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Terminals Of Ecu

  1. CHECK POWER WINDOW REGULATOR MASTER SWITCH 
    Fig 1: Identifying P17 Switch Connector
    G02919571Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Disconnect the P17 switch connector.
    2. Measure the voltage and resistance of each terminal of the wire harness side connector.

      Standard: 

      Fig 2: Terminal Specified Condition Table
      G02919572Courtesy 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 each terminal of the connector.

      Standard: 

      Fig 3: Terminal Specified Condition Table
      G02919573Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

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

    6. Check that 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)
    G02919574Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Disconnect the 1A, 1D, 1E and 1B J/B connectors.
    2. Measure the voltage and resistance between each terminal of the wire harness side connectors and body ground.

      Standard: 

      TERMINAL SPECIFIED CONDITION

      Symbols (Terminal No.) Wiring Color Terminal Description Condition Specified Condition
      ECUB (1A-30) - Body ground R - Body ground +B (ECUB) power supply Constant 10 to 14 V
      ALTB (1B-1) - Body ground W - Body ground +B (power system, generatorsystem) power supply Constant 10 to 14 V
      KSW (1E-26) - Body ground Y - Body ground Key unlock warning switch input No key in key slot Key inserted 10 kΩ or higher Below 1 Ω
      DCTY (1D-21) - Body ground V - Body ground Driver side courtesy switch input Driver side door CLOSED --> OPEN 10 kΩ or higher Below 1 Ω
      PCTY (1D-24) - Body ground BR - Body ground Passenger side courtesy switch input Passenger side door CLOSED --> OPEN 10 kΩ or higher --> Below 1 Ω
      GND (1E-17) - Body ground W-B - Body ground Ground Constant 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 between each terminal of the connector and body ground.

      Standard: 

      TERMINAL SPECIFIED CONDITION

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

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

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