PRE-COLLISION SYSTEM TERMINALS OF ECU


  1. CHECK MILLIMETER WAVE RADAR SENSOR ASSEMBLY

    B0071NTE01

    1. Measure the voltage and resistance according to the value(s) in the table below.

      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      A30-8 (IGB) - A30-1 (SGND) R - W-B Power source Engine switch on (IG) 11 to 14 V
      A30-1 (SGND) - Body ground W-B - Body ground Ground Always Below 1 Ω

    2. Check for pulses according to the value(s) in the table below.

      Tech Tips

      If the waveform is not similar to that shown in the illustration, malfunction of a CAN bus line, terminating resistor or the millimeter wave radar sensor assembly is suspected.

      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      A30-3 (CA2H) - A30-1 (SGND) R - W-B CAN communication signal Engine switch on (IG)

      Pulse generation

      (See waveform 1)
      A30-2 (CA2L) - A30-1 (SGND) W - W-B CAN communication signal Engine switch on (IG)

      Pulse generation

      (See waveform 2)
      A30-5 (CA1P) - A30-1 (SGND) G - W-B CAN communication signal Engine switch on (IG)

      Pulse generation

      (See waveform 1)
      A30-6 (CA1N) - A30-1 (SGND) W - W-B CAN communication signal Engine switch on (IG)

      Pulse generation

      (See waveform 2)

      1. B0089HHE97
        *a 1 V/DIV.
        *b 10 μsec./DIV.

        Waveform 1

        Item Content
        Terminal Name

        Between A30-3 (CA2H) and A30-1 (SGND)

        Between A30-5 (CA1P) and A30-1 (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. B0087P8E89
        *a 1 V/DIV.
        *b 10 μsec./DIV.

        Waveform 2

        Item Content
        Terminal Name

        Between A30-2 (CA2L) and A30-1 (SGND)

        Between A30-6 (CA1N) and A30-1 (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. CHECK FORWARD RECOGNITION CAMERA

    Note


    • DTCs may be stored when connectors are disconnected during inspection. Therefore, be sure to clear the DTCs using the GTS once the inspection has been completed.

    • Do not apply excessive force to the V6 forward recognition camera connector.

    B006X18E01

    1. Measure the voltage and resistance according to the value(s) in the table below.

      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      V6-7 (IGB) - V6-10 (GND) LA-P - LA Power source Engine switch on (IG) 11 to 14 V
      Engine switch off Below 1 V
      V6-10 (GND) - Body ground LA - Body ground Ground Always Below 1 Ω

    2. Check for pulses according to the value(s) in the table below.

      Tech Tips

      If the waveform is not similar to that shown in the illustration, malfunction of a CAN bus line, terminating resistor or the forward recognition camera is suspected.

      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      V6-5 (CA1P) - V6-10 (GND) L - LA CAN communication signal Engine switch on (IG)

      Pulse generation

      (See waveform 1)
      V6-11 (CA1N) - V6-10 (GND) W - LA CAN communication signal Engine switch on (IG)

      Pulse generation

      (See waveform 2)
      V6-6 (CANH) - V6-10 (GND) G - LA CAN communication signal Engine switch on (IG)

      Pulse generation

      (See waveform 1)
      V6-12 (CANL) - V6-10 (GND) W - LA CAN communication signal Engine switch on (IG)

      Pulse generation

      (See waveform 2)

      1. B0089HHE97
        *a 1 V/DIV.
        *b 10 μsec./DIV.

        Waveform 1

        Item Content
        Terminal Name

        Between V6-5 (CA1P) and V6-10 (GND)

        Between V6-6 (CANH) and V6-10 (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. B0087P8E89
        *a 1 V/DIV.
        *b 10 μsec./DIV.

        Waveform 2

        Item Content
        Terminal Name

        Between V6-11 (CA1N) and V6-10 (GND)

        Between V6-12 (CANL) and V6-10 (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.