LIN COMMUNICATION SYSTEM HOW TO PROCEED WITH TROUBLESHOOTING

Tech Tips


  • Use these procedures to troubleshoot the LIN communication system.

  • *: Use the intelligent tester.


  1. VEHICLE BROUGHT TO WORKSHOP


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  2. INSPECT AUXILIARY BATTERY VOLTAGE

    Standard voltage
    11 to 14 V

    1. If the voltage is below 11 V, recharge or replace the auxiliary battery before proceeding.


      NEXT

  3. INSPECT COMMUNICATION FUNCTION OF CAN COMMUNICATION SYSTEM*


    1. Using the intelligent tester, inspect the CAN communication function to ensure there are no malfunctions in the communication system.

      Result
      Result Proceed to
      No DTCs output A
      DTCs output (for LHD) B
      DTCs output (for RHD) C

      B

      GO TO CAN COMMUNICATION SYSTEM Click here

      C

      GO TO CAN COMMUNICATION SYSTEM Click here

      A

  4. CHECK FOR DTC OF LIN COMMUNICATION SYSTEM*


    1. Using the intelligent tester, check for DTC the LIN communication.

      Result
      Result Proceed to
      No DTCs output A
      DTCs output B

      B

      GO TO DIAGNOSTIC TROUBLE CODE CHART Click here

      A

  5. PROBLEM SYMPTOMS TABLE


    1. Refer to the problem symptoms table Click here.

      Result
      Result Proceed to
      Fault is not listed in problem symptoms table A
      Fault is listed in problem symptoms table B

      B

      Go to step 7
      A

  6. OVERALL ANALYSIS AND TROUBLESHOOTING*


    1. Data List/Active Test Click here

    2. Terminals of ECU Click here


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  7. ADJUST, REPAIR OR REPLACE


    NEXT
    END