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

A01KBY7E01

CAUTION / NOTICE / HINT

Note


  • The entry and start system (for Entry Function) uses the CAN communication system and LIN communication system. First, inspect the communication systems 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 vehicle engine 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 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.

  • 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.

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

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

    Click here

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

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

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

    Click here

  • When replacing the main body ECU (multiplex network body ECU), make sure to replace it with a new one.

PROCEDURE


  1. INSPECT BATTERY VOLTAGE


    1. Measure the voltage of the vehicle battery.

      Standard voltage
      11 to 14 V

      Tech Tips

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

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

      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. Connect the GTS and check for DTCs.

      Click here


      Body Electrical > Entry&Start > Trouble Codes

      Tech Tips

      When using the GTS with the engine switch off to troubleshoot: Connect the GTS to the DLC3 and turn a courtesy light switch on and off at 1.5-second intervals until communication between the GTS and vehicle begins.

      Result
      Proceed to
      DTC is not output
      DTC is output

    DTC is output

    GO TO DIAGNOSTIC TROUBLE CODE CHART Click here

    DTC is not output

  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.
      Result
      Proceed to
      Door locks operate normally
      Door locks do not operate

    Door locks do not operate

    GO TO POWER DOOR LOCK CONTROL SYSTEM Click here

    Door locks operate normally

  4. CHECK KEY DIAGNOSTIC MODE


    1. Check the following antennas in key diagnostic mode.

      Click here

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

      Tech Tips

      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.


      1. A01KDJFC04
        *A for LHD
        *a 0.7 to 1 m (2.30 to 3.28 ft.)
        A01KCDSC05
        *A 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.


        Body Electrical > Entry&Start > Utility
        Tester Display
        Communication Check(Key Diag Mode)
      2. A01KCDSC05
        *A for LHD
        *a 0.7 to 1 m (2.30 to 3.28 ft.)
        A01KDJFC04
        *A for RHD
        *a 0.7 to 1 m (2.30 to 3.28 ft.)

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

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


        Body Electrical > Entry&Start > Utility
        Tester Display
        Communication Check(Key Diag Mode)
      3. A01KBKRC02
        *a Inspection Point

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

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


        Body Electrical > Entry&Start > Utility
        Tester Display
        Communication Check(Key Diag Mode)
      4. A01KBP0C02
        *a Inspection Point

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

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


        Body Electrical > Entry&Start > Utility
        Tester Display
        Communication Check(Key Diag Mode)
      5. A01KB59C02
        *a 0.7 to 1 m (2.30 to 3.28 ft.)

        Check the electrical key antenna (outside luggage):

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


        Body Electrical > Entry&Start > Utility
        Tester Display
        Communication Check(Key Diag Mode)
        OK
        Wireless door lock buzzer sounds.
      Result
      Result Proceed to
      Diagnostic mode inspections fail for both channels A
      Diagnostic mode inspections succeed for both channels B
      Diagnostic mode inspection succeeds for only one of the channels C

    B

    GO TO STEP 10 Click here

    C

    CHECK WAVE ENVIRONMENT Click here

    A

  5. CHECK ELECTRICAL KEY TRANSMITTER SUB-ASSEMBLY


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

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

    B

    GO TO STEP 7 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 the Service Bulletin.

      Result
      Proceed to
      NEXT

    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.
      Result
      Proceed to
      OK
      NG

    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.

        Tech Tips


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

          Click here

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

      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

    B

    REPLACE ELECTRICAL KEY TRANSMITTER SUB-ASSEMBLY Click here

    C

    REPLACE TRANSMITTER BATTERY Click here

    A

  9. INSPECT TRANSMITTER BATTERY (VOLTAGE)


    1. Remove the transmitter battery.

      Click here

    2. Inspect the transmitter battery.

      Click here

      Result
      Proceed to
      OK
      NG

    OK

    REPLACE ELECTRICAL KEY TRANSMITTER SUB-ASSEMBLY Click here

    NG

    REPLACE TRANSMITTER BATTERY Click here

  10. CHECK WAVE ENVIRONMENT


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

      Tech Tips


      • When the electrical key transmitter sub-assembly is brought near the door control receiver, the possibility of wave interference decreases, and it can be determined if wave interference is causing the problem symptom.

      • If the inspection result is that the problem only occurs in certain locations or at certain times of day, the possibility of wave interference is high. Also, added vehicle components may cause wave interference. If installed, remove them and perform the operation check.

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

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

      OK
      Wireless and entry functions operate normally.
      Result
      Proceed to
      OK
      NG

    OK

    AFFECTED BY WAVE INTERFERENCE

    NG

    CHECK CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) Click here

  11. CHECK WAVE ENVIRONMENT


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

      Click here

      Tech Tips


      • When the electrical key transmitter sub-assembly is brought near the door control receiver, the possibility of wave interference decreases, and it can be determined if wave interference is causing the problem symptom.

      • If the inspection result is that the problem only occurs in certain locations or at certain times of day, the possibility of wave interference is high. Also, added vehicle components may cause wave interference. If installed, remove them and perform the operation check.

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

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

      OK
      Wireless door lock buzzer sounds.
      Result
      Proceed to
      OK
      NG

    OK

    AFFECTED BY WAVE INTERFERENCE

    NG

    CHECK ELECTRICAL KEY TRANSMITTER SUB-ASSEMBLY Click here

  12. CHECK CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)


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

      A01KCEOC42
      *a

      Component with harness connected

      (Certification ECU (Smart Key ECU Assembly))

      		 - -

    2. Connect the GTS to the DLC3.

    3. Turn the engine 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.


      Body Electrical > Power Source Control > Data List
      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: Engine switch off (ACC and IG)

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

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

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

      ST ON: Sending engine 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).

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

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

      Standard Voltage
      Tester Connection Switch Condition Specified Condition
      G84-6 (IG1D) - Body ground Engine switch off Below 1 V
      Engine switch on (ACC) Below 1 V
      Engine switch on (IG) 9 V or higher
      G82-9 (IG2D) - Body ground Engine switch off Below 1 V
      Engine switch on (ACC) Below 1 V
      Engine switch on (IG) 9 V or higher
      G84-4 (ACCD) - Body ground Engine switch off Below 1 V
      Engine switch on (IG) 9 V or higher
      Engine 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.

      Result
      Proceed to
      OK
      NG

    NG

    REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

    OK

  13. READ VALUE USING GTS (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 / 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
      Ignition Switch Engine switch on (IG) ON or OFF

      ON: Engine switch on (IG)

      OFF: Engine 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 engine switch is pressed twice without depressing the brake pedal, the engine 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 L code stored in the certification ECU (smart key ECU assembly) and the code stored in the steering lock ECU (steering lock actuator assembly) are compared, and if all codes match, the power source mode is considered on (IG) at that time.

      Body Electrical > Entry&Start > Data List
      Tester Display
      Ignition Switch
      OK
      The display is as specified in the normal condition column.
      Result
      Proceed to
      OK
      NG

    NG

    CHECK RELAY CONTACT SIDE CIRCUIT

    OK

  14. 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 also displayed for this item when 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 also displayed for this item when the engine switch is on (ACC)

      Body Electrical > Main Body > Data List
      Tester Display
      ACC SW
      IG SW
      OK
      The display is as specified in the normal condition column.
      Result
      Proceed to
      OK
      NG

    NG

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

    OK

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


    1. A01KB8CC07
      *a

      Front view of wire harness connector

      (to Certification ECU [Smart Key ECU Assembly])

      Disconnect the G82 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
      G82-11 (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
      G82-10 (CUTB) - Body ground Always 11 to 14 V
      G82-2 (+B) - Body ground Always 11 to 14 V
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

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


    1. Disconnect the G83 certification ECU (smart key ECU assembly) connector.

    2. Disconnect the M10 door control receiver connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      G83-5 (RCO) - M10-4 (+5) Always Below 1 Ω
      G83-17 (RDAM) - M10-5 (DATA) Always Below 1 Ω
      G83-6 (CSEL) - M10-2 (CSEL) Always Below 1 Ω
      G83-5 (RCO) or M10-4 (+5) - Body ground Always 10 kΩ or higher
      G83-17 (RDAM) or M10-5 (DATA) - Body ground Always 10 kΩ or higher
      G83-6 (CSEL) or M10-2 (CSEL) - Body ground Always 10 kΩ or higher

    4. Connect the G83 certification ECU (smart key ECU assembly) connector.

      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  17. CHECK DOOR CONTROL RECEIVER


    1. A01KD9IC51
      *a

      Component with harness connected

      (Door Control Receiver)

      Connect the door control receiver connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      M10-1 (GND) - Body ground Always Below 1 Ω
      Result
      Proceed to
      OK
      NG

    NG

    REPLACE DOOR CONTROL RECEIVER Click here

    OK

  18. CHECK CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)


    1. A01KD9IC58
      *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
      M10-4 (+5) - M10-1 (GND)

        Procedure

      • Engine switch off

      • Electrical key transmitter sub-assembly switch not pressed

      		 Below 1 V

        Procedure

      • Engine switch off

      • Electrical key transmitter sub-assembly switch pressed

      		 4.5 to 5.5 V
      M10-2 (CSEL) - M10-1 (GND) Engine switch off and all doors closed Below 1 V → 4.4 to 6.5 V → Below 1 V
      Result
      Proceed to
      OK
      NG

    NG

    REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

    OK

  19. CHECK DOOR CONTROL RECEIVER


    1. A01KD9IC53
      *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
      M10-5 (DATA) - M10-1 (GND)

        Procedure

      • All doors closed

      • All doors locked

      • Electrical key transmitter sub-assembly switch pressed

      		 Below 1 V → 10 to 16 V → Below 1 V
      Result
      Proceed to
      OK
      NG

    NG

    REPLACE DOOR CONTROL RECEIVER Click here

    OK

  20. REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)


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

      Tech Tips

      Refer to the Service Bulletin.

      Result
      Proceed to
      NEXT

    NEXT

  21. 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.
      Result
      Proceed to
      OK
      NG (for LHD)
      NG (for RHD)

    OK

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

    NG (for LHD)

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

    NG (for RHD)

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

  22. CHECK ELECTRICAL KEY TRANSMITTER SUB-ASSEMBLY


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

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

    B

    GO TO STEP 24 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 the Service Bulletin.

      Result
      Proceed to
      NEXT

    NEXT

  24. CHECK WAVE ENVIRONMENT


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

      Click here

      Tech Tips


      • When the electrical key transmitter sub-assembly is brought near the door control receiver, the possibility of wave interference decreases, and it can be determined if wave interference is causing the problem symptom.

      • If the inspection result is that the problem only occurs in certain locations or at certain times of day, the possibility of wave interference is high. Also, added vehicle components may cause wave interference. If installed, remove them and perform the operation check.

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

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

      OK
      Wireless door lock buzzer sounds.
      Result
      Proceed to
      OK
      NG

    OK

    END (ELECTRICAL KEY TRANSMITTER SUB-ASSEMBLY WAS DEFECTIVE)

    NG

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


    1. Disconnect the G83 certification ECU (smart key ECU assembly) connector.

    2. Disconnect the M10 door control receiver connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      M10-2 (CSEL) - G83-6 (CSEL) Always Below 1 Ω
      M10-2 (CSEL) or G83-6 (CSEL) - Body ground Always 10 kΩ or higher

    4. Connect the G83 certification ECU (smart key ECU assembly) connector.

      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  26. CHECK CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)


    1. A01KD9IC54
      *a

      Component with harness connected

      (Door Control Receiver)

      Connect the M10 door control receiver connector.

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

      Standard Voltage
      Tester Connection Condition Specified Condition
      M10-2 (CSEL) - M10-1 (GND) Engine switch off and all doors closed Below 1 V → 4.5 to 6 V → Below 1 V
      Result
      Proceed to
      OK
      NG

    NG

    REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

    OK

  27. CHECK DOOR CONTROL RECEIVER


    1. A01KD9IC53
      *a

      Component with harness connected

      (Door Control Receiver)

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

      Tech Tips

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

      Standard Voltage
      Tester Connection Condition Specified Condition
      M10-5 (DATA) - M10-1 (GND)

        Procedure

      • All doors closed

      • All doors locked

      • 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
      Proceed to
      OK
      NG

    NG

    REPLACE DOOR CONTROL RECEIVER Click here

    OK

  28. REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)


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

      Tech Tips

      Refer to the Service Bulletin.

      Result
      Proceed to
      NEXT

    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.
      Result
      Proceed to
      OK
      NG (for LHD)
      NG (for RHD)

    OK

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

    NG (for LHD)

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

    NG (for RHD)

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