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

DESCRIPTION

The smart entry and start system uses the wireless door lock buzzer to perform various vehicle exterior warnings or inspections using the GTS. When the conditions are met, the certification ECU (smart key ECU assembly) sends a buzzer request signal to the main body ECU (driver side junction block assembly) via CAN communication. The wireless door lock assembly sounds the buzzer according to the signal from the main body ECU (driver side junction block assembly).

WIRING DIAGRAM

A01EKQTE02

INSPECTION PROCEDURE

Note


  • The smart entry and start system (for entry function) uses a multiplex communication system (LIN communication system) and CAN communication system. Inspect the communication function by following How to Proceed with Troubleshooting Click here. Troubleshoot the smart entry and start system (for entry function) after confirming that the communication system is functioning properly.

PROCEDURE


  1. PERFORM ACTIVE TEST USING GTS (WIRELESS BUZZER)


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

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

      Main Body (Main Body ECU (Driver Side Junction Block Assembly))
      Tester Display Test Part Control Range Diagnostic Note
      Wireless Buzzer Turns the wireless door lock buzzer ON/OFF -
      OK
      Wireless door lock buzzer sounds.

    NG

    CHECK HARNESS AND CONNECTOR (MAIN BODY ECU - WIRELESS DOOR LOCK BUZZER) Click here

    OK

    REPLACE MAIN BODY ECU (DRIVER SIDE JUNCTION BLOCK ASSEMBLY) Click here

  2. CHECK HARNESS AND CONNECTOR (MAIN BODY ECU - WIRELESS DOOR LOCK BUZZER)


    1. A01EK22E02
      Text in Illustration
      *1

      Front view of wire harness connector

      (to Main Body ECU (Driver Side Junction Block Assembly))
      *2

      Front view of wire harness connector

      (to Wireless Door Lock Buzzer)

      Disconnect the main body ECU (driver side junction block assembly) connector.

    2. Disconnect the wireless door lock buzzer connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      D51-7 (BZR) - A28-1 Always Below 1 Ω
      A28-2 - Body ground Always Below 1 Ω
      D51-7 (BZR) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  3. REPLACE WIRELESS DOOR LOCK BUZZER


    1. Replace the wireless door lock buzzer Click here.


    NEXT

  4. PERFORM ACTIVE TEST USING GTS (WIRELESS BUZZER)


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

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

      Main Body (Main Body ECU (Driver Side Junction Block Assembly))
      Tester Display Test Part Control Range Diagnostic Note
      Wireless Buzzer Turns the wireless door lock buzzer ON/OFF -
      OK
      Wireless door lock buzzer sounds.

    NG

    REPLACE MAIN BODY ECU (DRIVER SIDE JUNCTION BLOCK ASSEMBLY) Click here

    OK

    END (WIRELESS DOOR LOCK BUZZER WAS DEFECTIVE)