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Home >> Lexus >> 2018 >> ES 350 >> Repair and Diagnosis (Single Page) >> Body & Frame >> Door Locks >> Smart Access System (For Entry Function) (Diagnostic Codes & Symptom Tests) >> Smart Access System With Push-Button Start (For Entry Function) >> Luggage Compartment Door Entry Unlock Function does not Operate when Key is Outside Luggage Compartment (07/2015 -) >> Procedure
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Luggage Compartment Door Entry Unlock Function does not Operate when Key is Outside Luggage Compartment (07/2015 -): Procedure

  1. READ VALUE USING TECHSTREAM 
    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

      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      Trunk Open Mode Luggage compartment door open mode / ON or OFF Customization status displayed -

      Result

      Result Proceed to
      "Trunk Open Mode" is ON A
      "Trunk Open Mode" is OFF B

    Result:  B

    PERFORM CUSTOMIZE SETTING (Proceed to Customize Parameters) 

    (Refer to CUSTOMIZE PARAMETERS (07/2015 -) )

    Result:  A

    See step  2

  2. READ VALUE USING TECHSTREAM 
    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

      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      Tr/B-Door Unlock SW Luggage door opening switch assembly / ON or OFF ON: Luggage door opening switch assembly pushed
      OFF: Luggage door opening switch assembly not pushed
      -

      OK

      On the Techstream screen, the display changes between ON and OFF according to the chart above.

    Result:  NG

    NG 

    See step  8

    Result:  OK

    OK 

    See step  3

  3. PERFORM ACTIVE TEST USING TECHSTREAM 
    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 / (desired system) / Active Test.
    5. Read the Data List according to the display on the Techstream.
      BACK DOOR (W/ POWER TRUNK LID SYSTEM)

      Tester Display Test Part Control Range Diagnostic Note
      Latch Release Luggage compartment door latch ON/OFF -
      MAIN BODY (W/O POWER TRUNK LID SYSTEM)

      Tester Display Test Part Control Range Diagnostic Note
      Trunk and Back-Door Open Luggage compartment door lock motor ON/OFF -

      OK

      Luggage compartment door lock motor operates.

    Result:  NG

    NG 

    GO TO LUGGAGE COMPARTMENT DOOR OPENER SYSTEM 

    (Refer to HOW TO PROCEED WITH TROUBLESHOOTING (07/2015 -) )

    Result:  OK

    OK 

    See step  4

  4. CHECK WAVE ENVIRONMENT 
    1. Bring the electrical key transmitter sub-assembly near the electrical key antenna (outside luggage), and perform an entry luggage compartment open function check.
      GTY370823Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      TEXT IN ILLUSTRATION

      *a Approximately 0.3 m (0.984 ft.)
      NOTE:

      If the electrical key transmitter sub-assembly is brought within 0.2 m (0.656 ft.) of the rear bumper, communication may not be possible.

      HINT: 

      • When pressing the luggage door opening switch assembly, hold the electrical key transmitter sub-assembly approximately 1 m (3.28 ft.) above the ground and approximately 0.3 m (0.984 ft.) away from the vehicle as shown in the illustration.
      • When the electrical key transmitter sub-assembly is brought near the electrical key antenna (outside luggage), the possibility of wave interference decreases, and it can be determined if wave interference is causing the problem symptom.
      • If the operation check is normal, the possibility of wave interference is high. Also, added vehicle components may cause wave interference. If installed, remove them and perform the operation check.

      OK

      Entry functions operate normally.

    Result:  OK

    OK 

    AFFECTED BY WAVE INTERFERENCE 

    Result:  NG

    NG 

    See step  5

  5. CHECK KEY DIAGNOSTIC MODE 
    1. Check the following antenna in key diagnostic mode (Refer to OPERATION CHECK (07/2015 -) ).
    2. Select either channel 1 or channel 2 and inspect key diagnostic mode for each channel.
      GTY370823Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      TEXT IN ILLUSTRATION

      *a 0.7 to 1.0 m (2.30 to 3.28 ft.)
      1. When the electrical key transmitter sub-assembly is held at the same height as the rear bumper upper surface, align it with the center of the rear of the vehicle and check that the wireless door lock buzzer sounds.

        HINT: 

        • Hold the electrical key transmitter sub-assembly at the same height as the rear bumper upper surface and align it with the center of the rear of the vehicle (0.7 to 1.0 m (2.30 to 3.28 ft.). Make sure that the direction of the electrical key transmitter sub-assembly is as shown in the illustration.
        • If the buzzer sounds, it can be determined that the electrical key antenna (outside luggage) is operating normally.
        • If the buzzer sounds with [CH1] displayed but not with [CH2], the electrical key transmitter sub-assembly cannot be detected by channel 2 due to a malfunction, such as wave interference.

        OK

        Wireless door lock buzzer sounds.

    Result:  OK

    OK 

    REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) 

    (Refer to REMOVAL (07/2015 -) )

    Result:  NG

    NG 

    See step  6

  6. CHECK HARNESS AND CONNECTOR (CERTIFICATION ECU - ELECTRICAL KEY ANTENNA) 
    1. Disconnect the Q1 certification ECU (smart key ECU assembly) connector.
    2. Disconnect the U10 electrical key antenna (outside luggage) connector.
    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      Q1-1 (CG8B) - U10-2 (CLGB) Always Below 1 Ω
      Q1-2 (CLG8) - U10-1 (ANTE8) Always Below 1 Ω
      Q1-1 (CG8B) - Body ground Always 10 kΩ or higher
      Q1-2 (CLG8) - Body ground Always 10 kΩ or higher

    Result:  NG

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

    Result:  OK

    OK 

    See step  7

  7. INSPECT ELECTRICAL KEY ANTENNA (OUTSIDE LUGGAGE) 
    1. Remove the electrical key antenna (outside luggage). (Refer to REMOVAL (07/2015 -) )
      GTY315169Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      1 (ANTE8) - 2 (CLGB) Always Below 1 Ω
      TEXT IN ILLUSTRATION

      *a Component without harness connected:
      (Electrical Key Antenna (Outside Luggage)

    Result:  OK

    OK 

    REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) 

    (Refer to REMOVAL (07/2015 -) )

    Result:  NG

    NG 

    REPLACE ELECTRICAL KEY ANTENNA (OUTSIDE LUGGAGE) 

    (Refer to REMOVAL (07/2015 -) )

  8. INSPECT LUGGAGE DOOR OPENING SWITCH ASSEMBLY 
    1. Remove the luggage door opening switch assembly (Refer to REMOVAL (07/2015 -) ).
    2. Measure the resistance according to the value(s) in the table below.
      GTY363528Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Standard Resistance

      Tester Connection Condition Specified Condition
      1 (E) - 2 (UL) Luggage door opening switch assembly not pushed 10 kΩ or higher
      1 (E) - 2 (UL) Luggage door opening switch assembly pushed Below 1 Ω
      TEXT IN ILLUSTRATION

      *a Component without harness connected
      (Luggage Door Opening Switch Assembly)

    Result:  NG

    NG 

    REPLACE LUGGAGE DOOR OPENING SWITCH ASSEMBLY 

    Result:  OK

    OK 

    See step  9

  9. CHECK HARNESS AND CONNECTOR (CERTIFICATION ECU - LUGGAGE DOOR OPENING SWITCH) 
    1. Disconnect the Q1 certification ECU (smart key ECU assembly) connector.
    2. Disconnect the U11 luggage door opening switch assembly connector.
    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      Q1-27 (TSW5) - U11-2 (UL) Always Below 1 Ω
      U11-1 (E) - Body ground Always Below 1 Ω
      Q1-27 (TSW5) or U11-2 (UL) - Body ground Always 10 kΩ or higher

    Result:  OK

    OK 

    REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) 

    (Refer to REMOVAL (07/2015 -) )

    Result:  NG

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR