ROAD SIGN ASSIST SYSTEM TERMINALS OF ECU


  1. CHECK FORWARD RECOGNITION CAMERA

    A01QOV7E32

    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 Ignition switch ON 11 to 14 V
      Ignition switch off Below 1 V
      Q17-10 (GND) - Body ground W-B - Body ground Ground Always Below 1 Ω

      Tech Tips

      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 Ignition switch ON

      Pulse generation

      (See waveform 1)
      Q17-11 (CA1N) - Q17-10 (GND) LG - W-B CAN communication signal Ignition switch ON

      Pulse generation

      (See waveform 2)
      Q17-6 (CANH) - Q17-10 (GND) L - W-B CAN communication signal Ignition switch ON

      Pulse generation

      (See waveform 1)
      Q17-12 (CANL) - Q17-10 (GND) W - W-B CAN communication signal Ignition switch ON

      Pulse generation

      (See waveform 2)

    5. WAVEFORM 1


      1. A01QTFBE96
        *a 1 V/DIV.
        *b 10 μsec./DIV.

        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 Ignition switch ON

        Tech Tips

        The waveform varies depending on the CAN communication signal.

    6. WAVEFORM 2


      1. A01QS56E87
        *a 1 V/DIV.
        *b 10 μsec./DIV.

        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 Ignition switch ON

        Tech Tips

        The waveform varies depending on the CAN communication signal.