ENTRY AND START SYSTEM(for Entry Function) Luggage Compartment Door Entry Unlock Function does not Operate when Key is Outside Luggage Compartment

DESCRIPTION

If the entry luggage compartment open function does not operate, there may be a malfunction in the luggage electrical key switch circuit or certification ECU (smart key ECU assembly), which receives a signal from the luggage electrical key switch circuit, or a communication error between the vehicle (electrical key antenna (outside luggage compartment)) and electrical key transmitter sub-assembly.

WIRING DIAGRAM

A00231ME27

CAUTION / NOTICE / HINT

Note


  • The entry and start system (for Entry Function) uses the LIN communication system and CAN communication system. Inspect the communication function by following How to Proceed with Troubleshooting. Troubleshoot the entry and start system (for Entry Function) after confirming that the communication systems are functioning properly.

    Click here

  • When using the GTS with the power switch off, connect the GTS to the DLC3 and turn a courtesy light switch on and off at intervals of 1.5 seconds or less until communication between the GTS and the vehicle begins. Then select Model Code "KEY REGIST" under manual mode and enter the following menus: Body Electrical / Entry&Start(CAN). While using the GTS, periodically turn a courtesy light switch on and off at intervals of 1.5 seconds or less to maintain communication between the GTS and the vehicle.

  • Check that there are no electrical key transmitter sub-assemblies in the vehicle.

  • Before replacing the certification ECU (smart key ECU assembly), refer to entry and start system (for Entry Function) Precaution.

    Click here

  • After repair, confirm that no DTCs are output by performing "DTC Output Confirmation Operation".

PROCEDURE


  1. READ VALUE USING GTS (LUGGAGE COMPARTMENT DOOR OPEN MODE)


    1. Connect the GTS to the DLC3.

    2. Turn the power switch on (IG).

    3. Turn the GTS on.

    4. Enter the following menus: Body Electrical / Entry&Start / Data List.

    5. Read the Data List according to the display on the GTS.


      Body Electrical > Entry&Start > Data List
      Tester Display Measurement Item Range Normal Condition Diagnostic Note
      Trunk Open Mode Entry luggage compartment open mode ON or OFF Customization status displayed -

      Body Electrical > Entry&Start > Data List
      Tester Display
      Trunk Open Mode
      Result
      Result Proceed to
      Trunk Open Mode is ON A
      Trunk Open Mode is OFF B

    B

    PERFORM CUSTOMIZE SETTING (Proceed to Customize Parameters) Click here

    A

  2. CHECK LUGGAGE COMPARTMENT DOOR OPENER SYSTEM


    1. Operate the luggage door opening switch assembly in the vehicle and check that the luggage compartment door opens.

      Click here

      Result
      Result Proceed to
      The luggage compartment door opens A
      The luggage compartment door does not open B

    B

    GO TO LUGGAGE COMPARTMENT DOOR OPENER SYSTEM Click here

    A

  3. READ VALUE USING GTS (TR/B-DOOR UNLOCK SW)


    1. Connect the GTS to the DLC3.

    2. Turn the power switch on (IG).

    3. Turn the GTS on.

    4. Enter the following menus: Body Electrical / Entry&Start / Data List.

    5. Read the Data List according to the display on the GTS.


      Body Electrical > Entry&Start > Data List
      Tester Display Measurement Item Range Normal Condition Diagnostic Note
      Tr/B-Door Unlock SW Luggage electrical key switch ON or OFF

      ON: Luggage electrical key switch pushed

      OFF: Luggage electrical key switch not pushed

      		 -

      Body Electrical > Entry&Start > Data List
      Tester Display
      Tr/B-Door Unlock SW
      OK
      The GTS display changes correctly in response to the operation of the luggage electrical key switch.
      Result
      Proceed to
      OK
      NG

    NG

    INSPECT LUGGAGE ELECTRICAL KEY SWITCH Click here

    OK

  4. CHECK WAVE ENVIRONMENT


    1. A0020XLC01
      *a Approximately 0.3 m (0.984 ft.)

      Bring the electrical key transmitter sub-assembly approximately 0.3 m (0.984 ft.) from the electrical key antenna (outside luggage compartment) and perform an entry luggage compartment open function check.

      Tech Tips


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

      • When the electrical key transmitter sub-assembly is brought near the electrical key antenna (outside luggage compartment), the possibility of wave interference decreases, and it can be determined if wave interference is causing the problem symptom.

      • If the inspection result is that the problem only occurs in certain locations or at certain 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.

      • There may be wave interference if the vehicle is near broadcasting antennas, large video displays, wireless garage door opener systems, wireless security cameras, home security systems, etc. In this case, move the vehicle to a different location and check if there is any improvement.

      • If a tool for checking radio waves, such as a signal strength meter, is available, move around the area while observing both the LF band (used by the vehicle antenna to form the detection area) and RF band (used by the electrical key transmitter sub-assembly for transmission) to check for locations where there is wave interference.

      OK
      Entry functions operate normally.
      Result
      Proceed to
      OK
      NG

    OK

    AFFECTED BY WAVE INTERFERENCE

    NG

  5. CHECK KEY DIAGNOSTIC MODE


    1. Check the following antenna in key diagnostic mode.


      Body Electrical > Entry&Start > Utility
      Tester Display
      Communication Check(Key Diag Mode)
    2. A0020XLC01
      *a 0.7 to 1.0 m (2.30 to 3.28 ft.)

      When the electrical key transmitter sub-assembly is brought within 0.7 to 1 m (2.30 to 3.28 ft.) of the electrical key antenna (outside luggage compartment), check that the wireless buzzer sounds.

      Tech Tips


      • Select either channel 1 or channel 2 and inspect key diagnostic mode for each channel.

      • 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 buzzer sounds.
      Result
      Proceed to
      OK
      NG

    OK

    REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

    NG

  6. CHECK HARNESS AND CONNECTOR (CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) - ELECTRICAL KEY ANTENNA (OUTSIDE LUGGAGE COMPARTMENT))


    1. Disconnect the K136 certification ECU (smart key ECU assembly) connector.

    2. Disconnect the Q4 electrical key antenna (outside luggage compartment) connector.

    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance
      Tester Connection Condition Specified Condition
      K136-2 (CLG8) - Q4-2 (ANTE8) Always Below 1 Ω
      K136-1 (CG8B) - Q4-1 (CLGB) Always Below 1 Ω
      K136-2 (CLG8) or Q4-2 (ANTE8) - Body ground Always 10 kΩ or higher
      K136-1 (CG8B) or Q4-1 (CLGB) - Body ground Always 10 kΩ or higher

    4. Reconnect the K136 certification ECU (smart key ECU assembly) connector.

    5. Reconnect the Q4 electrical key antenna (outside luggage compartment) connector.

      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  7. CHECK CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) (OUTPUT TO ELECTRICAL KEY ANTENNA (OUTSIDE LUGGAGE COMPARTMENT))

    A0022WSC41
    *a

    Component with harness connected

    (Certification ECU (Smart Key ECU Assembly))

    		 *b Waveform 1

    1. Using an oscilloscope, check the waveform.

      OK
      Tester Connection Condition Tool Setting Specified Condition
      K136-2 (CLG8) - K137-11 (E)

      Procedure:


      1. Power switch off

      2. Electrical key transmitter sub-assembly brought outside vehicle

      3. All doors closed

      4. Luggage electrical key switch off → on

      		 2 V/DIV., 500 ms/DIV.

      Pulse generation

      (See waveform 1)
      K136-1 (CG8B) - K137-11 (E)

      Procedure:


      1. Power switch off

      2. Electrical key transmitter sub-assembly brought outside vehicle

      3. All doors closed

      4. Luggage electrical key switch off → on

      		 2 V/DIV., 500 ms/DIV.

      Pulse generation

      (See waveform 1)
      Result
      Proceed to
      OK
      NG

    NG

    REPLACE ELECTRICAL KEY ANTENNA (OUTSIDE LUGGAGE COMPARTMENT) Click here

    OK

  8. CHECK ENTRY LUGGAGE COMPARTMENT OPEN OPERATION


    1. Connect all connectors and check that the entry luggage compartment open function operates.

      Click here

      Result
      Result Proceed to
      Luggage open function operates normally A
      Luggage open function does not operate normally B

    A

    END (CONNECTOR WAS NOT CONNECTED SECURELY)

    B

    REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

  9. INSPECT LUGGAGE ELECTRICAL KEY SWITCH


    1. Remove the luggage electrical key switch.

      Click here

    2. Inspect the luggage electrical key switch.

      Click here

      Result
      Proceed to
      OK
      NG

    NG

    REPLACE LUGGAGE ELECTRICAL KEY SWITCH Click here

    OK

  10. CHECK HARNESS AND CONNECTOR (CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) - LUGGAGE ELECTRICAL KEY SWITCH)


    1. Disconnect the K136 certification ECU (smart key ECU assembly) connector.

    2. Disconnect the Q48 luggage electrical key switch connector.

    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance
      Tester Connection Condition Specified Condition
      K136-5 (TSW5) - Q48-2 (UL) Always Below 1 Ω
      Q48-1 (E) - Body ground Always Below 1 Ω
      K136-5 (TSW5) or Q48-2 (UL) - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  11. CHECK ENTRY LUGGAGE COMPARTMENT OPEN OPERATION


    1. Connect all connectors and check that the entry luggage compartment open function operates.

      Click here

      Result
      Result Proceed to
      Luggage open function operates normally A
      Luggage open function does not operate normally B

    A

    END (CONNECTOR WAS NOT CONNECTED SECURELY)

    B

    REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)