Inspection Procedure

1. Connect the Techstream to the DLC3.
2. Turn the ignition switch to ON.
3. Turn the Techstream ON.
4. Select the Active Test mode and operate the skid control buzzer using the Techstream.

   ABS/VSC/TRAC 

   DATA LIST REFERENCE
   
   

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

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

B: REPLACE VSC ACTUATOR ASSEMBLY  (See REMOVAL  )

A: Go to Next Step 

1. Disconnect the H5 buzzer connector.
2. Turn the ignition switch to ON.
3. Measure the voltage according to the value(s) in the table below.

   Standard Voltage 

   VOLTAGE SPECIFICATION
   
   

   Tester Connection	Switch Condition	Specified Condition
   H5-1 - Body ground	Ignition switch ON	11 to 14 V

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

Fig 1: Identifying H5 Buzzer Connector Terminal

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

OK: Go to Next Step 

1. Disconnect the H5 buzzer connector.
2. 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: Skid control buzzer sounds. 

NG: REPLACE SKID CONTROL BUZZER ASSEMBLY  (See REMOVAL  )

Fig 2: Identifying Skid Control Buzzer Connector Terminal

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

OK: Go to Next Step 

1. Disconnect the A19 ECU connector.
2. Measure the resistance according to the value(s) in the table below.

   Standard Resistance 

   RESISTANCE REFERENCE
   
   

   Tester Connection	Condition	Specified Condition
   A19-8 (BZ) - H5-2	Always	Below 1 Ω
   A19-8 (BZ) - Body ground	Always	10 kΩ or higher

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

Fig 3: Identifying A19 ECU Connector Terminal

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

OK: Go to Next Step 

1. Disconnect the A19 ECU connector.
2. Measure the resistance according to the value(s) in the table below.

   Standard Resistance 

   RESISTANCE REFERENCE
   
   

   Tester Connection	Condition	Specified Condition
   A19-1 (GND1) - Body ground	Always	Below 1 Ω

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

Fig 4: Identifying A19 ECU Connector Terminal

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

OK: REPLACE VSC ACTUATOR ASSEMBLY  (See REMOVAL  )