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ENTRY AND START SYSTEM(for Entry Function) Entry Exterior Alarm and Answer-back Buzzer do not Sound

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DTC Code DTC Name
  Entry Exterior Alarm and Answer-back Buzzer do not Sound
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DESCRIPTION

The entry and start system (for Entry Function) uses the wireless door lock buzzer to perform various vehicle exterior warnings. When the conditions of each warning are met, the certification ECU (smart key ECU assembly) sends a buzzer activation request signal to the main body ECU (multiplex network body ECU) via CAN communication and the buzzer sounds.

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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.

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PROCEDURE


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    CHECK CUSTOMIZE SETTING (WIRELESS BUZZER RESP)


    1. Connect the GTS to the DLC3.

    2. Turn the power switch on (IG).

    3. Turn the GTS on.

    4. Enter the following menus: Customize Setting / Wireless Door Lock.


      1. Wireless Door Lock
        Tester Display Description Default Setting ECU
        Wireless Buzzer Resp Wireless buzzer response ON 0:OFF,1:ON Main body ECU (multiplex network body ECU)



      Result
      Result Proceed to
      The customize setting is "ON" A
      The customize setting is "OFF" B

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    CHECK WIRELESS DOOR LOCK CONTROL SYSTEM


    1. Check that the function operates normally.

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

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    READ VALUE USING GTS (EACH UNLOCK DETECTION SWITCH)


    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
        FR Door Lock Pos Front door RH unlock detection switch signal UNLOCK or LOCK

        UNLOCK: Front door RH unlocked

        LOCK: Front door RH locked

        		 -
        FL Door Lock Pos Front door LH unlock detection switch signal UNLOCK or LOCK

        UNLOCK: Front door LH unlocked

        LOCK: Front door LH locked

        		 -
        RR-Door Lock Pos SW Rear door RH unlock detection switch signal OFF or ON

        OFF: Rear door RH locked

        ON: Rear door RH unlocked

        		 -
        RL-Door Lock Pos SW Rear door LH unlock detection switch signal OFF or ON

        OFF: Rear door LH locked

        ON: Rear door LH unlocked

        		 -






      1. Body Electrical > Main Body > Data List
        Tester Display
        FR Door Lock Pos
        FL Door Lock Pos
        RR-Door Lock Pos SW
        RL-Door Lock Pos SW







      OK
      The GTS display changes correctly in response to the lock/unlock operation.
      Result
      Proceed to
      OK
      NG

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    PERFORM ACTIVE TEST USING GTS (WIRELESS BUZZER)


    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 / Active Test.

    5. Perform Active Test according to the display on the GTS.


      1. Body Electrical > Main Body > Active Test
        Tester Display Measurement Item Control Range Diagnostic Note
        Wireless Buzzer Wireless door lock buzzer OFF/ON -



      1. Body Electrical > Main Body > Active Test
        Tester Display
        Wireless Buzzer




      Result
      Result Proceed to
      Wireless door lock buzzer does not sound A
      Wireless door lock buzzer sounds B

    • A

      GO TO WIRELESS DOOR LOCK CONTROL SYSTEM (NO ANSWER-BACK)Click here

    • B

      REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)