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Home >> Lexus >> 2008 >> LX 570 >> Repair and Diagnosis >> Body & Frame >> Door Locks >> Theft Deterrent / Keyless Entry >> SMART ACCESS SYSTEM WITH PUSH-BUTTON START (for Entry Function) >> All Door Entry Lock/Unlock Functions do not Operate, but Wireless Functions Operate >> Inspection Procedure

Inspection Procedure

NOTE: Before performing the inspection, check that there are no problems related to the "Can Communication System" and "LIN Communication System"
  1. READ VALUE USING TECHSTREAM (AUTO ENTRY CANCEL SW) 
    1. Using the Techstream, read the Data List.

      Smart Access 

      TESTER DISPLAY CHART

      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      Auto Entry Cancel SW Entry function cancel/ON or OFF Mode status displayed -

      Result 

      RESULT CHART

      Result Proceed to
      Entry function cancel is OFF A
      Entry function cancel is ON B

    B: PERFORM CANCELLATION OF ENTRY KEY CANCEL FUNCTION  (See OPERATION CHECK  )

    A: Go to next step 

  2. CHECK WAVE ENVIRONMENT 
    1. Move the electrical key transmitter as described below and perform the operation inspection (See OPERATION CHECK  ).

      HINT:

      • When the electrical key transmitter is brought near the door outside handle or electrical key antenna, the possibility of wave interference decreases, and it can be determined if wave interference is causing the problem symptom.
      • The transmitting wave of the wireless function and entry function are the same, but the wave logic is different. As a result, it is possible that only the wireless function or only the entry function is affected by wave interference.
      1. Bring the electrical key transmitter near the door outside handle (for driver side), and perform a driver door entry lock and unlock operation check.
        NOTE: If the key is brought within 0.2 m (0.656 ft.) of the door handle, communication may not be possible.
        Fig 1: Identifying Distance Range Of Electrical Key Transmitter - Door Outside Handle (For Driver Side)
        G05763665Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      2. Bring the electrical key transmitter near the door outside handle (for front passenger side), and perform a front passenger door entry lock and unlock operation check.
        NOTE: If the key is brought within 0.2 m (0.656 ft.) of the door handle, communication may not be possible.
        Fig 2: Identifying Distance Range Of Electrical Key Transmitter - Door Outside Handle (For Passenger Side)
        G05763666Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      3. Bring the electrical key transmitter near the rear door outside handle LH, and perform a rear left door entry lock and unlock operation check.
        NOTE: If the key is brought within 0.2 m (0.656 ft.) of the door handle, communication may not be possible.
        Fig 3: Identifying Distance Range Of Electrical Key Transmitter - Door Outside Handle (For Rear Door Outside Handle LH)
        G05763667Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      4. Bring the electrical key transmitter near the rear door outside handle RH, and perform a rear right door entry lock and unlock operation check.
        NOTE: If the key is brought within 0.2 m (0.656 ft.) of the door handle, communication may not be possible.
      5. Bring the electrical key transmitter near the indoor electrical key antenna (in center console), and perform an engine start check
        Fig 4: Identifying Distance Range Of Electrical Key Transmitter - Door Outside Handle (For Rear Door Outside Handle RH)
        G05763668Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
        NOTE: If the key is brought within 0.2 m (0.656 ft.) of the center console, communication may not be possible.
      6. Bring the electrical key transmitter near the indoor electrical key antenna (in rear No. 1 seat cushion), and perform an engine start check.
        NOTE: If the key is brought within 0.2 m (0.656 ft.) of the rear No. 1 seat cushion, communication may not be possible.
      7. Bring the electrical key transmitter near the indoor electrical key antenna (in rear No. 2 seat cushion), and perform an engine start check.
        NOTE: If the key is brought within 0.2 m (0.656 ft.) of the rear No. 2 seat cushion, communication may not be possible.
      8. Bring the electrical key transmitter near the electrical key antenna (in rear bumper), and perform an entry back door open function check.
        NOTE: If the key is brought within 0.2 m (0.656 ft.) of the rear bumper, communication may not be possible.

        HINT:

        If the inspection result is that the problem only occurs in certain locations or times of day, the possibility of wave interference is high. Also, added vehicle components may cause wave interference. If installed, remove them and perform the operation check.

        Fig 5: Identifying Distance Range Of Electrical Key Transmitter - Electrical Key Antenna (In Rear Bumper)
        G05763669Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

        Result 

        RESULT CHART

        Result Proceed to
        All operation checks fail A
        Some operation checks are normal B

    B: AFFECTED BY WAVE INTERFERENCE 

    A: Go to next step 

  3. KEY DIAGNOSTIC MODE 
    1. Diagnostic mode inspection (door electrical key oscillator).
      1. Connect the Techstream to the DLC3.
      2. Turn the engine switch on (IG).
      3. Turn the Techstream on.
      4. Enter the following menus: Body Electrical / Smart Access / Smart Communication Check / Overhead + Driver Side.
      5. When the electrical key transmitter is in the position shown in the illustration, check that the wireless door lock buzzer sounds.
        Fig 6: Identifying Distance Range Of Door Electrical Key Oscillator
        G05763670Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Diagnostic mode inspection (door electrical key oscillator).
      1. Connect the Techstream to the DLC3.
      2. Turn the engine switch on (IG).
      3. Turn the Techstream on.
      4. Enter the following menus: Body Electrical / Smart Access / Smart Communication Check / Overhead + Passenger Side.
        Fig 7: Identifying Distance Range Of Diagnostic Mode (Door Electrical Key Oscillator)
        G05763671Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      5. When the electrical key transmitter is in the position shown in the illustration, check that the wireless door lock buzzer sounds.
    3. Diagnostic mode inspection (door electrical key oscillator).
      1. Connect the Techstream to the DLC3.
      2. Turn the engine switch on (IG).
      3. Turn the Techstream on.
      4. Enter the following menus: Body Electrical / Smart Access / Smart Communication Check / Overhead + Driver Side Rear.
      5. When the electrical key transmitter is in the position shown in the illustration, check that the wireless door lock buzzer sounds.
        Fig 8: Identifying Distance Range Of Diagnostic Mode (Door Electrical Key Oscillator)
        G05763672Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    4. Diagnostic mode inspection (door electrical key oscillator).
      1. Connect the Techstream to the DLC3.
      2. Turn the engine switch on (IG).
      3. Turn the Techstream on.
      4. Enter the following menus: Body Electrical / Smart Access / Smart Communication Check / Overhead + Passenger Side Rear.
      5. When the electrical key transmitter is in the position shown in the illustration, check that the wireless door lock buzzer sounds.
        Fig 9: Identifying Distance Range Of Diagnostic Mode (Door Electrical Key Oscillator)
        G05763673Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    5. Diagnostic mode inspection (indoor electrical key antenna [for Front Floor]).
      1. Connect the Techstream to the DLC3.
      2. Turn the engine switch on (IG).
      3. Turn the Techstream on.
      4. Enter the following menus: Body Electrical / Smart Access / Smart Communication Check / Overhead + Front Room.
      5. When the electrical key transmitter is in the position shown in the illustration, check that the wireless door lock buzzer sounds.
        Fig 10: Identifying Distance Range Of Diagnostic Mode - Front Door (Indoor Electrical Key Antenna)
        G05763638Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    6. Diagnostic mode inspection (indoor electrical key antenna [for Rear Floor]).
      1. Connect the Techstream to the DLC3.
      2. Turn the engine switch on (IG)
      3. Turn the Techstream on.
      4. Enter the following menus: Body Electrical / Smart Access / Smart Communication Check / Overhead + Rear Room.
      5. When the electrical key transmitter is in the position shown in the illustration, check that the wireless door lock buzzer sounds.
        Fig 11: Identifying Distance Range Of Diagnostic Mode - Rear Door (Indoor Electrical Key Antenna)
        G05763639Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    7. Diagnostic mode inspection (indoor electrical key antenna [for Luggage Compartment]).
      1. Connect the Techstream to the DLC3.
      2. Turn the engine switch on (IG).
      3. Turn the Techstream on.
      4. Enter the following menus: Body Electrical / Smart Access / Smart Communication Check / Overhead + Back Door (inside).
      5. When the electrical key transmitter is in the position shown in the illustration, check that the wireless door lock buzzer sounds.
        Fig 12: Identifying Distance Range Of Diagnostic Mode - For Luggage Compartment (Indoor Electrical Key Antenna)
        G05763640Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    8. Diagnostic mode inspection (electrical key antenna [for Outside Luggage Compartment]).
      1. Connect the Techstream to the DLC3.
      2. Turn the engine switch on (IG).
      3. Turn the Techstream on.
      4. Enter the following menus. Body Electrical / Smart Access / Smart Communication Check / Overhead + Back Door (outside).
      5. When the electrical key transmitter is in the position shown in the illustration, check that the wireless door lock buzzer sounds.
        Fig 13: Identifying Distance Range Of Diagnostic Mode - For Outside Luggage Compartment (Electrical Key Antenna)
        G05763632Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

        Result 

        RESULT CHART

        Result Proceed to
        All diagnostic mode inspections fail A
        Some diagnostic mode inspections fail (door) B
        Some diagnostic mode inspections fail (interior) C
        Some diagnostic mode inspections fail (back door) D
        All diagnostic mode inspections are normal E

    B: GO TO DTC OF OTHER COMPONENTS (PROCEED TO PROBLEM SYMPTOM FLOWCHART FOR EACH DOOR)  (See PROBLEM SYMPTOMS TABLE  )

    C: GO TO OTHER FLOWCHART  (See ROOM OSCILLATOR DOES NOT RECOGNIZE KEY  )

    D: GO TO OTHER FLOWCHART  (See BACK DOOR ENTRY LOCK AND UNLOCK FUNCTIONS DO NOT OPERATE  )

    E: REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)  (See REMOVAL  )

    A: Go to next step 

  4. REPLACE ELECTRICAL KEY TRANSMITTER 
    1. Replace the electrical key transmitter with a new one.
    2. Perform the registration procedure (See REMOVAL ).
  5. CHECK OPERATION 
    1. Check the operation of the entry lock function (See OPERATION CHECK  ).

      OK: Operates normally 

    NG: REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)  (See REMOVAL  )

    OK: END 

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