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Home >> Lexus >> 2008 >> IS F >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Anti-Theft Systems >> 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

  1. READ VALUE USING TECHSTREAM (ENTRY CANCEL FUNCTION) 
    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 / Data List
    5. Read the Data List according to the display on the Techstream

      Smart Access (Certification ECU (Smart Key ECU Assembly)) 

      NORMAL CONDITION CHART

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

      Result 

      RESULT REFERENCE

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

    A: PERFORM CANCELLATION OF ENTRY KEY CANCEL FUNCTION  (See CUSTOMIZE PARAMETERS  )

    B: Go to next Step 

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

      HINT

      • When the electrical key transmitter is brought near the door outside handle assembly 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 waves of the wireless functions and entry functions are the same, but the wave logic is different Therefore, it is possible that only the wireless functions or only the entry functions are affected by wave interference
    2. Bring the electrical key transmitter near the driver door outside handle assembly, and perform a front driver door entry lock and unlock operation check
      NOTE: If the key is brought within 0.2 m (0.656 ft.) of the door outside handle assembly, communication is not possible.
      Fig 1: Identifying Front Driver Door Entry Lock Clearance
      G05754343Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    3. Bring the electrical key transmitter near the front passenger door outside handle assembly, 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 outside handle assembly, communication is not possible.
      Fig 2: Identifying Front Passenger Door Entry Lock Clearance
      G05754344Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    4. Bring the electrical key transmitter near the outside electrical key oscillator (luggage compartment), and perform an entry luggage compartment door open function check
      NOTE: If the key is brought within 0.2 m (0.656 ft.) of the rear bumper, communication is not 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 3: Identifying Front Passenger Door Entry Lock Clearance
      G05754345Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Result 

      RESULT REFERENCE

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

    A: AFFECTED BY WAVE INTERFERENCE 

    B: Go to next Step 

  3. PERFORM KEY DIAGNOSTIC MODE INSPECTION 
    1. Diagnostic mode inspection (door electrical key oscillator (driver side))
      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 / Utility / Communication Check (Key Diag Mode) / 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 4: Identifying Door Electrical Key Oscillator Clearance (Driver Side)
        G05754346Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Diagnostic mode inspection (door electrical key oscillator (front passenger side))
      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 / Utility / Communication Check (Key Diag Mode) / Overhead + Passenger Side
      5. When the electrical key transmitter is in the position shown in the illustration, check that the wireless door lock buzzer sounds
        Fig 5: Identifying Door Electrical Key Oscillator Clearance (Front Passenger Side Side)
        G05754347Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    3. Diagnostic mode inspection (indoor electrical key oscillator (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 / Utility / Communication Check (Key Diag Mode) / 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 6: Inspecting Ignition Operation Detection Area
        G05754330Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    4. Diagnostic mode inspection (indoor electrical key oscillator (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 / Utility / Communication Check (Key Diag Mode) / 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 7: Inspecting Ignition Operation Detection Area
        G05754331Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    5. Diagnostic mode inspection (indoor electrical key oscillator (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 / Utility / Smart Access / Communication Check (Key Diag mode) / Overhead + Luggage (inside).
      5. When the electrical key transmitter is held at the same height as the rear bumper upper surface and aligned with the center of the rear of the vehicle, check that the wireless door lock buzzer sounds.
        Fig 8: Inspecting Key Lock-In Prevention's Detection
        G05754350Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    6. Diagnostic mode inspection (outside electrical key oscillator (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 / Utility / Communication Check (Key Diag Mode) / Overhead + Luggage (outside)
      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 Outside Electrical Key Oscillator Clearance
        G05754351Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

        Result 

        RESULT REFERENCE

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

    A: GO TO OTHER PROBLEM (Proceed to Problem Symptoms Table Flow Chart for Each Door)  (See PROBLEM SYMPTOMS TABLE  )

    B: GO TO OTHER PROBLEM (Room Oscillator does not Recognize Key)  (See ROOM OSCILLATOR DOES NOT RECOGNIZE KEY  )

    C: GO TO OTHER PROBLEM (Proceed to Problem Symptoms Table)  (See PROBLEM SYMPTOMS TABLE  )

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

    E: Go to next Step 

  4. REPLACE ELECTRICAL KEY TRANSMITTER 
    1. Replace the electrical key transmitter
  5. REGISTER ELECTRICAL KEY TRANSMITTER 
    1. Register the electrical key transmitter (See REGISTRATION  )
  6. CHECK ELECTRICAL KEY TRANSMITTER (OPERATION) 
    1. Check that the entry functions operate normally (See OPERATION CHECK  )

      OK: Entry functions operate normally. 

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

    OK: END (ELECTRICAL KEY TRANSMITTER IS DEFECTIVE) 

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