ROAD SIGN ASSIST SYSTEM TERMINALS OF ECU

  1. CHECK FORWARD RECOGNITION CAMERA

    E256359E32

    1. Disconnect the Q17 forward recognition camera connector.

      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 Q17 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

      Q17-7 (IGB) - Body ground

      GR - Body ground

      Power source

      Power switch on (IG)

      11 to 14 V

      Power switch off

      Below 1 V

      Q17-10 (GND) - Body ground

      W-B - Body ground

      Ground

      Always

      Below 1 Ω
      Tip:

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

    3. Reconnect the Q17 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

      Q17-5 (CA1P) - Q17-10 (GND)

      G - W-B

      CAN communication signal

      Power switch on (IG)

      Pulse generation

      (See waveform 1)

      Q17-11 (CA1N) - Q17-10 (GND)

      LG - W-B

      CAN communication signal

      Power switch on (IG)

      Pulse generation

      (See waveform 2)

      Q17-6 (CANH) - Q17-10 (GND)

      L - W-B

      CAN communication signal

      Power switch on (IG)

      Pulse generation

      (See waveform 1)

      Q17-12 (CANL) - Q17-10 (GND)

      W - W-B

      CAN communication signal

      Power switch on (IG)

      Pulse generation

      (See waveform 2)

    5. WAVEFORM 1

      1. A086154E96

        CAN communication signal

        Item

        Content

        Tester Connection

        • Q17-5 (CA1P) - Q17-10 (GND)

        • Q17-6 (CANH) - Q17-10 (GND)

        Tool Setting

        1 V/DIV., 10 μsec./DIV.

        Condition

        Power switch on (IG)
        Tip:

        The waveform varies depending on the CAN communication signal.

    6. WAVEFORM 2

      1. A086155E87

        CAN communication signal

        Item

        Content

        Tester Connection

        • Q17-11 (CA1N) - Q17-10 (GND)

        • Q17-12 (CANL) - Q17-10 (GND)

        Tool Setting

        1 V/DIV., 10 μsec./DIV.

        Condition

        Power switch on (IG)
        Tip:

        The waveform varies depending on the CAN communication signal.