SMART ENTRY AND START SYSTEM Driver Side Door Entry Lock and Unlock Functions do not Operate

DESCRIPTION

When the driver 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

A017BYVE08

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 ON INTELLIGENT TESTER (DOOR OUTSIDE HANDLE)


    1. Connect the intelligent tester to the DLC3.

    2. Turn the engine switch on (IG).

    3. Turn the tester on.

    4. Select D Touch Sensor or 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 Touch Sensor Driver side door touch sensor / ON or OFF

      ON: Touch sensor is touched

      OFF: Touch sensor is not touched

      		 -
      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, each item changes between ON and OFF according to the chart above.

    NG

    REPLACE FRONT DOOR OUTSIDE HANDLE Click here

    OK

  3. CHECK WAVE ENVIRONMENT


    1. A017G1KE01

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

      Note

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

      Tech Tips


      • When the electrical key transmitter is brought near the driver 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.

      OK
      Entry functions operate normally.

    NG

    PERFORM KEY DIAGNOSTIC MODE INSPECTION Click here

    OK

    AFFECTED BY WAVE INTERFERENCE

  4. PERFORM KEY DIAGNOSTIC MODE INSPECTION


    1. A017G1KE03

      Diagnostic mode inspection (driver door electrical key oscillator)


      1. Connect the intelligent tester to the DLC3.

      2. Turn the engine switch on (IG).

      3. Turn the 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 door electrical key oscillator is operating normally.

        OK
        Wireless door lock buzzer sounds.

    NG

    CHECK HARNESS AND CONNECTOR (CERTIFICATION ECU - DOOR ELECTRICAL KEY OSCILLATOR) Click here

    OK

    REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

  5. CHECK HARNESS AND CONNECTOR (CERTIFICATION ECU - DOOR ELECTRICAL KEY OSCILLATOR)


    1. A017GA4E07

      Disconnect the certification ECU (smart key ECU assembly) and door electrical key oscillator connectors.

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

      Standard resistance
      for LHD
      Tester Connection Condition Specified Condition
      D36-5 (SEL1) - z14-4 (SEL) Always Below 1 Ω
      D36-34 (CG1B) - z14-5 (CLGB) Always Below 1 Ω
      D36-5 (SEL1) - Body ground Always 10 kΩ or higher
      D36-34 (CG1B) - Body ground Always 10 kΩ or higher
      for RHD
      Tester Connection Condition Specified Condition
      D36-5 (SEL1) - z16-4 (SEL) Always Below 1 Ω
      D36-34 (CG1B) - z16-5 (CLGB) Always Below 1 Ω
      D36-5 (SEL1) - Body ground Always 10 kΩ or higher
      D36-34 (CG1B) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

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


    1. A017CMKE31

      Remove the front door outside handle Click here.

    2. Disconnect the door antenna connector.

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

      Standard resistance
      for LHD
      Tester Connection Condition Specified Condition
      z13-2 (ANT2) - z14-8 (ANT2) Always Below 1 Ω
      z13-5 (ANT1) - z14-3 (ANT1) Always Below 1 Ω
      z13-2 (ANT2) - Body ground Always 10 kΩ or higher
      z13-5 (ANT1) - Body ground Always 10 kΩ or higher
      for RHD
      Tester Connection Condition Specified Condition
      z15-2 (ANT2) - z16-8 (ANT2) Always Below 1 Ω
      z15-5 (ANT1) - z16-3 (ANT1) Always Below 1 Ω
      z15-2 (ANT2) - Body ground Always 10 kΩ or higher
      z15-5 (ANT1) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  7. INSPECT FUSE (ECU-B)


    1. Remove the ECU-B fuse from the engine room junction block.

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

      Standard resistance
      Tester Connection Condition Specified Condition
      ECU-B fuse Always Below 1 Ω

    NG

    REPLACE FUSE (ECU-B)

    OK

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


    1. A017D8PE12

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

      Standard voltage
      for LHD
      Tester Connection Condition Specified Condition
      z14-1 (+B) - z14-7 (GND) Always 11 to 14 V
      for RHD
      Tester Connection Condition Specified Condition
      z16-1 (+B) - z16-7 (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 functions operate normally.

      OK
      Entry functions operate normally.

    NG

    REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

    OK

    END (DOOR ELECTRICAL KEY OSCILLATOR IS DEFECTIVE)