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 (front side) and electrical key transmitter cannot be performed; or 2) communication between the indoor electrical key oscillator (rear side) and electrical key transmitter cannot be performed.

WIRING DIAGRAM

A011B5NE05

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.

  • When using the intelligent tester with the engine switch off to troubleshoot: Connect the intelligent tester to the DLC3, 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 (FOR START FUNCTION)


    1. A0118QNE01

      Remove the battery of the electrical key transmitter Click here.

    2. With the brake pedal depressed (for Continuously Variable Transaxle) or clutch pedal depressed (for Manual Transaxle), hold the key close to the engine switch 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 the specified range, the engine start check can be performed by removing the transmitter battery from the electrical key transmitter 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.

      Result
      Result Proceed to
      Engine cannot be started. A
      Engine can be started. B

    B

    CHECK WAVE ENVIRONMENT Click here

    A

  2. CHECK HARNESS AND CONNECTOR (CONTROL ECU - ENGINE SWITCH)


    1. Disconnect the power management control ECU or power source control ECU connector.

      A011ADKE01
      Text in Illustration
      *1

      Front view of wire harness connector

      (to Power Management Control ECU)

      		 *4 For 1KR-FE and 1NR-FE
      *2

      Front view of wire harness connector

      (to Power Source Control ECU)

      		 *5 For 1ND-TV
      *3

      Front view of wire harness connector

      (to Engine Switch)

      		 - -

    2. Disconnect the engine switch connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      D27-7 (SS1) - D38-18 (SSW1)*1 Always Below 1 Ω
      D27-7 (SS1) - D73-18 (SSW1)*2 Always Below 1 Ω
      D27-2 (SS2) - D38-17 (SSW2)*1 Always Below 1 Ω
      D27-2 (SS2) - D73-17 (SSW2)*2 Always Below 1 Ω
      D27-7 (SS1) - Body ground Always 10 kΩ or higher
      D27-2 (SS2) - Body ground Always 10 kΩ or higher

      • *1: for 1KR-FE and 1NR-FE

      • *1: for 1ND-TV


    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  3. INSPECT ENGINE SWITCH


    1. A011BQQE10
      Text in Illustration
      *1

      Component with harness connected

      (Engine Switch)

      Reconnect the engine switch connector.

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

      Standard Resistance
      Tester Connection Switch Condition Specified Condition
      7 (SS1) - 5 (GND) Engine switch pushed Below 1 Ω
      Engine switch not pushed 10 kΩ or higher
      2 (SS2) - 5 (GND) Engine switch pushed Below 1 Ω
      Engine switch not pushed 10 kΩ or higher
      5 (GND) - Body ground Always Below 1 Ω
      Result
      Result Proceed to
      NG A
      OK (for 1KR-FE and 1NR-FE) B
      OK (for 1ND-TV) C

    B

    REPLACE POWER MANAGEMENT CONTROL ECU Click here

    C

    REPLACE POWER SOURCE CONTROL ECU Click here

    A

    REPLACE ENGINE SWITCH Click here

  4. 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 side), 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 electrical key transmitter near the indoor electrical key oscillator (inside luggage), and check that the engine can be started*.

      *: If the customize setting for Ignition Available Area is not set to 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 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 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

  5. PERFORM KEY DIAGNOSTIC MODE INSPECTION


    1. A0118JOE01

      Diagnostic mode inspection (indoor electrical key oscillator (front 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 / 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. A011BPZE01

      Diagnostic mode inspection (indoor electrical key oscillator (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 / 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 side operation fails A
        Inside luggage operation fails B
        Front side and inside luggage operations are normal C
        Front side and rear side operations fail D

    B

    CHECK HARNESS AND CONNECTOR (CERTIFICATION ECU - INDOOR OSCILLATOR (REAR SIDE)) Click here

    C

    CHECK ELECTRICAL KEY TRANSMITTER (LED) Click here

    D

    REPLACE CERTIFICATION ECU

    A

  6. CHECK HARNESS AND CONNECTOR (CERTIFICATION ECU - INDOOR OSCILLATOR (FRONT SIDE))


    1. A0119CYE01
      Text in Illustration
      *1

      Front view of wire harness connector

      (to Indoor Electrical Key Oscillator)
      *2

      Front view of wire harness connector

      (to Certification ECU)

      Disconnect the certification ECU connector.

    2. Disconnect the indoor electrical key oscillator (front side) connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      D34-7 (CLG5) - D32-1 (CLG3) Always Below 1 Ω
      D34-8 (CG5B) - D32-3 (CLGB) Always Below 1 Ω
      D34-7 (CLG5) - Body ground Always 10 kΩ or higher
      D34-8 (CG5B) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  7. INSPECT INDOOR ELECTRICAL KEY OSCILLATOR (FRONT SIDED)


    1. A011785E01
      Text in Illustration
      *1

      Front view of wire harness connector

      (to Indoor Electrical Key Oscillator)

      Reconnect the certification ECU connector.

    2. Using an oscilloscope, check that waveform.

      OK (Reference)
      Tester Connection Tool Setting Switch Condition Specified Condition
      D32-1 (CLG3) - D32-3 (CLGB) 2 V/DIV, 2 μs/DIV. (Reference) Engine switch on (IG) Pulse generation

    NG

    REPLACE CERTIFICATION ECU

    OK

  8. REPLACE INDOOR ELECTRICAL KEY OSCILLATOR (FRONT SIDE)


    1. Temporarily replace the indoor electrical key oscillator (front side) with a new or normally functioning one Click here.


    NEXT

  9. CHECK ENTRY AND START SYSTEM (FOR START FUNCTION)


    1. Check that the engine switch indicator is illuminated in green, push the engine switch, and check that the engine starts.

      OK
      Engine can be started.

    NG

    REPLACE CERTIFICATION ECU

    OK

    END (INDOOR ELECTRICAL KEY OSCILLATOR IS DEFECTIVE)

  10. CHECK HARNESS AND CONNECTOR (CERTIFICATION ECU - INDOOR OSCILLATOR (REAR SIDE))


    1. A0119CYE02
      Text in Illustration
      *1

      Front view of wire harness connector

      (to Indoor Electrical Key Oscillator)
      *2

      Front view of wire harness connector

      (to Certification ECU)

      Disconnect the certification ECU connector.

    2. Disconnect the indoor electrical key oscillator (rear side) connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      D34-26 (CLG7) - G33-1 (CLG6) Always Below 1 Ω
      D34-27 (CG7B) - G33-3 (CLGB) Always Below 1 Ω
      D34-26 (CLG7) - Body ground Always 10 kΩ or higher
      D34-27 (CG7B) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  11. INSPECT INDOOR ELECTRICAL KEY OSCILLATOR (REAR SIDE)


    1. A011785E02
      Text in Illustration
      *1

      Front view of wire harness connector

      (to Indoor Electrical Key Oscillator)

      Reconnect the certification ECU connector.

    2. Using an oscilloscope, check the waveform.

      OK (Reference)
      Tester Connection Tool Setting Switch Condition Specified Condition
      G33-1 (CLG6) - G33-3 (CLGB) 2 V/DIV, 2 μs/DIV. (Reference) Engine switch on (IG) Pulse generation

    NG

    REPLACE CERTIFICATION ECU

    OK

  12. REPLACE INDOOR ELECTRICAL KEY OSCILLATOR (REAR SIDE)

    Temporarily replace the indoor electrical key oscillator (front side) with a new or normally functioning one Click here.


    NEXT

  13. CHECK ENTRY AND START SYSTEM


    1. Check that the engine switch indicator is illuminated in green, push the engine switch, and check that the engine starts.

      OK
      Engine can be started.

    NG

    REPLACE CERTIFICATION ECU

    OK

    END (INDOOR ELECTRICAL KEY OSCILLATOR IS DEFECTIVE)

  14. CHECK ELECTRICAL KEY TRANSMITTER (LED)


    1. Check that the transmitter LED illuminates each time when the switch is pressed 3 times.

      Result
      Result Proceed to
      Transmitter LED does not illuminate at all when switch is pressed 3 times A
      Transmitter LED illuminates each time when switch is pressed 3 times B
      Transmitter LED does not illuminate the second or third time C

      Tech Tips

      If the transmitter LED does not illuminate the second or third time, the battery is depleted.


    B

    REPLACE ELECTRICAL KEY TRANSMITTER

    C

    REPLACE TRANSMITTER BATTERY Click here

    A

  15. INSPECT TRANSMITTER BATTERY (VOLTAGE)


    1. A01172G

      Remove the battery from the electrical key transmitter 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. A0118W9E01

      Using an oscilloscope, check the transmitter battery voltage waveform.

      Tech Tips

      When measuring the battery voltage, while operating the lock switch of a door outside handle assembly, bring the electrical key transmitter 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

  16. CHECK ELECTRICAL KEY TRANSMITTER


    1. Check if there is another registered transmitter available.

      Result
      Result Proceed to
      Another registered transmitter is not available A
      Another registered transmitter is available B

    B

    CHECK ENTRY AND START SYSTEM Click here

    A

  17. REPLACE ELECTRICAL KEY TRANSMITTER


    1. Replace the electrical key transmitter.


    NEXT

  18. REGISTER ELECTRICAL KEY TRANSMITTER


    1. Register the electrical key transmitter.


    NEXT

  19. CHECK ENTRY AND START SYSTEM


    1. Check that the engine switch indicator is illuminated in green, push the engine switch, and check that the engine starts.

      OK
      Engine can be started.

    NG

    REPLACE CERTIFICATION ECU

    OK

    END (ELECTRICAL KEY TRANSMITTER IS DEFECTIVE)