PRE-CRASH SAFETY SYSTEM TERMINALS OF ECU


  1. CHECK DRIVING SUPPORT ECU ASSEMBLY

    A01V81IN12

    1. Disconnect the G168 driving support ECU assembly connector.

      Note

      If a load of more than 10 kg (22 lb) is placed on the connector, it may break. Do not place more load than is necessary on the 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
      G168-28 (GND) - Body ground BR - Body ground Ground Always Below 1 Ω
      G168-7 (B) - Body ground

      B - Body ground*1

      V - Body ground*2

      		 Power source Ignition switch ON

      11 to 14 V*1

      9.5 to 14 V*2
      Ignition switch off Below 1 V

      *1: w/o Stop and Start System

      *2: w/ Stop and Start System

      Tech Tips

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

    3. Reconnect the G168 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
      G168-3 (BZ) - Body ground LG - Body ground Skid control buzzer output

      Ignition switch ON

      Skid control buzzer operating

      		 0 to 1.5 V

      Ignition switch ON

      Skid control buzzer not operating

      11 to 14 V*1

      9.5 to 14 V*2
      G168-11 (CA2L) - G168-28 (GND) LG - BR CAN communication signal Ignition switch ON

      Pulse generation

      (See waveform 1)
      G168-9 (CA1N) - G168-28 (GND) W - BR CAN communication signal Ignition switch ON

      Pulse generation

      (See waveform 2)
      G168-10 (CA2H) - G168-28 (GND) P - BR CAN communication signal Ignition switch ON

      Pulse generation

      (See waveform 3)
      G168-8 (CA1P) - G168-28 (GND) B - BR CAN communication signal Ignition switch ON

      Pulse generation

      (See waveform 4)

      *1: w/o Stop and Start System

      *2: w/ Stop and Start System

    5. A01V7DEE01

      Waveform 1


      1. CAN communication signal

        Item Content
        Tester Connection G168-11 (CA2L) - G168-28 (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. A01V7DEE01

      Waveform 2


      1. CAN communication signal

        Item Content
        Tester Connection G168-9 (CA1N) - G168-28 (GND)
        Tool Setting 1 V/DIV., 10 μsec./DIV.
        Condition Ignition switch ON

        Tech Tips

        The waveform varies depending on the CAN communication signal.

    7. A01V9AAE01

      Waveform 3


      1. CAN communication signal

        Item Content
        Tester Connection G168-10 (CA2H) - G168-28 (GND)
        Tool Setting 1 V/DIV., 10 μsec./DIV.
        Condition Ignition switch ON

        Tech Tips

        The waveform varies depending on the CAN communication signal.

    8. A01V9AAE01

      Waveform 4


      1. CAN communication signal

        Item Content
        Tester Connection G168-8 (CA1P) - G168-28 (GND)
        Tool Setting 1 V/DIV., 10 μsec./DIV.
        Condition Ignition switch ON

        Tech Tips

        The waveform varies depending on the CAN communication signal.

  2. CHECK MILLIMETER WAVE RADAR SENSOR ASSEMBLY

    Click here

  3. CHECK FORWARD RECOGNITION CAMERA

    Click here

  4. CHECK BRAKE ACTUATOR ASSEMBLY (SKID CONTROL ECU)

    Click here