LIN COMMUNICATION SYSTEM HOW TO PROCEED WITH TROUBLESHOOTING

DTC Code DTC Name
HOW TO PROCEED WITH TROUBLESHOOTING

CAUTION / NOTICE / HINT

Tech Tips


  • Use the following procedure to troubleshoot the LIN communication system.

  • *: Use the GTS.

PROCEDURE


  1. VEHICLE BROUGHT TO WORKSHOP

    Result
    Proceed to
    NEXT

    NEXT
  2. CUSTOMER PROBLEM ANALYSIS

    Tech Tips


    • In troubleshooting, confirm that the problem symptoms have been accurately identified. Preconceptions should be discarded in order to make an accurate judgment. To clearly understand what the problem symptoms are, it is extremely important to ask the customer about the problem and the conditions at the time the malfunction occurred.

    • Gather as much information as possible for reference. Past problems that seem unrelated may also help in some cases.

    • The following 5 items are important points for problem analysis:

    What Vehicle model, system name
    When Date, time, occurrence frequency
    Where Road conditions
    Under what conditions? Driving conditions, weather conditions
    How did it happen? Problem symptoms
    Result
    Proceed to
    NEXT

    NEXT
  3. PRE-CHECK


    1. Measure the battery voltage.

      Standard Voltage
      11 to 14 V

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

    2. Check the fuses and relays.

    3. Check the connectors and terminals to make sure that there are no abnormalities such as a loose connection or deformation.

      Result
      Proceed to
      NEXT

    NEXT
  4. INSPECT COMMUNICATION FUNCTION OF CAN COMMUNICATION SYSTEM*


    1. Using the GTS, check for CAN communication system DTCs.

      Click here

      Result
      Result Proceed to
      CAN DTCs are not output A
      CAN DTCs are output B

    B
    A
  5. INSPECT COMMUNICATION FUNCTION OF LIN COMMUNICATION SYSTEM*


    1. Using the GTS, check for LIN communication system DTCs.

      Click here

      Result
      Result Proceed to
      LIN DTCs are not output A
      LIN DTCs are output B

    B
    A
  6. OVERALL ANALYSIS AND TROUBLESHOOTING*


    1. Terminals of ECU

      Click here

    2. Data List / Active Test

      Click here

      Result
      Proceed to
      NEXT

    NEXT
  7. REPAIR OR REPLACE

    Result
    Proceed to
    NEXT

    NEXT
  8. CONFIRMATION TEST

    Result
    Proceed to
    NEXT

    NEXT