Inspection Procedure

HINT:

Start the inspection from step 1 when using the intelligent tester and start from step 2 when not using the intelligent tester.

1. PERFORM ACTIVE TEST BY INTELLIGENT TESTER (SKID CONTROL BUZZER) 
   1. Connect the intelligent tester to the DLC3.
   2. Start the engine.
   3. Select the item "VSC/BR WARN BUZ" in the ACTIVE TEST and operate the skid control buzzer on the intelligent tester.
      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

   4. Check that skid control buzzer sounds by operating with the intelligent tester.

      OK: 

      The skid control buzzer sounds in accordance with operation of the intelligent tester. 

   NG: Go to step 2 

   OK: REPLACE ABS AND TRACTION ACTUATOR 

2. INSPECT SKID CONTROL BUZZER ASSEMBLY 
   1. Disconnect the skid control buzzer connector.
   2. Apply a battery positive voltage to terminals 1 and 2 of the skid control buzzer connector, and check that the buzzer sounds.
   Fig 1: Inspecting Skid Control Buzzer Assembly
   Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

   OK: 

   The skid control buzzer sound should be heard. 

   NG: REPLACE SKID CONTROL BUZZER ASSEMBLY 

   OK: Go to next step 

3. CHECK HARNESS AND CONNECTOR (SKID CONTROL BUZZER - SKID CONTROL ECU) 
   1. Disconnect the skid control buzzer connector and the skid control ECU connector.
   2. Measure the resistance according to the value(s) in the table below.

      Resistance 

      TESTER CONNECTION AND SPECIFIED CONDITION
      
      

      Tester Connection	Specified Condition
      S1-30 (BZ) - V8-1 (BZ)	Below 1 Ω

   3. Measure the resistance according to the value(s) in the table below.

   Resistance 

   TESTER CONNECTION AND SPECIFIED CONDITION
   
   

   Tester Connection	Specified Condition
   S1-30 (BZ) - Body ground	10 kΩ or higher

   Fig 2: Identifying Skid Control ECU Connector Terminals

   Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
   CAUTION: When replacing the ABS & TRACTION actuator assembly, perform zero point calibration (See CALIBRATION  ).

   NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

   OK: REPLACE ABS AND TRACTION ACTUATOR