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 O7 forward recognition camera connector.

    A003PGSE48

    1. Disconnect the O7 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
      O7-7 (IGB) - O7-10 (GND) LG - W-B Power source Power switch on (IG) 11 to 14 V
      Power switch off Below 1 V
      O7-10 (GND) - Body ground W-B - Body ground Ground Always Below 1 Ω

    3. Reconnect the O7 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
      O7-5 (CA1P) - O7-10 (GND) GR - W-B CAN communication signal Power switch on (IG)

      Pulse generation

      (See waveform 1)
      O7-11 (CA1N) - O7-10 (GND) W - W-B CAN communication signal Power switch on (IG)

      Pulse generation

      (See waveform 2)
      O7-6 (CANH) - O7-10 (GND) G - W-B CAN communication signal Power switch on (IG)

      Pulse generation

      (See waveform 1)
      O7-12 (CANL) - O7-10 (GND) W - W-B CAN communication signal Power switch on (IG)

      Pulse generation

      (See waveform 2)

      1. A003PJLE97
        *a 1 V/DIV.
        *b 10 μsec./DIV.

        WAVEFORM 1

        Item Content
        Terminal Name

        Between O7-5 (CA1P) and O7-10 (GND)

        Between O7-6 (CANH) and O7-10 (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. A003PJ4E89
        *a 1 V/DIV.
        *b 10 μsec./DIV.

        WAVEFORM 2

        Item Content
        Terminal Name

        Between O7-11 (CA1N) and O7-10 (GND)

        Between O7-12 (CANL) and O7-10 (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

    A003PH9E26

    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
      F40-7 (B) - F40-28 (GND)

      P - W-B *1

      B - W-B *2

      		 Power source Power switch on (IG) 11 to 14 V
      Power switch off Below 1 V
      F40-23 (SPSW) - F40-28 (GND) GR - W-B

      Steering pad switch signal

      (Lane departure alert main switch signal)

      Power switch off

      Lane departure alert main switch off

      		 1 MΩ or higher

      Power switch off

      Lane departure alert main switch on

      		 228 to 252 Ω
      F40-28 (GND) - Body ground W-B - Body ground Ground Always Below 1 Ω

      *1: for LHD

      *2: for RHD

    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
      F40-8 (CA1P) - F40-28 (GND) LG - W-B CAN communication signal Power switch on (IG)

      Pulse generation

      (See waveform 1)
      F40-9 (CA1N) - F40-28 (GND) W - W-B CAN communication signal Power switch on (IG)

      Pulse generation

      (See waveform 2)
      F40-10 (CA2H) - F40-28 (GND) G - W-B CAN communication signal Power switch on (IG)

      Pulse generation

      (See waveform 1)
      F40-11 (CA2L) - F40-28 (GND) W - W-B CAN communication signal Power switch on (IG)

      Pulse generation

      (See waveform 2)

      1. A003PJLE97
        *a 1 V/DIV.
        *b 10 μsec./DIV.

        WAVEFORM 1

        Item Content
        Terminal Name

        Between F40-8 (CA1P) - F40-28 (GND)

        Between F40-10 (CA2H) - F40-28 (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. A003PJ4E89
        *a 1 V/DIV.
        *b 10 μsec./DIV.

        WAVEFORM 2

        Item Content
        Terminal Name

        Between F40-9 (CA1N) - F40-28 (GND)

        Between F40-11 (CA2L) - F40-28 (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.