ENTRY AND START SYSTEM(for Entry Function) Driver Side Door Entry Lock Function does not Operate

DTC Code DTC Name
Driver Side Door Entry Lock Function does not Operate

DESCRIPTION

If the entry lock function does not operate for the driver door only, but the entry unlock function operates, the request code is being transmitted properly from the driver door. In this case, there may be a problem related to the door lock position switch system.

WIRING DIAGRAM

B371223E09
B371223E10

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 performing the inspection, check that DTC B1242 (wireless door lock control) or B27B0 is not output.

  • 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 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. CONFIRM MODEL

    1. Choose the model to be inspected.

    Result

    Result

    Proceed to

    for LHD

    A

    for RHD

    B
    B

    INSPECT FRONT DOOR LOCK ASSEMBLY RHClick here

    A

  3. INSPECT FRONT DOOR LOCK ASSEMBLY LH

    1. Remove the front door lock assembly LH.

      Click here

    2. Inspect the front door lock assembly LH.

      Click here

    Result

    Proceed to

    OK

    NG
    NG

    REPLACE FRONT DOOR LOCK ASSEMBLY LH

    Click here

    OK

  4. CHECK HARNESS AND CONNECTOR (BODY ECU - FRONT DOOR LOCK ASSEMBLY LH)

    1. Disconnect the E46 body ECU connector.

    2. Disconnect the H2 front door lock assembly LH connector.

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

      Standard Resistance

      Tester Connection

      Condition

      Specified Condition

      E46-15 (LSWD) - H2-6 (DLSR)

      Always

      Below 1 Ω

      H2-7 (E) - Body ground

      Always

      Below 1 Ω

      E46-15 (LSWD) or H2-6 (DLSR) - Body ground

      Always

      10 kΩ or higher

    Result

    Proceed to

    OK

    NG
    OK

    REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

  5. INSPECT FRONT DOOR LOCK ASSEMBLY RH

    1. Remove the front door lock assembly RH.

      Click here

    2. Inspect the front door lock assembly RH.

      Click here

    Result

    Proceed to

    OK

    NG
    NG

    REPLACE FRONT DOOR LOCK ASSEMBLY LH

    Click here

    OK

  6. CHECK HARNESS AND CONNECTOR (BODY ECU - FRONT DOOR LOCK ASSEMBLY RH)

    1. Disconnect the E46 body ECU connector.

    2. Disconnect the G2 front door lock assembly RH connector.

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

      Standard Resistance

      Tester Connection

      Condition

      Specified Condition

      E46-15 (LSWD) - G2-9 (DLSR)

      Always

      Below 1 Ω

      G2-8 (E) - Body ground

      Always

      Below 1 Ω

      E46-15 (LSWD) or G2-9 (DLSR) - Body ground

      Always

      10 kΩ or higher

    Result

    Proceed to

    OK

    NG
    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  7. REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

    1. Replace the certification ECU (smart key ECU assembly) with a new one.

      Tip:

      Refer to Service Bulletin.

    Result

    Proceed to

    NEXT
    NEXT

  8. CHECK ENTRY DOOR LOCK OPERATION

    1. Connect all connectors.

    2. Check the operation of the entry lock function of the driver door.

      Click hereClick here

      OK

      Entry lock function operates normally.

    Result

    Proceed to

    OK

    NG
    OK

    END (CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) WAS DEFECTIVE)

    NG

    REPLACE BODY ECU

    Click here