SMART ENTRY AND START SYSTEM(for Start Function) New Key Registration Warning Message is not Displayed

DESCRIPTION

If the new key registration warning message is not displayed after an electrical key transmitter sub-assembly has been registered, there may be communication problem between the certification ECU (smart key ECU assembly) and combination meter assembly (meter ECU).

CAUTION / NOTICE / HINT

Note


  • 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.

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

    Click here

  • Before replacing the certification ECU (smart key ECU assembly), refer to Service Bulletin.

  • After repair, confirm that no DTCs are output.

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

PROCEDURE


  1. CHECK FOR DTC


    1. Check for DTCs.


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

    B

    GO TO DIAGNOSTIC TROUBLE CODE CHART Click here

    A

  2. READ VALUE USING GTS (FR DOOR COURTESY SW, FL DOOR COURTESY 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
      FR Door Courtesy SW Front door RH courtesy light switch signal OFF or ON

      OFF: Front door RH closed

      ON: Front door RH open

      		 -
      FL Door Courtesy SW Front door LH courtesy light switch signal OFF or ON

      OFF: Front door LH closed

      ON: Front door LH open

      		 -

      Body Electrical > Main Body > Data List
      Tester Display
      FR Door Courtesy SW
      FL Door Courtesy SW
      Result
      Result Proceed to
      On the GTS screen, ON or OFF is displayed accordingly. A
      On the GTS screen, ON or OFF is not displayed accordingly. B

    B

    GO TO LIGHTING SYSTEM Click here

    A

  3. CHECK METER / GAUGE SYSTEM


    1. With the electrical key transmitter sub-assembly in the vehicle and all of the doors closed, lock the doors using the entry lock function and check that the warning message is displayed on the multi-information display.

      Result
      Result Proceed to
      The warning message is displayed on the multi-information display. A
      The warning message is not displayed on the multi-information display. B

    B

    GO TO METER / GAUGE SYSTEM Click here

    A

  4. ADDITIONAL KEY REGISTRATION


    1. Clear all of the registered electrical key transmitter sub-assemblies except one and perform registration again.

      Tech Tips

      Refer to Service Bulletin.

      Result
      Proceed to
      NEXT

    NEXT

  5. CHECK MULTI-INFORMATION DISPLAY


    1. With all of the doors closed, lock the doors using the entry lock function.

    2. Unlock the doors using the entry unlock function, open the driver door and check that the warning message is displayed on the multi-information display.

      Result
      Result Proceed to
      The warning message is displayed on the multi-information display. A
      The warning message is not displayed on the multi-information display. B

    A

    END (10 DAYS MAY HAVE ELAPSED SINCE AN ELECTRICAL KEY TRANSMITTER SUB-ASSEMBLY WAS REGISTERED)

    B

    REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)