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 (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.

INSPECTION PROCEDURE

Note

Before performing the inspection, check that there are no problems related to the "CAN COMMUNICATION SYSTEM" and "LIN COMMUNICATION SYSTEM".

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 Click here.

      OK
      Locked doors unlock.

    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 Click here.

      Driver Door
      Tester Display Measurement Item/Range 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

      		 -
      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 Click here.

      Driver Door
      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

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

    NG

    INSPECT FRONT DOOR OUTSIDE HANDLE 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 Click here.

      OK
      Operates normally

    NG

    REPLACE CERTIFICATION ECU

    OK

    END (FRONT DOOR ECU IS DEFECTIVE)

  5. INSPECT FRONT DOOR OUTSIDE HANDLE


    1. A01GWXPE03

      Remove the front door outside handle.

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

      Standard resistance
      for LHD
      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
      for RHD
      Tester Connection Switch Condition Specified Condition
      N19-3 (TRG+) - N19-1 (TRG-) ON Below 1 Ω
      N19-3 (TRG+) - N19-1 (TRG-) OFF 10 kΩ or higher

    NG

    REPLACE FRONT DOOR OUTSIDE HANDLE Click here

    OK

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

    A01GYHTE71

    Tech Tips


    • *1: for LHD

    • *2: for RHD


    1. Disconnect the N10*1 or N1*2 ECU connector.

    2. Disconnect the N21*1 or N19*2 handle connector.

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

      Standard resistance
      for LHD
      Tester Connection Condition Specified Condition
      N10-20 (TRG+) - N21-3 (TRG+) Always Below 1 Ω
      N21-3 (TRG+) - Body ground Always 10 kΩ or higher
      for RHD
      Tester Connection Condition Specified Condition
      N1-20 (TRG+) - N19-3 (TRG+) Always Below 1 Ω
      N19-3 (TRG+) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

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

    A01GXQXE42

    Tech Tips


    • *1: for LHD

    • *2: for RHD


    1. Disconnect the N20*1 or N18*2 oscillator connector.

    2. Disconnect the N21*1 or N19*2 handle connector.

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

      Standard resistance
      for LHD
      Tester Connection Condition Specified Condition
      N20-9 (TRG-) - N21-1 (TRG-) Always Below 1 Ω
      N21-1 (TRG-) - Body ground Always 10 kΩ or higher
      for RHD
      Tester Connection Condition Specified Condition
      N18-9 (TRG-) - N19-1 (TRG-) Always Below 1 Ω
      N19-1 (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 Click here.

      OK
      Operates normally

    NG

    CHECK FRONT DOOR ECU (OPERATION) Click here

    OK

    END (DOOR ELECTRICAL OSCILLATOR IS DEFECTIVE)

  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 Click here.

      OK
      Operates normally

    NG

    REPLACE CERTIFICATION ECU

    OK

    END (FRONT DOOR ECU IS DEFECTIVE)