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

DESCRIPTION

If the driver door entry lock function does not operate but the entry unlock operation operates, the communication line between the vehicle and electrical key transmitter is normal. Either of the following may have occurred: 1) the entry lock switch is malfunctioning; or 2) the front door ECU (for driver side) receives the entry lock switch ON signal, but is unable to send the signal to the certification ECU through CAN communication.

WIRING DIAGRAM

Refer to Driver Side Door Entry Lock and Unlock Functions do not Operate Click here.

PROCEDURE


  1. CHECK POWER DOOR LOCK OPERATION


    1. When the master switch assembly's door control switch is operated, check that the locked doors unlock.

      Result
      Result Proceed to
      Door locks operate normally OK
      Door locks do not operate normally NG

    NG

    GO TO POWER DOOR LOCK CONTROL SYSTEM Click here

    OK

  2. READ VALUE USING INTELLIGENT TESTER (DOOR LOCK POSITION SWITCH)


    1. Using the intelligent tester, read the Data List.

      Driver Door (Front door ECU LH*1) (Front door ECU RH*2)
      Tester Display Measurement Item/Display Normal Condition Diagnostic Note
      Lock Position SW Driver side door lock position switch signal / ON or OFF

      ON: Driver side door is unlocked

      OFF: Driver side door is locked

      		 -

      Tech Tips

      *1: for LHD

      *2: for RHD

      OK
      On intelligent tester screen, item changes between ON and OFF according to above chart.

    NG

    GO TO POWER DOOR LOCK CONTROL SYSTEM (Proceed to Only Driver Door LOCK/UNLOCK Functions do not Operate) Click here

    OK

  3. READ VALUE USING INTELLIGENT TESTER (OUTSIDE HANDLE)


    1. Using the intelligent tester, read the Data List.

      Driver Door (Front door ECU LH*1) (Front door ECU RH*2)
      Tester Display Measurement Item/Display Normal Condition Diagnostic Note
      Outside Handle Trigger SW Driver side door outside handle lock switch / ON or OFF

      ON: Driver side door outside handle lock switch is pushed

      OFF: Driver side door outside handle lock switch is not pushed

      		 -

      Tech Tips

      *1: for LHD

      *2: for RHD

      OK
      On intelligent tester screen, item changes between ON and OFF according to above chart.

    NG

    INSPECT FRONT DOOR OUTSIDE HANDLE (for Driver Side) Click here

    OK

  4. CHECK FRONT DOOR ECU (OPERATION)


    1. Replace the front door ECU LH*1 or RH*2 with a new one or normally functioning one Click here.

      Tech Tips

      *1: for LHD

      *2: for RHD

    2. Check that the entry function operates normally.

      OK
      Operates normally

    OK

    END (FRONT DOOR ECU IS DEFECTIVE)

    NG

    REPLACE CERTIFICATION ECU

  5. INSPECT FRONT DOOR OUTSIDE HANDLE (for Driver Side)


    1. A0018XBE02
      for LHD
      *1 Component Without Harness Connected: (Front Door Outside Handle)

      Remove the front door outside handle.

    2. A0019H3E02
      for RHD
      *1 Component Without Harness Connected: (Front Door Outside Handle)

      for LHD:


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

        Standard resistance
        Tester Connection Switch Condition Specified Condition
        N23-3 (TRG+) - N23-1 (TRG-) ON Below 1 Ω
        N23-3 (TRG+) - N23-1 (TRG-) OFF 10 kΩ or higher

    3. for RHD:


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

        Standard resistance
        Tester Connection Switch Condition Specified Condition
        N21-3 (TRG+) - N21-1 (TRG-) ON Below 1 Ω
        N21-3 (TRG+) - N21-1 (TRG-) OFF 10 kΩ or higher

    NG

    REPLACE FRONT DOOR OUTSIDE HANDLE Click here

    OK

  6. CHECK HARNESS AND CONNECTOR (FRONT DOOR OUTSIDE HANDLE - FRONT DOOR ECU)

    A001DP3E02
    for LHD
    *1 Front view of wire harness connector: (to Front Door ECU LH)
    *2 Front view of wire harness connector: (to Front Door Outside Handle LH)

    1. for LHD:


      1. Disconnect the N23 handle connector.

      2. Disconnect the N10 ECU connector.

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

        Standard resistance
        Tester Connection Condition Specified Condition
        N23-3 (TRG+) - N10-20 (TRG+) Always Below 1 Ω
        N23-3 (TRG+) - Body ground Always 10 kΩ or higher
      A001CCGE02
      for RHD
      *1 Front view of wire harness connector: (to Front Door ECU RH)
      *2 Front view of wire harness connector: (to Front Door Outside Handle RH)

    2. for RHD:


      1. Disconnect the N21 handle connector.

      2. Disconnect the N1 ECU connector.

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

        Standard resistance
        Tester Connection Condition Specified Condition
        N21-3 (TRG+) - N1-20 (TRG+) Always Below 1 Ω
        N21-3 (TRG+) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  7. CHECK HARNESS AND CONNECTOR (FRONT DOOR OUTSIDE HANDLE - DOOR ELECTRICAL KEY OSCILLATOR)

    A001CH9E01
    for LHD
    *1 Front view of wire harness connector: (to Door Electrical Key Oscillator)
    *2 Front view of wire harness connector: (to Front Door Outside Handle LH)

    1. for LHD:


      1. Disconnect the N23 handle connector.

      2. Disconnect the N22 oscillator connector.

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

        Standard resistance
        Tester Connection Condition Specified Condition
        N23-1 (TRG-) - N22-9 (TRG-) Always Below 1 Ω
        N23-1 (TRG-) - Body ground Always 10 kΩ or higher
      A001CNOE01
      for RHD
      *1 Front view of wire harness connector: (to Door Electrical Key Oscillator)
      *2 Front view of wire harness connector: (to Front Door Outside Handle RH)

    2. for RHD:


      1. Disconnect the N21 handle connector.

      2. Disconnect the N20 oscillator connector.

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

        Standard resistance
        Tester Connection Condition Specified Condition
        N21-1 (TRG-) - N20-9 (TRG-) Always Below 1 Ω
        N21-1 (TRG-) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  8. CHECK DOOR ELECTRICAL KEY OSCILLATOR (OPERATION)


    1. Replace the door electrical key oscillator with a new one or normally functioning one Click here.

    2. Check that the entry function operates normally.

      OK
      Operates normally

    OK

    END (DOOR ELECTRICAL OSCILLATOR IS DEFECTIVE)

    NG

  9. CHECK FRONT DOOR ECU (OPERATION)


    1. Replace the front door ECU LH*1 or RH*2 with a new one or normally functioning one Click here.

      Tech Tips

      *1: for LHD

      *2: for RHD

    2. Check that the entry function operates normally.

      OK
      Operates normally

    OK

    END (FRONT DOOR ECU IS DEFECTIVE)

    NG

    REPLACE CERTIFICATION ECU