LIN COMMUNICATION SYSTEM > HOW TO PROCEED WITH TROUBLESHOOTING

for Preparation Click here


HINT:
  1. Use the following procedure to troubleshoot the LIN communication system.
  2. *: Use the Techstream.


1.VEHICLE BROUGHT TO WORKSHOP

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    2.CUSTOMER PROBLEM ANALYSIS

      HINT:
      1. 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.
      2. Gather as much information as possible for reference. Past problems that seem unrelated may also help in some cases.
      3. The following 5 items are important points in the problem analysis:

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

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    3.INSPECT BATTERY VOLTAGE
    1. Measure the battery voltage.

      Standard Voltage:
      11 to 14 V

      HINT:
      If the voltage is below 11 V, recharge or replace the battery before proceeding.

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    4.INSPECT COMMUNICATION FUNCTION OF LIN COMMUNICATION SYSTEM*
    1. Using the Techstream, inspect the LIN communication function to ensure there are no malfunctions in the communication system (Click here ).

      Result:
      Result
      Proceed to
      No DTCs output
      A
      DTCs output
      B


    B.
    Go to DIAGNOSTIC TROUBLE CODE CHART (Click here)
    A


    5.OVERALL ANALYSIS AND TROUBLESHOOTING
    1. Terminals of ECU (Click here)


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    6.REPAIR OR REPLACE

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      7.CONFIRMATION TEST

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        END