Skid Control Buzzer Circuit

BRAKE CONTROL: VEHICLE STABILITY CONTROL SYSTEM: Skid Control Buzzer Circuit

Skid Control Buzzer Circuit

DESCRIPTION

The skid control buzzer sounds while the accumulator pressure is abnormally low or an abnormality causing low fluid pressure occurs, and then VSC is activated.

WIRING DIAGRAM





INSPECTION PROCEDURE
NOTE: When replacing the master cylinder solenoid, perform zero point calibration Calibration.

PROCEDURE

1. PERFORM ACTIVE TEST USING TECHSTREAM (SKID CONTROL BUZZER)
(a) Connect Techstream to the DLC3.
(b) Turn the ignition switch to the ON position and push Techstream main switch ON.
(c) Select "Active Test" mode on Techstream.

ABS/VSC/TRAC





(d) Check that the buzzer sounds/stops when turning the skid control buzzer on/off by using Techstream.
Result:






A -- END
B -- Continue to next step.
2. INSPECT SKID CONTROL BUZZER (POWER SOURCE TERMINAL)





(a) Disconnect the skid control buzzer connector.
(b) Turn the ignition switch to the ON position.
(c) Measure the voltage according to the value(s) in the table below.
Standard voltage:






NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR (POWER SOURCE CIRCUIT)
OK -- Continue to next step.
3. INSPECT SKID CONTROL BUZZER





(a) 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:
Skid control buzzer sounds.
NG -- REPLACE SKID CONTROL BUZZER
OK -- Continue to next step.
4. CHECK HARNESS AND CONNECTOR (SKID CONTROL BUZZER - SKID CONTROL ECU)





(a) Disconnect the skid control ECU connector.
(b) Measure the resistance according to the value(s) in the table below.
Standard resistance:






NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR (BZ CIRCUIT)
OK -- REPLACE MASTER CYLINDER SOLENOID