ENTRY AND START SYSTEM(for Entry Function) Driver Side Door Entry Unlock Function does not Operate

DESCRIPTION

If the entry unlock function does not operate for the driver door only, but the entry lock function operates, the request code is being transmitted properly from the driver door. In this case, there may be a problem related to the driver door lock position switch system.

WIRING DIAGRAM

B0025X3E04

CAUTION / NOTICE / HINT

Note


  • The 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 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 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 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".

  • w/ Door Control Battery:

    As the door control battery is installed between the vehicle battery and body ECU, first perform the inspections to confirm that there are no malfunctions in the power source circuit for the body ECU before performing this troubleshooting procedure.

    Click here

  • w/ Automatic Light Control System:

    If the body ECU has been replaced, it is necessary to initialize the body ECU.

    Click here

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

      Tech Tips

      Disconnect and reconnect the connectors of certification ECU (smart key ECU assembly), body ECU and door lock assembly before performing the inspection.

      OK
      Door locks operate normally.
      Result
      Proceed to
      OK
      NG

    NG

    GO TO POWER DOOR LOCK CONTROL SYSTEM Click here

    OK

  2. INSPECT FRONT DOOR LOCK ASSEMBLY (FOR DRIVER DOOR) (LOCK POSITION SWITCH)


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

      Click here

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

      Click here

      Result
      Proceed to
      OK
      NG

    NG

    REPLACE FRONT DOOR LOCK ASSEMBLY (FOR DRIVER DOOR) Click here

    OK

  3. CHECK HARNESS AND CONNECTOR (FRONT DOOR LOCK ASSEMBLY (FOR DRIVER DOOR) - BODY ECU AND BODY GROUND)


    1. Disconnect the K1*1 or J1*2 front door lock assembly (for Driver Door) connector.


      • *1: for LHD

      • *2: for RHD

    2. Disconnect the G27 body ECU connector.

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

      Standard Resistance
      for LHD
      Tester Connection Condition Specified Condition
      K1-8 (LSSR) - G27-15 (LSWD) Always Below 1 Ω
      K1-7 (E) - Body ground Always Below 1 Ω
      K1-8 (LSSR) or G27-15 (LSWD) - Body ground Always 10 kΩ or higher
      for RHD
      Tester Connection Condition Specified Condition
      J1-7 (LSSR) - G27-15 (LSWD) Always Below 1 Ω
      J1-8 (E) - Body ground Always Below 1 Ω
      J1-7 (LSSR) or G27-15 (LSWD) - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  4. CHECK ENTRY DOOR LOCK OPERATION


    1. Check the entry lock/unlock operation.

      Click here

      Tech Tips

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

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

    OK

    END (CONNECTOR WAS NOT CONNECTED PROPERLY)

    NG

  5. REPLACE BODY ECU


    1. Replace the body ECU with a new or known good one.


      Result
      Proceed to
      NEXT

    NEXT

  6. CHECK ENTRY DOOR LOCK OPERATION


    1. Check the entry lock/unlock operation.

      Click here

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

    OK

    END (BODY ECU WAS DEFECTIVE)

    NG

    REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)