ENTRY AND START SYSTEM(for Entry Function) Rear Door RH Entry Lock and Unlock Functions do not Operate

DESCRIPTION

If the entry lock and unlock functions do not operate for the rear door RH only, the request code may not be being transmitted from the rear door RH or the rear door outside handle assembly RH (touch sensor) may be malfunctioning. If the entry functions for other doors operate properly, communication between the electrical key transmitter sub-assembly and door control receiver is normal. In this case, there may be a problem with request code transmission (communication between the certification ECU (smart key ECU assembly) and rear door outside handle assembly RH (electrical key antenna)), or there may be wave interference.

WIRING DIAGRAM

Figure 1. for LHD:

B0057TIE73

Figure 2. for RHD:

B0057TIE74

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 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. CHECK FOR DTC


    1. Check for DTCs.


      Body Electrical > Entry&Start > Trouble Codes
      Result
      Result Proceed to
      DTCs are not output A
      DTCs are output B

    B

    GO TO DIAGNOSTIC TROUBLE CODE CHART Click here

    A

  3. CHECK WAVE ENVIRONMENT


    1. B0057FGC01
      *a Approximately 0.3 m (0.984 ft.)

      Bring the electrical key transmitter sub-assembly approximately 0.3 m (0.984 ft.) from the rear door outside handle assembly RH and perform an entry function check.

      Click here

      Tech Tips


      • Communication may not be possible if the electrical key transmitter sub-assembly is within 0.2 m (0.656 ft.) of the rear door outside handle assembly RH

      • When the electrical key transmitter sub-assembly is brought near the rear door outside handle assembly RH, the possibility of wave interference decreases, and it can be determined if wave interference is causing the problem symptom.

      • If the inspection result is that the problem only occurs in certain locations or at certain times of day, the possibility of wave interference is high. Also, added vehicle components may cause wave interference. If installed, remove them and perform the operation check.

      • There may be wave interference if the vehicle is near broadcasting antennas, large video displays, wireless garage door opener systems, wireless security cameras, home security systems, etc. In this case, move the vehicle to a different location and check if there is any improvement.

      • If a tool for checking radio waves, such as a signal strength meter, is available, move around the area while observing both the LF band (used by the vehicle antenna to form the detection area) and RF band (used by the electrical key transmitter sub-assembly for transmission) to check for locations where there is wave interference.

      • When checking the operation of the entry lock function several times, it can be operated up to 2 times consecutively. To operate the function 3 times or more consecutively, the doors need to be unlocked once. However, this is only for the entry lock function, other door lock operations, such as a wireless door lock operation can be performed consecutively. (w/ Double Locking System)

      Result
      Result Proceed to
      Entry function does not operate normally A
      Entry function operates normally B

    B

    AFFECTED BY WAVE INTERFERENCE

    A

  4. READ VALUE USING GTS (DR-DOOR TOUCH SENSOR, PR-DOOR TOUCH SENSOR, DR-DOOR TRIGGER SWITCH, PR-DOOR TRIGGER SWITCH)


    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
      Dr-Door Touch Sensor Rear door RH touch sensor (unlock sensor)*1 ON or OFF

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

      OFF: Rear door RH 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 RH touch sensor (unlock sensor)*2 ON or OFF

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

      OFF: Rear door RH 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.
      Dr-Door Trigger Switch Rear door RH touch sensor (lock sensor)*1 ON or OFF

      ON: Rear door RH touch sensor (lock sensor) touched

      OFF: Rear door RH touch sensor (lock sensor) not touched

      • Displays whether the lock 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 a lock sensor malfunction when the entry lock function does not operate.
      Pr-Door Trigger Switch Rear door RH touch sensor (lock sensor)*2 ON or OFF

      ON: Rear door RH touch sensor (lock sensor) touched

      OFF: Rear door RH touch sensor (lock sensor) not touched

      • Displays whether the lock 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 a lock sensor malfunction when the entry lock function does not operate.

      • *1: for RHD

      • *2: for LHD


      Body Electrical > Entry&Start > Data List
      Tester Display
      Dr-Door Touch Sensor
      Pr-Door Touch Sensor
      Dr-Door Trigger Switch
      Pr-Door Trigger Switch

      Tech Tips

      When checking the operation of the entry lock function several times, it can be operated up to 2 times consecutively. To operate the function 3 times or more consecutively, the doors need to be unlocked once. However, this is only for the entry lock function, other door lock operations, such as a wireless door lock operation can be performed consecutively. (w/ Double Locking System)

      OK
      The GTS display changes correctly in response to the operation of the rear door outside handle assembly RH.
      Result
      Proceed to
      OK
      NG

    NG

    GO TO STEP 6 Click here

    OK

  5. CHECK KEY DIAGNOSTIC MODE


    1. Check the following antenna in key diagnostic mode.


      Body Electrical > Entry&Start > Utility
      Tester Display
      Communication Check(Key Diag Mode)

    2. Select either channel 1 or channel 2 and perform key diagnostic mode inspection for each channel.


      1. B0057FGC01
        *a 0.7 to 1 m (2.30 to 3.28 ft.)

        Check the electrical key antenna (for rear door RH):

        When the electrical key transmitter sub-assembly is brought within 0.7 to 1 m (2.30 to 3.28 ft.) of the rear door outside handle assembly RH, check that the wireless buzzer sounds.

        Tech Tips


        • Select either channel 1 or channel 2 and inspect key diagnostic mode for each channel.

        • If the buzzer sounds with [CH1] displayed but not with [CH2], the electrical key transmitter sub-assembly cannot be detected by channel 2 due to a malfunction, such as wave interference.

      Result
      Result Proceed to
      Wireless buzzer does not sound A
      Wireless buzzer sounds B

    B

    REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

    A

  6. CHECK HARNESS AND CONNECTOR (CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) - REAR DOOR OUTSIDE HANDLE ASSEMBLY RH)


    1. Disconnect the I52 certification ECU (smart key ECU assembly) connector.

    2. Disconnect the N4 rear door outside handle assembly RH connector.

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

      Standard Resistance
      for LHD
      Tester Connection Condition Specified Condition
      I52-10 (CLG4) - N4-4 (ANT1) Always Below 1 Ω
      I52-9 (CG4B) - N4-5 (ANT2) Always Below 1 Ω
      I52-10 (CLG4) or N4-4 (ANT1) - Body ground Always 10 kΩ or higher
      I52-9 (CG4B) or N4-5 (ANT2) - Body ground Always 10 kΩ or higher
      for RHD
      Tester Connection Condition Specified Condition
      I52-8 (CLG3) - N4-4 (ANT1) Always Below 1 Ω
      I52-7 (CG3B) - N4-5 (ANT2) Always Below 1 Ω
      I52-8 (CLG3) or N4-4 (ANT1) - Body ground Always 10 kΩ or higher
      I52-7 (CG3B) or N4-5 (ANT2) - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  7. CHECK CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) (OUTPUT TO REAR DOOR ELECTRICAL KEY ANTENNA)


    1. B005AYKC39
      *a

      Front view of wire harness connector

      (to Rear Door Outside Handle Assembly RH)
      *b Waveform 1

      Connect the I52 certification ECU (smart key ECU assembly) connector.

    2. Using an oscilloscope, check the waveform.

      OK
      Tester Connection Condition Tool Setting Specified Condition
      N4-4 (ANT1) - N4-5 (ANT2)

      Procedure:


      1. Engine switch off

      2. All doors closed

      3. Electrical key transmitter sub-assembly not inside vehicle

      4. All doors locked through wireless operation

        (electrical key transmitter sub-assembly brought outside detection area*)

      		 5 V/DIV., 100 ms/DIV.

      Pulse generation

      (See waveform 1)

      *: For details about the entry function detection area, refer to Operation Check.

      Click here

      Result
      Proceed to
      OK
      NG

    NG

    REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

    OK

  8. CHECK ENTRY LOCK OPERATION


    1. Connect all connectors and check that the entry lock and unlock functions operate.

      Click here

      Result
      Result Proceed to
      Entry function does not operate normally A
      Entry function operates normally B

    B

    END (CONNECTOR WAS NOT CONNECTED SECURELY)

    A

  9. REPLACE REAR DOOR OUTSIDE HANDLE ASSEMBLY RH


    1. Replace the rear door outside handle assembly RH with a new one or the rear door outside handle assembly LH if it is functioning properly.

      Click here

      Result
      Proceed to
      NEXT

    NEXT

  10. CHECK ENTRY LOCK OPERATION


    1. Check that the entry lock and unlock functions operate.

      Click here

      Result
      Result Proceed to
      Entry function operates normally A
      Entry function does not operate normally B

    A

    END (REAR DOOR OUTSIDE HANDLE ASSEMBLY RH WAS DEFECTIVE)

    B

    REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)