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How To Proceed With Troubleshooting

NOTE:
  • Use these procedures to troubleshoot the entry and start system (for entry function).
  • *: Use the SSM3.
  1. VEHICLE BROUGHT TO WORKSHOP

    NEXT

  2. CUSTOMER PROBLEM ANALYSIS
    NOTE:
    • 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. Does it occur recently or for a long time?
    Where? Does it occur at specified place?
    Under what conditions? Unlock/lock the door, engine switch on (IG), engine start.
    How did it happen? Problem symptoms(1)
    (1) 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. Did you try to engine start by put the electrical key direct on the engine switch and press the engine switch on (IG).
    10. If the interior warning buzzers do not sound.
    11. If the steering lock does not unlock.
    12. Any other details concerning the problem.
    • If it is supposed that electric 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 when the key was even right by 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 0.1m {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 1m {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 roughly using the "Key Low Battery" item in the [Current Data Display & Save] (See CURRENT DATA DISPLAY & SAVE/SYSTEM OPERATION CHECK MODE  ).
      10. If the customer installed any optional components (theft deterrent devices, wireless fog lights, etc.) to the vehicle.

    NEXT

  3. INSPECT BATTERY VOLTAGE

    Standard voltage: 11 to 14V

    1. If the voltage is below 11V, recharge or replace the battery before proceeding.
      NOTE: A simple method to determine whether the battery is depleted is to operate the horn

      NEXT

  4. VSC System Inspection
    1. Use the SSM3 to check if the VSC system is functioning normally.
      NOTE:
      • If the certification ECU (smart key ECU assembly) mistakenly receives a vehicle speed signal, communication between the vehicle and the SSM3 fails.
      • Be sure to check "Vehicle Speed" displayed on the [Current Data Display & Save] to make sure that the vehicle speed is not abnormal.

      Result

      Result Proceed to
      No vehicle speed signal is mistakenly received. A
      A vehicle speed signal is mistakenly received. B

      B: GO TO VSC SYSTEM  (See )

      A: Go to next step

  5. Communication inspection of the CAN communication system
    1. Check CAN communication system. (Refer to HOW TO TROUBLESHOOT )

      Result

      Result Proceed to
      Functioning properly A
      Not functioning properly B

      B: Go to "CAN communication system" ("How to troubleshoot") (Refer to HOW TO TROUBLESHOOT ).

      A: Go to next step

  6. Communication function inspection of large-scale multiplex communication system for vehicle body [LIN]
    1. Inspect the large-scale multiplex communication system for vehicle body. (Refer to HOW TO TROUBLESHOOT )

      Result

      Result Proceed to
      Functioning properly A
      Not functioning properly B

      B: Go to "large-scale multiplex communication system for vehicle body [LIN] (How to troubleshoot)" (Refer to HOW TO TROUBLESHOOT )

      A: Go to next step

  7. CHECK FOR DTC*
    1. Recheck for DTCs (See CURRENT DATA DISPLAY & SAVE/SYSTEM OPERATION CHECK MODE  ). Based on the DTCs output, proceed each system's DTC procedure.

      Result

      Result Proceed to
      DTC is not output A
      Steering lock system DTC is output B
      Engine Immobilizer system DTC is output C
      Entry and start system (for entry function) DTC is output D

      B: GO TO STEERING LOCK SYSTEM (Refer to LIST OF DIAGNOSTIC CODES ).

      C: GO TO ENGINE Immobilizer SYSTEM (Refer to DTC B278A FAULTY IMMOBILIZER POWER )

      D: GO TO DIAGNOSTIC TROUBLE CODE CHART 

      A: Go to next step

  8. PROBLEM SYMPTOMS TABLE
    1. Refer to 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  10

      A: Go to next step

  9. OVERALL ANALYSIS AND TROUBLESHOOTING*
    1. Operation Check (See OPERATION CHECK  )
    2. Check [Current Data Display & Save]/[System Operation Check Mode] (See CURRENT DATA DISPLAY & SAVE/SYSTEM OPERATION CHECK MODE  ).
    3. Check ECM terminal arrangement (See ECM TERMINAL ARRANGEMENT  )

      NEXT

  10. REPAIR OR REPLACE

    NEXT

  11. CHECK FOR DTC*
    1. Clear the DTCs (See DTC CHECK/CLEAR  )
    2. Check for DTCs (See DTC CHECK/CLEAR  )
      NOTE: Before checking for DTCs, perform the "DTC Output Confirmation Operation" procedure (See DIAGNOSTIC TROUBLE CODE CHART  ).

      Result

      Result Proceed to
      DTC is not output A
      Entry and start system (for entry function) DTC is output B

      B: GO TO DIAGNOSTIC TROUBLE CODE CHART  (See )

      A: END

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