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

DESCRIPTION

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

Tech Tips

For vehicles with entry function for rear doors.

WIRING DIAGRAM

A01WZT8E12

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.


      1. for LHD

        Main Body
        Tester Display Measurement Item/Range Normal Condition Diagnostic Note
        PR Door Lock Position SW Passenger side rear door lock position switch signal / ON or OFF

        ON: Passenger side rear door unlocked

        OFF: Passenger side rear door locked

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

      2. for RHD

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

        ON: Driver side rear door unlocked

        OFF: Driver side rear 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 Rear Door RH LOCK/UNLOCK Functions do not Operate) Click here

    OK

  3. READ VALUE USING INTELLIGENT TESTER (TOUCH SENSOR)


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


      1. for LHD

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

        ON: Touch sensor touched

        OFF: Touch sensor not touched

        		 -
        Pr-Door Trigger Switch Passenger side rear door outside handle lock switch / ON or OFF

        ON: Entry lock switch pushed

        OFF: Entry lock switch not pushed

        		 -

      2. for RHD

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

        ON: Touch sensor touched

        OFF: Touch sensor not touched

        		 -
        Dr-Door Trigger Switch Driver side rear 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. A01X5I1E01
      *1 Approximately 0.3 m (0.984 ft.)

      Bring the electrical key transmitter near the rear door outside handle RH, and perform a rear door RH 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 rear door outside handle RH, 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. A01XBWZE01
      *1 0.7 to 1.0 m (2.30 to 3.28 ft.)

      Diagnostic mode inspection (rear door electrical key oscillator RH).


      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:

        for LHD

        Select: Body / Entry & Start / Key Communication Check / Overhead + Passenger Side Rear.

        for RHD

        Select: Body / Entry & Start / Key Communication Check / Overhead + Driver Side Rear.

      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 rear RH seat outside transmitter is operating normally.

        OK
        Wireless door lock buzzer sounds.

    OK

    REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

    NG

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


    1. Disconnect the E30 ECU connector.

      A01X64CE04

    2. Disconnect the z26 oscillator connector.

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

      Standard Resistance
      for LHD
      Tester Connection Condition Specified Condition
      E30-2 (SEL4) - z26-4 (SEL) Always Below 1 Ω
      E30-10 (CLG4) - z26-10 (CLG) Always Below 1 Ω
      E30-11 (CG4B) - z26-5 (CLGB) Always Below 1 Ω
      E30-2 (SEL4) - Body ground Always 10 kΩ or higher
      E30-10 (CLG4) - Body ground Always 10 kΩ or higher
      E30-11 (CG4B) - Body ground Always 10 kΩ or higher
      for RHD
      Tester Connection Condition Specified Condition
      E30-1 (SEL3) - z26-4 (SEL) Always Below 1 Ω
      E30-8 (CLG3) - z26-10 (CLG) Always Below 1 Ω
      E30-9 (CG3B) - z26-5 (CLGB) Always Below 1 Ω
      E30-1 (SEL3) - Body ground Always 10 kΩ or higher
      E30-8 (CLG3) - Body ground Always 10 kΩ or higher
      E30-9 (CG3B) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

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


    1. Disconnect the z25 handle connector.

      A01X8Y6E04
      *1 Front view of wire harness connector: (to Rear Door Outside Handle)
      *2 Front view of wire harness connector: (to Door Electrical Key Oscillator)

    2. Disconnect the z26 oscillator connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      z25-2 (ANT2) - z26-8 (ANT2) Always Below 1 Ω
      z25-5 (ANT1) - z26-3 (ANT1) Always Below 1 Ω
      z25-2 (ANT2) - Body ground Always 10 kΩ or higher
      z25-5 (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. A01WZDFE01
      *1 Front view of wire harness connector: (to Door Electrical Key Oscillator)

      Disconnect the z26 oscillator connector.

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

      Standard Voltage
      Tester Connection Condition Specified Condition
      z26-1 (B) - z26-7 (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.

    OK

    END (DOOR ELECTRICAL KEY OSCILLATOR IS DEFECTIVE)

    NG

  11. REPLACE REAR DOOR OUTSIDE HANDLE


    1. Replace the rear door outside handle Click here.


    NEXT

  12. CHECK REAR DOOR OUTSIDE HANDLE OPERATION


    1. Check that the entry function operates normally.

      OK
      Operates normally.

    OK

    END (REAR DOOR OUTSIDE HANDLE IS DEFECTIVE)

    NG

    REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)