PRE-CRASH SAFETY SYSTEM TERMINALS OF ECU


  1. CHECK DRIVING SUPPORT ECU ASSEMBLY

    B002DOCN09
    Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
    K4-3 (BZ) - K4-28 (GND)

    P - BR*1

    P - W-B*2

    		 Skid control buzzer output Engine switch on (IG), buzzer not sounding 11 to 14 V
    K4-7 (B) - K4-28 (GND)

    L - BR*1

    L - W-B*2

    		 Power source Engine switch on (IG) 11 to 14 V
    K4-8 (CA1P) - K4-28 (GND)

    Y - BR*1

    Y - W-B*2

    		 CAN communication signal Engine switch on (IG)

    Pulse generation

    (See waveform 1)
    K4-9 (CA1N) - K4-28 (GND)

    W - BR*1

    W - W-B*2

    		 CAN communication signal Engine switch on (IG)

    Pulse generation

    (See waveform 2)
    K4-10 (CA2H) - K4-28 (GND)

    L - BR*1

    V - W-B*2

    		 CAN communication signal Engine switch on (IG)

    Pulse generation

    (See waveform 1)
    K4-11 (CA2L) - K4-28 (GND)

    LG - BR*1

    LG - W-B*2

    		 CAN communication signal Engine switch on (IG)

    Pulse generation

    (See waveform 2)
    K4-28 (GND) - Body ground

    BR - Body ground*1

    W-B - Body ground*2

    		 Ground Always Below 1 Ω

    • *1: for LHD

    • *2: for RHD


    1. A01Q9CCE01

      WAVEFORM 1


      1. CAN communication signal

        Item Content
        Terminal Name

        Between K4-8 (CA1P) and K4-28 (GND)

        Between K4-10 (CA2H) and K4-28 (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. A01QC3EE01

      WAVEFORM 2


      1. CAN communication signal

        Item Content
        Terminal Name

        Between K4-9 (CA1N) and K4-28 (GND)

        Between K4-11 (CA2L) and K4-28 (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

    A01Q9DEE07
    Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
    B5-1 (SGND) - Body ground BR - Body ground Ground Always Below 1 Ω
    B5-2 (CA2L) - B5-1 (SGND) L - BR CAN communication signal Engine switch on (IG)

    Pulse generation

    (See waveform 2)
    B5-3 (CA2H) - B5-1 (SGND) B - BR CAN communication signal Engine switch on (IG)

    Pulse generation

    (See waveform 1)
    B5-5 (CA1P) - B5-1 (SGND) Y - BR CAN communication signal Engine switch on (IG)

    Pulse generation

    (See waveform 1)
    B5-6 (CA1N) - B5-1 (SGND) W - BR CAN communication signal Engine switch on (IG)

    Pulse generation

    (See waveform 2)
    B5-8 (IGB) - B5-1 (SGND) W - BR Power source Engine switch on (IG) 11 to 14 V

    1. A01Q9CCE01

      WAVEFORM 1


      1. CAN communication signal

        Item Content
        Terminal Name

        Between B5-3 (CA2H) and B5-1 (SGND)

        Between B5-5 (CA1P) and B5-1 (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. A01QC3EE01

      WAVEFORM 2


      1. CAN communication signal

        Item Content
        Terminal Name

        Between B5-2 (CA2L) and B5-1 (SGND)

        Between B5-6 (CA1N) and B5-1 (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.