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Terminals Of Driving Support Ecu Assembly [12/2013 - 11/2016]

  1. CHECK DRIVING SUPPORT ECU ASSEMBLY 
    Fig 1: Driving Support ECU Assembly Connector End View F84
    GTY454912Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Disconnect the F84 driving support ECU assembly connector.
      NOTE:

      Do not apply excessive force to the connector. If a force of 10 kg or more is applied, the connector may break.

    2. Measure the resistance and voltage on the wire harness side connector according to the value(s) in the table below.
      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      F84-5 (PBSW) - Body ground B - Body ground Pre-collision system cancel switch assembly signal Pre-collision system cancel switch assembly on Below 1 Ω
      Pre-collision system cancel switch assembly off 10 kΩ or higher
      F84-25 (GND) - Body ground W-B - Body ground Ground Always Below 1 Ω
      F84-30 (B) - Body ground R - Body ground Power source Engine switch on (IG) 11 to 14 V
      Engine switch off Below 1 V

      HINT: 

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

    3. Reconnect the F84 driving support ECU assembly connector.
    4. Check for pulses according to the value(s) in the table below.
      Terminal No. (Symbols) Wiring Color Terminal Description Condition Specified Condition
      F84-17 (CA2L) - F84-25 (GND) W - W-B CAN communication signal Engine switch on (IG) Pulse generation
      (See waveform 1)
      F84-18 (CA1N) - F84-25 (GND) W - W-B CAN communication signal Engine switch on (IG) Pulse generation
      (See waveform 2)
      F84-39 (CA2H) - F84-25 (GND) G - W-B CAN communication signal Engine switch on (IG) Pulse generation
      (See waveform 3)
      F84-40 (CA1P) - F84-25 (GND) R - W-B CAN communication signal Engine switch on (IG) Pulse generation
      (See waveform 4)
    5. Waveform 1
      Fig 2: Waveform 1
      GTY340408Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      1. CAN communication signal
        Item Content
        Tester Connection F84-17 (CA2L) - F84-25 (GND)
        Tool Setting 1 V/DIV., 10 μsec./DIV.
        Condition Engine switch on (IG)

        HINT: 

        The waveform varies depending on the CAN communication signal.

    6. Waveform 2
      Fig 3: Waveform 2
      GTY340408Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      1. CAN communication signal
        Item Content
        Tester Connection F84-18 (CA1N) - F84-25 (GND)
        Tool Setting 1 V/DIV., 10 μsec./DIV.
        Condition Engine switch on (IG)

        HINT: 

        The waveform varies depending on the CAN communication signal.

    7. Waveform 3
      Fig 4: Waveform 3
      GTY340295Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      1. CAN communication signal
        Item Content
        Tester Connection F84-39 (CA2H) - F84-25 (GND)
        Tool Setting 1 V/DIV., 10 μsec./DIV.
        Condition Engine switch on (IG)

        HINT: 

        The waveform varies depending on the CAN communication signal.

    8. Waveform 4
      Fig 5: Waveform 4
      GTY340295Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      1. CAN communication signal
        Item Content
        Tester Connection F84-40 (CA1P) - F84-25 (GND)
        Tool Setting 1 V/DIV., 10 μsec./DIV.
        Condition Engine switch on (IG)

        HINT: 

        The waveform varies depending on the CAN communication signal.

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