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Terminals Of Ecu: Notes

  1. CHECK POWER WINDOW REGULATOR MASTER SWITCH (DRIVER SIDE) 
    Fig 1: Disconnecting P9 Switch Connector
    G04224421Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Disconnect the P9 switch connector.
    2. Measure the voltage and resistance of the wire harness side connector.
      WIRING COLOR AND TERMINAL DESCRIPTION

      Symbols (Terminal No.) Wiring Color Terminal Description Condition Specified Condition
      GND (P9-2) - Body ground W-B - Body ground Ground Always Below 1 Ω
      B (P9-10) - GND (P9-2) B - W-B +B (B) power supply Always 10 to 14 V
      IG (P9-20) - GND (P9-2) R - W-B Ignition power supply Ignition switch OFF Below 1 V
      IG (P9-20) - GND (P9-2) R - W-B Ignition power supply Ignition switch ON 10 to 14 V

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

    3. Reconnect the P9 switch connector.
    4. Reset the power window motor (see INITIALIZATION  ).
    5. Measure the voltage of the connector.
      WIRING COLOR AND TERMINAL DESCRIPTION

      Symbols (Terminal No.) Wiring Color Terminal Description Condition Specified Condition
      U (P9-1) - GND (P9-2) Y - W-B Power window motor UP output Ignition switch ON, driver side power window switch OFF Below 1 V
      U (P9-1) - GND (P9-2) Y - W-B Power window motor UP output Ignition switch ON, driver side power window switch UP (manual operation) 10 to 14 V
      U (P9-1) - GND (P9-2) Y - W-B Power window motor UP output Ignition switch ON, driver side window fully open Below 1 V
      U (P9-1) - GND (P9-2) Y - W-B Power window motor UP output Ignition switch ON, driver side power window switch UP (AUTO operation) 10 to 14 V
      U (P9-1) - GND (P9-2) Y - W-B Power window motor UP output Ignition switch ON, driver side power window fully closed Below 1 V
      D (P9-11) - GND (P9-2) P - W-B Power window motor DOWN output Ignition switch ON, driver side power window switch OFF Below 1 V
      D (P9-11) - GND (P9-2) P - W-B Power window motor DOWN output Ignition switch ON, driver side power window switch DOWN (manual operation) 10 to 14 V
      D (P9-11) - GND (P9-2) P - W-B Power window motor DOWN output Ignition switch ON, driver side power window fully closed Below 1 V
      D (P9-11) - GND (P9-2) P - W-B Power window motor DOWN output Ignition switch ON, driver side power window switch DOWN (AUTO operation) 10 to 14 V
      D (P9-11) - GND (P9-2) P - W-B Power window motor DOWN output Ignition switch ON, driver side power window fully open Below 1 V
      PCT (P9-6) - GND (P9 - 2) B - W-B Power window lock switch output Ignition switch ON, power window lock switch NORMAL 10 to 14 V
      PCT (P9-6) - GND (P9 - 2) B - W-B Power window lock switch output Ignition switch ON, power window lock switch LOCK Below 1 V
      VC (P9-19) - SGND (P9-12) W - BR Power window motor sensor power source Always 10 to 14 V
      VC (P9-19) - SGND (P9-12) W - BR Power window sensor ground Always 10 to 14 V

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

  2. CHECK POWER WINDOW REGULATOR SWITCH (PASSENGER SIDE) 
    Fig 2: Disconnecting P12 Switch Connector
    G04224422Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Disconnect the P12 switch connector.
    2. Measure the voltage and resistance of the wire harness side connector.
      WIRING COLOR AND TERMINAL DESCRIPTION

      Symbols (Terminal No.) Wiring Color Terminal Description Condition Specified Condition
      GND (P12-7) - Body ground W-B - Body ground Ground Always Below 1 Ω
      B (P12-12) - GND (P12-7) P - W-B +B (B) power supply Always 10 to 14 V

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

    3. Reconnect the P12 switch connector.
    4. Reset the power window motor (see INITIALIZATION  ).
    5. Measure the voltage of the connector.
      WIRING COLOR AND TERMINAL DESCRIPTION

      Symbols (Terminal No.) Wiring Color Terminal Description Condition Specified Condition
      U (P12-6) - GND (P12-7) Y - W-B Power window motor UP output Ignition switch ON, regulator switch OFF Below 1 V
      U (P12-6) - GND (P12-7) Y - W-B Power window motor UP output Ignition switch ON, regulator switch UP (manual operation) 10 to 14 V
      U (P12-6) - GND (P12-7) Y - W-B Power window motor UP output Ignition switch ON, passenger side power window fully open Below 1 V
      U (P12-6) - GND (P12-7) Y - W-B Power window motor UP output Ignition switch ON, regulator switch UP (AUTO operation) 10 to 14 V
      U (P12-6) - GND (P12-7) Y - W-B Power window motor UP output Ignition switch ON, passenger side power window fully closed Below 1 V
      D (P12-1) - GND (P12-7) G - W-B Power window motor DOWN output Ignition switch ON, regulator switch OFF Below 1 V
      D (P12-1) - GND (P12-7) G - W-B Power window motor DOWN output Ignition switch ON, regulator switch DOWN (manual operation) 10 to 14 V
      D (P12-1) - GND (P12-7) G - W-B Power window motor DOWN output Ignition switch ON, passenger side power window fully closed Below 1 V
      D (P12-1) - GND (P12-7) G - W-B Power window motor DOWN output Ignition switch ON, regulator switch DOWN (AUTO operation) 10 to 14 V
      D (P12-1) - GND (P12-7) G - W-B Power window motor DOWN output Ignition switch ON, passenger side power window fully open Below 1 V
      PCT (P12-11) - GND (P12-7) B - W-B Power window lock switch input Ignition switch ON, power window lock switch of master switch NORMAL 10 to 14 V
      PCT (P12-11) - GND (P12-7) B - W-B Power window lock switch input Ignition switch ON, power window lock switch of master switch LOCK Below 1 V
      VCC (P12-5) - SGND (P12-8) R - BR Power window motor sensor power source Always 10 to 14 V
      VCC (P12-5) - SGND (P12-8) R - BR Power window motor sensor ground Always 10 to 14 V

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

      HINT:

      An operation permission signal is output from terminal PCT of the master switch to the power window regulator switch. If the value is not as specified, there may be a malfunction on the wire harness side. An operation permission signal is also output through the MPX line to the power window regulator switch. Even if both signals are not output, the power windows will function normally.

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