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 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 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

A01FEOTE02
A01FEOTE03

INSPECTION PROCEDURE

Note


  • The entry and start 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 entry and start system (for Entry Function) after confirming that the communication systems are functioning properly.

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

    Connect the GTS to the DLC3 and turn a courtesy light switch on and off at 1.5-second intervals until communication between the GTS 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 entry and start 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 GTS (LUGGAGE COMPARTMENT DOOR OPEN MODE)


    1. Connect the GTS to the DLC3.

    2. Turn the engine 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.

      Entry & Start
      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

    PERFORM CUSTOMIZE SETTING (Proceed to Customize Parameters) Click here

    A

  2. READ VALUE USING GTS (LUGGAGE DOOR OPENING SWITCH ASSEMBLY)


    1. Connect the GTS to the DLC3.

    2. Turn the engine 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.

      Entry & Start
      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 GTS screen, the display changes between ON and OFF according to the chart above.

    NG

    INSPECT LUGGAGE ELECTRICAL KEY SWITCH Click here

    OK

  3. PERFORM ACTIVE TEST USING GTS


    1. Connect the GTS to the DLC3.

    2. Turn the engine switch on (IG).

    3. Turn the GTS on.

    4. Enter the following menus: Body Electrical / (desired system) / Active Test.

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

      Back Door (w/ Power Trunk Lid System)
      Tester Display Test Part Control Range Diagnostic Note
      Latch Release Operate luggage compartment door latch release ON or OFF -
      Main Body (w/o Power Trunk Lid System)
      Tester Display Test Part Control Range Diagnostic Note
      Trunk and Back-Door Open Operate luggage compartment door latch release ON or OFF -
      OK
      Luggage compartment door lock motor operates.

    NG

    GO TO LUGGAGE COMPARTMENT DOOR OPENER SYSTEM Click here

    OK

  4. CHECK WAVE ENVIRONMENT


    1. A01FEDXE01
      Text in Illustration
      *a Approximately 0.3 m (0.984 ft.)

      Bring the electrical key transmitter sub-assembly near the electrical key antenna (outside luggage), and perform an entry luggage compartment open function check.

      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

    CHECK KEY DIAGNOSTIC MODE Click here

    OK

    AFFECTED BY WAVE INTERFERENCE

  5. CHECK KEY DIAGNOSTIC MODE


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

    2. A01FEDXE01
      Text in Illustration
      *a 0.7 to 1.0 m (2.30 to 3.28 ft.)

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


      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

    CHECK HARNESS AND CONNECTOR (CERTIFICATION ECU - ELECTRICAL KEY ANTENNA) Click here

    OK

    REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

  6. CHECK HARNESS AND CONNECTOR (CERTIFICATION ECU - ELECTRICAL KEY ANTENNA)


    1. Disconnect the T2*1 or U2*2 certification ECU (smart key ECU assembly) connector.


      • *1: for LHD

      • *2: for RHD

    2. Disconnect the T38 outside electrical key antenna (outside luggage) connector.

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

      Standard Resistance
      for LHD
      Tester Connection Condition Specified Condition
      T2-1 (CG8B) - T38-2 (CLGB) Always Below 1 Ω
      T2-2 (CLG8) - T38-1 (ANTE8) Always Below 1 Ω
      T2-1 (CG8B) - Body ground Always 10 kΩ or higher
      T2-2 (CLG8) - Body ground Always 10 kΩ or higher
      for RHD
      Tester Connection Condition Specified Condition
      U2-1 (CG8B) - T38-2 (CLGB) Always Below 1 Ω
      U2-2 (CLG8) - T38-1 (ANTE8) Always Below 1 Ω
      U2-1 (CG8B) - Body ground Always 10 kΩ or higher
      U2-2 (CLG8) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  7. INSPECT ELECTRICAL KEY ANTENNA (OUTSIDE LUGGAGE)


    1. A01FHPPE23
      Text in Illustration
      *a

      Component without harness connected

      (Electrical Key Antenna [Outside Luggage])

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

    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

    NG

    REPLACE ELECTRICAL KEY ANTENNA (OUTSIDE LUGGAGE) Click here

    OK

    REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

  8. INSPECT LUGGAGE ELECTRICAL KEY SWITCH


    1. Remove the luggage electrical key switch Click here.

    2. A01FDLJE02
      Text in Illustration
      *a

      Component without harness connected

      (Luggage Electrical Key Switch)

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

      Standard Resistance
      Tester Connection Switch Condition Specified Condition
      1 - 2 Luggage electrical key switch not pushed 10 kΩ or higher
      1 - 2 Luggage electrical key switch pushed Below 1 Ω

    NG

    REPLACE LUGGAGE ELECTRICAL KEY SWITCH Click here

    OK

  9. CHECK HARNESS AND CONNECTOR (CERTIFICATION ECU - LUGGAGE ELECTRICAL KEY SWITCH AND BODY GROUND)


    1. Disconnect the T2*1 or U2*2 certification ECU (smart key ECU assembly) connector.


      • *1: for LHD

      • *2: for RHD

    2. Disconnect the a7 luggage electrical key switch connector.

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

      Standard Resistance
      for LHD
      Tester Connection Condition Specified Condition
      T2-27 (TSW5) - a7-2 Always Below 1 Ω
      a7-1 - Body ground Always Below 1 Ω
      T2-27 (TSW5) or a7-2- Body ground Always 10 kΩ or higher
      for RHD
      Tester Connection Condition Specified Condition
      U2-27 (TSW5) - a7-2 Always Below 1 Ω
      a7-1 - Body ground Always Below 1 Ω
      U2-27 (TSW5) or a7-2 - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

    REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)