Inspection Procedure

1. Connect the Techstream to the DLC3.
2. Turn the engine switch on (IG).
3. Select the Active Test mode on the Techstream (See DATA LIST / ACTIVE TEST  )

   ABS/VSC/TRAC 

   CONTROL RANGE REFERENCE
   
   

   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 using the Techstream.

   Result 

   RESULT REFERENCE
   
   

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

   HINT

   If troubleshooting has been carried out according to Problem Symptoms Table, refer back to the table and proceed to the next step (See PROBLEM SYMPTOMS TABLE  )

B: END 

A: Go to next step 

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

   Standard Voltage 

   STANDARD VOLTAGE
   
   

   Tester Connection	Switch Condition	Specified Condition
   J18-2 - Body ground	Engine switch on (IG)	11 to 14 V

Fig 1: Identifying Skid Control Buzzer (Power Source Terminal)
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

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

OK: Go to next step 

1. Turn the engine switch off
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: Identifying Skid Control Buzzer
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: REPLACE SKID CONTROL BUZZER  (See REMOVAL  )

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

   Standard Resistance 

   STANDARD RESISTANCE
   
   

   Tester Connection	Condition	Specified Condition
   J77-11 (BZ) - J18-1	Always	Below 1 Ω
   J77-11 (BZ) - Body ground	Always	10 kΩ or higher

   HINT.

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

Fig 3: Identifying Harness And Connector (Skid Control ECU - Skid Control Buzzer)
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: REPLACE SKID CONTROL ECU  (See REMOVAL  )