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

DESCRIPTION

If the entry lock and wireless lock operations cannot be performed, there may be door control receiver 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

B008JOAE01

CAUTION / NOTICE / HINT

Note


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

    Click here

  • 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.

  • 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 procedure.

  • Before replacing the certification ECU (smart key ECU assembly) or main body ECU (multiplex network body ECU), refer to entry and start system (for Entry Function) Precaution.

    Click here

  • After repair, confirm that no DTCs are output by performing "DTC Output Confirmation Operation".

  • Door control receiver (for 12 Pin Type):

    When replacing the electrical key & TPMS receiver assembly, read the transmitter IDs (tire pressure warning system) stored in the old ECU using the GTS and write them down before removal.

    Click here

  • Door control receiver (for 12 Pin Type):

    It is necessary to perform initialization (Click here ) after registration Click here of the transmitter IDs into the electrical key & TPMS receiver assembly if the electrical key & TPMS receiver assembly has been replaced.

  • As the door control battery is installed between the vehicle battery and main body ECU (multiplex network body ECU), first perform the inspections in On-Vehicle Inspection to confirm that there are no malfunctions in the power source circuit for the main body ECU (multiplex network body ECU) before performing this troubleshooting procedure.*

    *: w/ Door Control Battery

    Click here

PROCEDURE


  1. INSPECT BATTERY VOLTAGE


    1. Measure the voltage of the battery with the engine switch off.

      Standard voltage
      11 to 14 V

      Tech Tips

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

      If the voltage is below 11 V, recharge or replace the battery before proceeding to the next step.

      Result
      Proceed to
      NEXT

    NEXT

  2. CHECK FOR DTC


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

    2. Check for DTCs.


      Body Electrical > Entry&Start > Trouble Codes
      Result
      Result Proceed to
      DTCs are not output A
      DTCs are output B

    B

    GO TO DIAGNOSTIC TROUBLE CODE CHART Click here

    A

  3. SYSTEM CHECK


    1. Check the vehicle specification.

      Result
      Result Proceed to
      w/ Door Ajar Warning Function A
      w/o Door Ajar Warning Function B

    B

    GO TO STEP 5 Click here

    A

  4. CHECK DOOR AJAR WARNING


    1. When the doors are locked by operating the entry lock function with all doors closed, check that the door ajar warning operates.

      Tech Tips

      Warning function (door ajar warning)

      Click here

      Result
      Result Proceed to
      The wireless buzzer does not sound A
      The wireless buzzer sounds B

    B

    GO TO LIGHTING SYSTEM (Proceed to Door Courtesy Switch Circuit) Click here

    A

  5. CHECK POWER DOOR LOCK CONTROL SYSTEM


    1. When the door control switch on the multiplex network master switch assembly is operated, check that the doors unlock and lock according to the switch operation.

      Click here

      Result
      Result Proceed to
      Power door lock function operates normally A
      Power door lock function does not operate normally B

    B

    GO TO POWER DOOR LOCK CONTROL SYSTEM Click here

    A

  6. CHECK KEY DIAGNOSTIC MODE


    1. Check the following antennas in key diagnostic mode.


      Body Electrical > Entry&Start > Utility
      Tester Display
      Communication Check(Key Diag Mode)

      1. B008H99C01
        *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 buzzer sounds.

        Tech Tips


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

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

      2. B008IHUC01
        *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 buzzer sounds.

        Tech Tips


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

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

      3. B008IKKC01
        *A for LHD
        *B for RHD
        *a 0.7 to 1 m (2.30 to 3.28 ft.)

        Check the electrical key antenna (for rear door (for driver side)):

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

        Tech Tips


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

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

      4. B008GQHC01
        *A for LHD
        *B for RHD
        *a 0.7 to 1 m (2.30 to 3.28 ft.)

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

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

        Tech Tips


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

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

      5. B008IPNC01
        *a Inspection Point

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

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

        Tech Tips


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

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

      6. B008GS4C01
        *a Inspection Point

        Check the No. 2 indoor electrical key antenna assembly (rear floor):

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

        Tech Tips


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

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

      7. B008I80C01
        *a Inspection Point

        Check the No. 3 indoor electrical key antenna assembly (inside luggage):

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

        Tech Tips


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

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

      8. B008H3JC01
        *a 0.7 to 1 m (2.30 to 3.28 ft.)

        Check the electrical key antenna (outside luggage compartment):

        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 compartment), check that the wireless buzzer sounds.

        Tech Tips


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

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

        OK
        Wireless 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

    PERFORM REGISTRATION Click here

    C

    CHECK WAVE ENVIRONMENT Click here

    A

  7. 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 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 radio 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.

      Result
      Result Proceed to
      The wireless buzzer does not sound A
      The wireless buzzer sounds B

    B

    AFFECTED BY WAVE INTERFERENCE

    A

  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.

        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 near the engine switch, depressing the brake pedal and pressing the engine switch.

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

    B

    INSPECT TRANSMITTER BATTERY Click here

    C

    REPLACE TRANSMITTER BATTERY Click here

    A

  9. CHECK ELECTRICAL KEY TRANSMITTER SUB-ASSEMBLY


    1. Check if there is another electrical key transmitter sub-assembly available that is already registered to the vehicle.

      Result
      Result Proceed to
      Another registered electrical key transmitter sub-assembly is not available A
      Another registered electrical key transmitter sub-assembly is available B

    B

    GO TO STEP 11 Click here

    A

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


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

      Tech Tips

      Refer to the Service Bulletin.

      Result
      Proceed to
      NEXT

    NEXT

  11. CHECK ENTRY LOCK OPERATION


    1. Using another registered electrical key transmitter sub-assembly, check that the entry lock and unlock functions operate.

      Result
      Result Proceed to
      Entry function does not operate normally A
      Entry function operates normally B

    B

    END (ELECTRICAL KEY TRANSMITTER SUB-ASSEMBLY WAS DEFECTIVE)

    A

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


    1. Disconnect the I52 certification ECU (smart key ECU assembly) connector.

    2. Disconnect the t1*1 or P11*2 door control receiver connector.


      • *1: for 5 Pin Type

      • *2: for 12 Pin Type

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

      Standard Resistance
      for 5 Pin Type
      Tester Connection Condition Specified Condition
      I52-18 (RCO) - t1-4 (+5) Always Below 1 Ω
      I52-20 (RDAM) - t1-5 (DATA) Always Below 1 Ω
      I52-19 (CSEL) - t1-2 (CSEL) Always Below 1 Ω
      t1-1 (GND) - Body ground Always Below 1 Ω
      I52-18 (RCO) or t1-4 (+5) - Body ground Always 10 kΩ or higher
      I52-20 (RDAM) or t1-5 (DATA) - Body ground Always 10 kΩ or higher
      I52-19 (CSEL) or t1-2 (CSEL) - Body ground Always 10 kΩ or higher
      for 12 Pin Type
      Tester Connection Condition Specified Condition
      I52-18 (RCO) - P11-10 (+5) Always Below 1 Ω
      I52-20 (RDAM) - P11-9 (DATA) Always Below 1 Ω
      I52-19 (CSEL) - P11-6 (CSEL) Always Below 1 Ω
      P11-12 (GND) - Body ground Always Below 1 Ω
      I52-18 (RCO) or P11-10 (+5) - Body ground Always 10 kΩ or higher
      I52-20 (RDAM) or P11-9 (DATA) - Body ground Always 10 kΩ or higher
      I52-19 (CSEL) or P11-6 (CSEL) - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  13. CHECK ENTRY LOCK OPERATION


    1. Connect all connectors and check that the entry lock and unlock functions operate.

      Click here

      Result
      Result Proceed to
      Entry function does not operate normally A
      Entry function operates normally B

    B

    END (CONNECTOR WAS NOT CONNECTED SECURELY)

    A

  14. CHECK DOOR CONTROL RECEIVER


    1. B008H9HC37
      *A for 5 Pin Type
      *B for 12 Pin Type
      *a

      Component with harness connected

      (Door Control Receiver)

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

      Standard Resistance
      for 5 Pin Type
      Tester Connection Condition Specified Condition
      t1-1 (GND) - Body ground Always Below 1 Ω
      for 12 Pin Type
      Tester Connection Condition Specified Condition
      P11-12 (GND) - Body ground Always Below 1 Ω

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

      Standard Voltage
      for 5 Pin Type
      Tester Connection Condition Specified Condition
      t1-5 (DATA) - t1-1 (GND)

      Procedure:


      1. Engine switch off

      2. All doors closed

      3. All doors locked

      4. Lock or unlock switch of electrical key transmitter sub-assembly pressed

      Below 1 V → Pulse generation

      (See waveform 1)
      for 12 Pin Type
      Tester Connection Condition Specified Condition
      P11-9 (DATA) - P11-12 (GND)

      Procedure:


      1. Engine switch off

      2. All doors closed

      3. All doors locked

      4. Lock or unlock switch of electrical key transmitter sub-assembly pressed

      Below 1 V → Pulse generation

      (See waveform 1)
    3. B008I3TC12
      *a Before lock or unlock switch of electrical key transmitter sub-assembly pressed
      *b After lock or unlock switch of electrical key transmitter sub-assembly pressed

      Using an oscilloscope, check waveform 1.

      Note

      The oscilloscope waveform shown in the illustration is an example for reference only. Noise, chattering, etc. are not shown.

      Waveform 1 (Reference)
      Item Content
      Tester Connection

      t1-5 (DATA) - t1-1 (GND)*1

      P11-9 (DATA) - P11-12 (GND)*2
      Tool Setting 5 V/DIV., 500 ms/DIV.
      Condition

      Procedure:


      1. Engine switch off

      2. All doors closed

      3. All doors locked

      4. Lock or unlock switch of electrical key transmitter sub-assembly pressed

      *1: for 5 Pin Type

      *2: for 12 Pin Type

      Result
      Result Proceed to
      OK A
      NG (for 5 Pin Type) B
      NG (for 12 Pin Type) C

    B

    REPLACE DOOR CONTROL RECEIVER Click here

    C

    REPLACE DOOR CONTROL RECEIVER Click here

    A

  15. CHECK CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)


    1. B008H9HC38
      *A for 5 Pin Type
      *B for 12 Pin Type
      *a

      Component with harness connected

      (Door Control Receiver)

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

      Standard Voltage
      for 5 Pin Type
      Tester Connection Condition Specified Condition
      t1-4 (+5) - t1-1 (GND)

      Procedure:


      1. Engine switch off

      2. Electrical key transmitter sub-assembly switch not pressed → pressed

      		 Below 1 V → 4.5 to 6.0 V → Below 1 V
      t1-2 (CSEL) - t1-1 (GND)

      Procedure:


      1. Engine switch off

      2. All doors closed

      		 Below 1 V → Pulse generation
      for 12 Pin Type
      Tester Connection Condition Specified Condition
      P11-1 (IG) - P11-12 (GND) Engine switch on (IG)

      10 to 16 V*1

      9.5 to 14 V*2
      P11-10 (+5) - P11-12 (GND)

      Procedure:


      1. Engine switch off

      2. Electrical key transmitter sub-assembly switch not pressed → pressed

      		 Below 1 V → 4.5 to 6.0 V → Below 1 V
      P11-6 (CSEL) - P11-12 (GND)

      Procedure:


      1. Engine switch off

      2. All doors closed

      		 Below 1 V → Pulse generation
      *1: w/o Stop and Start System
      *2: w/ Stop and Start System
      Result
      Proceed to
      OK
      NG

    NG

    REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

    OK

  16. REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)


    1. Replace the certification ECU (smart key ECU assembly) and perform registration again.

      Tech Tips

      Refer to the Service Bulletin.

      Result
      Proceed to
      NEXT

    NEXT

  17. CHECK WIRELESS DOOR LOCK CONTROL SYSTEM


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

      Click here

      Result
      Result Proceed to
      Wireless door lock function operates normally A
      Wireless door lock function does not operate normally (for LHD) B
      Wireless door lock function does not operate normally (for RHD) C

    A

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

    B

    REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) Click here

    C

    REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) Click here

  18. INSPECT TRANSMITTER BATTERY


    1. Inspect the transmitter battery.

      Click here

      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.

      Result
      Proceed to
      OK
      NG

    OK

    REPLACE ELECTRICAL KEY TRANSMITTER SUB-ASSEMBLY

    NG

    REPLACE TRANSMITTER BATTERY Click here

  19. PERFORM REGISTRATION


    1. Perform registration of the B code.

      Tech Tips

      Refer to the Service Bulletin.

      Result
      Proceed to
      NEXT

    NEXT

  20. CHECK ENTRY LOCK OPERATION


    1. After B code registration is complete, check that the entry lock and unlock functions operate.

      Click here

      Result
      Result Proceed to
      Entry function does not operate normally A
      Entry function operates normally B

    B

    END (B CODE REGISTRATION FAILED)

    A

  21. READ VALUE USING GTS (B CODE)


    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 / Data List.

    5. Read the Data List according to the display on the GTS.


      Body Electrical > Entry&Start > Data List
      Tester Display Measurement Item Range Normal Condition Diagnostic Note
      B Code B code registration status Regd or No Regd

      Regd: B code registered correctly

      No Regd: B code not registered correctly

      		 -

      Body Electrical > Entry&Start > Data List
      Tester Display
      B Code
      Result
      Result Proceed to
      "No Regd" is displayed on the GTS A
      "Regd" is displayed on the GTS (for LHD) B
      "Regd" is displayed on the GTS (for RHD) C

    B

    REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) Click here

    C

    REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) Click here

    A

  22. READ VALUE USING GTS (B CODE DIFFERENCE)


    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 / Data List.

    5. Read the Data List according to the display on the GTS.


      Body Electrical > Entry&Start > Data List
      Tester Display Measurement Item Range Normal Condition Diagnostic Note
      B Code Difference B code mismatch Yes or No

      Yes: Communication malfunction

      No: Communication normal

      		 -

      Body Electrical > Entry&Start > Data List
      Tester Display
      B Code Difference
      Result
      Result Proceed to
      "No" is displayed on the GTS A
      "Yes" is displayed on the GTS B

    B

    REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

    A

  23. CHECK CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)


    1. Measure the voltage while checking the Data List on the GTS.


      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 / Power Source Control / Data List.

      5. Read the Data List according to the display on the GTS.

        B008JMXC14
        *a

        Component with harness connected

        (Certification ECU (Smart Key ECU Assembly))

        		 - -

        Body Electrical > Power Source Control > Data List
        Tester Display Measurement Item Range Normal Condition Diagnostic Note
        Power Supply Condition Power supply state All OFF, ACC ON, IG ON or ST ON

        All OFF: Engine switch off (ACC and IG)

        ACC ON: Engine switch on (ACC)

        IG ON: Engine switch on (IG)

        ST ON: Sending engine start request signal

        		 -

        Body Electrical > Power Source Control > Data List
        Tester Display
        Power Supply Condition
        Standard Voltage
        Tester Connection Switch Condition Specified Condition
        I51-3 (IG1D) - Body ground Engine switch off Below 1 V
        Engine switch on (ACC) Below 1 V
        Engine switch on (IG) 9 V or higher
        I53-9 (ACCD) - Body ground Engine switch off Below 1 V
        Engine switch on (ACC) 8.5 V or higher
        Engine switch on (IG) 8.5 V or higher
      Result
      Proceed to
      OK
      NG

    NG

    REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

    OK

  24. 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 Electrical / Main Body / Data List.

    5. Read the Data List according to the display on the GTS.


      Body Electrical > Main Body > Data List
      Tester Display Measurement Item Range Normal Condition Diagnostic Note
      ACC SW Engine switch status ON or OFF

      ON: Engine switch on (ACC)

      OFF: Engine switch off

      		 "ON" is displayed even though the engine switch is on (IG).
      IG SW Engine switch status ON or OFF

      ON: Engine switch on (IG)

      OFF: Engine switch off

      		 "OFF" is displayed even though the engine switch is on (ACC).

      Body Electrical > Main Body > Data List
      Tester Display
      ACC SW
      IG SW

      Tech Tips

      If the certification ECU (smart key ECU assembly) misjudges for any reason that the engine switch is on (IG) even though the engine switch is off, the entry lock and unlock functions stop.

      Result
      Result Proceed to
      The main body ECU (multiplex network body ECU) judges properly that the power source is off when the engine switch is off A
      The main body ECU (multiplex network body ECU) does not judge properly that the power source is off when the engine switch is off B

    B

    TROUBLESHOOT MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) Click here

    A

  25. CHECK ENTRY LOCK OPERATION


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

    2. Check that the entry lock and unlock functions operate.

      Click here

      Result
      Result Proceed to
      Entry function does not operate normally A
      Entry function operates normally B

    B

    END (CONNECTOR WAS NOT CONNECTED SECURELY)

    A

  26. REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)


    1. Replace the certification ECU (smart key ECU assembly) with a new one and perform registration again.

      Tech Tips

      Refer to the Service Bulletin.

      Result
      Proceed to
      NEXT

    NEXT

  27. CHECK WIRELESS DOOR LOCK CONTROL SYSTEM


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

      Click here

      Result
      Result Proceed to
      Wireless door lock function operates normally A
      Wireless door lock function does not operate normally (for LHD) B
      Wireless door lock function does not operate normally (for RHD) C

    A

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

    B

    REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) Click here

    C

    REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) Click here

  28. 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 key diagnostic mode.

      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 radio 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.

      Result
      Result Proceed to
      The wireless buzzer does not sound A
      The wireless buzzer sounds B

    B

    AFFECTED BY WAVE INTERFERENCE

    A

  29. CHECK ELECTRICAL KEY TRANSMITTER SUB-ASSEMBLY


    1. Check if there is another electrical key transmitter sub-assembly available that is already registered to the vehicle.

      Result
      Result Proceed to
      Another registered electrical key transmitter sub-assembly is not available A
      Another registered electrical key transmitter sub-assembly is available B

    B

    GO TO STEP 31 Click here

    A

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


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

      Tech Tips

      Refer to the Service Bulletin.

      Result
      Proceed to
      NEXT

    NEXT

  31. 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 key diagnostic mode.

      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 radio 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.

      Result
      Result Proceed to
      The wireless buzzer does not sound A
      The wireless buzzer sounds B

    B

    END (ELECTRICAL KEY TRANSMITTER SUB-ASSEMBLY WAS DEFECTIVE)

    A

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


    1. Disconnect the I52 certification ECU (smart key ECU assembly) connector.

    2. Disconnect the t1*1 or P11*2 door control receiver connector.


      • *1: for 5 Pin Type

      • *2: for 12 Pin Type

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

      Standard Resistance
      for 5 Pin Type
      Tester Connection Condition Specified Condition
      I52-19 (CSEL) - t1-2 (CSEL) Always Below 1 Ω
      I52-19 (CSEL) or t1-2 (CSEL) - Body ground Always 10 kΩ or higher
      for 12 Pin Type
      Tester Connection Condition Specified Condition
      I52-19 (CSEL) - P11-6 (CSEL) Always Below 1 Ω
      I52-19 (CSEL) or P11-6 (CSEL) - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  33. CHECK ENTRY LOCK OPERATION


    1. Connect all connectors and check that the entry lock and unlock functions operate.

      Click here

      Result
      Result Proceed to
      Entry function does not operate normally A
      Entry function operates normally B

    B

    END (CONNECTOR WAS NOT CONNECTED SECURELY)

    A

  34. CHECK CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)


    1. B008H9HC39
      *A for 5 Pin Type
      *B for 12 Pin Type
      *a

      Component with harness connected

      (Door Control Receiver)

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

      Standard Voltage
      for 5 Pin Type
      Tester Connection Condition Specified Condition
      t1-2 (CSEL) - t1-1 (GND)

      Procedure:


      1. Engine switch off

      2. All doors closed

      		 Below 1 V → Pulse generation
      for 12 Pin Type
      Tester Connection Condition Specified Condition
      P11-6 (CSEL) - P11-12 (GND)

      Procedure:


      1. Engine switch off

      2. All doors closed

      		 Below 1 V → Pulse generation
      Result
      Proceed to
      OK
      NG

    NG

    REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

    OK

  35. CHECK DOOR CONTROL RECEIVER


    1. Enter key diagnostic mode and select the channel for which the wireless buzzer did not sound.

    2. B008H9HC40
      *A for 5 Pin Type
      *B for 12 Pin Type
      *a

      Component with harness connected

      (Door Control Receiver)

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

      Standard Voltage
      for 5 Pin Type
      Tester Connection Condition Specified Condition
      t1-5 (DATA) - t1-1 (GND)

      Procedure:


      1. Engine switch off

      2. All doors closed

      3. All doors locked

      4. Lock or unlock switch of electrical key transmitter sub-assembly pressed

      Below 1 V → Pulse generation

      (See waveform 1)
      for 12 Pin Type
      Tester Connection Condition Specified Condition
      P11-9 (DATA) - P11-12 (GND)

      Procedure:


      1. Engine switch off

      2. All doors closed

      3. All doors locked

      4. Lock or unlock switch of electrical key transmitter sub-assembly pressed

      Below 1 V → Pulse generation

      (See waveform 1)

      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).

    3. B008I3TC12
      *a Before lock or unlock switch of electrical key transmitter sub-assembly pressed
      *b After lock or unlock switch of electrical key transmitter sub-assembly pressed

      Using an oscilloscope, check waveform 1.

      Note

      The oscilloscope waveform shown in the illustration is an example for reference only. Noise, chattering, etc. are not shown.

      Waveform 1 (Reference)
      Item Content
      Tester Connection

      t1-5 (DATA) - t1-1 (GND)*1

      P11-9 (DATA) - P11-12 (GND)*2
      Tool Setting 5 V/DIV., 500 ms/DIV.
      Condition

      Procedure:


      1. Engine switch off

      2. All doors closed

      3. All doors locked

      4. Lock or unlock switch of electrical key transmitter sub-assembly pressed

      *1: for 5 Pin Type

      *2: for 12 Pin Type

      Result
      Result Proceed to
      OK A
      NG (for 5 Pin Type) B
      NG (for 12 Pin Type) C

    B

    REPLACE DOOR CONTROL RECEIVER Click here

    C

    REPLACE DOOR CONTROL RECEIVER Click here

    A

  36. REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)


    1. Replace the certification ECU (smart key ECU assembly) and perform registration again.

      Tech Tips

      Refer to the Service Bulletin.

      Result
      Proceed to
      NEXT

    NEXT

  37. CHECK WIRELESS DOOR LOCK CONTROL SYSTEM


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

      Click here

      Result
      Result Proceed to
      Wireless door lock function operates normally A
      Wireless door lock function does not operate normally (for LHD) B
      Wireless door lock function does not operate normally (for RHD) C

    A

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

    B

    REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) Click here

    C

    REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) Click here