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

B005YL8E41
B005XOGE04

CAUTION / NOTICE / HINT

Note


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

  • 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 (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 inspection procedure.

  • When replacing the door control and tire pressure monitoring system 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.*

  • It is necessary to perform initialization (See page ) after registration Click here of the transmitter IDs into the door control and tire pressure monitoring system receiver assembly if the door control receiver has been replaced.*

  • Before replacing the certification ECU (smart key ECU assembly), 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".

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


  • *: w/ Tire Pressure Warning System

PROCEDURE


  1. INSPECT AUXILIARY BATTERY VOLTAGE


    1. Measure the voltage of the auxiliary battery with the power switch off.

      Standard Voltage
      11 to 14 V

      Tech Tips

      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.


    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 vehicle power switch off, connect the GTS to the vehicle 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 the vehicle type 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.

      OK
      DTCs are 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 multiplex network 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.

      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 (w/ Tire Pressure Warning System).


      1. B005ZDIE01
        Text in Illustration
        *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. B005Y7TE01
        Text in Illustration
        *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): (w/ Entry Function)

        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. B005Y1AE01
        Text in Illustration
        *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. B005XTDE01
        Text in Illustration
        *a Inspection Point

        Check the No. 3 indoor electrical key antenna (rear floor):

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

      5. B005YP3E01
        Text in Illustration
        *a 0.7 to 1 m (2.30 to 3.28 ft.)

        Check the electrical key antenna (outside luggage): (w/ Entry Function)

        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 inspections fail for only one of the channels C

    B

    CHECK WAVE ENVIRONMENT Click here

    C

    CHECK WAVE ENVIRONMENT Click here

    A

  5. 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

    CHECK ENTRY DOOR LOCK OPERATION Click here

    A

  6. 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 Service Bulletin.


    NEXT

  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 hybrid system by holding the electrical key transmitter sub-assembly near the power switch, depressing the brake pedal and pressing the power switch.


    B

    REPLACE ELECTRICAL KEY TRANSMITTER SUB-ASSEMBLY

    C

    REPLACE TRANSMITTER BATTERY Click here

    A

  9. INSPECT TRANSMITTER BATTERY (VOLTAGE)


    1. Inspect the transmitter battery.


      1. B005YLKE06
        Text in Illustration
        *1 Lead Wire

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

      2. 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. B005YRME12
        Text in Illustration
        *1 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 Condition Specified Condition
        Transmitter battery positive (+) - Transmitter battery negative (-) Power 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 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.

      OK
      Wireless and entry functions operate normally.
      Result
      Result Proceed to
      OK A
      NG (w/ Tire Pressure Warning System) B
      NG (w/o Tire Pressure Warning System) C

    A

    AFFECTED BY WAVE INTERFERENCE

    C

    READ VALUE USING GTS Click here

    B

  11. CHECK CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)


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

      B005YIGE02
      Text in Illustration
      *a

      Component with harness connected

      (Certification ECU (Smart Key ECU Assembly))

      		 - -

    2. Connect the GTS to the DLC3.

    3. Turn the power switch on (IG).

    4. Turn the GTS on.

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

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

      Power Source Control
      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      Power Supply Condition Power supply state/IG2 ON, ST ON, All OFF, IG1 ON or ACC ON

      ALL OFF: Power switch off

      ACC ON: Power switch on (ACC) (ACC relay on)

      IG1 ON: Power switch on (IG) (IG1 relay on)

      IG2 ON: Power switch on (IG) (IG2 relay on)

      ST ON: Sending hybrid system start request signal

      		 Since the IG1 and IG2 relays turn on at approximately the same time, IG1 ON may not be displayed (the IG1 relay turns on for a very short time).

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

      Standard Voltage
      Tester Connection Condition Specified Condition
      L179-6 (IG1D) - Body ground Power switch off Below 1 V
      Power switch on (ACC) Below 1 V
      Power switch on (IG) 9 V or higher
      L195-9 (IG2D) - Body ground Power switch off Below 1 V
      Power switch on (ACC) Below 1 V
      Power switch on (IG) 9 V or higher
      L179-4 (ACCD) - Body ground Power switch off Below 1 V
      Power switch on (IG) 9 V or higher
      Power switch on (ACC) 9 V or higher

      Tech Tips

      Using the GTS, measure the voltage while confirming the power source mode on the Data List.


    NG

    REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

    OK

  12. READ VALUE USING 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 / Entry&Start / Data List.

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

      Entry&Start
      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      Ignition Switch Power switch on (IG) / ON or OFF

      ON: Power switch on (IG)

      OFF: Power switch off

      • Displays whether the IG power source signal input is on or off.

      • Use this Data List item to help determine the cause when all entry and start system/wireless functions do not operate.

      • If the electrical key transmitter sub-assembly is brought inside the vehicle and the power switch is pressed twice without depressing the brake pedal, the power switch will turn on (IG). At this time, the key ID code transmitted from the electrical key transmitter sub-assembly and the key ID code stored in the certification ECU (smart key ECU assembly) are compared, and the S code stored in the certification ECU (smart key ECU assembly) and the code stored in the ID code box (immobiliser code ECU) are compared, and if all codes match, the power source mode is considered on (IG) at that time.

    NG

    CHECK RELAY CONTACT SIDE CIRCUIT

    OK

  13. READ VALUE USING 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 / Main Body / Data List.

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

      Main Body
      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      ACC SW Power switch status / ON or OFF

      ON: Power switch on (ACC)

      OFF: Power switch off

      		 -
      IG SW Power switch status / ON or OFF

      ON: Power switch on (IG)

      OFF: Power switch off

      		 -

    NG

    TROUBLESHOOT MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)

    OK

  14. CHECK HARNESS AND CONNECTOR (CERTIFICATION ECU - AUXILIARY BATTERY AND BODY GROUND)


    1. B005ZJ0E02
      Text in Illustration
      *a

      Front view of wire harness connector

      (to Certification ECU (Smart Key ECU Assembly))

      		 - -

      Disconnect the L195 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
      L195-11 (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
      L195-10 (CUTB) - Body ground Power switch off 11 to 14 V
      L195-2 (+B) - Body ground Power switch off 11 to 14 V

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  15. CHECK HARNESS AND CONNECTOR (CERTIFICATION ECU - DOOR CONTROL RECEIVER)


    1. w/o Tire Pressure Warning System:


      1. Disconnect the L196 certification ECU (smart key ECU assembly) connector.

      2. Disconnect the S12 door control receiver connector.

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

        Standard Resistance
        Tester Connection Condition Specified Condition
        L196-5 (RCO) - S12-4 (+5) Always Below 1 Ω
        L196-17 (RDAM) - S12-5 (DATA) Always Below 1 Ω
        L196-6 (CSEL) - S12-2 (CSEL) Always Below 1 Ω
        L196-5 (RCO) or S12-4 (+5) - Body ground Always 10 kΩ or higher
        L196-17 (RDAM) or S12-5 (DATA) - Body ground Always 10 kΩ or higher
        L196-6 (CSEL) or S12-2 (CSEL) - Body ground Always 10 kΩ or higher

    2. w/ Tire Pressure Warning System:


      1. Disconnect the L196 certification ECU (smart key ECU assembly) connector.

      2. Disconnect the R42 door control receiver connector.

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

        Standard Resistance
        Tester Connection Condition Specified Condition
        L196-5 (RCO) - R42-10 (+5) Always Below 1 Ω
        L196-17 (RDAM) - R42-9 (DATA) Always Below 1 Ω
        L196-6 (CSEL) - R42-6 (CSEL) Always Below 1 Ω
        L196-5 (RCO) or R42-10 (+5) - Body ground Always 10 kΩ or higher
        L196-17 (RDAM) or R42-9 (DATA) - Body ground Always 10 kΩ or higher
        L196-6 (CSEL) or R42-6 (CSEL) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  16. CHECK DOOR CONTROL RECEIVER


    1. B005ZFXE02
      Text in Illustration
      *A w/o Tire Pressure Warning System
      *B w/ Tire Pressure Warning System
      *a

      Component with harness connected

      (Door Control Receiver)

      Connect the S12*1 or R42*2 door control receiver connector.

    2. Connect the L196 certification ECU (smart key ECU assembly) connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      S12-1 (GND)*1 - Body ground Always Below 1 Ω
      R42-12 (GND)*2 - Body ground

      • *1: w/o Tire Pressure Warning System

      • *2: w/ Tire Pressure Warning System

      Result
      Result Proceed to
      OK A
      NG (w/o Tire Pressure Warning System) B
      NG (w/ Tire Pressure Warning System) C

    B

    REPLACE DOOR CONTROL RECEIVER Click here

    C

    REPLACE DOOR CONTROL AND TIRE PRESSURE MONITORING SYSTEM RECEIVER ASSEMBLY Click here

    A

  17. CHECK CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)


    1. w/o Tire Pressure Warning System:


      1. Connect the L196 certification ECU (smart key ECU assembly) connector.

      2. Connect the S12 door control receiver connector.

      3. B005Z6NE02
        Text in Illustration
        *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
        S12-4 (+5) - S12-1 (GND)

        Procedure:


        1. Power switch off

        2. Electrical key transmitter sub-assembly switch not pressed

        		 Below 1 V

        Procedure:


        1. Power switch off

        2. Electrical key transmitter sub-assembly switch pressed

        		 4.5 to 5.5 V
        S12-2 (CSEL) - S12-1 (GND) Power switch off and all doors closed Below 1 V → Pulse generation

    2. w/ Tire Pressure Warning System:


      1. Connect the L196 certification ECU (smart key ECU assembly) connector.

      2. Connect the R42 door control receiver connector.

      3. B005ZG9E02
        Text in Illustration
        *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
        R42-10 (+5) - R42-12 (GND)

        Procedure:


        1. Power switch off

        2. Electrical key transmitter sub-assembly switch not pressed

        		 Below 1 V

        Procedure:


        1. Power switch off

        2. Electrical key transmitter sub-assembly switch pressed

        		 4.5 to 5.5 V
        R42-6 (CSEL) - R42-12 (GND) Power switch off and all doors closed Below 1 V → Pulse generation
        R42-1 (IG) - R42-12 (GND) Power switch on (IG) 10 to 16 V
        R42-7 (+B) - R42-12 (GND) Always 10 to 16 V

    NG

    REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

    OK

  18. CHECK DOOR CONTROL RECEIVER


    1. w/o Tire Pressure Warning System:


      1. Connect the L196 certification ECU (smart key ECU assembly) connector.

      2. Connect the S12 door control receiver connector.

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

        B005ZIEE02
        Standard Voltage
        Tester Connection Condition Tool Setting Specified Condition
        S12-5 (DATA) - S12-1 (GND)

        Procedure:


        1. Power switch off

        2. All doors locked

        3. Electrical key transmitter subassembly brought outside detection area but kept inside wireless function operational area

        4. Lock or unlock button of electrical key transmitter subassembly not pressed → pressed

        		 5 V/DIV., 500 ms/DIV.

        Pulse generation

        (See waveform)
        Text in Illustration
        *a

        Component with harness connected

        (Door Control Receiver)

        		 *b Waveform
        *c Before lock or unlock button of electrical key transmitter sub-assembly pressed *d After lock or unlock button of electrical key transmitter sub-assembly pressed

    2. w/ Tire Pressure Warning System:


      1. Connect the L196 certification ECU (smart key ECU assembly) connector.

      2. Connect the R42 door control receiver connector.

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

        B005ZR6E02
        Standard Voltage
        Tester Connection Condition Tool Setting Specified Condition
        R42-9 (DATA) - R42-12 (GND)

        Procedure:


        1. Power switch off

        2. All doors locked

        3. Electrical key transmitter subassembly brought outside detection area but kept inside wireless function operational area

        4. Lock or unlock button of electrical key transmitter subassembly not pressed → pressed

        		 5 V/DIV., 500 ms/DIV.

        Pulse generation

        (See waveform)
        Text in Illustration
        *a

        Component with harness connected

        (Door Control Receiver)

        		 *b Waveform
        *c Before lock or unlock button of electrical key transmitter sub-assembly pressed *d After lock or unlock button of electrical key transmitter sub-assembly pressed
        Result
        Result Proceed to
        OK A
        NG (w/o Tire Pressure Warning System) B
        NG (w/ Tire Pressure Warning System) C

    B

    REPLACE DOOR CONTROL RECEIVER Click here

    C

    REPLACE DOOR CONTROL AND TIRE PRESSURE MONITORING SYSTEM RECEIVER ASSEMBLY Click here

    A

  19. REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)


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

      Tech Tips

      Refer to Service Bulletin.


    NEXT

  20. 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 (MULTIPLEX NETWORK BODY ECU) Click here

  21. 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.

      OK
      Wireless door lock buzzer sounds.

    OK

    AFFECTED BY WAVE INTERFERENCE

    NG

  22. 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

    CHECK KEY DIAGNOSTIC MODE Click here

    A

  23. 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 Service Bulletin.


    NEXT

  24. CHECK KEY DIAGNOSTIC MODE


    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 Click here.

      OK
      Wireless door lock buzzer sounds.

    OK

    END (ELECTRICAL KEY TRANSMITTER SUB-ASSEMBLY THAT WAS INSPECTED FIRST WAS DEFECTIVE)

    NG

  25. CHECK HARNESS AND CONNECTOR (CERTIFICATION ECU - DOOR CONTROL AND TIRE PRESSURE MONITORING SYSTEM RECEIVER ASSEMBLY)


    1. w/o Tire Pressure Warning System


      1. Disconnect the L196 certification ECU (smart key ECU assembly) connector.

      2. Disconnect the S12 door control and tire pressure monitoring system receiver assembly connector.

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

        Standard Resistance
        Tester Connection Condition Specified Condition
        L196-6 (CSEL) - S12-2 (CSEL) Always Below 1 Ω
        L196-6 (CSEL) or S12-2 (CSEL) - Body ground Always 10 kΩ or higher

    2. w/ Tire Pressure Warning System


      1. Disconnect the L196 certification ECU (smart key ECU assembly) connector.

      2. Disconnect the R42 door control and tire pressure monitoring system receiver assembly connector.

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

        Standard Resistance
        Tester Connection Condition Specified Condition
        L196-6 (CSEL) - R42-6 (CSEL) Always Below 1 Ω
        L196-6 (CSEL) or R42-6 (CSEL) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  26. CHECK CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)


    1. w/o Tire Pressure Warning System


      1. Connect the L196 certification ECU (smart key ECU assembly) connector.

      2. Connect the S12 door control receiver connector.

      3. B005XW8E02
        Text in Illustration
        *a

        Component with harness connected

        (Door Control Receiver Assembly)

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

        Standard Voltage
        Tester Connection Condition Specified Condition
        S12-2 (CSEL) - S12-1 (GND) Power switch off and all doors closed Below 1 V → Pulse generation

    2. w/ Tire Pressure Warning System


      1. Connect the L196 certification ECU (smart key ECU assembly) connector.

      2. Connect the R42 door control and tire pressure monitoring system receiver assembly connector.

      3. B005ZE7E02
        Text in Illustration
        *a

        Component with harness connected

        (Door Control and Tire Pressure Monitoring System Receiver Assembly)

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

        Standard Voltage
        Tester Connection Condition Specified Condition
        R42-6 (CSEL) - R42-12 (GND) Power switch off and all doors closed Below 1 V → Pulse generation

    NG

    REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

    OK

  27. CHECK DOOR CONTROL AND TIRE PRESSURE MONITORING SYSTEM RECEIVER ASSEMBLY


    1. w/o Tire Pressure Warning System


      1. Connect the L196 certification ECU (smart key ECU assembly) connector.

      2. Connect the S12 door control receiver connector.

      3. 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).

        B005YDPE02
        *1 DATA
        Standard Voltage
        Tester Connection Condition Specified Condition
        S12-5 (DATA) - S12-1(GND)

        Procedure:


        1. All doors closed

        2. All doors locked

        3. Electrical key transmitter sub-assembly switch pressed*

        		 Below 1 V → 10 to 16 V → Below 1 V
        Text in Illustration
        *a

        Component with harness connected

        (Door Control Receiver)

        • *: While the electrical key antennas are being inspected in key diagnostic mode Click here.

    2. w/ Tire Pressure Warning System


      1. Connect the L196 certification ECU (smart key ECU assembly) connector.

      2. Connect the R42 door control and tire pressure monitoring system receiver assembly connector.

      3. B005YHWE02
        Text in Illustration
        *a

        Component with harness connected

        (Door Control and Tire Pressure Monitoring System Receiver Assembly)

        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
        R42-9 (DATA) - R42-12 (GND)

        Procedure:


        1. All doors closed

        2. All doors locked

        3. Electrical key transmitter sub-assembly switch pressed*

        		 Below 1 V → 10 to 16 V → Below 1 V

        • *: While the electrical key antennas are being inspected in key diagnostic mode Click here.

      Result
      Result Proceed to
      OK A
      NG (w/o Tire Pressure Warning System) B
      NG (w/ Tire Pressure Warning System) C

    B

    REPLACE DOOR CONTROL RECEIVER Click here

    C

    REPLACE DOOR CONTROL AND TIRE PRESSURE MONITORING SYSTEM RECEIVER ASSEMBLY Click here

    A

  28. REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)


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

      Tech Tips

      Refer to Service Bulletin.


    NEXT

  29. 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 (MULTIPLEX NETWORK BODY ECU) Click here