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Terminals Of Ecu

  1. CHECK POWER WINDOW REGULATOR MASTER SWITCH 
    Fig 1: Identifying Power Window Regulator Master Switch
    G02616314Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Disconnect the P17 switch connector.
    2. Measure the voltage and resistance of the wire harness side connector.

      Standard: 

      Fig 2: Terminal Description Specified Condition Chart
      G02616315Courtesy 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 P17 switch connector.
    4. Reset the power window motor (SEE INITIALIZATION  ).
    5. Measure the voltage of the connector.

      Standard: 

      Fig 3: Terminal Description Specified Condition Chart
      G02616316Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

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

    6. Check the AUTO lamp illumination.
      1. When turning the power switch ON (IG), check that the AUTO lamp illuminates (green).
  2. CHECK INSTRUMENT PANEL J/B ASSY (MULTIPLEX NETWORK BODY ECU) 
    Fig 4: Identifying Instrument Panel J/B Assembly (Multiplex Network Body ECU)
    G02616317Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Disconnect the 1A, 1D, 1E and 1B J/B connectors.
    2. Measure the voltage and resistance of the wire harness side connectors.

      Standard: 

      TERMINAL DESCRIPTION SPECIFIED CONDITION CHART

      Symbols (Terminal No.) Wiring Color Terminal Description Condition Specified Condition
      ECUB (1A-30) - Body ground R - Body ground +B (ECUB) power supply Always 10 to 14 V
      ALTB (1B-1) - Body ground W - Body ground +B (power system, generator system) power supply Always 10 to 14 V
      KSW (1E-26) - Body ground Y - Body ground Halfway switch input No key in key slot 10 kΩ or higher
      KSW (1E-26) - Body ground Y - Body ground Halfway switch input Key inserted Below 1 Ω
      DCTY (1D-21) - Body ground V - Body ground Driver side courtesy switch input Driver side door closed 10 kΩ or higher
      DCTY (1D-21) - Body ground V - Body ground Driver side courtesy switch input Driver side door open Below 1 Ω
      PCTY (1D-24) - Body ground BR - Body ground Passenger side courtesy switch input Passenger side door closed 10 kΩ or higher
      PCTY (1D-24) - Body ground BR - Body ground Passenger side courtesy switch input Passenger side door open Below 1 Ω
      GND (1E-17) - 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 1A, 1D, 1E and 1B J/B connectors.
    4. Measure the voltage of the connector.

      Standard: 

      TERMINAL DESCRIPTION SPECIFIED CONDITION CHART

      Symbols (Terminal No.) Wiring Color Terminal Description Condition Specified Condition
      KSW (1E-26) - Body ground Y - Body ground Halfway switch input No key in key slot 10 to 14 V
      KSW (1E-26) - Body ground Y - Body ground Halfway switch input Key inserted 0 V

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

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