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

A01TD2RE07

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 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 the 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) precaution.

    Click here

  • After repair, confirm that no DTCs are output by performing "DTC Output Confirmation Operation".

  • When the entry lock and unlock functions do not operate for doors other than the driver door and if the engine 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.
      Result
      Proceed to
      OK
      NG

    NG

    GO TO POWER DOOR LOCK CONTROL SYSTEM Click here

    OK

  2. CHECK WAVE ENVIRONMENT


    1. A01TBKJC01
      *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 wave interference is high. Also, added vehicle components may cause wave interference. If installed, remove them and perform the operation check.

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

    B

    AFFECTED BY WAVE INTERFERENCE

    A

  3. INSPECT BACK DOOR OPENER SWITCH ASSEMBLY


    1. Inspect back door opener switch assembly.

      Click here

      Result
      Proceed to
      OK
      NG

    NG

    REPLACE BACK DOOR OPENER SWITCH ASSEMBLY for Wagon: Click here
    REPLACE BACK DOOR OPENER SWITCH ASSEMBLY for Hatchback: Click here

    OK

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


    1. A01TCOQC02
      *a

      Front view of wire harness connector

      (to Back Door Opener Switch Assembly)

      Disconnect the Q8 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
      Q8-2 (E) - Body ground Always Below 1 Ω
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  5. CHECK KEY DIAGNOSTIC MODE


    1. Check the following antenna in key diagnostic mode.

      Click here

    2. A01TBKJC01
      *a 0.7 to 1 m (2.30 to 3.28 ft.)

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


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

      Tech Tips

      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.


      1. 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.
      Result
      Result Proceed to
      Diagnostic mode inspections fail A
      Diagnostic mode inspections succeed B

    B

    REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

    A

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


    1. Disconnect the L17 electrical key antenna (outside luggage) connector.

    2. Disconnect the E34 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
      L17-1 (ANTE8) - E34-2 (CLG8) Always Below 1 Ω
      L17-2 (CLGB) - E34-1 (CG8B) Always Below 1 Ω
      L17-1 (ANTE8) or E34-2 (CLG8) - Body ground Always 10 kΩ or higher
      L17-2 (CLGB) or E34-1 (CG8B) - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  7. INSPECT ELECTRICAL KEY ANTENNA (OUTSIDE LUGGAGE)


    1. A01TCFSC15
      *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
      Result
      Proceed to
      OK
      NG

    OK

    REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

    NG

    REPLACE ELECTRICAL KEY ANTENNA (OUTSIDE LUGGAGE) Click here