FORWARD RECOGNITION CAMERA SYSTEM 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 S18 forward recognition camera connector.

    A002ANGE71

    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
      S18-7 (IGB) - S18-10 (GND) R - W-B Power source Engine switch on (IG) 11 to 14 V
      Engine switch off Below 1 V
      S18-1 (HTR) - S18-10 (GND) BR - W-B Forward recognition with heater hood sub-assembly operation signal

      Engine switch on (IG)

      Forward recognition with heater hood sub-assembly not operating

      		 11 to 14 V

      Engine switch on (IG)

      Forward recognition with heater hood sub-assembly operating

      		 Below 1 V
      S18-10 (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 forward recognition camera is suspected.

      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      S18-5 (CA1P) - S18-10 (GND) R - W-B CAN communication signal Engine switch on (IG)

      Pulse generation

      (See waveform 1)
      S18-11 (CA1N) - S18-10 (GND) W - W-B CAN communication signal Engine switch on (IG)

      Pulse generation

      (See waveform 2)
      S18-6 (CANH) - S18-10 (GND) B - W-B CAN communication signal Engine switch on (IG)

      Pulse generation

      (See waveform 1)
      S18-12 (CANL) - S18-10 (GND) W - W-B CAN communication signal Engine switch on (IG)

      Pulse generation

      (See waveform 2)

      1. A0027UEE97
        *a 1 V/DIV.
        *b 10 μsec./DIV.

        WAVEFORM 1

        Item Content
        Terminal Name

        Between S18-5 (CA1P) and S18-10 (GND)

        Between S18-6 (CANH) and S18-10 (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. A00290YE89
        *a 1 V/DIV.
        *b 10 μsec./DIV.

        WAVEFORM 2

        Item Content
        Terminal Name

        Between S18-11 (CA1N) and S18-10 (GND)

        Between S18-12 (CANL) and S18-10 (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.