ENTRY AND START SYSTEM(for Entry Function) All Door Entry Lock/Unlock Functions and Wireless Functions do not Operate

DESCRIPTION

When the entry operation and wireless operation of the door lock functions do not operate, a malfunction or wave interference may be occurring in either of the following: 1) the signal communication line between the door control receiver and certification ECU (smart key ECU assembly) (the line used for entry and wireless operations); or 2) the electrical key transmitter sub-assembly. If the entry lock and wireless lock operations cannot be performed, there may be electrical key transmitter sub-assembly malfunctions, wave interference or problems in the communication which is used for the entry and wireless function between the door control receiver and certification ECU (smart key ECU assembly).

WIRING DIAGRAM

B00455RE12

CAUTION / NOTICE / HINT

Note


  • When using the GTS with the engine switch off, connect the GTS to the DLC3 and turn a courtesy light switch on and off at intervals of 1.5 seconds or less until communication between the GTS and the vehicle begins. Then select Model Code "KEY REGIST" under manual mode and enter the following menus: Body Electrical / Entry&Start(CAN). While using the GTS, periodically turn a courtesy light switch on and off at intervals of 1.5 seconds or less to maintain communication between the GTS and the vehicle.

  • The entry and start system (for Entry Function) uses a LIN communication system and CAN communication system. Inspect the communication function by following How to Proceed with Troubleshooting (See page ). Troubleshoot the entry and start system (for Entry Function) after confirming that the communication system is functioning properly.

    Click here

  • Before replacing the certification ECU (smart key ECU assembly), refer to the entry and start system (for Entry Function) Click here.

  • Check that there are no electrical key transmitter sub-assemblies in the vehicle.

  • Before performing the inspection, check that DTC B1242 (wireless door lock control) is not output Click here.

  • Inspect the fuses for circuits related to this system before performing the following inspection procedure.

  • When checking the entry lock operation multiple times, the lock operation may be limited to 2 consecutive operations depending on the settings. In order to perform the entry lock operation 3 or more times, an unlock operation must be performed once (any type of unlock operation is sufficient). However, only consecutive entry lock operations are limited. Using the wireless lock or other types of lock operations, it is possible to perform consecutive lock operations without this limitation.

  • After repair, confirm DTC does not reoccur by performing the "DTC Output Confirmation Operation".

  • Door control receiver has a constant voltage (12 V) supply circuit connected to terminal "+5".

PROCEDURE


  1. CHECK BATTERY VOLTAGE


    1. Measure the voltage of the vehicle battery.

      Standard voltage
      11 to 14 V

      Tech Tips

      It may be possible to tell whether the vehicle battery is discharged by operating the horn.

      If the voltage is below 11 V, recharge or replace the vehicle battery before proceeding.


    NEXT

  2. CHECK FOR DTC


    1. Open the driver door using the mechanical key built into the electrical key transmitter sub-assembly.

    2. Connect the GTS and check for DTCs Click here.

      Tech Tips

      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.

      OK
      DTC is not output.

    NG

    GO TO DIAGNOSTIC TROUBLE CODE CHART Click here

    OK

  3. CHECK POWER DOOR LOCK CONTROL SYSTEM


    1. When the door control switch on the power window regulator master switch assembly on the driver door is operated, check that the doors unlock and lock according to the switch operation Click here.

      OK
      Door locks operate normally.

    NG

    GO TO POWER DOOR LOCK CONTROL SYSTEM Click here

    OK

  4. CHECK KEY DIAGNOSTIC MODE


    1. Check the following antennas in the key diagnostic mode Click here.

    2. Select either channel 1 or channel 2 and inspect the key diagnostic mode for each channel.

      Tech Tips

      If the buzzer sounds with [CH1] displayed but not with [CH2], the electrical key transmitter cannot be detected by channel 2 due to a malfunction, such as wave interference.


      1. B0047UAC09
        *A for LHD
        *B for RHD
        *a 0.7 to 1 m (2.30 to 3.28 ft.)

        Check the electrical key antenna (for driver door):

        When the electrical key transmitter sub-assembly is brought within 0.7 to 1 m (2.30 to 3.28 ft.) of the front door outside handle assembly (for driver door), check that the wireless door lock buzzer sounds.

      2. B0045H7C07
        *A for LHD
        *B for RHD
        *a 0.7 to 1 m (2.30 to 3.28 ft.)

        Check the electrical key antenna (for front passenger door):

        When the electrical key transmitter sub-assembly is brought within 0.7 to 1 m (2.30 to 3.28 ft.) of the front door outside handle assembly (for front passenger door), check that the wireless door lock buzzer sounds.

      3. B00462LC01
        *a Inspection Point

        Check the No. 1 indoor electrical key antenna (front floor):

        When the electrical key transmitter sub-assembly is at the inspection point, check that the wireless door lock buzzer sounds.

      4. B00458TC01
        *a Inspection Point

        Check the No. 2 indoor electrical key antenna (inside luggage):

        When the electrical key transmitter sub-assembly is at the inspection point, check that the wireless door lock buzzer sounds.

      5. B0047VBC01
        *a Inspection Point
        *b Approximately 0.7 m (2.30 ft.)

        Check the electrical key antenna (outside luggage):

        When the electrical key transmitter sub-assembly is brought within 0.7 to 1 m (2.30 to 3.28 ft.) of the electrical key antenna (outside luggage), check that the wireless door lock buzzer sounds.

        OK
        Wireless door lock buzzer sounds.
        Result
        Result Proceed to
        Diagnostic mode inspections fail for both channels A
        Diagnostic mode inspections succeed for both channels B
        Diagnostic mode inspection succeeds for only one of the channels C

    B

    REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) Click here

    C

    CHECK WAVE ENVIRONMENT Click here

    A

  5. CHECK ELECTRICAL KEY TRANSMITTER SUB-ASSEMBLY


    1. Check if there are any other registered electrical key transmitter sub-assemblies.

      Result
      Result Proceed to
      There are no other registered electrical key transmitter sub-assemblies A
      There is another registered electrical key transmitter sub-assemblies B

    B

    CHECK ENTRY DOOR LOCK OPERATION Click here

    A

  6. ELECTRICAL KEY TRANSMITTER SUB-ASSEMBLY REGISTRATION (NEW ELECTRICAL KEY TRANSMITTER)


    1. Register a new electrical key transmitter sub-assembly.

      Tech Tips

      Refer to the Service Bulletin.


    NEXT

    CHECK TRANSMITTER BATTERY Click here

  7. CHECK ENTRY DOOR LOCK OPERATION


    1. Using another registered electrical key transmitter sub-assembly, check if an entry lock/unlock operation can be performed twice in succession.

      OK
      Entry lock/unlock operate normally.

    NG

    CHECK WAVE ENVIRONMENT Click here

    OK

  8. CHECK TRANSMITTER BATTERY


    1. Check the transmitter battery level of the electrical key transmitter sub-assembly that was checked first.


      1. Press and hold the lock switch of the transmitter for 5 seconds and check the number of times that the transmitter LED illuminates.

        Result
        Result Proceed to
        Transmitter LED does not illuminate when switch is pressed and held A
        Transmitter LED illuminates 3 times or more when switch is pressed and held B
        Transmitter LED illuminates once or twice but not a third time C

        Tech Tips


        • The electrical key transmitter sub-assembly sends voltage information to the certification ECU (smart key ECU assembly) when it is being used. The certification ECU (smart key ECU assembly) displays "Yes" for the "Key Low Battery" item of the Data List when this voltage information indicates 2.2 V or less Click here

        • Even if the transmitter battery is depleted, it is still possible to start the engine by holding the electrical key transmitter sub-assembly against the engine switch, depressing the brake pedal and pressing the engine switch.


    B

    REPLACE ELECTRICAL KEY TRANSMITTER SUB-ASSEMBLY

    C

    REPLACE TRANSMITTER BATTERY Click here

    A

  9. INSPECT TRANSMITTER BATTERY (VOLTAGE)


    1. Remove the transmitter battery from the electrical key transmitter sub-assembly that does not operate Click here.

    2. B00486PC05
      *1 Lead Wire

      Attach a lead wire (0.60 mm (0.0236 in.) in diameter or less including wire sheath) with tape or equivalent to the negative terminal.

      Note

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

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

    4. B0045LZC11
      *a GND

      Measure the voltage of the transmitter battery.

      Tech Tips


      • When measuring the transmitter battery voltage, bring the electrical key transmitter sub-assembly within the lock entry operating range while operating the lock sensor of a door handle to perform the measurement.

      • Perform the measurement when the key is at room temperature.

      • The key sends voltage information to the certification ECU (smart key ECU assembly) when it is transmitting. When this voltage is 2.2 V or less the Data List item "Key Low Battery" displays "Yes". Click here

      Standard Voltage
      Tester Connection Switch Condition Specified Condition
      Transmitter battery positive (+) - Transmitter battery negative (-) Engine switch off, all doors closed and lock sensor touched 2.3 to 3.2 V

    OK

    REPLACE ELECTRICAL KEY TRANSMITTER SUB-ASSEMBLY

    NG

    REPLACE TRANSMITTER BATTERY Click here

  10. CHECK WAVE ENVIRONMENT


    1. Bring the electrical key transmitter sub-assembly near the door control receiver and perform a wireless and entry function operation check.

      Tech Tips


      • When the electrical key transmitter sub-assembly is brought near the door control receiver, 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 problem only occurs in certain locations or at certain times of day, the possibility of wave interference is high. Also, added vehicle components may cause wave interference. If installed, remove them and perform the operation check.

      • There may be wave interference if the vehicle is near broadcasting antennas, large video displays, wireless garage door opener systems, wireless security cameras, home security systems, etc. In this case, move the vehicle to a different location and check if there is any improvement.

      • If a tool for checking electric waves, such as a signal strength meter, is available, move around the area while observing both the LF band (used by the vehicle antenna to form the detection area) and RF band (used by the electrical key transmitter sub-assembly for transmission) to check for locations where there is wave interference.

      OK
      Wireless and entry functions operate normally.

    OK

    AFFECTED BY WAVE INTERFERENCE

    NG

  11. READ VALUE USING GTS (ACC SW, IG SW)


    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 / Main Body / Data List.

    5. According to the display on the GTS, read the Data List.

      Main Body
      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      ACC SW Engine switch on (ACC) / OFF or ON

      OFF: Engine switch off

      ON: Engine switch on (ACC)

      		 -
      IG SW Engine switch on (IG) / OFF or ON

      OFF: Engine switch off

      ON: Engine switch on (IG)

      		 -

    NG

    TROUBLESHOOT MAIN BODY ECU Click here

    OK

  12. CHECK HARNESS AND CONNECTOR (CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) - BATTERY AND BODY GROUND)


    1. B0046XTC25
      *a

      Front view of wire harness connector

      (to Certification ECU (Smart Key ECU Assembly))

      Disconnect the F65 certification ECU (smart key ECU assembly) connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      F65-11 (E) - Body ground Always Below 1 Ω

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

      Standard Voltage
      Tester Connection Condition Specified Condition
      F65-10 (CUTB) - Body ground Always 11 to 14 V
      F65-2 (+B) - Body ground Always 11 to 14 V

    4. Reconnect the F65 certification ECU (smart key ECU assembly) connector.


    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  13. CHECK HARNESS AND CONNECTOR (CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) - DOOR CONTROL RECEIVER)


    1. Disconnect the F64 certification ECU (smart key ECU assembly) connector.

    2. Disconnect the K12 door control receiver connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      F64-5 (RCO) - K12-4 (+5) Always Below 1 Ω
      F64-17 (RDAM) - K12-5 (+B) Always Below 1 Ω
      F64-6 (CSEL) - K12-2 (RDA) Always Below 1 Ω
      F64-5 (RCO) or K12-4 (+5) - Body ground Always 10 kΩ or higher
      F64-17 (RDAM) or K12-5 (+B) - Body ground Always 10 kΩ or higher
      F64-6 (CSEL) or K12-2 (RDA) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  14. INSPECT DOOR CONTROL RECEIVER


    1. Reconnect the K12 door control receiver connector.

    2. B0046E1C01
      *a

      Component with harness connected

      (Door Control Receiver)

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      K12-1 (GND) - Body ground Always Below 1 Ω

    NG

    REPLACE DOOR CONTROL RECEIVER Click here

    OK

  15. INSPECT CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)


    1. Reconnect the F64 certification ECU (smart key ECU assembly) connector.

    2. Reconnect the K12 door control receiver connector.

    3. B0046E1C02
      *a

      Component with harness connected

      (Door Control Receiver)

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

      Standard Voltage
      Tester Connection Condition Specified Condition
      K12-4 (+5) - K12-1 (GND)

        Procedure:

      1. Power switch off

      2. Electrical key transmitter sub-assembly switch pressed

      		 Below 1 V → 4.5 to 5.5 V
      K12-2 (RDA) - K12-1 (GND)

        Procedure:

      1. Engine switch off

      2. All doors closed

      		 Below 1 V → 4.4 to 6 V → Below 1 V (Pulse generation)

    NG

    REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

    OK

  16. INSPECT DOOR CONTROL RECEIVER


    1. Connect the F64 certification ECU (smart key ECU assembly) connector.

    2. Connect the K12 door control receiver connector.

    3. B0046E1C03
      *a

      Component with harness connected

      (Door Control Receiver)

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

      Standard Voltage
      Tester Connection Condition Specified Condition
      K12-5 (+B) - K12-1 (GND)

      Procedure:


      1. All doors closed

      2. All doors locked

      3. Electrical key transmitter sub-assembly switch pressed

      		 11 to 14 V pulse generation at regular intervals → Pulse generation

    NG

    REPLACE DOOR CONTROL RECEIVER Click here

    OK

  17. REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)


    1. Replace the certification ECU (smart key ECU assembly) with a new one.

      Tech Tips

      Refer to the Service Bulletin.


    NEXT

  18. CHECK WIRELESS DOOR LOCK CONTROL SYSTEM


    1. Check that the wireless door lock functions operate normally Click here.

      OK
      Wireless door lock functions operate normally.

    OK

    END (CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) WAS DEFECTIVE)

    NG

    REPLACE MAIN BODY ECU Click here

  19. CHECK WAVE ENVIRONMENT


    1. Bring the electrical key transmitter sub-assembly that was checked first near the door control receiver and select the failed channel (the channel in which the buzzer did not sound) to recheck the key diagnostic mode Click here.

      Tech Tips


      • When the electrical key transmitter sub-assembly is brought near the door control receiver, 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 problem only occurs in certain locations or at certain times of day, the possibility of wave interference is high. Also, added vehicle components may cause wave interference. If installed, remove them and perform the operation check.

      • There may be wave interference if the vehicle is near broadcasting antennas, large video displays, wireless garage door opener systems, wireless security cameras, home security systems, etc. In this case, move the vehicle to a different location and check if there is any improvement.

      • If a tool for checking electric waves, such as a signal strength meter, is available, move around the area while observing both the LF band (used by the vehicle antenna to form the detection area) and RF band (used by the electrical key transmitter sub-assembly for transmission) to check for locations where there is wave interference.

      OK
      Wireless door lock buzzer sounds.

    OK

    AFFECTED BY WAVE INTERFERENCE

    NG

  20. CHECK ELECTRICAL KEY TRANSMITTER SUB-ASSEMBLY


    1. Check if there are any other registered electrical key transmitter sub-assemblies.

      Result
      Result Proceed to
      There are no other registered electrical key transmitter sub-assemblies A
      There is another registered electrical key transmitter sub-assemblies B

    B

    CHECK WAVE ENVIRONMENT Click here

    A

  21. ELECTRICAL KEY TRANSMITTER SUB-ASSEMBLY REGISTRATION (NEW ELECTRICAL KEY TRANSMITTER SUB-ASSEMBLY)


    1. Register a new electrical key transmitter sub-assembly (Refer to the Service Bulletin).


    NEXT

  22. CHECK WAVE ENVIRONMENT


    1. Bring another registered electrical key transmitter sub-assembly near the door control receiver and select the failed channel (the channel in which the buzzer did not sound) to recheck the key diagnostic mode Click here.

      OK
      Wireless door lock buzzer sounds.

    OK

    END (ELECTRICAL KEY TRANSMITTER SUB-ASSEMBLY WAS DEFECTIVE)

    NG

  23. CHECK HARNESS AND CONNECTOR (CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) - DOOR CONTROL RECEIVER)


    1. Disconnect the F64 certification ECU (smart key ECU assembly) connector.

    2. Disconnect the K12 door control receiver connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      F64-6 (CSEL) - K12-2 (RDA) Always Below 1 Ω
      F64-6 (CSEL) or K12-2 (RDA) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  24. INSPECT CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)


    1. Reconnect the F64 certification ECU (smart key ECU assembly) connector.

    2. Reconnect the K12 door control receiver connector.

    3. B0046E1C04
      *a

      Component with harness connected

      (Door Control Receiver)

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

      Standard Voltage
      Tester Connection Condition Specified Condition
      K12-2 (RDA) - K12-1 (GND)

      Procedure:


      1. Engine switch off

      2. All doors closed

      Below 1 V → 4.4 to 6 V → Below 1 V

      (Pulse generation)

    NG

    REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

    OK

  25. INSPECT DOOR CONTROL RECEIVER


    1. Reconnect the F64 certification ECU (smart key ECU assembly) connector.

    2. Reconnect the K12 door control receiver connector.

    3. B0046E1C05
      *a

      Component with harness connected

      (Door Control Receiver)

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

      Tech Tips

      Inspection should be performed while the electrical key antenna check in key diagnostic mode is being performed on the failed channel (the channel in which the buzzer did not sound).

      Standard Voltage
      Tester Connection Condition Specified Condition
      K12-5 (+B) - K12-1 (GND)

      Procedure:


      1. All doors closed

      2. All doors locked

      3. Electrical key transmitter sub-assembly switch pressed

      		 11 to 14 V pulse generation at regular intervals → Pulse generation

    NG

    REPLACE DOOR CONTROL RECEIVER Click here

    OK

  26. REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)


    1. Replace the certification ECU (smart key ECU assembly) with a new one.

      Tech Tips

      Refer to the Service Bulletin.


    NEXT

  27. CHECK WIRELESS DOOR LOCK CONTROL SYSTEM


    1. Check that the wireless door lock functions operate normally Click here.

      OK
      Wireless door lock functions operate normally.

    OK

    END (CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) WAS DEFECTIVE)

    NG

    REPLACE MAIN BODY ECU Click here