ENTRY AND START SYSTEM HOW TO PROCEED WITH TROUBLESHOOTING

Tech Tips


  • Use these procedures to troubleshoot the entry and start system.

  • *: Use the intelligent tester.


  1. VEHICLE BROUGHT TO WORKSHOP


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  2. INSPECT BATTERY VOLTAGE

    Standard voltage
    11 to 14 V

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


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  3. INSPECT COMMUNICATION FUNCTION OF CAN COMMUNICATION SYSTEM*


    1. Using the intelligent tester, check if the CAN communication system is functioning normally Click here.

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

      B

      GO TO DIAGNOSTIC TROUBLE CODE CHART
      A

  4. CHECK FOR DTC*


    1. Check for DTCs and note any stored DTCs Click here.

    2. Delete the DTCs.

    3. Check whether the same DTC(s) relevant to the SFI system or entry and start system recurs by reproducing the symptoms indicated by the noted DTC(s) in the first step above.

      Result
      Result Proceed to
      DTC output does not reoccur A
      SFI system DTC output reoccurs B
      Entry and start system DTC output reoccurs C

      B

      GO TO SFI SYSTEM
      C

      GO TO STEP 7
      A

  5. PROBLEM SYMPTOMS TABLE

    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. Terminals of ECU Click here

    2. Data List / Active Test Click here


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  7. ADJUST, REPAIR OR REPLACE


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  8. CONFIRMATION TEST


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    END