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


  1. FORWARD RECOGNITION CAMERA

    A01QB74E35

    1. Disconnect the W6 forward recognition camera connector.

      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 W6 forward recognition camera connector.

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

      Tech Tips

      If the result is not as specified, there may be a malfunction on the wire harness side.

      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      W6-7 (IGB) - Body ground L - Body ground Power source Engine switch on (IG) 11 to 14 V
      Engine switch off Below 1 V
      W6-10 (GND) - Body ground W-B - Body ground Ground Always Below 1 Ω

    3. Reconnect the W6 forward recognition camera connector.

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

      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      W6-5 (CA1P) - Body ground L - Body ground CAN communication signal Engine switch on (IG)

      Pulse generation

      (Waveform 1)
      W6-11 (CA1N) - Body ground LG - Body ground

      Pulse generation

      (Waveform 2)
      W6-6 (CANH) - Body ground Y - Body ground

      Pulse generation

      (Waveform 1)
      W6-12 (CANL) - Body ground W - Body ground

      Pulse generation

      (Waveform 2)

    5. WAVEFORM 1


      1. B002EDCE05
        *a 1 V/DIV.
        *b 10 μsec./DIV.

        CAN communication signal

        Item Content
        Terminal Name

        Between W6-5 (CA1P) and W6-10 (GND)

        Between W6-6 (CANH) and W6-10 (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.

    6. WAVEFORM 2


      1. A01Q9J3E09
        *a 1 V/DIV.
        *b 10 μsec./DIV.

        CAN communication signal

        Item Content
        Terminal Name

        Between W6-11 (CA1N) and W6-10 (GND)

        Between W6-12 (CANL) and W6-10 (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. DRIVING SUPPORT ECU

    A01Q952E12

    1. Disconnect the K4 driving support ECU assembly 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
      K4-23 (SPSW) - K4-28 (GND) Y - BR*1 Lane departure alert main switch signal Engine switch on (IG), lane departure alert main switch on Below 1 V
      Y - W-B*2 Engine switch on (IG), lane departure alert main switch off 11 to 14 V
      K4-7 (B) - K4-28 (GND) L - BR*1 Power source Engine switch on (IG) 11 to 14 V
      L - W-B*2
      K4-28 (GND) - Body ground BR - Body ground*1 Ground Always Below 1 Ω
      W-B - Body ground*2

      • *1: for LHD

        *2: for RHD

    3. Reconnect the K4 driving support ECU assembly connector.

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

      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      K4-8 (CA1P) - K4-28 (GND) Y - BR*1 CAN communication signal Engine switch on (IG)

      Pulse generation

      (Waveform 1)
      Y - W-B*2
      K4-9 (CA1N) - K4-28 (GND) W - BR*1

      Pulse generation

      (Waveform 2)
      W - W-B*2
      K4-10 (CA2H) - K4-28 (GND) L - BR*1

      Pulse generation

      (Waveform 1)
      V - W-B*2
      K4-11 (CA2L) - K4-28 (GND) LG - BR*1

      Pulse generation

      (Waveform 2)
      LG - W-B*2

      • *1: for LHD

        *2: for RHD

    5. WAVEFORM 1


      1. B002EDCE05
        *a 1 V/DIV.
        *b 10 μsec./DIV.

        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.

    6. WAVEFORM 2


      1. A01Q9J3E09
        *a 1 V/DIV.
        *b 10 μsec./DIV.

        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.