VEHICLE STABILITY CONTROL SYSTEM Skid Control Buzzer Circuit

DESCRIPTION

The skid control buzzer sounds and the SLIP indicator blinks during VSC operation.

WIRING DIAGRAM

A0138ZKE01

INSPECTION PROCEDURE

Tech Tips

Start the inspection from step 1 when using an intelligent tester and start from step 2 when not using an intelligent tester.

PROCEDURE


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


    1. Connect the intelligent tester to the DLC3.

    2. Start the engine.

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

      ABS/TRC/VSC:
      Tester Display Test Part Control Range Diagnostic Note
      VSC H/B Warning Buzzer Skid control buzzer ON/OFF Buzzer ON/OFF Buzzer can be heard

    4. Check that the skid control buzzer sounds when operating it with the intelligent tester.

      OK
      The skid control buzzer sounds in accordance with operation of the intelligent tester.

    NG

    INSPECT SKID CONTROL BUZZER Click here

    OK

    REPLACE BRAKE ACTUATOR ASSEMBLY Click here

  2. INSPECT SKID CONTROL BUZZER


    1. A0137NGE01

      Disconnect the skid control buzzer connector.

    2. Apply a battery positive voltage to terminals 1 and 2 of the skid control buzzer connector, and check that the buzzer sounds.

      OK
      The skid control buzzer sound should be heard.

    NG

    REPLACE SKID CONTROL BUZZER

    OK

  3. INSPECT SKID CONTROL BUZZER (POWER SOURCE)


    1. A0137Y3E01

      Disconnect the skid control buzzer connector.

    2. Turn the ignition switch to ON.

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

      Standard voltage
      Tester Connection Switch Condition Specified Condition
      C44-2 (IG1) - Body ground Ignition switch ON 11 to 14 V

    NG

    REPAIR OR REPLACE SKID CONTROL BUZZER POWER SOURCE CIRCUIT

    OK

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


    1. A0136T4E01

      Disconnect the skid control ECU connector and the skid control buzzer connector.

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

      Standard resistance
      Tester Connection Switch Condition Specified Condition
      A41-41 (BZ) - C44-1 (BZ) Always Below 1 Ω
      A41-41 (BZ) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

    REPLACE BRAKE ACTUATOR ASSEMBLY Click here