PRE-CRASH SAFETY SYSTEM TERMINALS OF ECU

  1. CHECK DRIVING SUPPORT ECU ASSEMBLY

    E321781N12

    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

      Power source

      Power switch on (IG)

      11 to 14 V

      Power switch off

      Below 1 V
      Tip:

      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

      Power switch on (IG)

      Skid control buzzer operating

      0 to 1.5 V

      Power switch on (IG)

      Skid control buzzer not operating

      11 to 14 V

      G168-11 (CA2L) - G168-28 (GND)

      LG - BR

      CAN communication signal

      Power switch on (IG)

      Pulse generation

      (See waveform 1)

      G168-9 (CA1N) - G168-28 (GND)

      W - BR

      CAN communication signal

      Power switch on (IG)

      Pulse generation

      (See waveform 2)

      G168-10 (CA2H) - G168-28 (GND)

      P - BR

      CAN communication signal

      Power switch on (IG)

      Pulse generation

      (See waveform 3)

      G168-8 (CA1P) - G168-28 (GND)

      B - BR

      CAN communication signal

      Power switch on (IG)

      Pulse generation

      (See waveform 4)
    5. E228688E01

      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

        Power switch on (IG)
        Tip:

        The waveform varies depending on the CAN communication signal.

    6. E228688E01

      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

        Power switch on (IG)
        Tip:

        The waveform varies depending on the CAN communication signal.

    7. E228691E01

      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

        Power switch on (IG)
        Tip:

        The waveform varies depending on the CAN communication signal.

    8. E228691E01

      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

        Power switch on (IG)
        Tip:

        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 BOOSTER WITH MASTER CYLINDER ASSEMBLY (SKID CONTROL ECU)

    Click here