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

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DTC Code DTC Name
  Back Door Entry Lock and Unlock Functions do not Operate
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DESCRIPTION

When the back door entry lock and unlock functions do not operate, one of the following may be malfunctioning: 1) power door lock control system; 2) outside electrical key oscillator (for rear side); 3) certification ECU (smart key ECU assembly), or 4) back door opener switch assembly.

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WIRING DIAGRAM

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INSPECTION PROCEDURE

Note:

  • The entry and start system (for entry function) uses a multiplex communication system (LIN communication system) and CAN communication system. Inspect the communication function by following How to Proceed with Troubleshooting (Click here). Troubleshoot the entry and start system (for entry function) after confirming that the communication system is functioning properly.

  • Confirm that another key is not in the cabin.

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PROCEDURE


  1. Click here

    CHECK POWER DOOR LOCK OPERATION


    1. When the door control switch on the master switch assembly is operated, check that the doors unlock and lock according to switch operation (Click here).

      OK
      Door locks operate normally.

  2. Click here

    READ VALUE USING INTELLIGENT TESTER (BACK DOOR OPENER 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 / Entry & Start / Data List.

    5. Read the Data List according to the display on the intelligent tester.

      Table 1. Entry & Start (Certification ECU (Smart Key ECU Assembly))
      Tester Display Measurement Item/Display Normal Condition Diagnostic Note
      Tr/B-Door Lock SW Back door opener switch assembly (lock switch) / ON or OFF

      ON: Back door opener switch assembly (lock switch) pushed

      OFF: Back door opener switch assembly (lock switch) not pushed

      		 -
      Tr/B-Door Unlock SW Back door opener switch assembly (opener switch) / ON or OFF

      ON: Back door opener switch assembly (opener switch) pushed

      OFF: Back door opener switch assembly (opener switch) not pushed

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

  3. Click here

    CHECK WAVE ENVIRONMENT


    1. A019PLJE02

      Bring the key near the outside electrical key oscillator (for rear side), and perform an entry back door open and entry lock functions check.

      Note:

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

      Tip:

      • When pressing the lock switch and pressing the opener switch, hold the electrical key transmitter about 1 m (3.28 ft.) above the ground and about 0.3 m (0.984 ft.) away from the vehicle as shown in the illustration.

      • When the key is brought near the outside electrical key oscillator (for rear side), the possibility of wave interference decreases, and it can be determined if wave interference is causing the problem symptom.

      • If the operation 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.

      OK
      Entry functions operate normally.

  4. Click here

    PERFORM KEY DIAGNOSTIC MODE INSPECTION


    1. A019PLJE01

      Diagnostic mode inspection (outside electrical key oscillator (for rear side))


      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 / Utility / Key Communication Check / Overhead + Back Door.

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

        Tip:

        • Hold the electrical key transmitter at the same height as the rear bumper upper surface and align with the center of the rear of the vehicle (0.7 to 1.0 m (2.30 to 3.28 ft.)). Make sure that the direction of the key is as shown in the illustration.

        • If the buzzer sounds, it can be determined that the outside electrical key oscillator (for rear side) is operating normally.

        OK
        Wireless door lock buzzer sounds.

  5. Click here

    CHECK HARNESS AND CONNECTOR (CERTIFICATION ECU - OUTSIDE ELECTRICAL KEY OSCILLATOR)


    1. Disconnect the certification ECU (smart key ECU assembly) connector.

    2. A019P9ZE03

      Disconnect the outside electrical key oscillator (for rear side) connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      O1-19 (CLG8) - V1-1 (CLG5) Always Below 1 Ω
      O1-20 (CG8B) - V1-2 (CLGB) Always Below 1 Ω
      O1-19 (CLG8) - Body ground Always 10 kΩ or higher
      O1-20 (CG8B) - Body ground Always 10 kΩ or higher
      V1-1 (CLG5) - Body ground Always 10 kΩ or higher
      V1-2 (CLGB) - Body ground Always 10 kΩ or higher
      Table 2. Text in Illustration
      *1

      Front view of wire harness connector

      (to Certification ECU (Smart Key ECU Assembly))
      *2

      Front view of wire harness connector

      (to Outside Electrical Key Oscillator (for Rear Side))

  6. Click here

    REPLACE OUTSIDE ELECTRICAL KEY OSCILLATOR (for Rear Side)Click here

  7. Click here

    INSPECT OUTSIDE ELECTRICAL KEY OSCILLATOR (for Rear Side)


    1. A019KT6E03

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      V1-1 (CLG5) - V1-2 (CLGB) Always Below 1 Ω
      Table 3. Text in Illustration
      *1

      Component without harness connected

      (Outside Electrical Key Oscillator (for Rear Side))

  8. Click here

    CHECK HARNESS AND CONNECTOR (BACK DOOR OPENER SWITCH - BODY GROUND)


    1. A019K9GE02

      Disconnect the back door opener switch assembly connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      Y11-2 (E) - Body ground Always Below 1 Ω
      Table 4. Text in Illustration
      *1

      Front view of wire harness connector

      (to Back Door Opener Switch Assembly))

  9. Click here

    GO TO POWER DOOR LOCK CONTROL SYSTEM (Proceed to Problem Symptoms Table)Click here

  10. Click here

    AFFECTED BY WAVE INTERFERENCE

  11. Click here

    REPAIR OR REPLACE HARNESS OR CONNECTOR

  12. Click here

    REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

  13. Click here

    REPLACE BACK DOOR OPENER SWITCH ASSEMBLYClick here