ENTRY AND START SYSTEM(for Entry Function) Wireless Door Lock Buzzer Does not Sound

DESCRIPTION

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

WIRING DIAGRAM

A01VILXE01

CAUTION / NOTICE / HINT

Note


  • When using the intelligent tester with the engine 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.

  • The entry and start system (for Entry Function) uses a LIN communication system and 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 system is functioning properly.

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

PROCEDURE


  1. PERFORM ACTIVE TEST USING INTELLIGENT TESTER (WIRELESS BUZZER)


    1. Connect the intelligent tester to the DLC3.

    2. Turn the engine switch on (IG).

    3. Turn the intelligent tester on.

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

    5. According to the display on the intelligent tester, perform the Active Test.

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

    OK

    REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

    NG

  2. INSPECT WIRELESS DOOR LOCK BUZZER


    1. Inspect the wireless door lock buzzer Click here.


    NG

    REPLACE WIRELESS DOOR LOCK BUZZER Click here

    OK

  3. CHECK HARNESS AND CONNECTOR (INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY - WIRELESS DOOR LOCK BUZZER AND BODY GROUND)


    1. Disconnect the A34 wireless door lock buzzer connector.

    2. Disconnect the 3C instrument panel junction block assembly connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      3C-34 - A34-1(B) Always Below 1 Ω
      A34-2 (E) - Body ground Always Below 1 Ω
      3C-34 - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  4. REPLACE MAIN BODY ECU


    1. Temporarily replace the main body ECU with a new or normally functioning one Click here.


    NEXT

  5. PERFORM ACTIVE TEST USING INTELLIGENT TESTER (WIRELESS BUZZER)


    1. Connect the intelligent tester to the DLC3.

    2. Turn the engine switch on (IG).

    3. Turn the intelligent tester on.

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

    5. According to the display on the intelligent tester, perform the Active Test.

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

    OK

    REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

    NG

    REPLACE INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY Click here