Inspection Procedure

1. Connect the Techstream to the DLC3.
2. Turn the engine switch on (IG) and turn the Techstream main switch on.
3. Select the Active Test mode on the Techstream.

   ABS/VSC/TRAC: 

   TESTER DISPLAY REFERENCE CHART
   
   

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

   Condition	Proceed To
   Buzzer sounds/stops	A
   Buzzer does not sound or sounds constantly	B

   HINT:

   If troubleshooting has been carried out according to the PROBLEM SYMPTOMS TABLE, refer back to the table and proceed to the next step (see PROBLEM SYMPTOMS TABLE  ).

B : Go to step 2 

A : END 

1. Disconnect the skid control buzzer connector.
2. Turn the engine switch on (IG).
3. Measure the voltage according to the value (s) in the table below.

   Voltage 

   VOLTAGE REFERENCE CHART
   
   

   Tester Connection	Condition	Specified Condition
   K11-2 - Body ground	Engine switch on (IG)	10 to 14 V

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

Fig 1: Inspecting Skid Control Buzzer (Power Source Terminal)

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

OK : Go to Next Step 

1. Disconnect the skid control 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 

Fig 2: Inspecting Skid Control Buzzer

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

OK : Go to Next Step 

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

   Resistance 

   RESISTANCE REFERENCE CHART
   
   

   Tester Connection	Specified Condition
   A13-6 (BZ) - K11-1	Below 1 Ω
   A13-6 (BZ) - Body ground	10 kΩ or higher
   A13-22 (VBZ) - K11-2	Below 1 Ω
   A13-22 (VBZ) - Body ground	10 kΩ or higher

NG : REPAIR OR REPLACE HARNESS OR CONNECTOR 

Fig 3: Checking Harness And Connector (Skid Control ECU To Skid Control Buzzer)

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

OK : Go to Next Step 

1. Disconnect the skid control ECU (A13, A15) connectors.
2. Measure the resistance according to the value (s) in the table below.

   Resistance 

   RESISTANCE REFERENCE CHART
   
   

   Tester Connection	Specified Condition
   A13-1 (GND) - Body ground	Below 1 Ω
   A15-1 (GND4) - Body ground	Below 1 Ω

   HINT:

   If troubleshooting has been carried out according to the PROBLEM SYMPTOMS TABLE, refer back to the table and proceed to the next step before replacing the part (see PROBLEM SYMPTOMS TABLE  ).

NG : REPAIR OR REPLACE HARNESS OR CONNECTOR (GND CIRCUIT) 

Fig 4: Inspecting Skid Control ECU (GND Terminal)

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

OK : REPLACE SKID CONTROL ECU