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

DESCRIPTION

When the rear door LH 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 LH, or 3) certification ECU (smart key ECU assembly).

WIRING DIAGRAM

A01EQ93E07

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
      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 LH 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.


      1. for LHD:

        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

        		 -

      2. for RHD:

        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

        		 -
      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. A01EQ9HE02

      Bring the electrical key transmitter near the rear door outside handle LH, and perform a rear door LH 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 LH, 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. A01ERJ8E01

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


      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 + Driver Side Rear.

        for RHD:

        Select: Body / Entry&Start / Key Communication Check / Overhead + Passenger 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 LH 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. A01EN7FE11

      Disconnect the E30 ECU connector.

    2. Disconnect the z28 oscillator connector.

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

      Standard Resistance
      for LHD
      Tester Connection Condition Specified Condition
      E30-1 (SEL3) - z28-4 (SEL) Always Below 1 Ω
      E30-8 (CLG3) - z28-10 (CLG) Always Below 1 Ω
      E30-9 (CG3B) - z28-5 (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
      for RHD
      Tester Connection Condition Specified Condition
      E30-2 (SEL4) - z28-4 (SEL) Always Below 1 Ω
      E30-10 (CLG4) - z28-10 (CLG) Always Below 1 Ω
      E30-11 (CG4B) - z28-5 (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

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

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


    1. A01ENIGE46

      Disconnect the z27 handle connector.

    2. Disconnect the z28 oscillator connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      z27-2 (ANT2) - z28-8 (ANT2) Always Below 1 Ω
      z27-5 (ANT1) - z28-3 (ANT1) Always Below 1 Ω
      z27-2 (ANT2) - Body ground Always 10 kΩ or higher
      z27-5 (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. A01ENKRE17

      Disconnect the z28 oscillator connector.

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

      Standard Voltage
      Tester Connection Condition Specified Condition
      z28-1 (B) - z28-7 (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 REAR DOOR OUTSIDE HANDLE Click here

    OK

    END (DOOR ELECTRICAL KEY OSCILLATOR IS DEFECTIVE)

  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.

    NG

    REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

    OK

    END (REAR DOOR OUTSIDE HANDLE IG DEFECTIVE)