Inspection Procedure

1. Using the intelligent tester's ACTIVE TEST, generate a control command and then check that the skid control buzzer operates.

   Skid control ECU 

   DIAGNOSTIC NOTE CHART
   
   

   Item	Diagnostic Note
   VSC/BR WARN BUZ	Buzzer can be heard

   OK: Skid control buzzer can be heard. 

OK: REPLACE SKID CONTROL ECU 

NG: Go to Next Step 

Fig 1: Inspecting Skid Control Buzzer

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

1. Disconnect the skid control buzzer connector.
2. Apply battery voltage to terminals 1 and 2 of the skid control buzzer connector, and then check that the buzzer sounds.

   OK: Buzzer sound can be heard. 

NG: REPLACE SKID CONTROL BUZZER 

OK: Go to Next Step 

Fig 2: Checking Wire Harness (Skid Control Buzzer - Skid Control ECU And Battery)

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

1. Disconnect the V8 buzzer connector.
2. Disconnect the S7 ECU connector.
3. Measure the resistance of the wire harness side connectors.

   Standard resistance 

   TESTER CONNECTION SPECIFIED CONDITION CHART
   
   

   Tester Connection	Specified Condition
   S7-2 (BZ) - V8-1	Below 1 Ω
   S7-2 (BZ) - Body ground	10 kΩ or higher

4. Turn the ignition switch ON.
5. Measure the voltage of the wire harness side connectors.

   Standard voltage 

   TESTER CONNECTION SPECIFIED CONDITION CHART
   
   

   Tester Connection	Specified Condition
   V8-2 - Body ground	10 to 14 V

NG: REPAIR OR REPLACE HARNESS AND CONNECTOR 

OK: REPLACE SKID CONTROL ECU