ENTRY AND START SYSTEM(for Entry Function) Back Door Entry Lock and Unlock Functions do not Operate

DTC Code DTC Name
Back Door Entry Lock and Unlock Functions do not Operate

DESCRIPTION

If the entry lock and open functions do not operate for the back door only, the request code may not be being transmitted from the No. 3 indoor electrical key antenna assembly (back door), or the glass hatch opener switch assembly or glass hatch lock switch assembly may be malfunctioning. If the wireless door lock functions operate properly, communication between the electrical key transmitter sub-assembly and certification ECU (smart key ECU assembly) is normal. In this case, there may be a problem with request code transmission (communication between the certification ECU (smart key ECU assembly) and No. 3 indoor electrical key antenna assembly (back door)), or there may be wave interference.

WIRING DIAGRAM

B361593E03

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 engine 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 performing the inspection, check that DTC B1242 (wireless door lock control) or B27B0 is not output.

  • 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. CHECK POWER DOOR LOCK CONTROL SYSTEM

    1. When the door control switch is operated, check that the doors unlock and lock according to the switch operation.

      Click here

      OK

      Door locks operate normally.

    Result

    Proceed to

    OK

    NG
    NG

    GO TO POWER DOOR LOCK CONTROL SYSTEM

    Click here

    OK

  2. CHECK DTC OUTPUT

    1. Check the DTCs.

      Body Electrical > Entry&Start > Trouble Codes

      OK

      DTC B27A8 is not output.

    Result

    Proceed to

    OK

    NG
    NG

    GO TO DTC B27A8

    Click here

    OK

  3. CHECK WAVE ENVIRONMENT

    1. B361569C01

      *a

      Approximately 0.3 m (0.984 ft.)

      Bring the electrical key transmitter sub-assembly approximately 0.3 m (0.984 ft.) from the No. 3 electrical key antenna assembly (back door) and perform an entry back door open/lock function check.

      Click hereClick here

      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.

      Tip:

      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.

    Result

    Result

    Proceed to

    Entry function does not operate normally

    A

    Entry function operates normally

    B
    B

    AFFECTED BY WAVE INTERFERENCE

    A

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

    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.

      Body Electrical > Entry&Start > Data List

      Tester Display

      Measurement Item

      Range

      Normal Condition

      Diagnostic Note

      Tr/B-Door Unlock SW

      Glass hatch opener switch assembly

      ON or OFF

      ON: Glass hatch opener switch assembly pushed

      OFF: Glass hatch opener switch assembly not pushed

      • Displays whether the glass hatch opener switch assembly is on or off.

      • Use this Data List item to help determine if there is a switch malfunction when the back door open function does not operate.

      Body Electrical > Entry&Start > Data List

      Tester Display

      Tr/B-Door Unlock SW

      OK

      On the GTS screen, the display changes between ON and OFF as shown in the table above.

    Result

    Proceed to

    OK

    NG
    NG

    CHECK HARNESS AND CONNECTOR (CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) - GLASS HATCH OPENER SWITCH ASSEMBLY)Click here

    OK

  5. READ VALUE USING GTS (TR/B-DOOR LOCK SW)

    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.

      Body Electrical > Entry&Start > Data List

      Tester Display

      Measurement Item

      Range

      Normal Condition

      Diagnostic Note

      Tr/B-Door Lock SW

      Glass hatch lock switch assembly

      ON or OFF

      ON: Glass hatch lock switch assembly pushed

      OFF: Glass hatch lock switch assembly not pushed

      • Displays whether the glass hatch lock switch assembly is on or off.

      • Use this Data List item to help determine if there is a switch malfunction when the back door open function does not operate.

      Body Electrical > Entry&Start > Data List

      Tester Display

      Tr/B-Door Lock SW

      OK

      The GTS display changes correctly in response to the operation of the glass hatch opener switch assembly.

    Result

    Proceed to

    OK

    NG
    NG

    CHECK HARNESS AND CONNECTOR (CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) - GLASS HATCH LOCK SWITCH ASSEMBLY)Click here

    OK

  6. CHECK KEY DIAGNOSTIC MODE

    1. Check the following antennas in key diagnostic mode.

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

      Tip:

      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.

      1. B361569C01

        *a

        0.7 to 1 m (2.30 to 3.28 ft.)

        Check the No. 3 indoor electrical key antenna assembly (back door):

        When the electrical key transmitter sub-assembly is brought within 0.7 to 1 m (2.30 to 3.28 ft.) of the No. 3 indoor electrical key antenna assembly (back door), check that the wireless door lock buzzer sounds.

        Body Electrical > Entry&Start > Utility

        Tester Display

        Communication Check(Key Diag Mode)

    Result

    Result

    Proceed to

    Wireless door lock buzzer does not sound

    A

    Wireless door lock buzzer sounds

    B
    B

    REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

    A

  7. CHECK HARNESS AND CONNECTOR (CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) - NO. 3 INDOOR ELECTRICAL KEY ANTENNA ASSEMBLY (BACK DOOR))

    1. Disconnect the E50 certification ECU (smart key ECU assembly) connector.

    2. Disconnect the O4 No. 3 indoor electrical key antenna assembly (back door) connector.

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

      Standard Resistance

      Tester Connection

      Condition

      Specified Condition

      E50-8 (CLG8) - O4-1 (ANTE8)

      Always

      Below 1 Ω

      E50-24 (CG8B) - O4-3 (CLGB)

      Always

      Below 1 Ω

      E50-8 (CLG8) or O4-1 (ANTE8) - Body ground

      Always

      10 kΩ or higher

      E50-24 (CG8B) or O4-3 (CLGB) - Body ground

      Always

      10 kΩ or higher

    Result

    Proceed to

    OK

    NG
    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  8. CHECK CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) (OUTPUT TO NO. 3 INDOOR ELECTRICAL KEY ANTENNA ASSEMBLY (BACK DOOR))

    1. Reconnect the E50 certification ECU (smart key ECU assembly) connector.

    2. Reconnect the O4 No. 3 indoor electrical key antenna assembly (back door) connector.

    3. Using an oscilloscope, check the waveform.

      B345002C33

      *a

      Component with harness connected

      (No. 3 Indoor Electrical Key Antenna Assembly (back door))

      *b

      Waveform 1

      *c

      Glass hatch lock switch assembly on

      -

      -

      OK

      Tester Connection

      Condition

      Tool Setting

      Specified Condition

      O4-1 (ANTE8) - O4-3 (CLGB)

      Procedure:

      1. Engine switch off

      2. All doors closed

      -

      No pulse generation

      Procedure:

      1. Engine switch off

      2. All doors closed

      3. Glass hatch opener switch assembly off → on

      2 V/DIV., 500 ms./DIV.

      Pulse generation

      (See waveform 1)

    Result

    Proceed to

    OK

    NG
    OK

    REPLACE NO. 3 INDOOR ELECTRICAL KEY ANTENNA ASSEMBLY (BACK DOOR)

    Click here

    NG

  9. CHECK ENTRY BACK DOOR OPERATION

    1. Reconnect all connectors.

    2. Check the operation of the entry back door lock and open functions.

      Click hereClick here

      OK

      Entry back door lock and open functions operate normally.

    Result

    Proceed to

    OK

    NG
    OK

    END (CONNECTOR WAS NOT CONNECTED SECURELY)

    NG

    REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

  10. CHECK HARNESS AND CONNECTOR (CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) - GLASS HATCH LOCK SWITCH ASSEMBLY)

    1. Disconnect the E49 certification ECU (smart key ECU assembly) connector.

    2. Disconnect the K4 glass hatch lock switch assembly connector.

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

      Standard Resistance

      Tester Connection

      Condition

      Specified Condition

      E49-23 (TSW6) - K4-2 (SDN)

      Always

      Below 1 Ω

      K4-1 (E3) - Body ground

      Always

      Below 1 Ω

      E49-23 (TSW6) or K4-2 (SDN) - Body ground

      Always

      10 kΩ or higher

    Result

    Proceed to

    OK

    NG
    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  11. INSPECT GLASS HATCH LOCK SWITCH ASSEMBLY

    1. Remove the glass hatch lock switch assembly.

      Click here

    2. Inspect the glass hatch lock switch assembly.

      Click here

    Result

    Proceed to

    OK

    NG
    NG

    REPLACE GLASS HATCH LOCK SWITCH ASSEMBLY

    Click here

    OK

  12. CHECK ENTRY BACK DOOR LOCK OPERATION

    1. Reconnect all connectors.

    2. Check the operation of the entry back door lock and open functions.

      Click hereClick here

      OK

      Entry back door lock and open functions operate normally.

    Result

    Proceed to

    OK

    NG
    OK

    END (CONNECTOR WAS NOT CONNECTED SECURELY)

    NG

    REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

  13. CHECK HARNESS AND CONNECTOR (CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) - GLASS HATCH OPENER SWITCH ASSEMBLY)

    1. Disconnect the E49 certification ECU (smart key ECU assembly) connector.

    2. Disconnect the O5 glass hatch opener switch assembly connector.

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

      Standard Resistance

      Tester Connection

      Condition

      Specified Condition

      E49-14 (TSW5) - O5-1 (UL)

      Always

      Below 1 Ω

      O5-2 (E) - Body ground

      Always

      Below 1 Ω

      E49-14 (TSW5) or O5-1 (UL) - Body ground

      Always

      10 kΩ or higher

    Result

    Proceed to

    OK

    NG
    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  14. INSPECT GLASS HATCH OPENER SWITCH ASSEMBLY

    1. Remove the glass hatch opener switch assembly.

      Click here

    2. Inspect the glass hatch opener switch assembly.

      Click here

    Result

    Proceed to

    OK

    NG
    NG

    REPLACE GLASS HATCH OPENER SWITCH ASSEMBLY

    Click here

    OK

  15. CHECK ENTRY BACK DOOR LOCK OPERATION

    1. Reconnect all connectors.

    2. Check the operation of the entry back door lock and open functions.

      Click hereClick here

      OK

      Entry back door lock and open functions operate normally.

    Result

    Proceed to

    OK

    NG
    OK

    END (CONNECTOR WAS NOT CONNECTED SECURELY)

    NG

    REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)