ENTRY AND START SYSTEM 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 LH electrical key oscillator, or 3) certification ECU.

WIRING DIAGRAM

A01GKN6E22
A01GKN6E23

INSPECTION PROCEDURE

PROCEDURE


  1. CHECK POWER DOOR LOCK OPERATION


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

      Result
      Result Proceed to
      Door locks operate normally OK
      Door locks do not operate normally NG

    NG

    GO TO POWER DOOR LOCK CONTROL SYSTEM Click here

    OK

  2. READ VALUE USING INTELLIGENT TESTER (DOOR LOCK POSITION SWITCH)


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

      Rear Left Door (Rear door ECU LH)
      Tester Display Measurement Item/Display Normal Condition Diagnostic Note
      Lock Position SW Rear LH side door lock position switch signal / ON or OFF

      ON: Rear LH side door is unlocked

      OFF: Rear LH side door is locked

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

    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 (ENTRY SENSOR, OUTSIDE HANDLE TRIGGER SW)


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

      Rear Left Door (Rear door ECU LH)
      Tester Display Measurement Item/Display Normal Condition Diagnostic Note
      Entry Sensor Rear LH side door touch sensor / ON or OFF

      ON: Rear LH side sensor door is touched

      OFF: Rear LH side door sensor is not touched

      		 -
      Outside Handle Trigger SW Rear LH side door outside handle lock switch / ON or OFF

      ON: Rear LH side door outside handle lock switch is pushed

      OFF: Rear LH side door outside handle lock switch is not pushed

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

    B

    CHECK WAVE ENVIRONMENT Click here

    A

  4. CHECK REAR DOOR ECU LH

    A01GHNVE03

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

      Standard voltage
      Tester Connection Condition Specified Condition
      O14-12 (OSCB) - O14-15 (OSCE) Always 11 to 14 V

    NG

    REPLACE REAR DOOR ECU LH Click here

    OK

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

    A01GNLHE78

    1. Disconnect the O25 oscillator connector.

    2. Disconnect the O14 ECU connector.

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

      Standard resistance
      Tester Connection Condition Specified Condition
      O25-1 (B) - O14-12 (OSCB) Always Below 1 Ω
      O25-6 (SENS) - O14-14 (SENS) Always Below 1 Ω
      O25-7 (GND) - O14-15 (OSCE) Always Below 1 Ω
      O25-1 (B) - Body ground Always 10 kΩ or higher
      O25-6 (SENS) - Body ground Always 10 kΩ or higher
      O25-7 (GND) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

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

    A01GLUBE14

    1. Disconnect the O25 oscillator connector.

    2. Disconnect the O26 handle connector.

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

      Standard resistance
      Tester Connection Condition Specified Condition
      O25-2 (SGT8) - O26-6 (SGT7) Always Below 1 Ω
      O25-9 (TRG-) - O26-1 (TRG-) Always Below 1 Ω
      O25-2 (SGT8) - Body ground Always 10 kΩ or higher
      O25-9 (TRG-) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  7. CHECK HARNESS AND CONNECTOR (REAR DOOR ECU LH - REAR DOOR OUTSIDE HANDLE LH)

    A01GL2DE59

    1. Disconnect the O14 ECU connector.

    2. Disconnect the O26 handle connector.

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

      Standard resistance
      Tester Connection Condition Specified Condition
      O26-3 (TRG+) - O14-20 (TRG+) Always Below 1 Ω
      O26-3 (TRG+) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  8. CHECK DOOR ELECTRICAL KEY OSCILLATOR (OPERATION)


    1. Replace the door electrical key oscillator with a new one or normally functioning one Click here.

    2. Check that the entry function operates normally.

      OK
      Operates normally

    NG

    CHECK REAR DOOR OUTSIDE HANDLE LH (OPERATION) Click here

    OK

    END (DOOR ELECTRICAL KEY OSCILLATOR IS DEFECTIVE)

  9. CHECK REAR DOOR OUTSIDE HANDLE LH (OPERATION)


    1. Replace the rear door outside handle LH with a new one or normally functioning one Click here.

    2. Check that the entry function operates normally.

      OK
      Operates normally

    NG

    REPLACE REAR DOOR ECU LH Click here

    OK

    END (REAR DOOR OUTSIDE HANDLE LH IS DEFECTIVE)

  10. CHECK WAVE ENVIRONMENT


    1. A01GHOTE01

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

      Note

      If the key is brought within 0.2 m (0.6 ft.) of the door handle, communication is not possible.

      Tech Tips


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

      • If the inspection result is that 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.


    B

    AFFECTED BY WAVE INTERFERENCE

    A

  11. KEY DIAGNOSTIC MODE


    1. A01GHOTE02

      Diagnostic mode inspection (rear door LH outside 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:


        1. Intelligent tester - 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 left seat outside transmitter is operating normally.

        OK
        Wireless door lock buzzer sounds

    NG

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

    OK

    END (CERTIFICATION ECU IS DEFECTIVE)

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

    A01GKB7E15

    1. for LHD:


      1. Disconnect the O25 oscillator connector.

      2. Disconnect the L16 ECU connector.

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

        Standard resistance
        Tester Connection Condition Specified Condition
        O25-5 (CLGB) - L16-9 (CG3B) Always Below 1 Ω
        O25-10 (CLG) - L16-8 (CLG3) Always Below 1 Ω
        O25-5 (CLGB) - Body ground Always 10 kΩ or higher
        O25-10 (CLG) - Body ground Always 10 kΩ or higher
      A01GKB7E16

    2. for RHD:


      1. Disconnect the O25 oscillator connector.

      2. Disconnect the L16 ECU connector.

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

        Standard resistance
        Tester Connection Condition Specified Condition
        O25-5 (CLGB) - L16-11 (CG4B) Always Below 1 Ω
        O25-10 (CLG) - L16-10 (CLG4) Always Below 1 Ω
        O25-5 (CLGB) - Body ground Always 10 kΩ or higher
        O25-10 (CLG) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  13. CHECK HARNESS AND CONNECTOR (DOOR ELECTRICAL KEY OSCILLATOR - REAR DOOR ECU LH)

    A01GNLHE79

    1. Disconnect the O14 ECU connector.

    2. Disconnect the O25 oscillator connector.

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

      Standard resistance
      Tester Connection Condition Specified Condition
      O25-4 (SEL) - O14-16 (SEL) Always Below 1 Ω
      O25-4 (SEL) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

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

    A01GLUBE15

    1. Disconnect the O25 oscillator connector.

    2. Disconnect the O26 handle connector.

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

      Standard resistance
      Tester Connection Condition Specified Condition
      O25-3 (ANT7) - O26-5 (ANT7) Always Below 1 Ω
      O25-8 (ANT8) - O26-2 (ANT8) Always Below 1 Ω
      O25-3 (ANT7) - Body ground Always 10 kΩ or higher
      O25-8 (ANT8) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  15. CHECK DOOR ELECTRICAL KEY OSCILLATOR (OPERATION)


    1. Replace the door electrical key oscillator with a new one or normally functioning one Click here.

    2. Check that the entry function operates normally.

      OK
      Operates normally

    NG

    CHECK REAR DOOR OUTSIDE HANDLE LH (OPERATION) Click here

    OK

    END (DOOR ELECTRICAL KEY OSCILLATOR IS DEFECTIVE)

  16. CHECK REAR DOOR OUTSIDE HANDLE LH (OPERATION)


    1. Replace the rear door outside handle LH with a new one or normally functioning one Click here.

    2. Check that the entry function operates normally.

      OK
      Operates normally

    NG

    CHECK REAR DOOR ECU LH (OPERATION) Click here

    OK

    END (REAR DOOR OUTSIDE HANDLE LH IS DEFECTIVE)

  17. CHECK REAR DOOR ECU LH (OPERATION)


    1. Replace the rear door ECU LH with a new one or normally functioning one Click here.

    2. Check that the entry function operates normally.

      OK
      Operates normally

    NG

    REPLACE CERTIFICATION ECU

    OK

    END (REAR DOOR ECU LH IS DEFECTIVE)