ENTRY AND START SYSTEM (for Entry Function) Entry Answer-back Buzzer does not Sound

DESCRIPTION

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

INSPECTION PROCEDURE

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 intelligent tester with the power switch off to troubleshoot:

    Connect the intelligent tester to the DLC3 and turn a courtesy light switch on and off at 1.5-second intervals until communication between the intelligent tester and vehicle begins.

  • Check that there are no electrical key transmitters in the vehicle.

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

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

PROCEDURE


  1. READ VALUE USING INTELLIGENT TESTER (ANSWER-BACK BUZZER FUNCTION)


    1. Connect the intelligent tester to the DLC3.

    2. Turn the power switch on (IG).

    3. Turn the intelligent tester on.

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

    5. Select the setting by referring to the table below.

      Main Body
      Display Default Content Setting Relevant ECU
      Wireless Buzzer Resp ON Function that buzzer answer back when entry lock or unlock operation is performed. ON or OFF Main body ECU (Multiplex network body ECU)
      Result
      Result Proceed to
      Customize setting is ON. A
      Customize setting is OFF. B

    B

    PERFORM CUSTOMIZE SETTING (Proceed to Customize Parameters) Click here

    A

  2. PERFORM ACTIVE TEST USING INTELLIGENT TESTER


    1. Enter the following menus: Body / Main Body / Active Test.

    2. Perform the Active Test according to the display on the intelligent tester.

      Main Body
      Tester Display Test Part Control Range Diagnostic Note
      Wireless Buzzer Wireless door lock buzzer assembly ON/OFF -
      OK
      Wireless door lock buzzer sounds.

    NG

    GO TO WIRELESS DOOR LOCK CONTROL SYSTEM (Proceed to No Answer-Back) Click here

    OK

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