Inspection Procedure

WARNING: This page is about a different car, the 2007 Toyota Tacoma. However, it is still accessible from the selected car via links, so may be relevant.

HINT:

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

PERFORM ACTIVE TEST BY INTELLIGENT TESTER (SKID CONTROL BUZZER)

Connect the intelligent tester to the DLC3.
Start the engine.

Select the item "VSC/BR WARN BUZ" in the ACTIVE TEST and operate the skid control buzzer on the intelligent tester.

ACTIVE TEST

Item	Vehicle Condition / Test Details	Diagnostic note
VSV / BR WARN BUZ	Turns VSV / BRAKE warning buzzer ON/OFF	Buzzer can be heard

Check that the buzzer sounds/stops when the skid control buzzer is turned on/off by using the intelligent tester.

RESULT CHART

Result	Proceed to
Buzzer sounds/stops	A
Buzzer does not sound or sounds constantly	B

A: CHECK FOR INTERMITTENT PROBLEMS

B: Go to Next Step

INSPECT SKID CONTROL BUZZER (POWER SOURCE CIRCUIT)

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

Measure the voltage.

Standard

TESTER CONNECTION SPECIFIED CONDITION CHART

Tester Connection	Specified Condition
V7-2 - Body ground	10 to 14 V

Turn the ignition switch to OFF.
Reconnect the skid control buzzer connector.

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 ASSEMBLY
1. Disconnect the skid control buzzer connector.
2. Apply battery 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.
3. Reconnect the skid control buzzer connector.
NG: REPLACE SKID CONTROL BUZZER ASSEMBLY

OK: Go to Next Step

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

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

Measure the resistance.

Standard

TESTER CONNECTION SPECIFIED CONDITION CHART

Tester Connection	Specified Condition
S1-30 (BZ) - V7-1	Below 1 Ω
S1 -30 (BZ) - Body ground	10 kΩ or higher

Reconnect the skid control buzzer connector.
Reconnect the skid control ECU connector.

Fig 3: Identifying Skid Control ECU Connectors And Skid Control Buzzer Connector

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR

OK : REPLACE MASTER CYLINDER SOLENOID