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

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

DESCRIPTION

If the entry lock and unlock functions cannot be operated, the electrical key transmitter sub-assembly may be malfunctioning, or there may be wave interference or a malfunction in the power source circuit for the certification ECU (smart key ECU assembly).

WIRING DIAGRAM

B361605E04

CAUTION / NOTICE / HINT

Note:

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

    Click here

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

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

  • Before performing the inspection, check that DTC B1242 (wireless door lock control) or DTC B27B0 is not output.

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

  • 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".

PROCEDURE

  1. INSPECT BATTERY VOLTAGE

    1. Measure the voltage of the battery.

      Standard Voltage

      11 to 14 V

      Tip:

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

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

    Result

    Proceed to

    NEXT
    NEXT

  2. CHECK FOR DTC

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

    2. Connect the GTS and check for DTCs.

      Click here

      Body Electrical > Entry&Start > Trouble Codes

      Tip:

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

      OK

      DTC is not output.

    Result

    Proceed to

    OK

    NG
    NG

    GO TO DIAGNOSTIC TROUBLE CODE CHART

    Click here

    OK

  3. CHECK DOOR AJAR WARNING OPERATION

    1. When the doors are locked by operating the entry lock or wireless door lock functions with all doors closed, check the door ajar warning operation.

      Click here

      OK

      Door ajar warning does not operate.

    Result

    Proceed to

    OK

    NG
    NG

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

    Click here

    OK

  4. CHECK POWER DOOR LOCK CONTROL SYSTEM

    1. When the door control switch is operated, check that the doors unlock and lock according to the switch operation.

      Click here

      OK

      Door locks operate normally.

    Result

    Proceed to

    OK

    NG
    NG

    GO TO POWER DOOR LOCK CONTROL SYSTEM

    Click here

    OK

  5. CHECK KEY DIAGNOSTIC MODE

    1. Check the following antennas in key diagnostic mode.

      Click here

      Click here

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

      Tip:

      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. B361595C01

      *a

      0.7 to 1 m (2.30 to 3.28 ft.)

      Check the No. 2 indoor electrical key antenna assembly (center pillar LH):

      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, check that the wireless door lock buzzer sounds.

      Body Electrical > Entry&Start > Utility

      Tester Display

      Communication Check(Key Diag Mode)
    4. B361566C01

      *a

      0.7 to 1 m (2.30 to 3.28 ft.)

      Check the No. 2 indoor electrical key antenna assembly (center pillar RH):

      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, check that the wireless door lock buzzer sounds.

      Body Electrical > Entry&Start > Utility

      Tester Display

      Communication Check(Key Diag Mode)
    5. B361569C01

      *a

      0.7 to 1 m (2.30 to 3.28 ft.)

      Check the No. 3 indoor electrical key antenna assembly (back door):

      When the electrical key transmitter sub-assembly is brought within 0.7 to 1 m (2.30 to 3.28 ft.) of the No. 3 indoor electrical key antenna assembly (back door), 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.

    6. B361567C01

      *a

      Inspection Point

      Check the No. 2 indoor electrical key antenna assembly (center pillar RH) and No. 2 indoor electrical key antenna assembly (center pillar LH):

      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)
    7. B361567C01

      *a

      Inspection Point

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

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

      Body Electrical > Entry&Start > Utility

      Tester Display

      Communication Check(Key Diag Mode)
    8. B361568C01

      *a

      Inspection Point

      Check the No. 1 indoor electrical key antenna assembly (rear floor) (for 3 Door):

      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)

    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 channel

    C
    B

    CHECK CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)Click here

    C

    CHECK WAVE ENVIRONMENTClick here

    A

  6. CHECK WAVE ENVIRONMENT

    1. Bring the electrical key transmitter sub-assembly near the certification ECU (smart key ECU assembly) and perform a wireless and entry function operation check. (Refer to Service Bulletin for installation position of the parts)

      Tip:

      • When the electrical key transmitter sub-assembly is brought near the certification ECU (smart key ECU assembly), 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 and entry functions do not operate

    A

    Wireless and entry functions operate normally

    B
    B

    AFFECTED BY WAVE INTERFERENCE

    A

  7. 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.

        Tip:

        • 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 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 engine by holding the electrical key transmitter sub-assembly against the engine switch, depressing the brake pedal*1 or clutch pedal*2 and pressing the engine switch.

        • *1: for Multi-Mode Manual Transaxle

        • *2: for Manual Transaxle

    Result

    Result

    Proceed to

    Transmitter LED illuminates 3 times or more when switch is pressed and held

    A

    Transmitter LED does not illuminate when switch is pressed and held

    B

    Transmitter LED illuminates once or twice but not a third time

    C
    B

    INSPECT TRANSMITTER BATTERY (VOLTAGE)Click here

    C

    REPLACE TRANSMITTER BATTERY

    Click here

    A

  8. CHECK ELECTRICAL KEY TRANSMITTER SUB-ASSEMBLY

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

    Result

    Result

    Proceed to

    There are no other registered electrical key transmitter sub-assemblies

    A

    There is another registered electrical key transmitter sub-assemblies

    B
    B

    CHECK ENTRY DOOR LOCK OPERATIONClick here

    A

  9. 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
    NEXT

  10. CHECK ENTRY DOOR LOCK OPERATION

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

      Click here

      OK

      Entry lock/unlock functions operate normally.

    Result

    Proceed to

    OK

    NG
    OK

    END (ELECTRICAL KEY TRANSMITTER SUB-ASSEMBLY WAS DEFECTIVE)

    NG

    REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)Click here

  11. INSPECT TRANSMITTER BATTERY (VOLTAGE)

    1. Inspect the transmitter battery

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

        Click here

      2. B327509C04

        *a

        Lead Wire

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

        Note:

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

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

      4. B327510C02

        *a

        GND

        Measure the voltage of the transmitter battery.

        Tip:

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

        • Perform the measurement when the electrical key transmitter sub-assembly is at room temperature.

        • The electrical key transmitter sub-assembly 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 will display Yes.

          Click here

        Standard Voltage

        Tester Connection

        Condition

        Specified Condition

        Transmitter battery positive (+) - Transmitter battery negative (-)

        Engine switch off, all doors closed and trigger switch pressed

        2.3 to 3.2 V

    Result

    Proceed to

    OK

    NG
    OK

    REPLACE ELECTRICAL KEY TRANSMITTER SUB-ASSEMBLY

    NG

    REPLACE TRANSMITTER BATTERY

    Click here

  12. CHECK CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

    1. Connect the GTS to the DLC3.

    2. Turn the engine switch on (IG).

    3. Turn the GTS on.

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

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

      Body Electrical > Power Source Control > Data List

      Tester Display

      Measurement Item

      Range

      Normal Condition

      Diagnostic Note

      Power Supply Condition

      Power supply state

      All OFF, ACC ON, IG ON or ST ON

      All OFF: Engine switch off (ACC and IG)

      ACC ON: Engine switch on (ACC)

      IG ON: Engine switch on (IG)

      ST ON: Sending engine start request signal

      -

      Body Electrical > Power Source Control > Data List

      Tester Display

      Power Supply Condition

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

      B361612C01

      *a

      Component with harness connected

      (Certification ECU (Smart Key ECU Assembly))

      -

      -

      Standard Voltage

      Tester Connection

      Condition

      Specified Condition

      E49-20 (IG1D) - Body ground

      Engine switch off

      1 V or less

      Engine switch on (ACC)

      1 V or less

      Engine switch on (IG)

      9 V or higher

      E49-21 (ACCD) - Body ground

      Engine switch off

      1 V or less

      Engine switch on (ACC)

      8.5 V or higher

      Engine switch on (IG)

      8.5 V or less

    Result

    Proceed to

    OK

    NG
    NG

    REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

    OK

  13. INSPECT IG1 RELAY

    Click here

    Result

    Proceed to

    OK

    NG
    NG

    REPLACE IG1 RELAY

    OK

  14. CHECK HARNESS AND CONNECTOR (CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) - IG1 RELAY)

    Click here

    Result

    Proceed to

    OK

    NG
    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  15. CHECK HARNESS AND CONNECTOR (BATTERY - IG1 RELAY)

    Click here

    Result

    Proceed to

    OK

    NG
    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  16. INSPECT IG2 RELAY

    Click here

    Result

    Proceed to

    OK

    NG
    NG

    REPLACE IG2 RELAY

    OK

  17. CHECK HARNESS AND CONNECTOR (CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) - IG2 RELAY)

    Click here

    Result

    Proceed to

    OK

    NG
    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  18. CHECK HARNESS AND CONNECTOR (BATTERY - IG2 RELAY)

    Click here

    Result

    Proceed to

    OK

    NG
    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  19. INSPECT DRIVER SIDE JUNCTION BLOCK ASSEMBLY (ACC RELAY)

    Click here

    Result

    Proceed to

    OK

    NG
    NG

    REPLACE DRIVER SIDE JUNCTION BLOCK ASSEMBLY

    Click here

    OK

  20. CHECK HARNESS AND CONNECTOR (CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) - DRIVER SIDE JUNCTION BLOCK ASSEMBLY)

    Click here

    Result

    Proceed to

    OK

    NG
    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

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

    1. Disconnect the E50 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

      E49-10 (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

      E50-33 (CUTB) - Body ground

      Always

      11 to 14 V

      E49-1 (+B) - Body ground

      Always

      11 to 14 V
    B342591C04

    *a

    Front view of wire harness connector

    (to Certification ECU (Smart Key ECU Assembly))

    -

    -

    Result

    Proceed to

    OK

    NG
    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  22. CHECK ENTRY DOOR LOCK OPERATION

    1. Reconnect all connectors.

    2. Check the entry lock and unlock functions.

      Click here

      Click here

    Result

    Result

    Proceed to

    Entry lock/unlock functions do not operate

    A

    Entry lock/unlock functions operate normally

    B
    B

    END (CONNECTOR WAS NOT CONNECTED SECURELY)

    A

  23. REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

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

      Tip:

      Refer to Service Bulletin.

    Result

    Proceed to

    NEXT
    NEXT

  24. 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
    OK

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

    NG

    REPLACE BODY ECU

    Click here

  25. CHECK WAVE ENVIRONMENT

    1. Bring the electrical key transmitter sub-assembly that was checked first near the certification ECU (smart key ECU assembly) and select the failed channel (the channel in which the buzzer did not sound) to recheck key diagnostic mode. (Refer to Service Bulletin for installation position of the parts)

      Click here

      Tip:

      • When the electrical key transmitter sub-assembly is brought near the certification ECU (smart key ECU assembly), 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.

    Result

    Result

    Proceed to

    Wireless door lock buzzer does not sound

    A

    Wireless door lock buzzer sounds

    B
    B

    AFFECTED BY WAVE INTERFERENCE

    A

  26. CHECK ELECTRICAL KEY TRANSMITTER SUB-ASSEMBLY

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

    Result

    Result

    Proceed to

    There are no other registered electrical key transmitter sub-assemblies

    A

    There is another registered electrical key transmitter sub-assemblies

    B
    B

    CHECK KEY DIAGNOSTIC MODEClick here

    A

  27. 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
    NEXT

  28. CHECK KEY DIAGNOSTIC MODE

    1. Bring another registered electrical key transmitter sub-assembly near the certification ECU (smart key ECU assembly) and select the failed channel (the channel in which the buzzer did not sound) to recheck the key diagnostic mode. (Refer to Service Bulletin for the installation position of the part)

      Click here

      Tip:

      • When the electrical key transmitter sub-assembly is brought near the certification ECU (smart key ECU assembly), 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.

    Result

    Proceed to

    OK

    NG
    OK

    END (ELECTRICAL KEY TRANSMITTER SUB-ASSEMBLY WAS DEFECTIVE)

    NG

  29. REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

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

      Tip:

      Refer to Service Bulletin.

    Result

    Proceed to

    NEXT
    NEXT

  30. 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
    OK

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

    NG

    REPLACE BODY ECU

    Click here