PRE-CRASH SAFETY SYSTEM TERMINALS OF ECU


  1. CHECK DRIVING SUPPORT ECU ASSEMBLY

    A01WVPLE02
    Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
    E138-3 (BZ) - E138-28 (GND) L - BR Pre-crash safety city buzzer Engine switch on (IG), buzzer not sounding 11 to 14 V
    E138-7 (B) - E138-28 (GND) P - BR Power source Engine switch on (IG) 11 to 14 V
    E138-8 (CA1P) - E138-28 (GND) W - BR CAN communication signal Engine switch on (IG)

    Pulse generation

    (See waveform 1)
    E138-9 (CA1N) - E138-28 (GND) P - BR CAN communication signal Engine switch on (IG)

    Pulse generation

    (See waveform 2)
    E138-10 (CA2H) - E138-28 (GND) L - BR CAN communication signal Engine switch on (IG)

    Pulse generation

    (See waveform 1)
    E138-11 (CA2L) - E138-28 (GND) B - BR CAN communication signal Engine switch on (IG)

    Pulse generation

    (See waveform 2)
    E138-28 (GND) - Body ground BR - Body ground Ground Always Below 1 Ω

    1. A01WRM0E07
      *a 1 V/DIV.
      *b 10 μsec./DIV.

      WAVEFORM 1


      1. CAN communication signal

        Item Content
        Terminal Name

        Between E138-8 (CA1P) and E138-28 (GND)

        Between E138-10 (CA2H) and E138-28 (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. A01WPV7E06
      *a 1 V/DIV.
      *b 10 μsec./DIV.

      WAVEFORM 2


      1. CAN communication signal

        Item Content
        Terminal Name

        Between E138-9 (CA1N) and E138-28 (GND)

        Between E138-11 (CA2L) and E138-28 (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


    1. Check millimeter wave radar sensor Click here.