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

DTC Code DTC Name
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 touch sensor (connection between the certification ECU (smart key ECU assembly) and front door outside handle assembly (for driver door) (unlock sensor)).

WIRING DIAGRAM

B281953E77

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 (Click hereClick 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, 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) 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 "DTC Output Confirmation Operation".

PROCEDURE

  1. 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.

      except Sedan:Click here

      for Sedan:Click here

      OK

      Door locks operate normally.

    Result

    Proceed to

    OK

    NG
    NG

    GO TO POWER DOOR LOCK CONTROL SYSTEM

    except Sedan:Click hereClick here

    for Sedan:Click hereClick here

    OK

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

    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 / Main Body / Data List.

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

      Body Electrical > Main Body > Data List

      Tester Display

      Measurement Item

      Range

      Normal Condition

      Diagnostic Note

      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

      -

      Body Electrical > Main Body > Data List

      Tester Display

      FL Door Lock Pos

      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

      -

      Body Electrical > Main Body > Data List

      Tester Display

      FR Door Lock Pos

      • *1: for LHD

      • *2: for RHD

      OK

      On the GTS screen, the display changes between LOCK and UNLOCK as shown in the chart above.

    Result

    Proceed to

    OK

    NG
    NG

    GO TO LIGHTING SYSTEM (Proceed to Door Unlock Detection Switch Circuit)

    Click here

    OK

  3. READ VALUE USING GTS (D-DOOR TOUCH SENSOR)

    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

      D-Door Touch Sensor

      Driver door touch sensor (unlock sensor)

      ON or OFF

      ON: Driver door touch sensor (unlock sensor) touched

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

      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)

    NG

  4. CHECK HARNESS AND CONNECTOR (FRONT DOOR OUTSIDE HANDLE ASSEMBLY - CERTIFICATION ECU)

    1. Disconnect the H13*1 or G7*2 front door outside handle assembly (for driver door) connector.

      • *1: for LHD

      • *2: for RHD

    2. Disconnect the E33 and E35 certification ECU (smart key ECU assembly) connectors.

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

      Standard Resistance

      Table 1. for LHD

      Tester Connection

      Condition

      Specified Condition

      H13-4 (SENS) - E35-22 (SEN1)

      Always

      Below 1 Ω

      E33-11 (E) - Body ground

      Always

      Below 1 Ω

      H13-4 (SENS) or E35-22 (SEN1) - Body ground

      Always

      10 kΩ or higher
      Table 2. for RHD

      Tester Connection

      Condition

      Specified Condition

      G7-4 (SENS) - E35-22 (SEN1)

      Always

      Below 1 Ω

      E33-11 (E) - Body ground

      Always

      Below 1 Ω

      G7-4 (SENS) or E35-22 (SEN1) - Body ground

      Always

      10 kΩ or higher

    Result

    Proceed to

    OK

    NG
    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  5. CHECK FRONT DOOR OUTSIDE HANDLE ASSEMBLY (FOR DRIVER DOOR) (DRIVER DOOR UNLOCK SENSOR SIGNAL INPUT)

    1. Connect the H13*1 or G7*2 front door outside handle assembly (for driver door) connector.

      • *1: for LHD

      • *2: for RHD

      B274842C32

      *a

      Component with harness connected

      (Certification ECU (Smart Key ECU Assembly))

      *b

      Waveform

      *c

      In actuality, sampling is being performed

      -

      -

    2. Connect the E33 and E35 certification ECU (smart key ECU assembly) connectors.

    3. Using an oscilloscope, check the waveform.

      OK

      Tester Connection

      Condition

      Tool Setting

      Specified Condition

      E35-22 (SEN1) - E33-11 (E)

      Procedure:

      1. Engine switch off

      2. Electrical key transmitter sub-assembly brought outside vehicle

      3. All doors locked

      4. Electrical key transmitter sub-assembly not sufficiently close to vehicle

      5. Driver door unlock sensor not touched → touched

      2 V/DIV., 500 ms/DIV.

      Pulse generation

      (See waveform)

    Result

    Proceed to

    OK

    NG
    OK

    REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

    NG

    REPLACE FRONT DOOR OUTSIDE HANDLE ASSEMBLY (FOR DRIVER DOOR)

    for Sedan:Click here

    except Sedan:Click hereClick here