PRE-CRASH SAFETY SYSTEM TERMINALS OF ECU


  1. CHECK DRIVING SUPPORT ECU ASSEMBLY

    B001OB8E02
    Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
    H194-3 (BZ) - H194-28 (GND) P - W-B Skid control buzzer assembly output Engine switch on (IG), buzzer not sounding 11 to 14 V
    H194-7 (B) - H194-28 (GND) Y - W-B Power source Engine switch on (IG) 11 to 14 V
    H194-8 (CA1P) - H194-28 (GND) P - W-B CAN communication signal Engine switch on (IG)

    Pulse generation

    (See waveform 1)
    H194-9 (CA1N) - H194-28 (GND) GR - W-B CAN communication signal Engine switch on (IG)

    Pulse generation

    (See waveform 2)
    H194-10 (CA2H) - H194-28 (GND) B - W-B CAN communication signal Engine switch on (IG)

    Pulse generation

    (See waveform 1)
    H194-11 (CA2L) - H194-28 (GND) LG - W-B CAN communication signal Engine switch on (IG)

    Pulse generation

    (See waveform 2)
    H194-28 (GND) - Body ground W-B - Body ground Ground Always Below 1 Ω

    1. B001NVGE01
      *a 1 V/DIV.
      *b 10 μsec./DIV.

      WAVEFORM 1


      1. CAN communication signal

        Item Content
        Terminal Name

        Between H194-8 (CA1P) and H194-28 (GND)

        Between H194-10 (CA2H) and H194-28 (GND)
        Tester Range 1 V/DIV., 10 μsec./DIV.
        Condition Engine switch on (IG)

        Tech Tips

        The waveform varies depending on the CAN communication signal.

    2. B001NMCE01
      *a 1 V/DIV.
      *b 10 μsec./DIV.

      WAVEFORM 2


      1. CAN communication signal

        Item Content
        Terminal Name

        Between H194-9 (CA1N) and H194-28 (GND)

        Between H194-11 (CA2L) and H194-28 (GND)
        Tester Range 1 V/DIV., 10 μsec./DIV.
        Condition Engine switch on (IG)

        Tech Tips

        The waveform varies depending on the CAN communication signal.

  2. CHECK MILLIMETER WAVE RADAR SENSOR

    B001O7SE02
    Terminal No. (Symbols) Wiring Color Terminal Description Condition Specified Condition
    A74-1 (SGND) - Body ground BR - Body ground Ground Always Below 1 Ω
    A74-2 (CA2L) - A74-1 (SGND) P - BR CAN communication signal Engine switch on (IG)

    Pulse generation

    (see waveform 2)
    A74-3 (CA2H) - A74-1 (SGND) W - BR CAN communication signal Engine switch on (IG)

    Pulse generation

    (see waveform 1)
    A74-5 (CA1P) - A74-1 (SGND) B - BR CAN communication signal Engine switch on (IG)

    Pulse generation

    (see waveform 1)
    A74-6 (CA1N) - A74-1 (SGND) W - BR CAN communication signal Engine switch on (IG)

    Pulse generation

    (see waveform 2)
    A74-8 (IGB) - A74-1 (SGND) R - BR Power source Engine switch on (IG) 11 to 14 V

    1. B001NVGE01
      *a 1 V/DIV.
      *b 10 μsec./DIV.

      WAVEFORM 1


      1. CAN communication signal

        Item Content
        Terminal Name

        Between A74-3 (CA2H) and A74-1 (SGND)

        Between A74-5 (CA1P) and A74-1 (SGND)
        Tester Range 1 V/DIV., 10 μsec./DIV.
        Condition Engine switch on (IG)

        Tech Tips

        The waveform varies depending on the CAN communication signal.

    2. B001NMCE01
      *a 1 V/DIV.
      *b 10 μsec./DIV.

      WAVEFORM 2


      1. CAN communication signal

        Item Content
        Terminal Name

        Between A74-2 (CA2L) and A74-1 (SGND)

        Between A74-6 (CA1N) and A74-1 (SGND)
        Tester Range 1 V/DIV., 10 μsec./DIV.
        Condition Engine switch on (IG)

        Tech Tips

        The waveform varies depending on the CAN communication signal.