SMART ENTRY AND START SYSTEM Room Oscillator does not Recognize Key

DESCRIPTION

If the room oscillator does not recognize a key, either of the following may be the cause: 1) communication between the indoor electrical key oscillator (front) and electrical key transmitter cannot be performed; or 2) communication between the indoor electrical key oscillator (center) and electrical key transmitter cannot be performed; or 3) communication between the indoor electrical key oscillator (rear) and electrical key transmitter cannot be performed.

WIRING DIAGRAM

A017C3ME05

INSPECTION PROCEDURE

Note


  • Before performing the inspection, check that there are no problems related to "CAN COMMUNICATION SYSTEM" and "LIN COMMUNICATION SYSTEM".

  • When using the intelligent tester with the engine switch off to troubleshoot: Connect the intelligent tester to the vehicle, and turn a courtesy light switch on and off at 1.5-second intervals until communication between the tester and vehicle begins.

PROCEDURE


  1. CHECK SMART ENTRY AND START SYSTEM (ENTRY FUNCTION)


    1. Check that entry lock and unlock functions can be operated at each door.

      OK
      Entry lock and unlock functions operate normally.

    NG

    GO TO OTHER PROBLEM (PROCEED TO PROBLEM SYMPTOMS TABLE FOR EACH DOOR) Click here

    OK

  2. CHECK SMART ENTRY AND START SYSTEM (START FUNCTION)


    1. Remove the battery of the electrical key transmitter Click here.

      A017BOOE02

    2. With the brake pedal depressed, face the logo side of the key to the engine switch.

    3. When operating the engine switch, check whether the power source mode changes.

      OK
      Power source mode changes.

      Tech Tips


      • When the electrical key transmitter cannot be verified even though it is in the start operating range, the engine start check can be performed by removing the transmitter battery from the electrical key transmitter and holding the transmitter against the engine switch.

      • When performing the check, if the power source mode changes, there is a problem with key certification inside the cabin.


    NG

    GO TO SMART ENTRY AND START SYSTEM (Power Source Mode does not Change) Click here

    OK

  3. CHECK WAVE ENVIRONMENT


    1. Install the battery to the electrical key transmitter.

    2. A017DK5E01

      Bring the electrical key transmitter near the indoor electrical key oscillator (front), and perform an engine start check.

      Note

      If the key is brought within 0.2 m (0.656 ft.) of the indoor electrical key oscillator (front), communication is not possible.

    3. A017E72E01

      Bring the electrical key transmitter near the indoor electrical key oscillator (center), and perform an engine start check.

      Note

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

    4. A017D1CE01

      Bring the electrical key transmitter near the indoor electrical key oscillator (rear), and perform an engine start check.

      Note

      If the key is brought within 0.2 m (0.656 ft.) of the indoor electrical key oscillator (luggage compartment), communication is not possible.

      Tech Tips


      • When the electrical key transmitter is brought near the indoor electrical key oscillator, 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.

      OK
      The engine starts.

    NG

    PERFORM KEY DIAGNOSTIC MODE INSPECTION Click here

    OK

    AFFECTED BY WAVE INTERFERENCE

  4. PERFORM KEY DIAGNOSTIC MODE INSPECTION


    1. A017DK5E01

      Diagnostic mode inspection (indoor electrical key oscillator (front))


      1. Connect the intelligent tester to the DLC3.

      2. Turn the engine switch on (IG).

      3. Turn the tester on.

      4. Enter the following menus:

        Body / Entry & Start / Key Communication Check / Overhead + Front Room.

      5. When the electrical key transmitter is placed on the driver seat or front passenger seat cushion, check that the wireless door lock buzzer sounds.

    2. A017E72E01

      Diagnostic mode inspection (indoor electrical key oscillator (center))


      1. Connect the intelligent tester to the DLC3.

      2. Turn the engine switch on (IG).

      3. Turn the tester on.

      4. Enter the following menus:

        Body / Entry & Start / Key Communication Check / Overhead + Rear Room.

      5. When the electrical key transmitter is placed on the rear seat cushion, check that the wireless door lock buzzer sounds.

    3. A017D1CE01

      Diagnostic mode inspection (indoor electrical key oscillator (rear))


      1. Connect the intelligent tester to the DLC3.

      2. Turn the engine switch on (IG).

      3. Turn the tester on.

      4. Enter the following menus:

        Body / Entry & Start / Key Communication Check / Overhead + Back Door (inside).

      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 indoor electrical key oscillators are operating normally.

        Result
        Result Proceed to
        Front, center and rear operation checks are normal or fail A
        Center operation check is normal B
        Rear operation check is normal C
        Front operation check is normal D

    A

    REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

    B

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

    C

    INSPECT INDOOR ELECTRICAL KEY OSCILLATOR (CENTER) Click here

    D

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


    1. A017G2SE04

      Disconnect the certification ECU (smart key ECU assembly) and indoor electrical key oscillator front connectors.

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

      Standard resistance
      Tester Connection Condition Specified Condition
      D36-11 (CLG5) - N14-1 (CLG3) Always Below 1 Ω
      D36-12 (CG5B) - N14-3 (CLGB) Always Below 1 Ω
      D36-11 (CLG5) - Body ground Always 10 kΩ or higher
      D36-12 (CG5B) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  6. INSPECT INDOOR ELECTRICAL KEY OSCILLATOR (FRONT)


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

      A017DG6E05
      Standard voltage
      Tester Connection Tool Setting Condition Specified Condition
      D36-11 (CLG5) - D36-12 (CG5B) 2 V/DIV, 2 μs/DIV. (Reference) Engine switch on (IG) Pulse generation

    NG

    REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

    OK

    REPLACE INDOOR ELECTRICAL KEY OSCILLATOR (FRONT) Click here

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


    1. A017G2SE05

      Disconnect the certification ECU (smart key ECU assembly) and indoor electrical key oscillator center connectors.

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

      Standard resistance
      Tester Connection Condition Specified Condition
      D36-13 (CLG6) - O16-1 (CLG4) Always Below 1 Ω
      D36-14 (CG6B) - O16-3 (CLGB) Always Below 1 Ω
      D36-13 (CLG6) - Body ground Always 10 kΩ or higher
      D36-14 (CG6B) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  8. INSPECT INDOOR ELECTRICAL KEY OSCILLATOR (CENTER)


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

      A017DG6E06
      Standard voltage
      Tester Connection Tool Setting Condition Specified Condition
      D36-13 (CLG6) - D36-14 (CG6B) 2 V/DIV, 2 μs/DIV. (Reference) Engine switch on (IG) Pulse generation

    NG

    REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

    OK

    REPLACE INDOOR ELECTRICAL KEY OSCILLATOR (CENTER) Click here

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


    1. A017G2SE06

      Disconnect the certification ECU (smart key ECU assembly) and indoor electrical key oscillator rear connectors.

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

      Standard resistance
      Tester Connection Condition Specified Condition
      D36-15 (CLG7) - N13-1 (CLG6) Always Below 1 Ω
      D36-16 (CG7B) - N13-3 (CLGB) Always Below 1 Ω
      D36-15 (CLG7) - Body ground Always 10 kΩ or higher
      D36-16 (CG7B) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  10. INSPECT INDOOR ELECTRICAL KEY OSCILLATOR (REAR)


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

      A017DG6E07
      Standard voltage
      Tester Connection Tool Setting Condition Specified Condition
      D36-15 (CLG7) - D36-16 (CG7B) 2 V/DIV, 2 μs/DIV. (Reference) Engine switch on (IG) Pulse generation

    NG

    REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

    OK

    REPLACE INDOOR ELECTRICAL KEY OSCILLATOR (REAR) Click here