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

DESCRIPTION

When the driver side door entry lock and unlock functions do not operate, one of the following may be malfunctioning: 1) power door lock system, 2) driver side door electrical key oscillator, or 3) certification ECU (smart key ECU assembly).

WIRING DIAGRAM

A01EQ93E05

INSPECTION PROCEDURE

PROCEDURE


  1. CHECK POWER DOOR LOCK OPERATION


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

      OK
      Door locks operate normally.

    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
      Tester Display Measurement Item / Range Normal Condition Diagnostic Note
      D Door Lock Position SW Driver side door lock position switch signal / ON or OFF

      ON: Driver side door unlocked

      OFF: Driver side door locked

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

    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 (TOUCH SENSOR, TRIGGER SWITCH)


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

      Entry&Start
      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      D-Door Touch Sensor Driver side door touch sensor / ON or OFF

      ON: Touch sensor touched

      OFF: Touch sensor not touched

      		 -
      D-Door Trigger Switch Driver side door outside handle lock switch / ON or OFF

      ON: Entry lock switch pushed

      OFF: Entry lock switch not pushed

      		 -
      Result
      Result Proceed to
      Display changes according to manual operation A
      Display does not change according to manual operation B

    B

    CHECK HARNESS AND CONNECTOR (CERTIFICATION ECU [SMART KEY ECU ASSEMBLY] - DOOR ELECTRICAL KEY OSCILLATOR) Click here

    A

  4. CHECK WAVE ENVIRONMENT


    1. A01ERI1E02

      Bring the electrical key transmitter near the driver side door outside handle, and perform a driver side door entry lock and unlock operation check.

      Note

      If the key is brought within 0.2 m (0.656 ft.) of the door handle, communication is not possible.

      Tech Tips


      • When the electrical key transmitter is brought near the driver side door outside handle, the possibility of wave interference decreases, and it can be determined if wave interference is causing the problem symptom.

      • If the operation check is normal, 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
      Operation check fails A
      Operation check is normal B

    B

    AFFECTED BY WAVE INTERFERENCE

    A

  5. PERFORM KEY DIAGNOSTIC MODE INSPECTION


    1. A01ENNJE02

      Diagnostic mode inspection (driver side door electrical key oscillator).


      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 / Entry&Start / Key Communication Check / Overhead + Driver Side.

      5. When the electrical key transmitter is in the position shown in the illustration, check that the wireless door lock buzzer sounds.

        Tech Tips

        If the buzzer sounds, it can be determined that the driver seat outside transmitter is operating normally.

        OK
        Wireless door lock buzzer sounds.

    NG

    CHECK HARNESS AND CONNECTOR (CERTIFICATION ECU [SMART KEY ECU ASSEMBLY] - DOOR ELECTRICAL KEY OSCILLATOR) Click here

    OK

    REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

  6. CHECK HARNESS AND CONNECTOR (CERTIFICATION ECU [SMART KEY ECU ASSEMBLY] - DOOR ELECTRICAL KEY OSCILLATOR)


    1. A01ERXQE11

      Disconnect the E29 ECU connector.

    2. Disconnect the z24 or z22 oscillator connector.

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

      Standard Resistance
      for LHD
      Tester Connection Condition Specified Condition
      E29-5 (SEL1) - z24-4 (SEL) Always Below 1 Ω
      E29-33 (CLG1) - z24-10 (CLG) Always Below 1 Ω
      E29-34 (CG1B) - z24-5 (CLGB) Always Below 1 Ω
      E29-5 (SEL1) - Body ground Always 10 kΩ or higher
      E29-33 (CLG1) - Body ground Always 10 kΩ or higher
      E29-34 (CG1B) - Body ground Always 10 kΩ or higher
      for RHD
      Tester Connection Condition Specified Condition
      E29-5 (SEL1) - z22-4 (SEL) Always Below 1 Ω
      E29-33 (CLG1) - z22-10 (CLG) Always Below 1 Ω
      E29-34 (CG1B) - z22-5 (CLGB) Always Below 1 Ω
      E29-5 (SEL1) - Body ground Always 10 kΩ or higher
      E29-33 (CLG1) - Body ground Always 10 kΩ or higher
      E29-34 (CG1B) - 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)


    1. A01ENIGE59

      Disconnect the z23 or z21 handle connector.

    2. Disconnect the z24 or z22 oscillator connector.

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

      Standard Resistance
      for LHD
      Tester Connection Condition Specified Condition
      z23-2 (ANT2) - z24-8 (ANT2) Always Below 1 Ω
      z23-5 (ANT1) - z24-3 (ANT1) Always Below 1 Ω
      z23-2 (ANT2) - Body ground Always 10 kΩ or higher
      z23-5 (ANT1) - Body ground Always 10 kΩ or higher
      for RHD
      Tester Connection Condition Specified Condition
      z21-2 (ANT2) - z22-8 (ANT2) Always Below 1 Ω
      z21-5 (ANT1) - z22-3 (ANT1) Always Below 1 Ω
      z21-2 (ANT2) - Body ground Always 10 kΩ or higher
      z21-5 (ANT1) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  8. CHECK HARNESS AND CONNECTOR (DOOR ELECTRICAL KEY OSCILLATOR - BATTERY AND BODY GROUND)


    1. A01ENKRE19

      Disconnect the z24 or z22 oscillator connector.

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

      Standard Voltage
      for LHD
      Tester Connection Condition Specified Condition
      z24-1 (B) - z24-7 (GND) Always 11 to 14 V
      for RHD
      Tester Connection Condition Specified Condition
      z22-1 (B) - z22-7 (GND) Always 11 to 14 V

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  9. REPLACE DOOR ELECTRICAL KEY OSCILLATOR


    1. Replace the door electrical key oscillator Click here.


    NEXT

  10. CHECK DOOR ELECTRICAL KEY OSCILLATOR OPERATION


    1. Check that the entry function operates normally.

      OK
      Operates normally.

    NG

    REPLACE FRONT DOOR OUTSIDE HANDLE Click here

    OK

    END (DOOR ELECTRICAL KEY OSCILLATOR IS DEFECTIVE)

  11. REPLACE FRONT DOOR OUTSIDE HANDLE


    1. Replace the front door outside handle Click here.


    NEXT

  12. CHECK FRONT DOOR OUTSIDE HANDLE OPERATION


    1. Check that the entry function operates normally.

      OK
      Operates normally.

    NG

    REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

    OK

    END (FRONT DOOR OUTSIDE HANDLE IS DEFECTIVE)