SMART KEY SYSTEM (for Entry Function) Luggage Compartment Door Entry Unlock Function does not Operate when Key is Outside Luggage Compartment

DESCRIPTION

If the luggage compartment door entry unlock function does not operate, the request code may not be being transmitted from the luggage compartment door. If the entry functions for other doors operate properly, communication between the electrical key transmitter sub-assembly and door control receiver is normal. In this case, there may be a problem with request code transmission (communication between the certification ECU (smart key ECU assembly) and electrical key antenna (outside luggage)), a luggage compartment door outer switch malfunction or wave interference.

Tech Tips

  • If the luggage compartment door open functions does not operate, the cause of the malfunction may be stored in the certification ECU (smart key ECU assembly) Click here.

  • If the cause of the malfunction is stored in the certification ECU (smart key ECU assembly), the following table is helpful in checking whether or not the malfunction was caused by wave interference.

Radio Wave Interference:
Parameter Name Cause of Problem and Countermeasure
Operating Trunk Switch / Key RF Signal Interference

When entry trunk operation was performed, the electrical key transmitter sub-assembly could not be confirmed due to wave interference. Therefore, the output frequency was switched to the other channel (changed from channel 1 to channel 2 or from channel 2 to channel 1).

If the cause of the malfunction has not been stored but the car has been moved and a luggage compartment door open function has been successfully performed, the possibility of wave interference is high.

WIRING DIAGRAM

A011QX4E10

INSPECTION PROCEDURE

Note

  • The smart key system (for Entry Function) uses the CAN communication system and LIN communication system. First inspect the communication systems by following How to Proceed with Troubleshooting Click here. Troubleshoot the smart key system (for Entry Function) after confirming that the communication systems are functioning properly.

  • When using the Techstream with the engine switch off to troubleshoot:

    Connect the Techstream to the DLC3 and turn a courtesy light switch on and off at 1.5-second intervals until communication between the Techstream and vehicle begins.

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

  • Before performing the inspection, check that DTC B1242 (wireless door lock control) is not output Click here.

  • Before replacing the certification ECU (smart key ECU assembly), refer to the smart key system (for Entry Function) precaution Click here.

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

PROCEDURE

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

    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 Key / Data List.

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

      Smart Key
      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      Trunk Open Mode Luggage door opening switch assembly / ON or OFF Customization status displayed -
      Result
      Result Proceed to
      Entry luggage compartment door open mode is ON A
      Entry luggage compartment door open mode is OFF B
    B
    A
  2. READ VALUE USING TECHSTREAM (LUGGAGE DOOR OPENING SWITCH ASSEMBLY)

    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 Key / Data List.

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

      Smart Key
      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      Tr/B-Door Unlock SW Luggage compartment door opener outer switch / ON or OFF

      ON: Luggage compartment door opener outer switch pushed

      OFF: Luggage compartment door opener outer switch not pushed

      -
      OK
      On the Techstream screen, the display changes between ON and OFF according to the chart above.
    NG
    OK
  3. PERFORM ACTIVE TEST USING 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 / Main Body / Active Test.

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

      Main Body
      Tester Display Test Part Control Range Diagnostic Note
      Trunk and Back-door Open Operate luggage compartment door lock motor ON/OFF -
      OK
      Luggage compartment door lock motor operates.
    NG
    OK
  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.

      A011R44E01
      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 is not possible.

      Tech Tips

      • When pressing the luggage compartment door opener outer switch, 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.
    NG
    OK
  5. CHECK KEY DIAGNOSTIC MODE

    1. Check the following antennas in the key diagnostic mode Click here.

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

      A011R44E01
      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.

        Tech Tips

        • 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 luggage compartment exterior transmitter 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.
    NG
    OK
  6. CHECK HARNESS AND CONNECTOR (CERTIFICATION ECU - ELECTRICAL KEY ANTENNA)

    1. Disconnect the O1 certification ECU (smart key ECU assembly) connector.

    2. Disconnect the T11*1 or T14*2 outside 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
      O1-1 (CG8B) - T11-2 (CLGB)*1 Always Below 1 Ω
      O1-2 (CLG8) - T11-1 (ANTE8)*1 Always Below 1 Ω
      O1-1 (CG8B) - Body ground*1 Always 10 kΩ or higher
      O1-2 (CLG8) - Body ground*1 Always 10 kΩ or higher
      O1-1 (CG8B) - T14-2 (CLGB)*2 Always Below 1 Ω
      O1-2 (CLG8) - T14-1 (ANTE8)*2 Always Below 1 Ω
      O1-1 (CG8B) - Body ground*2 Always 10 kΩ or higher
      O1-2 (CLG8) - Body ground*2 Always 10 kΩ or higher
      • *1: w/o Blind Spot Monitor System

      • *2: w/ Blind Spot Monitor System

    NG
    OK
  7. INSPECT ELECTRICAL KEY ANTENNA (OUTSIDE LUGGAGE)

    1. Remove the outside electrical key antenna (outside luggage) Click here

      A011QVPE12
    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))

    NG
    OK
  8. INSPECT LUGGAGE DOOR OPENING SWITCH ASSEMBLY

    1. Remove the luggage door opening switch assembly Click here.

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

      A011R43E09
      Standard Resistance
      Tester Connection Switch Condition Specified Condition
      2 (E) - 3 (UL) Luggage door opening switch assembly not pushed 10 kΩ or higher
      2 (E) - 3 (UL) Luggage door opening switch assembly pushed Below 1 Ω
      Text in Illustration
      *a

      Component without harness connected

      (Luggage Door Opening Switch Assembly)

    NG
    OK
  9. CHECK HARNESS AND CONNECTOR (CERTIFICATION ECU - OPENING SWITCH)

    1. Disconnect the O1 certification ECU (smart key ECU assembly) connector.

    2. Disconnect the T4 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
      O1-27 (TSW5) - T4-3 (UL) Always Below 1 Ω
      T4-2 (E) - Body ground Always Below 1 Ω
      O1-27 (TSW5) or T4-3 (UL) - Body ground Always 10 kΩ or higher
    NG
    OK
  10. INSPECT LUGGAGE COMPARTMENT DOOR LOCK ASSEMBLY

    1. Remove the luggage compartment door lock assembly Click here.

      A011UB8E03
    2. Check the operation of the door lock motor.

      1. Move the door lock to the close (lock) position.

      2. Apply battery voltage to the door lock motor and check the operation of the door lock motor.

        OK
        Measurement Condition Specified Condition

        Battery positive (+) → 1 (B)

        Battery negative (-) → 2 (E)

        Luggage compartment door lock motor open (unlock) operation
        Text in Illustration
        *a

        Component without harness connected:

        (Luggage Compartment Door Lock Assembly)

        *b Close (Lock)
        *c Open (Unlock)
    3. Check the door courtesy light switch.

      A011UB8E01
      1. Move the door lock to the close (lock) position.

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

        Standard Resistance
        Measurement Condition Door Lock Condition Specified Condition
        2 (E) - 3 (D+) Close (Lock) 10 kΩ or higher
        2 (E) - 3 (D+) Open (Unlock) Below 1 Ω
        Text in Illustration
        *a

        Component without harness connected

        (Luggage Compartment Door Lock Assembly)

        *b Close (Lock)
        *c Open (Unlock)
    NG
    OK
  11. CHECK HARNESS AND CONNECTOR (LUGGAGE DOOR LOCK - INSTRUMENT PANEL JUNCTION BLOCK)

    1. Luggage compartment door lock motor:

      1. Disconnect the 3C instrument panel junction block assembly connector.

      2. Disconnect the T3 luggage compartment door lock assembly connector.

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

        Standard Resistance
        Tester Connection Condition Specified Condition
        T3-2 (E) - Body ground Always Below 1 Ω
        3C-10 (TR+) - T3-1 (B) Always Below 1 Ω
        3C-10 (TR+) or T3-1 (B) - Body ground Always 10 kΩ or higher
    2. Luggage door courtesy light switch:

      1. Disconnect the 3C instrument panel junction block assembly connector.

      2. Disconnect the T3 luggage compartment door lock assembly connector.

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

        Standard Resistance
        Tester Connection Condition Specified Condition
        T3-2 (E) - Body ground Always Below 1 Ω
        3C-9 (LGCY) - T3-3 (D+) Always Below 1 Ω
        3C-9 (LGCY) or T3-3 (D+) - Body ground Always 10 kΩ or higher
    NG
    OK
  12. REPLACE INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY

    1. Temporarily replace the instrument panel junction block assembly with a new one Click here.

    NEXT
  13. CHECK OPERATION

    1. Check that the luggage compartment door entry unlock functions operate normally Click here.

      OK
      Luggage compartment door entry unlock functions operate normally.
    NG
    OK