PRE-CRASH SAFETY SYSTEM Pre-crash Safety System Circuit

PROCEDURE


  1. CUSTOMER PROBLEM ANALYSIS AND SYMPTOM CHECK


    1. Check the customer problem analysis and symptom.

      Click here

      Result
      Proceed to
      NEXT

    NEXT

  2. INSPECT BATTERY VOLTAGE


    1. Measure the battery voltage.

      Standard voltage
      11 to 14 V

    2. Using the parts location and system diagram, check the system for blown-out fuses, open or short circuits in the wire harness(es) and connectors that are not properly connected by performing a visual check.

      Tech Tips

      If the voltage is 11 V or less, replace or recharge the battery before proceeding to the next step.

      Result
      Proceed to
      NEXT

    NEXT

  3. CHECK DRIVING SUPPORT ECU ASSEMBLY


    1. A01XOZZC02
      *a

      Front view of wire harness connector

      (to Driving Support ECU Assembly)

      Check driving support ECU assembly.

      Note

      As the connector may be damaged if a load of more than 10 kg (22 lb) is applied to it, do not apply any more load than necessary to the connector.


      1. Disconnect the driving support ECU assembly connector.

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

        Note

        DTCs may be output when connectors are disconnected during inspection. Therefore, make sure to clear the DTCs using the GTS once the inspection has been completed.

        Standard Voltage
        Tester Connection Switch Condition Specified Condition
        I19-30 (B) - Body ground Engine switch on (IG)

        11 to 14 V*1

        10.5 to 16 V*2
        I19-30 (B) - Body ground Engine switch off Below 1 V
        *1: w/o Stop and Start System
        *2: w/ Stop and Start System

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

        Standard Resistance
        Tester Connection Condition Specified Condition
        I19-25 (GND) - Body ground Always Below 1 Ω
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  4. INSPECT MILLIMETER WAVE RADAR SENSOR ASSEMBLY (BEAM AXIS MISALIGNMENT READING)

    Note

    Before checking the millimeter wave radar sensor assembly beam axis deviation, check the installation condition of the millimeter wave radar sensor assembly.


    1. Adjust the reflector height.

      Click here

    2. Place the reflector.

      Click here

    3. Connect the GTS to the DLC3.

    4. Turn the GTS on.

    5. Turn the cruise control switch (ON/OFF button) on.

    6. Enter the following menus: Powertrain / Radar Cruise / Utility / Beam Axis Misalignment Reading.

    7. Check the amount of misalignment and make a note.


      Powertrain > Radar Cruise > Utility
      Tester Display
      Beam Axis Misalignment Reading
      Result
      Result Proceed to
      There is no beam axis misalignment A
      There is a beam axis misalignment B

    B

    ADJUST MILLIMETER WAVE RADAR SENSOR BEAM AXIS

    A

  5. CHECK CAN COMMUNICATION SYSTEM


    1. Use the GTS to check if the CAN communication system is functioning normally.

      Result
      Result Proceed to
      CAN communication system DTCs are not output A
      CAN communication system DTCs are output (for LHD) B
      CAN communication system DTCs are output (for RHD) C

    B

    GO TO CAN COMMUNICATION SYSTEM Click here

    C

    GO TO CAN COMMUNICATION SYSTEM Click here

    A

  6. CHECK FOR DTCs


    1. Check for DTCs and note any codes that are output.

      Click here


      Body Electrical > Pre-Crash 2 > Trouble Codes

    2. Clear the DTCs.

      Click here


      Body Electrical > Pre-Crash 2 > Clear DTCs

    3. Recheck for DTCs. Try to reproduce the DTCs by duplicating the conditions indicated by the DTCs.

      Click here


      Body Electrical > Pre-Crash 2 > Trouble Codes
      Result
      Result Proceed to
      DTCs are not output A
      DTCs are output B

    B

    GO TO DIAGNOSTIC TROUBLE CODE CHART Click here

    A

  7. DATA LIST / ACTIVE TEST


    1. Using the GTS, check the Data List.

      Click here

    2. Using the GTS, perform the Active Test.

      Click here

      Result
      Proceed to
      NEXT

    NEXT

  8. VEHICLE CONTROL HISTORY


    1. Check whether the vehicle control history (PCS operation history) matches the customer analysis.

      Click here

      Result
      Result Proceed to
      Vehicle control history matches the customer analysis A
      Vehicle control history does not match customer analysis or there is no vehicle control history B

    A

    END

    B

    USE SIMULATION METHOD TO CHECK Click here