ENTRY AND START SYSTEM(for Entry Function) Rear Door LH Entry Unlock Function does not Operate

DESCRIPTION

If the entry unlock function does not operate for the rear door LH only, but the entry lock function operates, the request code is being transmitted properly from the rear door LH. In this case, there may be a problem related to the unlock sensor (connection between the certification ECU (smart key ECU assembly) and rear door outside handle assembly LH).

WIRING DIAGRAM

Figure 1. for LHD

B005NIXE12

Figure 2. for RHD

B005NIXE20

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 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 replacing the certification ECU (smart key ECU assembly), refer to Precaution.

    Click here

  • After repair, confirm that no DTCs are output.

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 (RL-DOOR LOCK POS SW)


    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
      RL-Door Lock Pos SW Rear door LH unlock detection switch signal ON or OFF

      ON: Rear door LH unlocked

      OFF: Rear door LH locked

      		 -

      Body Electrical > Main Body > Data List
      Tester Display
      RL-Door Lock Pos SW
      OK
      The GTS display changes correctly in response to the lock/unlock operation of the rear door LH.
      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 (DR-DOOR TOUCH SENSOR, PR-DOOR TOUCH SENSOR)


    1. Turn the engine switch off.

    2. Open and close the rear door LH.

    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 rear door LH.

    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. B005LPTC01
      *a Unlock Sensor (Backside)

      Touch the unlock sensor on the backside of the front door outside handle assembly (for rear door LH).

      Tech Tips

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


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

      ON: Rear door LH touch sensor (unlock sensor) touched

      OFF: Rear door LH 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.
      Pr-Door Touch Sensor Rear door LH touch sensor (unlock sensor)*2 ON or OFF

      ON: Rear door LH touch sensor (unlock sensor) touched

      OFF: Rear door LH 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.

      • *1: for LHD

      • *2: for RHD


      Body Electrical > Entry&Start > Data List
      Tester Display
      Dr-Door Touch Sensor
      Pr-Door Touch Sensor
      OK
      The GTS display changes correctly in response to the operation of the rear door outside handle assembly LH.
      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) - REAR DOOR OUTSIDE HANDLE ASSEMBLY LH)


    1. Disconnect the R1*1 or S5*2 certification ECU (smart key ECU assembly) connector.


      • *1: for LHD

      • *2: for RHD

    2. Disconnect the P4 rear door outside handle assembly LH connector.

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

      Standard Resistance
      for LHD
      Tester Connection Condition Specified Condition
      R1-1 (CLG3) - P4-4 (ANT1) Always Below 1 Ω
      R1-2 (CG3B) - P4-5 (ANT2) Always Below 1 Ω
      R1-1 (CLG3) or P4-4 (ANT1) - Body ground Always 10 kΩ or higher
      R1-2 (CG3B) or P4-5 (ANT2) - Body ground Always 10 kΩ or higher
      for RHD
      Tester Connection Condition Specified Condition
      S5-9 (CLG4) - P4-4 (ANT1) Always Below 1 Ω
      S5-8 (CG4B) - P4-5 (ANT2) Always Below 1 Ω
      S5-9 (CLG4) or P4-4 (ANT1) - Body ground Always 10 kΩ or higher
      S5-8 (CG4B) or P4-5 (ANT2) - Body ground Always 10 kΩ or higher

    4. Reconnect the P4 rear door outside handle assembly LH connector.

    5. Reconnect the R1*1 or S5*2 certification ECU (smart key ECU assembly) connector.


      • *1: for LHD

      • *2: for RHD

      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  5. CHECK REAR DOOR OUTSIDE HANDLE ASSEMBLY LH (INPUT TO CERTIFICATION ECU (SMART KEY ECU ASSEMBLY))

    B005LTPC15
    *A for LHD *B for RHD
    *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
      for LHD
      Tester Connection Condition Tool Setting Specified Condition
      R1-1 (CLG3) - J41-18 (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 near the vehicle

      5. Rear door LH unlock sensor touched

      		 5 V/DIV., 50 ms/DIV.

      Pulse generation

      (See waveform 1)
      for RHD
      Tester Connection Condition Tool Setting Specified Condition
      S5-9 (CLG4) - J41-18 (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 near the vehicle

      5. Rear door LH 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 REAR DOOR OUTSIDE HANDLE ASSEMBLY LH Click here