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

DESCRIPTION

If the entry lock and unlock functions do not operate for the back door only, the request code may not be being transmitted from the back door. 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 electrical key antenna [outside luggage]), or there may be electric wave interference.

WIRING DIAGRAM

B005XO0E18

CAUTION / NOTICE / HINT

Note


  • The entry and start system (for Entry Function) uses a multiplex communication system (LIN communication system) and the CAN communication system. Inspect the communication function by following How to Proceed with Troubleshooting Click 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 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 the entry and start system (for Entry Function) Click here.

  • After repair, confirm DTC not reoccur with performing the "DTC Output Confirmation Operation".

  • When the entry lock and unlock functions do not operate for doors other than the driver door and if the power switch has not been turned on (IG) for 14 days or more, lock/unlock the doors using the wireless door lock function or key linked unlock operation and then check if the entry door lock and unlock functions operate.

PROCEDURE


  1. CHECK POWER DOOR LOCK OPERATION


    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.

    NG

    GO TO POWER DOOR LOCK CONTROL SYSTEM Click here

    OK

  2. READ VALUE USING GTS (BACK DOOR OPENER SWITCH)


    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.

      Entry&Start
      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      Tr/B-Door Lock SW Back door opener switch assembly (lock switch) / ON or OFF

      ON: Back door opener switch assembly (lock switch) pushed

      OFF: Back door opener switch assembly (lock switch) not pushed

      • Displays whether the back door opener switch assembly (lock switch) is on or off.

      • Use this Data List item to help determine if there is a switch malfunction when the back door lock function does not operate.
      Tr/B-Door Unlock SW Back door opener switch assembly (unlock switch) / ON or OFF

      ON: Back door opener switch assembly (unlock switch) pushed

      OFF: Back door opener switch assembly (unlock switch) not pushed

      • Displays whether the back door opener switch assembly (unlock switch) is on or off.

      • Use this Data List item to help determine if there is a switch malfunction when the back door unlock function does not operate.
      OK
      On the GTS screen, the display changes between ON and OFF as shown in the chart above.

    NG

    CHECK HARNESS AND CONNECTOR (BACK DOOR OPENER SWITCH - BODY GROUND) Click here

    OK

  3. CHECK WAVE ENVIRONMENT


    1. B005YP3E01
      Text in Illustration
      *a Approximately 0.3 m (0.984 ft.)

      Bring the electrical key transmitter sub-assembly approximately 0.3 m (0.984 ft.) from the electrical key antenna (outside luggage) and perform an entry back door unlock function check Click here.

      Note

      If the electrical key transmitter sub-assembly is brought within 0.2 m (0.656 ft.) of the rear bumper, communication may not possible.

      Tech Tips

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

      OK
      Entry function operates normally.

    OK

    AFFECTED BY WAVE INTERFERENCE

    NG

  4. CHECK ELECTRICAL KEY ANTENNA IN KEY DIAGNOSTIC MODE


    1. Check the following antenna in the key diagnostic mode Click here.

      Tech Tips

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


      1. B005YP3E01
        Text in Illustration
        *a 0.7 to 1 m (2.30 to 3.28 ft.)

        Check the electrical key antenna (outside luggage).

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

        OK
        Wireless door lock buzzer sounds.

    OK

    REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

    NG

  5. CHECK HARNESS AND CONNECTOR (ELECTRICAL KEY ANTENNA - CERTIFICATION ECU)


    1. Disconnect the S21 electrical key antenna (outside luggage) connector.

    2. Disconnect the L196 certification ECU (smart key ECU assembly) connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      S21-1 (ANTE8) - L196-2 (CLG8) Always Below 1 Ω
      S21-2 (CLGB) - L196-1 (CG8B) Always Below 1 Ω
      S21-1 (ANTE8) or L196-2 (CLG8) - Body ground Always 10 kΩ or higher
      S21-2 (CLGB) or L196-1 (CG8B) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  6. INSPECT ELECTRICAL KEY ANTENNA (OUTSIDE LUGGAGE)


    1. B005ZR2E54
      Text in Illustration
      *a

      Component without harness connected

      (Electrical Key Antenna (Outside Luggage))

      Remove the electrical key antenna (outside luggage) Click here.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      1 (ANTE8) - 2 (CLGB) Always Below 1 Ω

    OK

    REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

    NG

    REPLACE ELECTRICAL KEY ANTENNA (OUTSIDE LUGGAGE) Click here

  7. CHECK HARNESS AND CONNECTOR (BACK DOOR OPENER SWITCH - BODY GROUND)


    1. B005ZFTE02
      Text in Illustration
      *a

      Front view of wire harness connector

      (to Back Door Opener Switch Assembly)

      Disconnect the back door opener switch assembly connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      V4-2 (E) - Body ground Always Below 1 Ω

    OK

    REPLACE BACK DOOR OPENER SWITCH ASSEMBLY Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR