PRE-CRASH SAFETY SYSTEM Pre-crash Safety System Circuit

PROCEDURE


  1. CUSTOMER PROBLEM ANALYSIS AND SYMPTOM CHECK

    Result
    Proceed to
    NEXT

    NEXT

  2. INSPECT BATTERY VOLTAGE


    1. Measure the auxiliary battery voltage with the power switch off.

      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 auxiliary battery before proceeding to the next step.

      Result
      Proceed to
      NEXT

    NEXT

  3. CHECK DRIVING SUPPORT ECU ASSEMBLY


    1. 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.

      A0021LAE20

      1. Disconnect the M1 driving support ECU assembly connector.

      2. Measure the resistance and voltage on the wire harness side connector 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.

        Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
        M1-30 (B) - Body ground B - Body ground Power source Power switch on (IG) 11 to 14 V
        Power switch off Below 1 V
        M1-25 (GND) - Body ground BR - Body ground 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
      Proceed to
      NEXT

    NEXT

  5. CHECK CAN COMMUNICATION SYSTEM


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

      Result
      Proceed to
      CAN communication system DTCs are not output
      CAN communication system DTCs are output

    CAN communication system DTCs are output

    GO TO CAN COMMUNICATION SYSTEM Click here

    CAN communication system DTCs are not output

  6. CHECK FOR DTCs (PRE-CRASH 2)


    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
      Proceed to
      DTCs are not output
      DTCs are output

    DTCs are output

    GO TO DIAGNOSTIC TROUBLE CODE CHART Click here

    DTCs are not output

  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. CHECK 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