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

DTC Code DTC Name
Front Passenger Side Door Entry Lock and Unlock Functions do not Operate

DESCRIPTION

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

WIRING DIAGRAM

B281953E78

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 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 performing the inspection, check that DTC B1242 (wireless door lock control) is not output.

    Click here

  • 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 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 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 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.

      except Sedan:Click here

      for Sedan:Click here

      OK

      Door locks operate normally.

    Result

    Proceed to

    OK

    NG
    NG

    GO TO POWER DOOR LOCK CONTROL SYSTEM

    except Sedan:Click here

    for Sedan:Click here

    OK

  2. CHECK WAVE ENVIRONMENT

    1. B331624C01

      *A

      for LHD

      *B

      for RHD

      *a

      Approximately 0.3 m (0.984 ft.)

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

      Click hereClick here

      Note:

      If the electrical key transmitter sub-assembly is brought within 0.2 m (0.656 ft.) of the door handle, communication may not be 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

    Result

    Proceed to

    Entry function does not operate normally

    A

    Entry function operates normally

    B
    B

    AFFECTED BY WAVE INTERFERENCE

    A

  3. CHECK HARNESS AND CONNECTOR (FRONT DOOR OUTSIDE HANDLE ASSEMBLY - CERTIFICATION ECU)

    1. Disconnect the G12*1 or H7*2 front door outside handle assembly (for front passenger door) connector.

      • *1: for LHD

      • *2: for RHD

    2. Disconnect the E35 certification ECU (smart key ECU assembly) connector.

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

      Standard Resistance

      Table 1. for LHD

      Tester Connection

      Condition

      Specified Condition

      G12-3 (ANT2) - E35-10 (CG2B)

      Always

      Below 1 Ω

      G12-6 (ANT1) - E35-11 (CLG2)

      Always

      Below 1 Ω

      G12-5 (B) - E35-21 (POS2)

      Always

      Below 1 Ω

      G12-2 (GND) - Body ground

      Always

      Below 1 Ω

      G12-3 (ANT2) or E35-10 (CG2B) - Body ground

      Always

      10 kΩ or higher

      G12-6 (ANT1) or E35-11 (CLG2) - Body ground

      Always

      10 kΩ or higher

      G12-5 (B) or E35-21 (POS2) - Body ground

      Always

      10 kΩ or higher
      Table 2. for RHD

      Tester Connection

      Condition

      Specified Condition

      H7-3 (ANT2) - E35-10 (CG2B)

      Always

      Below 1 Ω

      H7-6 (ANT1) - E35-11 (CLG2)

      Always

      Below 1 Ω

      H7-5 (B) - E35-21 (POS2)

      Always

      Below 1 Ω

      H7-2 (GND) - Body ground

      Always

      Below 1 Ω

      H7-3 (ANT2) or E35-10 (CG2B) - Body ground

      Always

      10 kΩ or higher

      H7-6 (ANT1) or E35-11 (CLG2) - Body ground

      Always

      10 kΩ or higher

      H7-5 (B) or E35-21 (POS2) - Body ground

      Always

      10 kΩ or higher

    Result

    Proceed to

    OK

    NG
    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  4. CHECK CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) (FRONT PASSENGER DOOR LOCK SENSOR SIGNAL INPUT)

    1. B250975C20

      *A

      for LHD

      *B

      for RHD

      *a

      Front view of wire harness connector

      (to Front Door Outside Handle Assembly (for Front Passenger Door))

      *b

      Waveform

      Disconnect the G12*1 or H7*2 front door outside handle assembly (for front passenger door) connector.

      • *1: for LHD

      • *2: for RHD

    2. Connect the E35 certification ECU (smart key ECU assembly) connector.

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

      Standard Voltage

      Tester Connection

      Condition

      Specified Condition

      G12-5 (B) - G12-2 (GND)*1

      Engine switch off → on (IG)

      9 to 14 V → Below 2 V

      H7-5 (B) - H7-2 (GND)*2

      • *1: for LHD

      • *2: for RHD

    4. Using an oscilloscope, check the waveform.

      OK

      Tester Connection

      Condition

      Tool Setting

      Specified Condition

      G12-3 (ANT2) - G12-6 (ANT1)*1

      Procedure:

      1. Engine switch off

      2. Electrical key transmitter sub-assembly brought outside vehicle

      3. All doors closed

      4. Electrical key transmitter sub-assembly not inside vehicle

      5. Electrical key transmitter sub-assembly brought outside detection area

      6. All doors locked through wireless operation

      2 V/DIV., 500 ms/DIV.

      Pulse generation

      (See waveform)

      H7-3 (ANT2) - H7-6 (ANT1)*2

      • *1: for LHD

      • *2: for RHD

    Result

    Proceed to

    OK

    NG
    NG

    REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

    OK

  5. REPLACE FRONT DOOR OUTSIDE HANDLE ASSEMBLY (FOR FRONT PASSENGER DOOR)

    1. Temporarily replace the front door outside handle assembly (for front passenger door) with a new or known good one.

      for Sedan:Click hereClick here

      except Sedan:Click hereClick here

    Result

    Proceed to

    NEXT
    NEXT

  6. CHECK FRONT DOOR OUTSIDE HANDLE ASSEMBLY (FOR FRONT PASSENGER DOOR) (OPERATION)

    1. Check that the entry functions operate normally.

      Click hereClick here

      OK

      Entry functions operate normally.

    Result

    Proceed to

    OK

    NG
    OK

    END (FRONT DOOR OUTSIDE HANDLE ASSEMBLY (FOR FRONT PASSENGER DOOR) WAS DEFECTIVE)

    NG

    REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)