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

DESCRIPTION

If the entry lock and unlock functions do not operate for the driver door only, the request code may not be being transmitted from the front door outside handle assembly (for driver door). If the entry functions for other doors 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 front door outside handle assembly (for Driver Door)), or there may be wave interference.

WIRING DIAGRAM

B003OEGE01

CAUTION / NOTICE / HINT

Note


  • The smart entry and start system (for Entry Function) uses a multiplex communication system (LIN communication system) and the CAN communication system. Inspect the communication function by following How to Proceed with Troubleshooting.

    Click here

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

  • When using the GTS with the vehicle engine switch off, connect the GTS to the vehicle 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 the 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 the smart 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".

Tech Tips


  • If the driver door entry lock and unlock functions do not operate, the cause of the malfunction may be stored in the certification ECU (smart key ECU assembly).

  • If the cause of the malfunction is stored in the certification ECU (smart key ECU assembly), the following table is helpful in checking whether the malfunction was caused by wave interference.


Body Electrical > Entry&Start > Utility
Tester Display
Operation History
Radio Wave Interference
Parameter Name Cause of Problem and Countermeasure
Lock / Key RF Signal Interference

When entry lock operation was performed, the electrical key transmitter sub-assembly could not be confirmed due to wave interference.

If the cause of the malfunction has not been stored but the vehicle has been moved and an entry lock operation has been successfully performed, the possibility of wave interference is high.
Unlock / Key RF Signal Interference

When entry unlock operation was performed, the electrical key transmitter sub-assembly could not be confirmed due to wave interference.

If the cause of the malfunction has not been stored but the vehicle has been moved and an entry unlock operation has been successfully performed, the possibility of wave interference is high.

PROCEDURE


  1. CHECK POWER DOOR LOCK CONTROL SYSTEM


    1. When the door control switch on the power window master 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 FOR DTC


    1. Check the DTCs.

      Click here


      Body Electrical > Entry&Start > Trouble Codes
      OK
      DTC B27A1 is not output.
      Result
      Result Proceed to
      DTC B27A1 is not output. A
      DTC B27A1 is output. B

    B

    GO TO DTC B27A1 Click here

    A

  3. CHECK WAVE ENVIRONMENT


    1. B003QJRC01
      *a Approximately 0.3 m (0.984 ft.)

      Bring the electrical key transmitter sub-assembly approximately 0.3 m (0.984 ft.) from the front door outside handle assembly (for Driver Door) and perform an entry function check.

      Click here

      Note

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

      Tech Tips

      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 (D-DOOR TRIGGER SWITCH)


    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. According to the display on the GTS, read the Data List.


      Body Electrical > Entry&Start > Data List
      Tester Display Measurement Item Range Normal Condition Diagnostic Note
      D-Door Trigger Switch Driver door trigger switch ON or OFF

      ON: Driver door trigger switch pressed

      OFF: Driver door trigger switch not pressed

      • Displays whether the trigger switch is on or off (even if the trigger switch is pressed and contact is maintained, "ON" is displayed only momentarily).

      • Use this Data List item to help determine if there is a trigger switch malfunction when the entry lock function does not operate.

      Body Electrical > Entry&Start > Data List
      Tester Display
      D-Door Trigger Switch
      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 (FRONT DOOR OUTSIDE HANDLE ASSEMBLY (FOR DRIVER DOOR) - CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) AND BODY GROUND) Click here

    OK

  5. CHECK KEY DIAGNOSTIC MODE

    B003QJRC01
    *a 0.7 to 1 m (2.30 to 3.28 ft.)

    1. Check the following antennas in key diagnostic mode.

      Click here

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

      Tech Tips

      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. Check the front door outside handle assembly (for Driver Door):

        When the electrical key transmitter sub-assembly is brought within 0.7 to 1 m (2.30 to 3.28 ft.) of the front door outside handle assembly (for Driver Door), check that the wireless door lock buzzer sounds.


        Body Electrical > Entry&Start > Utility
        Tester Display
        Communication Check(Key Diag Mode)
        OK
        Wireless door lock 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) - FRONT DOOR OUTSIDE HANDLE ASSEMBLY (FOR DRIVER DOOR))


    1. Disconnect the G17 certification ECU (smart key ECU assembly) connector.

    2. Disconnect the J7 front door outside handle assembly (for Driver Door) connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      G17-9 (CLG5) - J7-3 (ANT1) Always Below 1 Ω
      G17-25 (CG5B) - J7-6 (ANT2) Always Below 1 Ω
      G17-9 (CLG5) or J7-3 (ANT1) - Body ground Always 10 kΩ or higher
      G17-25 (CG5B) or J7-6 (ANT2) - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  7. CHECK CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) (OUTPUT TO FRONT DOOR OUTSIDE HANDLE ASSEMBLY (FOR DRIVER DOOR))


    1. Connect the J7 front door outside handle assembly (for Driver Door) connector.

    2. Connect the G17 certification ECU (smart key ECU assembly) connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      G16-10 (E) - Body ground Always Below 1 Ω

    4. Using an oscilloscope, check the waveform.

      B003PSAC01
      *a

      Component with harness connected

      (Certification ECU (Smart Key ECU Assembly))

      		 *b Waveform 1
      *c Trigger switch ON - -
      OK
      Tester Connection Condition Tool Setting Specified Condition
      G17-9 (CLG5) - G16-10 (E)

      Procedure:


      1. Engine switch off

      2. All doors closed

      		 - Not pulse generation

      Procedure:


      1. Engine switch off

      2. All doors closed

      3. While carrying the electrical key transmitter sub-assembly, press the trigger switch on the front door outside handle assembly (for Driver Door).

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

      Pulse generation

      (See waveform 1)
      G17-25 (CG5B) - G16-10 (E)

      Procedure:


      1. Engine switch off

      2. All doors closed

      		 - Not pulse generation

      Procedure:


      1. Engine switch off

      2. All doors closed

      3. While carrying the electrical key transmitter sub-assembly, press the trigger switch on the front door outside handle assembly (for Driver Door).

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

      Pulse generation

      (See waveform 1)
      Result
      Proceed to
      OK
      NG

    OK

    REPLACE FRONT DOOR OUTSIDE HANDLE ASSEMBLY (FOR DRIVER DOOR) Click here

    NG

    GO TO STEP 10 Click here

  8. CHECK HARNESS AND CONNECTOR (FRONT DOOR OUTSIDE HANDLE ASSEMBLY (FOR DRIVER DOOR) - CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) AND BODY GROUND)


    1. Disconnect the J7 front door outside handle assembly (for Driver Door) connector.

    2. Disconnect the G16 certification ECU (smart key ECU assembly) connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      J7-1 (TRG+) - G16-4 (TSW1) Always Below 1 Ω
      J7-4 (TRG-) - Body ground Always Below 1 Ω
      J7-1 (TRG+) or G16-4 (TSW1) - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  9. INSPECT FRONT DOOR OUTSIDE HANDLE ASSEMBLY (FOR DRIVER DOOR)


    1. Remove the front door outside handle assembly (for Driver Door).

      Click here

    2. Inspect the front door outside handle assembly (for Driver Door).

      Click here

      Result
      Proceed to
      OK
      NG

    NG

    REPLACE FRONT DOOR OUTSIDE HANDLE ASSEMBLY (FOR DRIVER DOOR) Click here

    OK

  10. CHECK ENTRY DOOR LOCK OPERATION


    1. Check the operation of the entry lock/unlock function.

      Click here

      Tech Tips

      Disconnect and reconnect the connectors of certification ECU (smart key ECU assembly) and front door outside handle assembly (for Driver Door) before performing the inspection.

      OK
      Entry lock/unlock operate normally.
      Result
      Proceed to
      OK
      NG

    OK

    END (CONNECT CONNECTORS PROPERLY)

    NG

    REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)