ENTRY AND START SYSTEM(for Start Function) HOW TO PROCEED WITH TROUBLESHOOTING

DTC Code DTC Name
HOW TO PROCEED WITH TROUBLESHOOTING

CAUTION / NOTICE / HINT

Tech Tips


  • Use the following procedure to troubleshoot the entry and start system (for start function).

  • *: Use the GTS.

PROCEDURE


  1. VEHICLE BROUGHT TO WORKSHOP

    Result
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  2. CUSTOMER PROBLEM ANALYSIS CHECK

    Tech Tips


    • In 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 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 for problem analysis:

      What Vehicle model, system name
      When Date, time, occurrence frequency
      Where Road conditions
      Under what conditions? Running conditions, driving conditions, weather conditions
      How did it happen? Problem symptoms*

      • *: Be sure to ask the customer in detail about the following points concerning the vehicle operating conditions, environment and problem, and then check for DTCs.


        1. If the entry lock/unlock function does not operate for all doors.

        2. If the entry lock function does not operate.

        3. If the entry unlock function does not operate.

        4. If both the entry lock and unlock functions do not operate.

        5. If the wireless lock and unlock functions do not operate.

        6. If there is no power even when the engine switch is pressed [does not turn on (ACC)].

        7. If the engine does not start with the entry ignition function.

        8. If the outside warning buzzers do not sound.

        9. If the customer attempted to start the engine by touching the electrical key to the engine switch and pressing the engine switch.

        10. If the interior warning buzzers do not sound.

        11. If the steering does not unlock.

        12. Any other details concerning the problem.

      • If it is thought that wave interference is likely, be sure to ask the customer in detail about the following points concerning the vehicle operating conditions, environment and problem.


        1. Specific locations where the system does not operate (such as near TV towers, large video displays, wireless garage door opener systems, wireless security cameras, home security systems, etc.).

        2. Specific times when the system does not operate: Whether or not symptoms occurred immediately after purchase or only recently. Whether or not the symptoms occurred even when the key was near the vehicle (electrical key antenna).

        3. If the system does not operate only when near specific vehicles (there may be an effect from electric waves from the wireless systems of other vehicles).

        4. If the system operates intermittently.

        5. If the key is bundled together with other items.

        6. If the key is carried together with other electronic devices, such as cell phones, personal computers, portable music players, other electrical keys, etc. (keep the key at least 0.1 m (0.33 ft.) away from such items).

        7. Where the key is being kept when not in use: Whether or not the key being placed within 1 m (3.28 ft.) of items such as TVs, DVD recorders, induction cookers, rice cookers, dishwashers, modems, cell phones, personal computers, microwave ovens, desk or floor lamps, cordless telephones, etc.

        8. If there are electronic devices that transmit electric waves placed in the vehicle.

        9. When the key battery was last replaced (when the battery is low): The key battery can be checked using the "Key Low Battery" item in the Data List.

          Click here

        10. If the customer installed any optional components (theft deterrent devices, wireless fog lights, etc.) to the vehicle.

    Result
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  3. INSPECT BASIC OPERATION


    1. Inspect battery voltage.

      Standard voltage
      11 to 14 V

      Note

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

    2. Check for blown fuses, open or shorted wire harnesses, improperly connected connectors and other problems in areas that can be visually inspected.

      Result
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  4. INSPECT COMMUNICATION FUNCTION OF CAN COMMUNICATION SYSTEM*


    1. Use the GTS to check if the CAN communication system is functioning normally.

      Click here

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

    B
    A
  5. CHECK COMMUNICATION FUNCTION OF LIN COMMUNICATION SYSTEM*


    1. Use the GTS to check if the CAN communication system is functioning normally.

      Click here

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

    B
    A
  6. CHECK FOR DTC*


    1. Check for DTCs and note any codes that are output.

      Click here

      Result
      Result Proceed to
      DTC is not output A
      Steering lock system DTC is output B
      Engine immobiliser system DTC is output C
      Entry and start system (for Entry Function) DTC is output D
      Entry and start system (for Start Function) DTC is output E

    B
    C
    D
    E
    A
  7. PROBLEM SYMPTOMS TABLE


    1. Refer to Problem Symptoms Table.

      Click here

      Result
      Result Proceed to
      Fault is not listed in the Problem Symptoms Table A
      Fault is listed in the Problem Symptoms Table B

    B
    A
  8. OVERALL ANALYSIS AND TROUBLESHOOTING*


    1. Operation Check.

      Click here

    2. Data List/Active Test.

      Click here

    3. Terminals of ECU.

      Click here

      Result
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  9. REPAIR OR REPLACE

    Result
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  10. CHECK FOR DTC*


    1. Clear the DTCs.

      Click here

    2. Recheck for DTCs.

      Click here

      Tech Tips

      Before checking for DTCs, perform the "DTC Output Confirmation Operation" procedure.

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

    A
    B