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*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

      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

      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. 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

        Ignition switch ON
        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

        Ignition switch ON
        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

        Ignition switch ON
        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

        Ignition switch ON
        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 ACTUATOR ASSEMBLY (SKID CONTROL ECU)

    Click hereClick here