ENTRY AND START SYSTEM Key Luggage Compartment Lock-in Prevention Function does not Operate

DESCRIPTION

If the entry luggage compartment lock-in prevention function does not operate, either of the following may be the cause: 1) communication between the indoor electrical key oscillator (for luggage room) and electrical key transmitter cannot be performed; or 2) a malfunction in the certification ECU.

WIRING DIAGRAM

A001AALE06
*a Certification ECU
*b Indoor Electrical Key Oscillator (for Luggage Room)

PROCEDURE


  1. CHECK ENTRY AND START SYSTEM


    1. Check that the entry luggage compartment open function operates.

      Result
      Result Proceed to
      Entry luggage compartment open function operates A
      Entry luggage compartment open function does not operate B

    B

    GO TO DTC OF OTHER COMPONENTS Click here

    A

  2. CHECK WAVE ENVIRONMENT


    1. Bring the electrical key transmitter near the indoor electrical key oscillator (for luggage room), and check that the entry luggage compartment lock-in prevention function operates.

      Note

      If the key is brought within 0.2 m (0.6 ft.) of the indoor electrical key oscillator, communication is not possible.

      Tech Tips


      • When the electrical key transmitter is brought near the indoor electrical key oscillator (for luggage room), 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.

      Result
      Result Proceed to
      Operation check fails A
      Operation check is normal B

    B

    AFFECTED BY WAVE INTERFERENCE

    A

  3. KEY DIAGNOSTIC MODE


    1. A001AYRE04
      *1 Vehicle Center
      *2 Inspection Point

      Diagnostic mode inspection (luggage room inside 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 + Luggage /

      5. When the electrical key transmitter is held at the same height as the rear bumper upper surface and aligned with the center of the rear of the vehicle, check that the wireless door lock buzzer sounds.

        Tech Tips

        If the buzzer sounds, it can be determined that the luggage compartment interior transmitter is operating normally.

        OK
        Wireless door lock buzzer sounds

    A

    REPLACE CERTIFICATION ECU

    B

  4. CHECK HARNESS AND CONNECTOR (INDOOR ELECTRICAL KEY OSCILLATOR - CERTIFICATION ECU)

    A001B3XE04
    *1 Front view of wire harness connector: (to Certification ECU)
    *2 Front view of wire harness connector: (to Indoor Electrical Key Oscillator)

    1. Disconnect the S44 oscillator connector.

    2. Disconnect the L15 ECU connector.

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

      Standard resistance
      Tester Connection Condition Specified Condition
      S44-1 (CLG6) - L15-15 (CLG7) Always Below 1 Ω
      S44-3 (CLGB) - L15-16 (CG7B) Always Below 1 Ω
      S44-1 (CLG6) - Body ground Always 10 kΩ or higher
      S44-3 (CLGB) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  5. CHECK INDOOR ELECTRICAL KEY OSCILLATOR (OPERATION)


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

    2. Check that the entry function operates normally.

      OK
      Operates normally

    OK

    END (INDOOR ELECTRICAL KEY OSCILLATOR IS DEFECTIVE)

    NG

    REPLACE CERTIFICATION ECU