Inspection Procedure

1. Connect the Techstream to the DLC3.
2. Turn the power switch ON (IG) and turn the Techstream main switch on.
3. Select 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 does not sound or sounds constantly	A
   Buzzer sounds/stops	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: REPLACE SKID CONTROL ECU  (See REMOVAL  )

A: Go to next step 

1. Disconnect the K11 buzzer connector.
2. Turn the power switch ON (IG).
3. Measure the voltage according to the value(s) in the table below.

   Standard voltage 

   STANDARD VOLTAGE SPECIFICATION
   
   

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

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

Fig 1: Identifying K11 Buzzer Connector

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. 

   Fig 2: Inspecting Skid Control Buzzer

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: REPLACE SKID CONTROL BUZZER 

OK: Go to next step 

1. Disconnect the A13 ECU connector.
2. Measure the resistance according to the value(s) in the table below.

   Standard resistance 

   STANDARD RESISTANCE SPECIFICATION
   
   

   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

Fig 3: Identifying A13 Skid Control ECU And K11 Skid Control Buzzer Connectors
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: Go to next step 

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

   Standard resistance 

   STANDARD RESISTANCE SPECIFICATION
   
   

   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  ).

   Fig 4: Identifying A13 And A15 ECU Connectors

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

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

OK: REPLACE SKID CONTROL ECU  (See REMOVAL  )