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

WIRING DIAGRAM

A01MRR3E35

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 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(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 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.

      Click here

      OK
      Door locks operate normally.
      Result
      Proceed to
      OK
      NG

    NG

    GO TO POWER DOOR LOCK CONTROL SYSTEM Click 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 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.


      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*1 UNLOCK or LOCK

      UNLOCK: Front door RH unlocked

      LOCK: Front door RH locked

      		 -
      FL Door Lock Pos Front door LH unlock detection switch signal*2 UNLOCK or LOCK

      UNLOCK: Front door LH unlocked

      LOCK: Front door LH locked

      		 -

      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 front LH*2 or RH*1 door.

      • *1: for RHD

      • *2: for LHD

      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 power 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 (CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) - FRONT DOOR OUTSIDE HANDLE ASSEMBLY (FOR DRIVER DOOR))


    1. Disconnect the K8 certification ECU (smart key ECU assembly) connector.

    2. Disconnect the N26*1 or N11*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
      for LHD
      Tester Connection Condition Specified Condition
      K8-4 (CLG1) - N26-6 (ANT1) Always Below 1 Ω
      K8-3 (CG1B) - N26-4 (ANT2) Always Below 1 Ω
      K8-4 (CLG1) or N26-6 (ANT1) - Body ground Always 10 kΩ or higher
      K8-3 (CG1B) or N26-4 (ANT2) - Body ground Always 10 kΩ or higher
      for RHD
      Tester Connection Condition Specified Condition
      K8-4 (CLG1) - N11-6 (ANT1) Always Below 1 Ω
      K8-3 (CG1B) - N11-4 (ANT2) Always Below 1 Ω
      K8-4 (CLG1) or N11-6 (ANT1) - Body ground Always 10 kΩ or higher
      K8-3 (CG1B) or N11-4 (ANT2) - Body ground Always 10 kΩ or higher

    4. Reconnect the N26*1 or N11*2 front door outside handle assembly (for driver door) connector.


      • *1: for LHD

      • *2: for RHD

    5. Reconnect the K8 certification ECU (smart key ECU assembly) connector.

      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

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

    A01MSITC07
    *a

    Component with harness connected

    (Certification ECU (Smart Key ECU Assembly))

    		 *b Waveform 1
    *c Unlock sensor not touched *d Unlock sensor touched

    1. Using an oscilloscope, check the waveform.

      OK
      Tester Connection Condition Tool Setting Specified Condition
      K8-4 (CLG1) - K8-1 (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., 40 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