SMART 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 function operates, the communication line between the vehicle and electrical key transmitter is normal. As a faulty part, the entry lock switch circuit (certification ECU (smart key ECU assembly) → driver side door outside handle (entry lock switch) → driver side door electrical key oscillator) can be considered.

WIRING DIAGRAM

A017BVLE13

INSPECTION PROCEDURE

Note

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

PROCEDURE


  1. CHECK POWER DOOR LOCK OPERATION


    1. When the door control switch on the master switch assembly 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. Connect the intelligent tester to the DLC3.

    2. Turn the engine switch on (IG).

    3. Turn the intelligent tester on.

    4. Enter the following menus: Body / Main Body / Data List.

    5. Read the Data List according to the display on the intelligent tester.

      Main Body (Main Body ECU (Instrument Panel Junction Block))
      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      D-Door Lock Pos SW Driver door lock position switch signal/LOCK or UNLOCK

      ON: Driver side door is unlocked

      OFF: Driver side door is locked

      		 -
      OK
      On the intelligent tester screen, the display changes between ON and OFF as shown in the chart above.
      Result
      Result Proceed to
      OK A
      NG

      B

      (Proceed to "Driver Door LOCK/UNLOCK Functions do not Operate")

    B

    GO TO POWER DOOR LOCK CONTROL SYSTEM Click here

    A

  3. READ VALUE ON INTELLIGENT TESTER (DOOR OUTSIDE HANDLE)


    1. Select D Trigger SW in the Data List and read the tester display.

      Entry & Start (Certification ECU (Smart Key ECU Assembly)):
      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      D Trigger SW Driver side door lock switch / ON or OFF

      ON: Entry lock switch is pressed

      OFF: Entry lock switch is not pressed

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

    NG

    CHECK HARNESS AND CONNECTOR (FRONT DOOR OUTSIDE HANDLE - DOOR ELECTRICAL KEY OSCILLATOR) Click here

    OK

    REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

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


    1. A017CMKE33

      Remove the front door outside handle Click here.

    2. Disconnect the door electrical key oscillator connector.

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

      Standard resistance
      for LHD
      Tester Connection Condition Specified Condition
      z13-1 (TRG-) - z14-9 (TRG-) Always Below 1 Ω
      z13-1 (TRG-) - Body ground Always 10 kΩ or higher
      for RHD
      Tester Connection Condition Specified Condition
      z15-1 (TRG-) - z16-9 (TRG-) Always Below 1 Ω
      z15-1 (TRG-) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

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


    1. A017CHYE03

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

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

      Standard resistance
      for LHD
      Tester Connection Condition Specified Condition
      D36-3 (TSW1) - z13-3 (TRG+) Always Below 1 Ω
      D36-3 (TSW1) - Body ground Always 10 kΩ or higher
      for RHD
      Tester Connection Condition Specified Condition
      D36-3 (TSW1) - z15-3 (TRG+) Always Below 1 Ω
      D36-3 (TSW1) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  6. INSPECT FRONT DOOR OUTSIDE HANDLE (DRIVER SIDE)


    1. A017CXNE32

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

      Standard resistance
      for LHD
      Tester Connection Condition Specified Condition
      z13-1 (TRG-) - z13-3 (TRG+) Lock switch not pushed 10 kΩ or higher
      z13-1 (TRG-) - z13-3 (TRG+) Lock switch pushed Below 1 Ω
      for RHD
      Tester Connection Condition Specified Condition
      z15-1 (TRG-) - z15-3 (TRG+) Lock switch not pushed 10 kΩ or higher
      z15-1 (TRG-) - z15-3 (TRG+) Lock switch pushed Below 1 Ω

    NG

    REPLACE FRONT DOOR OUTSIDE HANDLE Click here

    OK

  7. REPLACE DOOR ELECTRICAL KEY OSCILLATOR


    1. Replace the door electrical key oscillator Click here.


    NEXT

  8. CHECK DOOR ELECTRICAL KEY OSCILLATOR (OPERATION)


    1. Check that the entry functions operate normally.

      OK
      Entry functions operate normally.

    NG

    REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

    OK

    END (DOOR ELECTRICAL OSCILLATOR IS DEFECTIVE)