LANE DEPARTURE ALERT SYSTEM(w/ Steering Control) TERMINALS OF ECU


  1. CHECK FORWARD RECOGNITION CAMERA

    Note


    • DTCs may be output 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 U15 forward recognition camera connector.

    B005ZVGE02

    1. Disconnect the U15 forward recognition camera connector.

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

      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      U15-7 (IGB) - U15-10 (GND) V - W-B Power source Power switch on (IG) 11 to 14 V
      Power switch off Below 1 V
      U15-10 (GND) - Body ground W-B - Body ground Ground Always Below 1 Ω

    3. Reconnect the U15 forward recognition camera connector.

    4. 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, a 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
      U15-5 (CA1P) - U15-10 (GND) B - W-B CAN communication signal Power switch on (IG)

      Pulse generation

      (See waveform 1)
      U15-11 (CA1N) - U15-10 (GND) W - W-B CAN communication signal Power switch on (IG)

      Pulse generation

      (See waveform 2)
      U15-6 (CANH) - U15-10 (GND) V - W-B CAN communication signal Power switch on (IG)

      Pulse generation

      (See waveform 1)
      U15-12 (CANL) - U15-10 (GND) W - W-B CAN communication signal Power switch on (IG)

      Pulse generation

      (See waveform 2)

      1. B005YT8E97
        *a 1 V/DIV.
        *b 10 μsec./DIV.

        WAVEFORM 1

        Item Content
        Terminal Name

        Between U15-5 (CA1P) and U15-10 (GND)

        Between U15-6 (CANH) and U15-10 (GND)
        Tester Range 1 V/DIV., 10 μsec./DIV.
        Condition Power switch on (IG)

        Tech Tips

        The waveform varies depending on the CAN communication signal.

      2. B005XHEE89
        *a 1 V/DIV.
        *b 10 μsec./DIV.

        WAVEFORM 2

        Item Content
        Terminal Name

        Between U15-11 (CA1N) and U15-10 (GND)

        Between U15-12 (CANL) and U15-10 (GND)
        Tester Range 1 V/DIV., 10 μsec./DIV.
        Condition Power switch on (IG)

        Tech Tips

        The waveform varies depending on the CAN communication signal.

  2. CHECK DRIVING SUPPORT ECU ASSEMBLY

    B005Y05N80

    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
      L205-7 (B) - L205-28 (GND) B - W-B Power source Power switch on (IG) 11 to 14 V
      Power switch off Below 1 V
      L205-5 (PBSW) - L205-28 (GND) L - W-B Lane departure alert main switch (integration control and panel assembly) signal

      Power switch off

      Lane departure alert main switch off

      		 1 MΩ or higher

      Power switch off

      Lane departure alert main switch on

      		 Below 1 Ω
      L205-28 (GND) - 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, a malfunction of a CAN bus line, terminating resistor, or the driving support ECU assembly is suspected.

      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      L205-8 (CA1P) - L205-28 (GND) B - W-B CAN communication signal Power switch on (IG)

      Pulse generation

      (See waveform 1)
      L205-9 (CA1N) - L205-28 (GND) W - W-B CAN communication signal Power switch on (IG)

      Pulse generation

      (See waveform 2)
      L205-10 (CA2H) - L205-28 (GND) B - W-B CAN communication signal Power switch on (IG)

      Pulse generation

      (See waveform 1)
      L205-11 (CA2L) - L205-28 (GND) R - W-B CAN communication signal Power switch on (IG)

      Pulse generation

      (See waveform 2)

      1. B005YT8E97
        *a 1 V/DIV.
        *b 10 μsec./DIV.

        WAVEFORM 1

        Item Content
        Terminal Name

        Between L205-8 (CA1P) - L205-28 (GND)

        Between L205-10 (CA2H) - L205-28 (GND)
        Tester Range 1 V/DIV., 10 μsec./DIV.
        Condition Power switch on (IG)

        Tech Tips

        The waveform varies depending on the CAN communication signal.

      2. B005XHEE89
        *a 1 V/DIV.
        *b 10 μsec./DIV.

        WAVEFORM 2

        Item Content
        Terminal Name

        Between L205-9 (CA1N) - L205-28 (GND)

        Between L205-11 (CA2L) - L205-28 (GND)
        Tester Range 1 V/DIV., 10 μsec./DIV.
        Condition Power switch on (IG)

        Tech Tips

        The waveform varies depending on the CAN communication signal.