SMART ENTRY AND START SYSTEM (for Entry Function) Room Oscillator does not Recognize Key

DESCRIPTION

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

WIRING DIAGRAM

A01EJYVE01

INSPECTION PROCEDURE

Note


  • The smart 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 smart entry and start system (for entry function) after confirming that the communication system is functioning properly.

  • When using the GTS with the engine switch off to troubleshoot: Connect the GTS to the DLC3, and turn a courtesy light switch on and off at 1.5-second intervals until communication between the GTS and vehicle begins.

  • Before replacing the certification ECU (smart key ECU assembly), refer to Service Bulletin.

PROCEDURE


  1. CHECK SMART ENTRY AND START SYSTEM (for Start Function)


    1. Remove the battery of the key Click here.

    2. A01EIUFE02
      Text in Illustration
      *1 Type A
      *2 Type B

      With the brake pedal depressed, touch the engine switch while facing 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 key cannot be verified even though it is within the specified range, the engine start check can be performed by removing the transmitter battery from the key and holding the transmitter close to 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 (for Start Function) (Proceed to How to Proceed with Troubleshooting) Click here

    OK

  2. CHECK WAVE ENVIRONMENT


    1. Install the battery to the key Click here.

    2. Bring the key near the indoor electrical key oscillator (for front floor), and check that the engine can be started.

      Note

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

    3. Bring the key near the indoor electrical key oscillator (for center floor), and check that the engine can be started.

      Note

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

    4. Bring the key near the indoor electrical key oscillator (for rear floor), and check that the engine can be started*.

      *: If the customize setting for Ignition Available Area is not set All, the engine will not start. Before performing this inspection, check that All has been selected Click here.

      Note

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

      Tech Tips


      • When the key 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 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

  3. PERFORM KEY DIAGNOSTIC MODE INSPECTION


    1. A01EINME01

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


      1. Connect the GTS to the DLC3.

      2. Turn the engine switch on (IG).

      3. Turn the GTS on.

      4. Enter the following menus: Body Electrical / Entry&Start / Utility / Communication Check (Key Diag Mode) / Overhead + Front Room.

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

    2. A01ELP6E01

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


      1. Connect the GTS to the DLC3.

      2. Turn the engine switch on (IG).

      3. Turn the GTS on.

      4. Enter the following menus: Body Electrical / Entry&Start / Utility / Communication Check (Key Diag Mode) / Overhead + Rear Room.

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

    3. A01EKGPE01

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


      1. Connect the GTS to the DLC3.

      2. Turn the engine switch on (IG).

      3. Turn the GTS on.

      4. Enter the following menus: Body Electrical / Entry&Start / Utility / Communication Check (Key Diag Mode) / Overhead + Back Door (inside).

      5. When the key 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
        Wireless door lock buzzer does not sound only for indoor electrical key oscillator (for front floor). A
        Wireless door lock buzzer does not sound only for indoor electrical key oscillator (for center floor). B
        Wireless door lock buzzer does not sound only for indoor electrical key oscillator (for rear floor). C
        Wireless door lock buzzer does not sound for all indoor electrical key oscillators. D
        Wireless door lock buzzer sounds for all indoor electrical key oscillators. E

    B

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

    C

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

    D

    CHECK TRANSMITTER BATTERY Click here

    E

    REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

    A

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


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

    2. A01EJ13E01
      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 Indoor Electrical Key Oscillator (for Front Floor))

      Disconnect the indoor electrical key oscillator (for front floor) connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      D25-7 (CLG5) - D27-1 (CLG3) Always Below 1 Ω
      D25-8 (CG5B) - D27-3 (CLGB) Always Below 1 Ω
      D25-7 (CLG5) - Body ground Always 10 kΩ or higher
      D25-8 (CG5B) - Body ground Always 10 kΩ or higher
      D27-1 (CLG3) - Body ground Always 10 kΩ or higher
      D27-3 (CLGB) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  5. INSPECT INDOOR ELECTRICAL KEY OSCILLATOR (for Front Floor (INPUT))


    1. A01EMHAE01
      Text in Illustration
      *1

      Front view of wire harness connector

      (to Indoor Electrical Key Oscillator (for Front Floor))

      Reconnect the certification ECU (smart key ECU assembly) connector.

    2. Check for pulses according to the value(s) in the table below.

      Standard
      Tester Connection Condition Specified Condition
      D27-1 (CLG3) - D27-3 (CLGB)

      • Engine switch off

      • All door closed

      • Key not in cabin

      • Door outside handle assembly (lock sensor) not touched

      		 No pulse generation
      D27-1 (CLG3) - D27-3 (CLGB)

      • Engine switch off

      • All door closed

      • Key not in cabin

      • Door outside handle assembly (lock sensor) touched

      		 Pulse generation

    NG

    REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

    OK

  6. REPLACE INDOOR ELECTRICAL KEY OSCILLATOR (for Front Floor)


    1. Replace the indoor electrical key oscillator (for front floor Click here.


    NEXT

  7. CHECK SMART ENTRY AND START SYSTEM (ENTRY IGNITION FUNCTION (for Front Floor))


    1. A01EINME01

      Inspect the detection area for the entry ignition function (for front floor). Make sure that the direction of the key is as shown in the illustration. When the key is in either of the 2 inspection points shown in the illustration, check that the engine can start.

      OK
      Engine starts normally.

    NG

    REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

    OK

    END (INDOOR ELECTRICAL KEY OSCILLATOR WAS DEFECTIVE)

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


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

    2. A01EJ13E04
      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 Indoor Electrical Key Oscillator (for Center Floor))

      Disconnect the indoor electrical key oscillator (for center floor) connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      D25-24 (CLG6) - L10-1 (CLG4) Always Below 1 Ω
      D25-25 (CG6B) - L10-3 (CLGB) Always Below 1 Ω
      D25-24 (CLG6) - Body ground Always 10 kΩ or higher
      D25-25 (CG6B) - Body ground Always 10 kΩ or higher
      L10-1 (CLG4) - Body ground Always 10 kΩ or higher
      L10-3 (CLGB) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  9. INSPECT INDOOR ELECTRICAL KEY OSCILLATOR (for Center Floor (INPUT))


    1. A01EMHAE03
      Text in Illustration
      *1

      Front view of wire harness connector

      (to Indoor Electrical Key Oscillator (for Center Floor))

      Reconnect the certification ECU (smart key ECU assembly) connector.

    2. Check for pulses according to the value(s) in the table below.

      Standard
      Tester Connection Condition Specified Condition
      L10-1 (CLG4) - L10-3 (CLGB)

      • Engine switch off

      • All door closed

      • Key not in cabin

      • Door outside handle assembly (lock sensor) not touched

      		 No pulse generation
      L10-1 (CLG4) - L10-3 (CLGB)

      • Engine switch off

      • All door closed

      • Key not in cabin

      • Door outside handle assembly (lock sensor) touched

      		 Pulse generation

    NG

    REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

    OK

  10. REPLACE INDOOR ELECTRICAL KEY OSCILLATOR (for Center Floor)


    1. Replace the indoor electrical key oscillator (for center floor) Click here.


    NEXT

  11. CHECK SMART ENTRY AND START SYSTEM (ENTRY IGNITION FUNCTION (for Center Floor))


    1. A01ELP6E01

      Inspect the detection area for the entry ignition function (for center floor). Make sure that the direction of the key is as shown in the illustration. When the key is in either of the 2 inspection points shown in the illustration, check that the engine can start.

      OK
      Engine starts normally.

    NG

    REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

    OK

    END (INDOOR ELECTRICAL KEY OSCILLATOR WAS DEFECTIVE)

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


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

    2. A01EJ13E02
      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 Indoor Electrical Key Oscillator (for Rear Floor))

      Disconnect the indoor electrical key oscillator (for rear floor) connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      D25-26 (CLG7) - M18-1 (CLG6) Always Below 1 Ω
      D25-27 (CG7B) - M18-3 (CLGB) Always Below 1 Ω
      D25-26 (CLG7) - Body ground Always 10 kΩ or higher
      D25-27 (CG7B) - Body ground Always 10 kΩ or higher
      M18-1 (CLG6) - Body ground Always 10 kΩ or higher
      M18-3 (CLGB) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  13. INSPECT INDOOR ELECTRICAL KEY OSCILLATOR (for Rear Floor (INPUT))


    1. A01EMHAE02
      Text in Illustration
      *1

      Front view of wire harness connector

      (to Indoor Electrical Key Oscillator (for Rear Floor))

      Reconnect the certification ECU (smart key ECU assembly) connector.

    2. Check for pulses according to the value(s) in the table below.

      Standard
      Tester Connection Condition Specified Condition
      M18-1 (CLG6) - M18-3 (CLGB)

      • Engine switch off

      • All door closed

      • Key not in cabin

      • Door outside handle assembly (lock sensor) not touched

      		 No pulse generation
      M18-1 (CLG6) - M18-3 (CLGB)

      • Engine switch off

      • All door closed

      • Key not in cabin

      • Door outside handle assembly (lock sensor) touched

      		 Pulse generation

    NG

    REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

    OK

  14. REPLACE INDOOR ELECTRICAL KEY OSCILLATOR (for Rear Floor)


    1. Replace the indoor electrical key oscillator (fro rear floor) Click here.


    NEXT

  15. CHECK SMART ENTRY AND START SYSTEM (ENTRY IGNITION FUNCTION (for Rear Floor))


    1. A01EKGPE01

      Inspect the detection area for the entry ignition function (for rear floor). Make sure that the direction of the key is as shown in the illustration. When the key is in either of the 2 inspection points shown in the illustration, check that the engine can start.

      OK
      Engine starts normally.

    NG

    REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

    OK

    END (INDOOR ELECTRICAL KEY OSCILLATOR WAS DEFECTIVE)

  16. CHECK TRANSMITTER BATTERY


    1. A01EM2HE01
      Text in Illustration
      *1 Type A
      *2 Type B

      Remove the battery from the key that does not operate. Attach a lead wire (0.6 mm (0.0236 in.) or less in diameter including wire sheath) with tape or equivalent to the negative (-) terminal Click here.

      Note

      Do not wrap a lead wire around the terminal, wedge it between the terminals, or solder it. Terminal may be deformed or damaged, and the battery will not be able to be installed correctly.

    2. Carefully pull the lead wire out from the position shown in the illustration and install the previously removed transmitter battery.

    3. Using an oscilloscope, check the transmitter battery voltage waveform.

      A01ELJUE01

      Tech Tips

      When measuring the battery voltage, while operating the lock switch of a door outside handle assembly, bring the key within the entry operating range to perform the measurement. For the entry operating range, refer to System Description Click here.

      Standard Voltage
      Item Content
      Tester Connection Battery positive (+) - Battery negative (-)
      Tool Setting 0.5 V/DIV., 100 ms/DIV.
      Condition Engine switch off, all doors closed and lock switch pushed
      Specified Condition 2.2 to 3.2 V (Refer to the waveform)

    NG

    REPLACE TRANSMITTER BATTERY Click here

    OK

  17. CHECK ELECTRICAL KEY TRANSMITTER


    1. Check if another registered key is available.

      Result
      Result Proceed to
      Another registered key is not available. A
      Another registered key is available. B

    B

    CHECK ELECTRICAL KEY TRANSMITTER (OPERATION) Click here

    A

  18. REGISTER ELECTRICAL KEY TRANSMITTER


    1. Register a new key.

      Tech Tips

      Refer to Service Bulletin.


    NEXT

  19. CHECK ELECTRICAL KEY TRANSMITTER (OPERATION)


    1. Using the key registered in the previous step or another registered key, check that the engine starts normally.

      OK
      Engine starts normally.

    NG

    REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

    OK

    REPLACE ELECTRICAL KEY TRANSMITTER (REPLACE MALFUNCTIONING KEY)