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Terminals Of Ecu

  1. CHECK POWER WINDOW REGULATOR MASTER SWITCH 
    Fig 1: Identifying Power Window Regulator Master Switch Connector Terminals
    G05114277Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Disconnect the H5 switch connector.
    2. Measure the voltage and resistance of the wire harness side connector.

      Standard: 

      VOLTAGE AND RESISTANCE SPECIFICATIONS

      Symbols (Terminal No.) Wiring Color Terminal Description Condition Specified Condition
      B (H5-9) - Body ground W - Body ground Ignition power supply Ignition switch OFF Below 1 V
      B (H5-9) - Body ground W - Body ground Ignition power supply Ignition switch ON 11 to 14 V
      E (H5-1) - Body ground W-B - Body ground Ground Always Below 1 Ω

      If the result is not as specified, there may be a malfunction on the wire harness side.

    3. Reconnect the H5 switch connector.
    4. Measure the voltage of the connector.

      Standard voltage: 

      STANDARD VOLTAGE SPECIFICATIONS

      Symbols (Terminal No.) Wiring Color Terminal Description Condition Specified Condition
      U (H5-3) - E (H5-1) L-W-B Power window motor UP output Ignition switch ON, driver side power window switch OFF → UP (manual operation) Below 1 V → 11 to 14 V
      D (H5-4) - E (H5-1) L-B - W-B Power window motor DOWN output Ignition switch ON, driver side power window switch OFF → DOWN (manual operation) Below 1 V → 11 to 14 V
      D (H5-4) - E (H5-1) L-B - W-B Power window motor DOWN output Ignition switch ON, driver side power window fully closed → driver side power window switch
      DOWN (AUTO operation) → driver side power window fully open      		 Below 1 V → 11 to 14 V → Below 1 V

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

    5. Check the AUTO light illumination.
      1. After turning the ignition switch ON, check that the AUTO light illuminates (amber).
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