Inspection Procedure

1. Connect the Techstream to the DLC3.
2. Turn the engine switch on (IG) and turn the Techstream on.
3. Enter the following menus: Chassis / ABS/VSC/TRAC / Active Test.

   ABS/VSC/TRAC 

   ACTIVE TEST - ABS/VSC/TRAC
   
   

   Tester Display	Test Part	Control Range	Diagnostic Note
   Buzzer	Skid control buzzer	Buzzer ON/OFF	The buzzer can be heard.

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

   Result 

   RESULT REFERENCE
   
   

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

A: USE SIMULATION METHOD TO CHECK  (See HOW TO PROCEED WITH TROUBLESHOOTING )

B: Go to Next Step 

1. Disconnect the E5 skid control buzzer connector.
2. Measure the voltage according to the value(s) in the table below.

   Standard Voltage 

   STANDARD VOLTAGE SPECIFICATION
   
   

   Tester Connection	Switch Condition	Specified Condition
   E5-2 - Body ground	Engine switch on (IG)	11 to 14 V

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

Fig 1: Identifying E5 Skid Control Buzzer Connector

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

OK: Go to Next Step 

1. Apply battery voltage to the skid control buzzer, and check that the buzzer sounds.

   OK 

   BATTERY VOLTAGE SPECIFICATION
   
   

   Measurement Condition	Specified Condition
   Battery positive (+) voltage - Terminal 2	Skid control buzzer sounds.
   Battery negative (-) voltage - Terminal 1

NG: REPLACE SKID CONTROL BUZZER ASSEMBLY  (See SKID CONTROL BUZZER  )

Fig 2: Inspecting Skid Control Buzzer

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

OK: Go to Next Step 

1. Disconnect the A24 skid control ECU connector.
2. Measure the resistance according to the value(s) in the table below.

   Standard Resistance 

   STANDARD RESISTANCE SPECIFICATION
   
   

   Tester Connection	Condition	Specified Condition
   A24-30 (BZ) - E5-1	Always	Below 1 Ω
   A24-30 (BZ) - Body ground	Always	10 kΩ or higher

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

Fig 3: Identifying E5 Skid Control Buzzer A24 Skid Control ECU Connectors

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

OK: REPLACE MASTER CYLINDER SOLENOID  (See DISASSEMBLY )