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

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DTC Code DTC Name
  All Door Entry Lock/Unlock Functions and Wireless Functions do not Operate
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DESCRIPTION

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

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WIRING DIAGRAM

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CAUTION / NOTICE / HINT

Note:

  • When using the GTS with the power 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. 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 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.

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  • Before replacing the certification ECU (smart key ECU assembly) or main body ECU (multiplex network body ECU), refer to Service Bulletin.

  • After repair, confirm that no DTCs are output.

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

  • 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.

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  • Door control receiver (for Two ConnectorType)

    It is necessary to perform initialization after registration of the transmitter IDs into the door control receiver if the door control receiver has been replaced.


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PROCEDURE


  1. Click here

    INSPECT AUXILIARY BATTERY VOLTAGE


    1. Measure the auxiliary battery voltage.

      Standard voltage
      11 to 14 V (power switch off)
      Tip:

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

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

      Result
      Proceed to
      NEXT

  2. Click here

    CHECK FOR DTC


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

    2. Check for DTCs.


      1. Body Electrical > Entry&Start > Trouble Codes


      Result
      Result Proceed to
      DTCs are not output A
      DTCs are output B

  3. Click here

    SYSTEM CHECK


    1. Check the vehicle specification.

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

  4. Click here

    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.

      Tip:

      Be sure to check the following before performing the procedure.


      • Power switch is off.

      • All the doors is close.

      • The lock sensor is on or lock switch is pressed on the electrical key transmitter sub-assembly.

      • Electrical key transmitter sub-assembly is in the vehicle exterior detection area.

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

  5. Click here

    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

  6. Click here

    CHECK KEY DIAGNOSTIC MODE


    1. Check the following antennas in key diagnostic mode.


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





      1. Figure 2. for RHD: B004R1YC01
        *a 0.7 to 1 m (2.30 to 3.28 ft.)
        Figure 1. for LHD: B004S04C01
        *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 buzzer sounds.

        Tip:

        • Select either channel 1 or channel 2 and perform the key diagnostic mode inspection 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. Figure 4. for RHD: B004S04C01
        *a 0.7 to 1 m (2.30 to 3.28 ft.)
        Figure 3. for LHD: B004R1YC01
        *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 buzzer sounds.

        Tip:

        • Select either channel 1 or channel 2 and perform the key diagnostic mode inspection 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. Figure 6. for RHD: B004SFRC01
        *a 0.7 to 1 m (2.30 to 3.28 ft.)
        Figure 5. for LHD: B004VPAC01
        *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 buzzer sounds.

        Tip:

        • Select either channel 1 or channel 2 and perform the key diagnostic mode inspection 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. Figure 8. for RHD: B004VPAC01
        *a 0.7 to 1 m (2.30 to 3.28 ft.)
        Figure 7. for LHD: B004SFRC01
        *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 buzzer sounds.

        Tip:

        • Select either channel 1 or channel 2 and perform the key diagnostic mode inspection 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. B004RRUC01
        *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 buzzer sounds.

        Tip:

        • Select either channel 1 or channel 2 and perform the key diagnostic mode inspection 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. B004SKIC01
        *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 buzzer sounds.

        Tip:

        • Select either channel 1 or channel 2 and perform the key diagnostic mode inspection 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. B004Y8VC01
        *a Inspection Point

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

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

        Tip:

        • Select either channel 1 or channel 2 and perform the key diagnostic mode inspection 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. B004VH7C01
        *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 buzzer sounds.

        Tip:

        • Select either channel 1 or channel 2 and perform the key diagnostic mode inspection 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
        Buzzer sounds.
      Result
      Result Proceed to
      Key diagnostic mode inspections fail for both channels A
      Key diagnostic mode inspections succeed for both channels B
      Key diagnostic mode inspection succeeds for only one of the channels C

  7. Click here

    CHECK WAVE ENVIRONMENT


    1. Bring the electrical key transmitter sub-assembly near the door control receiver and perform a wireless operation 2 or more times*.


      • *: When the wireless function is operated, channel 1 and 2 are used alternately. If the first wireless operation is performed successfully and the second wireless operation fails, wave interference may be occurring for either channel.

      Tip:

      • 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
      Wireless function does not operate normally A
      Wireless function operates normally B

  8. Click here

    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 electrical key transmitter sub-assembly for 5 seconds and check the number of times that the LED illuminates.

        Tip:

        • The electrical key transmitter sub-assembly sends voltage information to the certification ECU (smart key ECU assembly) when it is being used. "Yes" is displayed for the Data List item "Key Low Battery" 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 hybrid control system by holding the electrical key transmitter sub-assembly near the power switch, depressing the brake pedal and pressing the power switch.

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

  9. Click here

    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

  10. Click here

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


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

      Tip:

      Refer to Service Bulletin.

      Result
      Proceed to
      NEXT

  11. Click here

    CHECK ENTRY LOCK OPERATION


    1. Using another registered electrical key transmitter sub-assembly, check that the function operates normally.

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

    • AClick here
    • B

      END (ELECTRICAL KEY TRANSMITTER SUB-ASSEMBLY WAS DEFECTIVE)

  12. Click here

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


    1. Disconnect the L31 certification ECU (smart key ECU assembly) connector.

    2. Disconnect the L48*1 or L49*2 door control receiver connector.


      • *1: for Two Connector Type

      • *2: for One Connector Type

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

      Standard Resistance
      Table 1. for Two Connector Type:
      Tester Connection Condition Specified Condition
      L31-18 (RCO) - L48-8 (+5) Always Below 1 Ω
      L31-19 (RDAM) - L48-2 (DATA) Always Below 1 Ω
      L31-20 (CSEL) - L48-6 (CSEL) Always Below 1 Ω
      L31-21 (ASEL) - L48-11 (ASEL) Always Below 1 Ω
      L48-12 (GND) - Body ground Always Below 1 Ω
      L31-18 (RCO) or L48-8 (+5) - Other terminals and body ground Always 10 kΩ or higher
      L31-19 (RDAM) or L48-2 (DATA) - Other terminals and body ground Always 10 kΩ or higher
      L31-20 (CSEL) or L48-6 (CSEL) - Other terminals and body ground Always 10 kΩ or higher
      L31-21 (ASEL) or L48-11 (ASEL) - Other terminals and body ground Always 10 kΩ or higher
      Table 2. for One Connector Type:
      Tester Connection Condition Specified Condition
      L31-18 (RCO) - L49-2 (+5) Always Below 1 Ω
      L31-19 (RDAM) - L49-3 (DATA) Always Below 1 Ω
      L31-20 (CSEL) - L49-5 (CSEL) Always Below 1 Ω
      L31-21 (ASEL) - L49-4 (ASEL) Always Below 1 Ω
      L49-6 (GND) - Body ground Always Below 1 Ω
      L31-18 (RCO) or L49-2 (+5) - Other terminals and body ground Always 10 kΩ or higher
      L31-19 (RDAM) or L49-3 (DATA) - Other terminals and body ground Always 10 kΩ or higher
      L31-20 (CSEL) or L49-5 (CSEL) - Other terminals and body ground Always 10 kΩ or higher
      L31-21 (ASEL) or L49-4 (ASEL) - Other terminals and body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    • OKClick here
    • NG

      REPAIR OR REPLACE HARNESS OR CONNECTOR

  13. Click here

    CHECK ENTRY LOCK OPERATION


    1. Connect all connectors and check that the function operates normally.

      Click here

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

    • AClick here
    • B

      END (CONNECTOR WAS NOT CONNECTED SECURELY)

  14. Click here

    CHECK DOOR CONTROL RECEIVER


    1. B004YNWC18
      *A for Two Connector Type
      *B for One Connector Type
      *a

      Component with harness connected

      (Door Control Receiver)

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

      Standard Resistance
      Table 3. for Two Connector Type:
      Tester Connection Condition Specified Condition
      L48-12 (GND) - Body ground Always Below 1 Ω
      Table 4. for One Connector Type:
      Tester Connection Condition Specified Condition
      L49-6 (GND) - Body ground Always Below 1 Ω
    2. B004XWTC03
      *A for Two Connector Type
      *B for One Connector Type
      *a

      Component with harness connected

      (Door Control Receiver)
      *b Waveform 1
      *c Before lock or unlock switch of electrical key transmitter sub-assembly pressed
      *d After lock or unlock switch of electrical key transmitter sub-assembly pressed

      Using an oscilloscope, check the waveform.

      OK
      Table 5. for Two Connector Type:
      Tester Connection Condition Tool Setting Specified Condition
      L48-2 (DATA) - L48-12 (GND)

      Procedure:


      1. Power switch off

      2. All doors locked

      3. Electrical key transmitter sub-assembly not inside vehicle

      4. Electrical key transmitter sub-assembly brought outside detection area but kept inside wireless function operational area

      5. Lock or unlock switch of electrical key transmitter sub-assembly not pressed → pressed

      		 5 V/DIV., 500 ms/DIV.

      Below 1 V → Pulse generation

      (See waveform 1)
      Table 6. for One Connector Type:
      Tester Connection Condition Tool Setting Specified Condition
      L49-3 (DATA) - L49-6 (GND)

      Procedure:


      1. Power switch off

      2. All doors locked

      3. Electrical key transmitter sub-assembly not inside vehicle

      4. Electrical key transmitter sub-assembly brought outside detection area but kept inside wireless function operational area

      5. Lock or unlock switch of electrical key transmitter sub-assembly not pressed → pressed

      		 5 V/DIV., 500 ms/DIV.

      Below 1 V → Pulse generation

      (See waveform 1)
      Result
      Result Proceed to
      OK A
      NG B

  15. Click here

    CHECK CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)


    1. B004YNWC19
      *A for Two Connector Type
      *B for One Connector Type
      *a

      Component with harness connected

      (Door Control Receiver)

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

      Standard Voltage
      Table 7. for Two Connector Type:
      Tester Connection Condition Specified Condition
      L48-1 (IG) - L48-12 (GND) Power switch on (IG) 10 to 16 V
      L48-6 (CSEL) - L48-12 (GND)

      Procedure:


      1. Power switch off

      2. All doors closed

      		 Below 1 V → Pulse generation
      L48-11 (ASEL) - L48-12 (GND)

      Procedure:


      1. Power switch off

      2. All doors locked

      3. Electrical key transmitter sub-assembly held and then luggage electrical key switch off → on

      		 Below 1 V → 4.5 to 6 V
      Table 8. for One Connector Type:
      Tester Connection Condition Specified Condition
      L49-5 (CSEL) - L49-6 (GND)

      Procedure:


      1. Power switch off

      2. All doors closed

      		 Below 1 V → Pulse generation
      L49-4 (ASEL) - L48-6 (GND)

      Procedure:


      1. Power switch off

      2. All doors locked

      3. Electrical key transmitter sub-assembly held and then luggage electrical key switch off → on

      		 Below 1 V → 4.5 to 6 V
    2. B004U0DC01
      *A for Two Connector Type
      *B for One Connector Type
      *a

      Component with harness connected

      (Door Control Receiver)
      *b Waveform 1
      *c Before lock or unlock switch of electrical key transmitter sub-assembly pressed
      *d After lock or unlock switch of electrical key transmitter sub-assembly pressed

      Using an oscilloscope, check the waveform.

      OK
      Table 9. for Two Connector Type:
      Tester Connection Condition Tool Setting Specified Condition
      L48-8 (+5) - L48-12 (GND)

      Procedure:


      1. Power switch off

      2. Electrical key transmitter sub-assembly brought outside detection area but kept inside wireless function operational area

      3. Lock or unlock switch of electrical key transmitter sub-assembly not pressed → pressed

      		 2 V/DIV., 500 ms/DIV.

      Pulse generation

      (See waveform 1)
      Table 10. for One Connector Type:
      Tester Connection Condition Tool Setting Specified Condition
      L49-2 (+5) - L49-6 (GND)

      Procedure:


      1. Power switch off

      2. Electrical key transmitter sub-assembly brought outside detection area but kept inside wireless function operational area

      3. Lock or unlock switch of electrical key transmitter sub-assembly not pressed → pressed

      		 2 V/DIV., 500 ms/DIV.

      Pulse generation

      (See waveform 1)
      Result
      Proceed to
      OK
      NG

    • OKClick here
    • NG

      REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

  16. Click here

    REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)


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

      Tip:

      Refer to Service Bulletin.

      Result
      Proceed to
      NEXT

  17. Click here

    CHECK WIRELESS DOOR LOCK CONTROL SYSTEM


    1. Check that the wireless function operates normally.

      Click here

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

    • A

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

    • B

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

  18. Click here

    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 BATTERYClick here

  19. Click here

    PERFORM REGISTRATION


    1. Perform registration of the B code.

      Tip:

      Refer to Service Bulletin.

      Result
      Proceed to
      NEXT

  20. Click here

    CHECK ENTRY LOCK OPERATION


    1. After completing B code registration, check that the entry lock and unlock functions can be operated 2 times consecutively.

      Click here

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

  21. Click here

    READ VALUE USING GTS (B CODE)


    1. Connect the GTS to the DLC3.

    2. Turn the power 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.


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

        No Regd: B code not registered correctly

        Regd: B code registered correctly

        		 -



      1. 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 B

  22. Click here

    READ VALUE USING GTS (B CODE DIFFERENCE)


    1. Connect the GTS to the DLC3.

    2. Turn the power 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.


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

        No: Communication normal

        Yes: Communication malfunction

        		 -



      1. 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

    • AClick here
    • B

      REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

  23. Click here

    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 power switch on (IG).

      3. Turn the GTS on.

      4. Enter the following menus: Body Electrical / Power Source Control / Data List.

      5. B004SODC07
        *a

        Component with harness connected

        (Certification ECU (Smart Key ECU Assembly))

        		 - -

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


        1. 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: Power switch off

          ACC ON: Power switch on (ACC)

          IG ON: Power switch on (IG)

          ST ON: Sending hybrid control system start request signal

          		 -



        1. Body Electrical > Power Source Control > Data List
          Tester Display
          Power Supply Condition




        Standard Voltage
        Tester Connection Switch Condition Specified Condition
        G71-17 (IG1D) - Body ground Power switch off Below 1 V
        Power switch on (ACC) Below 1 V
        Power switch on (IG) 9 V or higher
        G71-16 (ACCD) - Body ground Power switch off Below 1 V
        Power switch on (ACC) 9 V or higher
        Power switch on (IG) 9 V or higher
      Result
      Proceed to
      OK
      NG

    • OKClick here
    • NG

      REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

  24. Click here

    READ VALUE USING GTS (ACC SW, IG SW)


    1. Connect the GTS to the DLC3.

    2. Turn the power 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.


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

        OFF: Power switch off

        ON: Power switch on (ACC)

        		 "ON" is also displayed when the power switch is on (IG).
        IG SW Power switch status OFF or ON

        OFF: Power switch off

        ON: Power switch on (IG)

        		 "OFF" is also displayed when the power switch is on (ACC).




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





      Tip:

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

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

  25. Click here

    CHECK HARNESS AND CONNECTOR (BODY GROUND, POWER SUPPLY)


    1. B004SYYC85
      *a

      Front view of wire harness connector

      (to Certification ECU (Smart Key ECU Assembly))

      Disconnect the G71 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
      G71-18 (E) - Body ground Always Below 1 Ω

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

      Standard Voltage
      Tester Connection Switch Condition Specified Condition
      G71-15 (CUTB) - Body ground Power switch off 11 to 14 V
      Result
      Proceed to
      OK
      NG

    • OKClick here
    • NG

      REPAIR OR REPLACE HARNESS OR CONNECTOR

  26. Click here

    CHECK ENTRY LOCK OPERATION


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

    2. Check that the function operates normally.

      Click here

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

    • AClick here
    • B

      END (CONNECTOR WAS NOT CONNECTED SECURELY)

  27. Click here

    REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)


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

      Tip:

      Refer to Service Bulletin.

      Result
      Proceed to
      NEXT

  28. Click here

    CHECK WIRELESS DOOR LOCK CONTROL SYSTEM


    1. Check that the function operates normally.

      Click here

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

    • A

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

    • B

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

  29. Click here

    CHECK WAVE ENVIRONMENT


    1. Bring the electrical key transmitter sub-assembly near the door control receiver and perform a wireless operation 2 or more times*.


      • *: When the wireless function is operated, channel 1 and 2 are used alternately. If the first wireless operation is performed successfully and the second wireless operation fails, wave interference may be occurring for either channel.

      Tip:

      • 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
      Wireless function does not operate normally A
      Wireless function operates normally 1 or more times. B

  30. Click here

    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

  31. Click here

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


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

      Tip:

      Refer to Service Bulletin.

      Result
      Proceed to
      NEXT

  32. Click here

    CHECK WAVE ENVIRONMENT


    1. Bring another registered electrical key transmitter sub-assembly near the door control receiver and perform a wireless operation 2 or more times*.


      • *: When the wireless function is operated, channel 1 and 2 are used alternately. If the first wireless operation is performed successfully and the second wireless operation fails, wave interference may be occurring for either channel.

      Tip:

      • 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
      Wireless function does not operate normally A
      Wireless function operates normally 1 or more times. B

    • AClick here
    • B

      END (ELECTRICAL KEY TRANSMITTER SUB-ASSEMBLY WAS DEFECTIVE)

  33. Click here

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


    1. Disconnect the L48*1 or L49*2 door control receiver connector.


      • *1: for Two Connector Type

      • *2: for One Connector Type

    2. Disconnect the L31 certification ECU (smart key ECU assembly) connector.

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

      Standard Resistance
      Table 11. for Two Connector Type:
      Tester Connection Condition Specified Condition
      L48-6 (CSEL) - L31-20 (CSEL) Always Below 1 Ω
      L48-6 (CSEL) or L31-20 (CSEL) - Other terminals and body ground Always 10 kΩ or higher
      Table 12. for One Connector Type:
      Tester Connection Condition Specified Condition
      L49-5 (CSEL) - L31-20 (CSEL) Always Below 1 Ω
      L49-5 (CSEL) or L31-20 (CSEL) - Other terminals and body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    • OKClick here
    • NG

      REPAIR OR REPLACE HARNESS OR CONNECTOR

  34. Click here

    CHECK ENTRY LOCK OPERATION


    1. Connect all connectors and check that the function operates normally.

      Click here

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

    • AClick here
    • B

      END (CONNECTOR WAS NOT CONNECTED SECURELY)

  35. Click here

    CHECK CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)


    1. B004YNWC20
      *A for Two Connector Type
      *B for One Connector Type
      *a

      Component with harness connected

      (Door Control Receiver)

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

      Standard Voltage
      Table 13. for Two Connector Type:
      Tester Connection Condition Specified Condition
      L48-6 (CSEL) - L48-12 (GND)

      Procedure:


      1. Power switch off

      2. All doors closed

      		 Below 1 V → Pulse generation
      Table 14. for One Connector Type:
      Tester Connection Condition Specified Condition
      L49-5 (CSEL) - L49-6 (GND)

      Procedure:


      1. Power switch off

      2. All doors closed

      		 Below 1 V → Pulse generation
      Result
      Proceed to
      OK
      NG

    • OKClick here
    • NG

      REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

  36. Click here

    CHECK DOOR CONTROL RECEIVER


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

    2. B004XWTC02
      *A for Two Connector Type
      *B for One Connector Type
      *a

      Component with harness connected

      (Door Control Receiver)
      *b Waveform 1
      *c Before lock or unlock switch of electrical key transmitter sub-assembly pressed
      *d After lock or unlock switch of electrical key transmitter sub-assembly pressed

      Using an oscilloscope, check the waveform.

      OK
      Table 15. for Two Connector Type:
      Tester Connection Condition Tool Setting Specified Condition
      L48-2 (DATA) - L48-12 (GND)

      Procedure:


      1. Power switch off

      2. All doors locked

      3. Electrical key transmitter sub-assembly not inside vehicle

      4. Electrical key transmitter sub-assembly brought outside detection area but kept inside wireless function operational area

      5. Lock or unlock switch of electrical key transmitter sub-assembly not pressed → pressed

      		 5 V/DIV., 500 ms/DIV.

      Pulse generation

      (See waveform 1)
      Table 16. for One Connector Type:
      Tester Connection Condition Tool Setting Specified Condition
      L49-3 (DATA) - L49-6 (GND)

      Procedure:


      1. Power switch off

      2. All doors locked

      3. Electrical key transmitter sub-assembly not inside vehicle

      4. Electrical key transmitter sub-assembly brought outside detection area but kept inside wireless function operational area

      5. Lock or unlock switch of electrical key transmitter sub-assembly not pressed → pressed

      		 5 V/DIV., 500 ms/DIV.

      Pulse generation

      (See waveform 1)
      Tip:

      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).

      Result
      Result Proceed to
      OK A
      NG B

  37. Click here

    INSPECT WINDOW GLASS ANTENNA WIRE


    1. Inspect window antenna wire.

      Click here

      Result
      Proceed to
      OK
      NG

  38. Click here

    CHECK HARNESS AND CONNECTOR (DOOR CONTROL RECEIVER - ROOF HEADER ELECTRICAL KEY ANTENNA)


    1. Disconnect the L173*1 or L49*2 door control receiver connector.


      • *1: for Two Connector Type

      • *2: for One Connector Type

    2. Disconnect the L174 roof header electrical key antennay connector.

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

      Standard Resistance
      Table 17. for Two Connector Type:
      Tester Connection Condition Specified Condition
      L173-1(ANT) - L174-1(ANT) Always Below 1 Ω
      L173-1(ANT) or L174-1(ANT) - Other terminals and body ground Always 10 kΩ or higher
      Table 18. for One Connector Type:
      Tester Connection Condition Specified Condition
      L49-7(ANT) - L174-1(ANT) Always Below 1 Ω
      L49-7(ANT) or L174-1(ANT) - Other terminals and body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    • OKClick here
    • NG

      REPAIR OR REPLACE HARNESS OR CONNECTOR

  39. Click here

    REPLACE ROOF HEADER ELECTRICAL KEY ANTENNA


    1. Temporarily replace the No. 1 amplifier antenna assembly with a new or known good one.

      Click here

      Result
      Proceed to
      NEXT

  40. Click here

    CHECK WIRELESS DOOR LOCK CONTROL SYSTEM


    1. Check that the function operates normally.

      Click here

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

    • AClick here
    • B

      END (ROOF HEADER ELECTRICAL KEY ANTENNA)

  41. Click here

    REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)


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

      Tip:

      Refer to Service Bulletin.

      Result
      Proceed to
      NEXT

  42. Click here

    CHECK WIRELESS DOOR LOCK CONTROL SYSTEM


    1. Check that the function operates normally.

      Click here

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

    • A

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

    • B

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