. CHECK DEFOGGER (DEF) RELAY 
    1. Remove the instrument panel lower (See REMOVAL ).
    2. Measure the voltage.

      Standard voltage 

      TERMINALS VOLTAGE SPECIFICATION

      Terminal Connection Condition Specified Condition
      1J-2 - Body ground Power switch ON (IG) Defogger switch ON 10 to 14 V
      1J-2 - Body ground Power switch ON (IG) Defogger switch OFF 0 V

      If the result is not as specified, the driver side junction block may have a malfunction.

      Fig 1: Identifying Driver Side Junction Block Connector
      G04476837Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
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