Inspection Procedure

WARNING: This page is about a different car, the 2006 Toyota 4Runner. However, it is still accessible from the selected car via links, so may be relevant.

NOTE: When replacing the master cylinder solenoid, perform zero point calibration (See CALIBRATION ).

PERFORM ACTIVE TESTER BY HAND-HELD TESTER (SKID CONTROL BUZZER)

Connect the hand-held tester to the DLC3.
Turn the ignition switch to the ON position and push the hand-held tester main switch ON.

Select "ACTIVE TEST" mode on the hand-held tester.

ACTIVE TEST DETAIL

Item	Vehicle Condition/Test Details	Diagnostic Note
VSC/BR WARN BUZ	Turns skid control buzzer ON/OFF	Buzzer can be heard

Check that the buzzer sounds/stops when turning the skid control buzzer on/off by using the hand-held tester.

Result:

RESULT REFERENCE

Buzzer sounds/stops	A
Buzzer does not sound or sounds constantly	B

B: Go to step 2

A: END

INSPECT SKID CONTROL BUZZER (POWER SOURCE TERMINAL VOLTAGE)

Disconnect the skid control buzzer connector.
Turn the ignition switch to the ON position.

Measure the voltage according to the value(s) in TERMINALS VOLTAGE SPECIFICATION TABLE .

Standard:

TERMINALS VOLTAGE SPECIFICATION TABLE

Tester Connection	Specified Condition
V5-2 - Body ground	10 to 14 V

Fig 1: Identifying Skid Control Buzzer Connector

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR (POWER SOURCE CIRCUIT)

OK: Go to next step

INSPECT SKID CONTROL BUZZER
1. 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:
  
  Fig 2: Inspecting Skid Control Buzzer
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  
  Skid control buzzer sounds.
NG: REPLACE SKID CONTROL BUZZER

OK: Go to next step

CHECK HARNESS AND CONNECTOR (BETWEEN SKID CONTROL ECU AND SKID CONTROL BUZZER) (See HOW TO PROCEED WITH TROUBLESHOOTING )

Disconnect the skid control ECU connector.

Measure the resistance according to the value(s) in TERMINALS RESISTANCE SPECIFICATION TABLE .

Standard:

TERMINALS RESISTANCE SPECIFICATION TABLE

Tester Connection	Specified Condition
S28-30 (BZ) - V5-1	Below 1
S28-30 (BZ) - Body ground	10 k or higher

Fig 3: Identifying Skid Control ECU Connector & Skid Control Buzzer Connector

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR

OK: REPLACE MASTER CYLINDER SOLENOID (SEE OVERHAUL )