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


    NEXT

  2. INSPECT BATTERY VOLTAGE

    Standard voltage
    11 to 14 V

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


    NEXT

  3. INSPECT COMMUNICATION FUNCTION OF CAN COMMUNICATION SYSTEM*


    1. Using the intelligent tester, inspect the CAN communication function to make sure that there are no malfunctions in the communication system Click here.

      Result
      Result Proceed to
      No DTCs are output A
      DTCs are output (for LHD with Entry and Start system) B
      DTCs are output (for LHD without Entry and Start system) C
      DTCs are output (for RHD with Entry and Start system) D
      DTCs are output (for RHD without Entry and Start system) E

      B

      Go to CAN COMMUNICATION SYSTEM Click here

      C

      Go to CAN COMMUNICATION SYSTEM Click here

      D

      Go to CAN COMMUNICATION SYSTEM Click here

      E

      Go to CAN COMMUNICATION SYSTEM Click here

      A

  4. INSPECT COMMUNICATION FUNCTION OF LIN COMMUNICATION SYSTEM*


    1. Using the intelligent tester, inspect the LIN communication function to make sure that there are no malfunctions in the communication system.

      Result
      Result Proceed to
      No DTCs are output A
      DTCs are 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


      NEXT

  7. ADJUST, REPAIR OR REPLACE


    NEXT
    END