VEHICLE STABILITY CONTROL SYSTEM Skid Control Buzzer Circuit

DESCRIPTION

A buzzer sounds to alert the driver when the vehicle-to-vehicle distance becomes less than the set value (w/ dynamic radar cruise control system).

WIRING DIAGRAM

A019LO3E23

INSPECTION PROCEDURE

Note

When replacing the brake actuator assembly, perform zero point calibration and store system information Click here.

PROCEDURE


  1. PERFORM ACTIVE TEST USING INTELLIGENT TESTER (SKID CONTROL BUZZER)


    1. Connect the intelligent tester to the DLC3.

    2. Start the engine.

    3. Select the Active Test on the intelligent tester Click here.

      ABS/VSC/TRC
      Tester Display Test Part Control Range Diagnostic Note
      DSS Signal Buzzer Skid control buzzer Buzzer ON/OFF Buzzer can be heard

    4. Check that the buzzer sounds/stops when turning the skid control buzzer on/off by using the intelligent tester.

      Result
      Result Proceed to
      Buzzer does not sound or sounds constantly A
      Buzzer sounds/stops B

    B

    CHECK FOR INTERMITTENT PROBLEMS Click here

    A

  2. INSPECT SKID CONTROL BUZZER (POWER SOURCE TERMINAL)


    1. A019JV7E11
      Text in Illustration
      *1

      Front view of wire harness connector

      (to Skid Control Buzzer)

      Turn the engine switch off.

    2. Disconnect the skid control buzzer connector.

    3. Turn the engine switch on (IG).

    4. Measure the voltage according to the value(s) in the table below.

      Standard Voltage
      Tester Connection Switch Condition Specified Condition
      A51-2 - Body ground Engine switch on (IG) 11 to 14 V

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR (POWER SOURCE CIRCUIT)

    OK

  3. INSPECT SKID CONTROL BUZZER


    1. A019JXIE04
      Text in Illustration
      *1

      Component without harness connected

      (Skid Control Buzzer)

      Turn the engine switch off.

    2. Apply battery negative voltage to terminal 1, and battery positive voltage to terminal 2 of the skid control buzzer, and then check that the buzzer sounds.

      OK
      The skid control buzzer sounds.

    NG

    REPLACE SKID CONTROL BUZZER Click here

    OK

  4. CHECK HARNESS AND CONNECTOR (SKID CONTROL ECU - SKID CONTROL BUZZER)


    1. A019O97E05
      Text in Illustration
      *1

      Front view of wire harness connector

      (to Skid Control ECU)
      *2

      Front view of wire harness connector

      (to Skid Control Buzzer)

      Disconnect the skid control ECU connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      A44-21 (BZ) - A51-1 Always Below 1 Ω
      A44-21 (BZ) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

    REPLACE BRAKE ACTUATOR ASSEMBLY Click here