VEHICLE STABILITY CONTROL SYSTEM Skid Control Buzzer Circuit

DESCRIPTION

The skid control buzzer sounds upon receiving a signal from the skid control ECU (master cylinder solenoid).

WIRING DIAGRAM

A01X1YEE23
*a ECU-IG No. 1
*b Skid Control Buzzer
*c from IG Circuit
*d Skid Control ECU (Master Cylinder Solenoid)

CAUTION / NOTICE / HINT

Note


  • After replacing the master cylinder solenoid, perform zero point calibration and store the system information Click here.

  • Inspect the fuses for circuits related to this system before performing the following inspection procedure.

PROCEDURE


  1. PERFORM ACTIVE TEST USING GTS (DSS SIGNAL BUZZER)


    1. Turn the ignition switch off.

    2. Connect the GTS to the DLC3.

    3. Turn the ignition switch to ON.

    4. Turn the GTS on.

    5. Enter the following menus: Chassis / ABS/VSC/TRC / Active Test.

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

    6. Check that the skid control buzzer sounds/stops when turning the skid control buzzer on/off by using the GTS.

      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. CHECK TERMINAL VOLTAGE (IG1)


    1. Turn the ignition switch off.

    2. Disconnect the skid control buzzer assembly connector.

    3. A01X119E02
      Text in Illustration
      *a

      Front view of wire harness connector

      (to Skid Control Buzzer Assembly)

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

      Standard Voltage
      Tester Connection Switch Condition Specified Condition
      E5-2 (IG1) - Body ground Ignition switch ON 11 to 14 V

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  3. INSPECT SKID CONTROL BUZZER


    1. Remove the skid control buzzer assembly Click here.

    2. A01X4A3E01
      Text in Illustration
      *a

      Component without harness connected

      (Skid Control Buzzer Assembly)

      Apply battery voltage to the skid control buzzer, and check that the buzzer sounds.

      OK
      Measurement Condition Specified Condition
      Battery positive (+) voltage - Terminal 2 (IG1) Skid control buzzer sounds
      Battery negative (-) voltage - Terminal 1 (BZ)

    NG

    REPLACE SKID CONTROL BUZZER ASSEMBLY Click here

    OK

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


    1. Turn the ignition switch off.

    2. Disconnect the A24 skid control ECU (master cylinder solenoid) connector.

    3. Disconnect the E5 skid control buzzer assembly connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      A24-30 (BZ) - E5-1 (BZ) Always Below 1 Ω
      A24-30 (BZ) - Body ground Always 10 kΩ or higher
      Result
      Result Proceed to
      NG A
      OK (for LHD) B
      OK (for RHD) C

    A

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    B

    REPLACE MASTER CYLINDER SOLENOID Click here

    C

    REPLACE MASTER CYLINDER SOLENOID Click here