FORWARD RECOGNITION CAMERA SYSTEM TERMINALS OF ECU


  1. CHECK FORWARD RECOGNITION CAMERA

    B005NTBE34

    1. Disconnect the U14 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 U14 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
      U14-7 (IGB) - Body ground SB - Body ground Power source Engine switch on (IG)

      11 to 14 V*1

      10.5 to 16 V*2
      Engine switch off Below 1 V
      U14-10 (GND) - Body ground BR - Body ground Ground Always Below 1 Ω

      *1: w/o Stop and Start System

      *2: w/ Stop and Start System

    3. Reconnect the U14 forward recognition camera connector.

    4. w/ Forward recognition with heater hood sub-assembly:

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

      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      U14-1 (HTR) - Body ground B - Body ground 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*1

      10.5 to 16 V*2

      Engine switch on (IG)

      Forward recognition with heater hood sub-assembly operating

      		 Below 1 V

      *1: w/o Stop and Start System

      *2: w/ Stop and Start System

    5. Measure the waveform according to the value(s) in the table below.

      Terminal No. (Symbol) Terminal Description Condition Specified Condition
      U14-2 (STRV) - U14-10 (GND) LIN communication signal Engine switch on (IG) Pulse generation

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

      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      U14-5 (CA1P) - U14-10 (GND) V - BR CAN communication signal Engine switch on (IG)

      Pulse generation

      (See waveform 1)
      U14-11 (CA1N) - U14-10 (GND) P - BR CAN communication signal Engine switch on (IG)

      Pulse generation

      (See waveform 2)
      U14-6 (CANH) - U14-10 (GND) B - BR CAN communication signal Engine switch on (IG)

      Pulse generation

      (See waveform 1)
      U14-12 (CANL) - U14-10 (GND) W - BR CAN communication signal Engine switch on (IG)

      Pulse generation

      (See waveform 2)

    7. WAVEFORM 1


      1. B005Q93E97
        *a 1 V/DIV.
        *b 10 μsec./DIV.

        CAN communication signal

        Item Content
        Terminal Name

        Between U14-5 (CA1P) and U14-10 (GND)

        Between U14-6 (CANH) and U14-10 (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.

    8. WAVEFORM 2


      1. B005MNKE89
        *a 1 V/DIV.
        *b 10 μsec./DIV.

        CAN communication signal

        Item Content
        Terminal Name

        Between U14-11 (CA1N) and U14-10 (GND)

        Between U14-12 (CANL) and U14-10 (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.