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LIN COMMUNICATION SYSTEM HOW TO PROCEED WITH TROUBLESHOOTING

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Tip:

  • Use these procedures to troubleshoot the LIN communication system.

  • *: Use the intelligent tester.


  1. Click here

    VEHICLE BROUGHT TO WORKSHOP


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  2. Click here

    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.


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  3. Click here

    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.

      Table 1. Result
      Result Proceed to
      No DTCs output A
      DTCs output (for LHD) B
      DTCs output (for RHD) C

      • B
      • GO TO CAN COMMUNICATION SYSTEM (see pageClick here)
      • C
      • GO TO CAN COMMUNICATION SYSTEM (see pageClick here)
      • A
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    CHECK FOR DTC OF LIN COMMUNICATION SYSTEM*


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

      Table 2. Result
      Result Proceed to
      No DTCs output A
      DTCs output B

      • B
      • GO TO DIAGNOSTIC TROUBLE CODE CHART (see pageClick here)
      • A
  5. Click here

    PROBLEM SYMPTOMS TABLE


    1. Refer to the problem symptoms table (see pageClick here).

      Table 3. 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
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    OVERALL ANALYSIS AND TROUBLESHOOTING*


    1. Data List/Active Test (see pageClick here)

    2. Terminals of ECU (see pageClick here)


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  7. Click here

    ADJUST, REPAIR OR REPLACE


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    • END