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Terminals Of Ecu

  1. CHECK POWER WINDOW REGULATOR MASTER SWITCH (DOUBLE CAB): 
    Fig 1: Identifying Power Window Regulator Master Switch Terminals
    G03087139Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Disconnect the P9 power window regulator master switch connector.
    2. Measure the voltage and resistance of each of the wire harness side connector terminals.

      Standard: 

      Fig 2: Power Window Regulator Master Switch Terminals Resistance Reference Chart
      G03087140Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

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

    3. Reconnect the power window regulator master switch connector.
    4. Measure the voltage of each of the connector terminals.

      Standard: 

      TERMINAL DESCRIPTION AND SPECIFIED CONDITION REFERENCE

      Symbols (Terminal No.) Wiring Color Terminal Description Condition Specified Condition
      DU (P9-4) - E (P9-1) L - W-B Power window motor UP output Ignition switch ON, driver side power window switch OFF 0 V
      DU (P9-4) - E (P9-1) L - W-B Power window motor UP output Ignition switch ON, driver side power window switch UP 10 to 14 V
      DD (P9-9) - E (P9-1) L-B - W-B Power window motor DOWN output Ignition switch ON, driver side power window switch OFF 0 V
      DD (P9-9) - E (P9-1) L-B - W-B Power window motor DOWN output Ignition switch ON, driver side power window switch DOWN (manual operation) 10 to 14 V
      DD (P9-9) - E (P9-1) 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 0 V --> 10 to 14 V --> 0 V

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

    5. Check the illumination.
      1. When the ignition switch is turned to ON from OFF with the connector connected, check that the illumination (YELLOW) AUTO lights up.
  2. CHECK POWER WINDOW REGULATOR MASTER SWITCH (ACCESS CAB): 
    Fig 3: Identifying Power Window Regulator Master Switch Terminals
    G03087141Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Disconnect the P9 power window regulator master switch connector.
    2. Measure the voltage and resistance of each of the wire harness side connector terminals.

      Standard: 

      Fig 4: Power Window Regulator Master Switch Terminals Reference Chart
      G03087142Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

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

    3. Reconnect the power window regulator master switch connector.
    4. Measure the voltage of each of the connector terminals.

      Standard: 

      TERMINAL DESCRIPTION AND SPECIFIED CONDITION REFERENCE

      Symbols (Terminal No.) Wiring Color Terminal Description Condition Specified Condition
      DU (P9-3) - E (P9-1) L - W-B Power window motor UP output Ignition switch ON, driver side power window switch OFF 0 V
      DU (P9-3) - E (P9-1) L - W-B Power window motor UP output Ignition switch ON, driver side power window switch UP 10 to 14 V
      DD (P9-4) - E (P9-1) L-B - W-B Power window motor DOWN output Ignition switch ON, driver side power window switch OFF 0 V
      DD (P9-4) - E (P9-1) L-B - W-B Power window motor DOWN output Ignition switch ON, driver side power window switch DOWN (manual operation) 10 to 14 V
      DD (P9-4) - E (P9-1) 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 0 V --> 10 to 14 V --> 0 V

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

    5. Check the illumination.
      1. When the ignition switch is turned to ON from OFF with the connector connected, check that the illumination (YELLOW) AUTO lights up.
  3. CHECK DRIVER SIDE J/B ASSY (MULTIPLEX NETWORK BODY ECU) 
    Fig 5: Identifying Multiplex Network Body ECU Terminals
    G03087143Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Disconnect the 1A,1C,1F,1H,1I and 1K driver side J/B connectors.
    2. Measure the voltage and resistance between each terminal of the wire harness side connectors and body ground.

      Standard: 

      TERMINAL DESCRIPTION AND SPECIFIED CONDITION REFERENCE

      Symbols (Terminal No.) Wiring Color Terminal Description Condition Specified Condition
      ECUB (1C-16) - Body ground R - Body ground +B (ECUB) power supply Constant 10 to 14 V
      ALTB (1A-6) - Body ground L - Body ground +B (power system, generator system) power supply Constant 10 to 14 V
      PWS (1H-10) - Body ground W-B - Body ground PWR Relay ON signal Ignition switch OFF 0 V
      PWS (1H-10) - Body ground W-B - Body ground PWR Relay ON signal Ignition switch ON 10 to 14 V
      KSW (1K-10) - Body ground G-B - Body ground Key unlock warning switch input No key in ignition key cylinder 10 k or higher
      KSW (1K-10) - Body ground G-B - Body ground Key unlock warning switch input key inserted ignition key cylinder Below 1
      DCTY (1F-7) - Body ground G-Y - Body ground Driver side courtesy switch input Driver side door CLOSED 10 k or higher
      DCTY (1F-7) - Body ground G-Y - Body ground Driver side courtesy switch input Driver side door OPEN Below 1
      PCTY (1I-8) - Body ground R-B - Body ground Passenger side courtesy switch input Passenger side door CLOSED 10 k or higher
      PCTY (1I-8) - Body ground R-B - Body ground Passenger side courtesy switch input Passenger side door OPEN Below 1
      GND (1H-18) - Body ground W-B - Body ground Ground Constant Below 1

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

    3. Reconnect the driver side J/B connectors.
    4. Measure the voltage between each terminal of the connector and body ground.

      Standard: 

    TERMINAL DESCRIPTION AND SPECIFIED CONDITION REFERENCE

    Symbols (Terminal No.) Wiring Color Terminal Description Condition Specified Condition
    KSW (1K-10) - Body ground G-B - Body ground Key unlock warning switch input No key in ignition key cylinder 10 to 14 V
    KSW (1K-10) - Body ground G-B - Body ground Key unlock warning switch input key inserted ignition key cylinder 0 V

    If the result is not as specified, the driver side J/B assy (multiplex network body ECU) may have a malfunction.

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