Vehicle Stability Control System Skid Control Buzzer Circuit

Brake. Land Cruiser. Urj200, 202 Grj200 Vdj200
Brake Control Dynamic Control Systems. Land Cruiser. Urj200, 202 Grj200 Vdj200

DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

PERFORM ACTIVE TEST USING GTS (DSS SIGNAL BUZZER)

CHECK TERMINAL VOLTAGE (IG1)

INSPECT SKID CONTROL BUZZER

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

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


Land Cruiser. Urj200, 202 Grj200 Vdj200.Brake Control Dynamic Control Systems.Anti-Lock Brake System.Vehicle Stability Control System Skid Control Buzzer Circuit


INSPECTION PROCEDURE

NOTICE:
  1. After replacing the master cylinder solenoid, perform zero point calibration and store the system information (Click here).
  2. Inspect the fuses for circuits related to this system before performing the following inspection procedure.
1.PERFORM ACTIVE TEST USING GTS (DSS SIGNAL BUZZER)

  1. Turn the ignition switch off.

  1. Connect the GTS to the DLC3.

  1. Turn the ignition switch to ON.

  1. Turn the GTS on.

  1. 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.

  1. 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.

  1. Disconnect the skid control buzzer assembly connector.



    Land Cruiser. Urj200, 202 Grj200 Vdj200.Brake Control Dynamic Control Systems.Anti-Lock Brake System.Vehicle Stability Control System Skid Control Buzzer Circuit

  1. 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
    Text in Illustration
    *a
    		Front view of wire harness connector
    (to Skid Control Buzzer Assembly)


NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK


3.INSPECT SKID CONTROL BUZZER

  1. Remove the skid control buzzer assembly (Click here).



    Land Cruiser. Urj200, 202 Grj200 Vdj200.Brake Control Dynamic Control Systems.Anti-Lock Brake System.Vehicle Stability Control System Skid Control Buzzer Circuit

  1. 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)
    Text in Illustration
    *a
    		Component without harness connected
    (Skid Control Buzzer Assembly)


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.

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

  1. Disconnect the E5 skid control buzzer assembly connector.

  1. 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


B
REPLACE MASTER CYLINDER SOLENOID (Click here)

C
REPLACE MASTER CYLINDER SOLENOID (Click here)
A

REPAIR OR REPLACE HARNESS OR CONNECTOR