Inspection Procedure

1. Connect the Techstream to the DLC3.
2. Start the engine.
3. Select the following menu items: Chassis / ABS/VSC/ TRAC/ Active Test

   Select the "VSC H/B Warning Buzzer" in the Active Test and operate the skid control buzzer on the Techstream.

   ACTIVE TEST: ABS/VSC/TRAC 

   ABS/VSC/TRAC ACTIVE TEST REFERENCE
   
   

   Tester Display	Test Part	Control Range	Diagnostic note
   VSC H/B Warning Buzzer	Skid control buzzer	Skid control buzzer ON or OFF	Buzzer can be heard

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

   Result 

   RESULT CHART
   
   

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

B: CHECK FOR INTERMITTENT PROBLEMS  (See CHECK FOR INTERMITTENT PROBLEMS  )

A: Go to next step 

1. Disconnect the skid control buzzer connector.
Fig 1: Identifying Skid Control Buzzer Connector Terminal
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Turn the ignition switch to ON.
3. Measure the voltage.

   Standard voltage 

   VOLTAGE SPECIFICATION
   
   

   Tester Connection	Specified Condition
   A6-2 (IG1) - Body ground	11 to 14 V

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

OK: Go to next step 

1. Disconnect the skid control buzzer connector.
Fig 2: Inspecting Skid Control Buzzer Assembly
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
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. 

NG: REPLACE SKID CONTROL BUZZER ASSEMBLY 

OK: Go to next step 

1. Disconnect the skid control ECU connector.
Fig 3: Identifying Skid Control ECU And Skid Control Buzzer Connector Terminals
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Disconnect the skid control buzzer connector.
3. Measure the resistance.

   Standard resistance 

   RESISTANCE SPECIFICATION
   
   

   Tester Connection	Specified Condition
   A4-30 (BZ) - A6-1 (BZ)	Below 1 Ω
   A4-30 (BZ) - Body ground	10 kΩ or higher

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: REPLACE MASTER CYLINDER SOLENOID  (See DISASSEMBLY )