LIN COMMUNICATION SYSTEM HOW TO PROCEED WITH TROUBLESHOOTING

CAUTION / NOTICE / HINT

PROCEDURE

1. VEHICLE BROUGHT TO WORKSHOP

   Result
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2. CUSTOMER PROBLEM ANALYSIS

   
   

   • When 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 when 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 in 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
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3. INSPECT BATTERY VOLTAGE

   
   

   1. Measure the battery voltage with the ignition switch off.

      Standard Voltage
      11 to 14 V

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

      Result
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4. CHECK COMMUNICATION FUNCTION OF LIN COMMUNICATION SYSTEM*

   
   

   1. Using the GTS, inspect the LIN communication function to ensure there are no malfunctions in the communication system.

      Click here

      Result
      Result Proceed to DTC is not output A DTC is output B

   
   

   B

   GO TO DIAGNOSTIC TROUBLE CODE CHART Click here

   A

5. OVERALL ANALYSIS AND TROUBLESHOOTING*

   
   

   1. Terminals of ECU.

      Click here

      Result
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6. REPAIR OR REPLACE

   Result
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7. CONFIRMATION TEST

   Result
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   END