ENTRY AND START SYSTEM (for Entry Function) 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 floor) and electrical key transmitter cannot be performed; or 2) communication between the indoor electrical key oscillator (rear floor) and electrical key transmitter cannot be performed.

WIRING DIAGRAM

A0160XAE01

INSPECTION PROCEDURE

Note

When using the intelligent tester to troubleshoot: Connect the intelligent tester to the vehicle while the engine switch is off, 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 ENTRY AND START SYSTEM (ENTRY FUNCTION)


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

      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 ENTRY AND START SYSTEM (START FUNCTION)


    1. A0160WAE01

      Remove the battery of the electrical key transmitter Click here.

    2. With the brake pedal depressed, hold the key within 10 mm (0.328 in.) of 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 electrical key transmitter cannot be verified even though it is within 10 mm (0.328 in.) from the switch, 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 ENTRY AND START SYSTEM (Proceed to Power Source Mode does not Change) Click here

    OK

  3. CHECK WAVE ENVIRONMENT


    1. Install the battery to the electrical key transmitter Click here.

    2. Bring the electrical key transmitter near the indoor electrical key oscillator (front floor), 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 floor), communication is not possible.

    3. Bring the electrical key transmitter near the indoor electrical key oscillator (rear floor), 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 floor), 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. A0160PAE01

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


      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 / 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. A0160VNE01

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


      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 / 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.

        Tech Tips

        If the buzzer sounds, it can be determined that the indoor electrical key oscillators are operating normally.

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

    A

    REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

    B

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

    C

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


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

    2. A015YJHE07

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

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      P33-11 (CLG5) - P15-1 (CLG3) Always Below 1 Ω
      P33-12 (CG5B) - P15-3 (CLGB) Always Below 1 Ω
      P33-11 (CLG5) - Body ground Always 10 kΩ or higher
      P33-12 (CG5B) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  6. INSPECT INDOOR ELECTRICAL KEY OSCILLATOR (FRONT FLOOR)


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

      A0161MKE05
      Standard Voltage
      Tester Connection Tool Setting Switch Condition Specified Condition
      P33-11 (CLG5) - P33-12 (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 FLOOR) Click here

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


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

    2. A015YJHE08

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

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      P33-13 (CLG6) - Q30-1 (CLG4) Always Below 1 Ω
      P33-14 (CG6B) - Q30-3 (CLGB) Always Below 1 Ω
      P33-13 (CLG6) - Body ground Always 10 kΩ or higher
      P33-14 (CG6B) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  8. INSPECT INDOOR ELECTRICAL KEY OSCILLATOR (REAR FLOOR)


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

      A0161MKE06
      Standard Voltage
      Tester Connection Tool Setting Switch Condition Specified Condition
      P33-13 (CLG6) - P33-14 (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 (REAR FLOOR) Click here