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

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DTC Code DTC Name
  Driver Side Door Entry Unlock Function does not Operate
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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 unlock sensor (connection between the certification ECU (smart key ECU assembly) and front door outside handle assembly (for Driver Door)).

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WIRING DIAGRAM

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CAUTION / NOTICE / HINT

Note:

  • When using the GTS with the power 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. 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.

  • 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.

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  • Before replacing the certification ECU (smart key ECU assembly), refer to Service Bulletin.

  • After repair, confirm that no DTCs are output.

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

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PROCEDURE


  1. Click here

    CHECK POWER DOOR LOCK CONTROL SYSTEM


    1. When the door control switch on the multiplex network master switch assembly is operated, check that the doors unlock and lock according to the switch operation.

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      OK
      Door locks operate normally.
      Result
      Proceed to
      OK
      NG

  2. Click here

    READ VALUE USING GTS (FR DOOR LOCK POS, FL DOOR LOCK POS)


    1. Connect the GTS to the DLC3.

    2. Turn the power switch on (IG).

    3. Turn the GTS on.

    4. Enter the following menus: Body Electrical / Main Body / Data List.

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


      1. Body Electrical > Main Body > Data List
        Tester Display Measurement Item Range Normal Condition Diagnostic Note
        FR Door Lock Pos Front door RH unlock detection switch signal*2 UNLOCK or LOCK

        UNLOCK: Front door RH unlocked

        LOCK: Front door RH locked

        		 -
        FL Door Lock Pos Front door LH unlock detection switch signal*1 UNLOCK or LOCK

        UNLOCK: Front door LH unlocked

        LOCK: Front door LH locked

        		 -




      • *1: for LHD

      • *2: for RHD


      1. Body Electrical > Main Body > Data List
        Tester Display
        FR Door Lock Pos
        FL Door Lock Pos





      OK
      The GTS display changes correctly in response to the lock/unlock operation of the driver door.
      Result
      Proceed to
      OK
      NG

  3. Click here

    READ VALUE USING GTS (D-DOOR TOUCH SENSOR)


    1. Figure 2. for RHD: B004RGRC01
      *a Unlock Sensor (Backside)
      Figure 1. for LHD: B004RCZC01
      *a Unlock Sensor (Backside)

      Turn the power switch off.

    2. Open and close the driver door.

    3. With the electrical key transmitter sub-assembly outside of the vehicle, press the lock switch of the electrical key transmitter sub-assembly to lock all of the doors.

    4. Hold the electrical key transmitter sub-assembly at the same height as the door outside handle assembly and approximately 0.3 m (0.984 ft.) from the driver door.

    5. Check that the LED of the electrical key transmitter sub-assembly blinks.

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

    7. Touch the unlock sensor on the backside of the front door outside handle assembly (for Driver Door).

      Tip:

      When checking the operation of the unlock sensor again, make sure to perform the procedure from step (a).


      1. Body Electrical > Entry&Start > Data List
        Tester Display Measurement Item Range Normal Condition Diagnostic Note
        D-Door Touch Sensor Driver door touch sensor (unlock sensor) OFF or ON

        OFF: Driver door touch sensor (unlock sensor) not touched

        ON: Driver door touch sensor (unlock sensor) touched

        • Displays whether the unlock sensor is on or off (even if the sensor is touched and contact is maintained, "ON" is displayed only momentarily).

        • Use this Data List item to help determine if there is an unlock sensor malfunction when the entry unlock function does not operate.



      1. Body Electrical > Entry&Start > Data List
        Tester Display
        D-Door Touch Sensor




      OK
      The GTS display changes correctly in response to the operation of the front door outside handle assembly (for Driver Door).
      Result
      Proceed to
      OK
      NG

    • OK

      REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

    • NGClick here
  4. Click here

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


    1. Disconnect the L31 certification ECU (smart key ECU assembly) connector.

    2. Disconnect the H25*1 or H7*2 front door outside handle assembly (for Driver Door) connector.


      • *1: for LHD

      • *2: for RHD

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

      Standard Resistance
      Table 1. for LHD:
      Tester Connection Condition Specified Condition
      L31-17 (CLG1) - H25-4 (ANT1) Always Below 1 Ω
      L31-16 (CG1B) - H25-5 (ANT2) Always Below 1 Ω
      L31-17 (CLG1) or H25-4 (ANT1) - Other terminals and body ground Always 10 kΩ or higher
      L31-16 (CG1B) or H25-5 (ANT2) - Other terminals and body ground Always 10 kΩ or higher
      Table 2. for RHD:
      Tester Connection Condition Specified Condition
      L31-17 (CLG1) - H7-4 (ANT1) Always Below 1 Ω
      L31-16 (CG1B) - H7-5 (ANT2) Always Below 1 Ω
      L31-17 (CLG1) or H7-4 (ANT1) - Other terminals and body ground Always 10 kΩ or higher
      L31-16 (CG1B) or H7-5 (ANT2) - Other terminals and body ground Always 10 kΩ or higher

    4. Reconnect the H25*1 or H7*2 front door outside handle assembly (for Driver Door) connector.


      • *1: for LHD

      • *2: for RHD

    5. Reconnect the L31 certification ECU (smart key ECU assembly) connector.

      Result
      Proceed to
      OK
      NG

    • OKClick here
    • NG

      REPAIR OR REPLACE HARNESS OR CONNECTOR

  5. *a Component with harness connected (Certification ECU (Smart Key ECU Assembly)) *b Waveform 1 *c Unlock sensor not touched *d Unlock sensor touched
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    CHECK FRONT DOOR OUTSIDE HANDLE ASSEMBLY (FOR DRIVER DOOR) (INPUT TO DRIVER DOOR UNLOCK SENSOR)


    1. Using an oscilloscope, check the waveform.

      OK
      Tester Connection Condition Tool Setting Specified Condition
      L31-17 (CLG1) - G71-18 (E)

      Procedure:


      1. Power switch off

      2. Electrical key transmitter sub-assembly brought outside vehicle

      3. All doors locked

      4. Electrical key transmitter sub-assembly not near the vehicle

      5. Driver door unlock sensor touched

      		 5 V/DIV., 50 ms/DIV.

      Pulse generation

      (See waveform 1)
      Result
      Proceed to
      OK
      NG

    • OK

      REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

    • NG

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