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

DTC Code DTC Name
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

B341304E02

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 vehicle power switch off, connect the GTS to the vehicle 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. 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 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 hereClick here

    Result

    Proceed to

    Door locks operate normally

    Door locks do not operate
    Door locks do not operate

    GO TO POWER DOOR LOCK CONTROL SYSTEM

    Click here

    Door locks operate normally

  2. CHECK WAVE ENVIRONMENT

    1. B340888C01

      *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 hereClick 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.

      Tip:

      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

    Proceed to

    Entry function does not operate normally

    Entry function operates normally
    Entry function operates normally

    AFFECTED BY WAVE INTERFERENCE

    Entry function does not operate normally

  3. INSPECT BACK DOOR OPENER SWITCH ASSEMBLY

    1. Remove the back door opener switch assembly.

      Click here

    2. Inspect back door opener switch assembly.

      Click here

    Result

    Proceed to

    OK

    NG
    NG

    REPLACE BACK DOOR OPENER SWITCH ASSEMBLY

    Click here

    OK

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

    1. B203524C03

      *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

      U7-2 (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.

    2. B340888C01

      *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)
      Tip:

      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

    Proceed to

    Diagnostic mode inspections fail

    Diagnostic mode inspections succeed
    Diagnostic mode inspections succeed

    REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

    Diagnostic mode inspections fail

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

    1. Disconnect the T2 electrical key antenna (outside luggage) connector.

    2. Disconnect the G83 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

      T2-1 (ANTE8) - G83-2 (CLG8)

      Always

      Below 1 Ω

      T2-2 (CLGB) - G83-1 (CG8B)

      Always

      Below 1 Ω

      T2-1 (ANTE8) or G83-2 (CLG8) - Body ground

      Always

      10 kΩ or higher

      T2-2 (CLGB) or G83-1 (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. B226391N15

      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