VSC Buzzer Circuit: Wiring Diagram

Fig 1: VSC Buzzer Wiring Diagram

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

HINT:

When using the intelligent tester, start from *1. When not using the intelligent tester, start from *2.

1. PERFORM ACTIVE TEST BY INTELLIGENT TESTER (VSC BUZZER)*1 
   1. Select the ACTIVE TEST, generate a control command, and then check that the VSC buzzer operates.
   ACTIVE TEST REFERENCE CHART
   
   

   Item	Vehicle Condition / Test Details	Diagnostic Note
   VSC / BR WARN BUZ	Turns VSC / BRAKE warning buzzer ON / OFF	Buzzer can be heard

   OK : VSC buzzer turns on or off. 

   OK : REPLACE SKID CONTROL ECU ASSEMBLY 

   NG : Go To Next Step 

2. INSPECT BRAKE WARNING AND VSC BUZZER*2 
   1. Disconnect the brake warning and VSC buzzer connector.
   2. Apply battery positive voltage to terminals 1 and 2 of the brake warning and VSC buzzer connector. Check that the brake warning light comes on and the VSC buzzer sounds.

   NG : REPLACE BRAKE WARNING AND VSC BUZZER 

   Fig 2: Inspecting Brake Warning And VSC Buzzer*2

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   OK : Go To Next Step 

3. CHECK WIRE HARNESS (SKID CONTROL ECU ASSEMBLY - VSC BUZZER) 

   NG : REPAIR OR REPLACE HARNESS AND CONNECTOR 

   OK : REPLACE SKID CONTROL ECU ASSEMBLY