WINDOW DEFOGGER SYSTEM TERMINALS OF ECU


  1. INSPECT HEATER CONTROL NOB NO.2 (DEFOGGER SWITCH)

    A01BBI3

    1. Measure the voltage and resistance of each terminal of the connectors.

      Symbols (Terminal No.) Wiring Color Terminal Description Condition Specified Condition
      E (1) - Body ground P - BR Ground for main power supply Always Below 1 Ω
      RrDEF (2) - E (1) L - BR Defogger signal Ignition switch ON, Defogger switch OFF → ON 10 to 14 V → Below 1 V
      IG (3) - E (1) L - BR Power supply (IG) Ignition switch ON 10 to 14 V

      If the result is not as specified, the defogger switch may have a malfunction.

  2. INSPECT INSTRUMENT PANEL JUNCTION BLOCK

    A01BCT7E01

    1. Measure the voltage and resistance of each terminal of the connectors.

      Symbols (Terminal No.) Wiring Color Terminal Description Condition Specified Condition
      DEF (5F-2) - Body ground B - Body ground Defogger signal Ignition switch ON, Defogger switch OFF → ON Below 1 V → 10 to 14 V
      +B (5G-1) - Body ground B-G - Body ground Main power supply (+B) Always 10 to 14 V
      DEFSW1 (5Q-4) - Body ground L-R - Body ground Main power supply (IG) Ignition switch ON 10 to 14 V
      DEFSW2 (5Q-12) - Body ground P-B - Body ground Defogger signal Ignition switch ON 10 to 14 V

      If the result is not as specified, the instrument panel junction block may have a malfunction.